联想 Yoga Book 9 13IMU9 二合一双屏幕评测:酷睿 7 155U 和 Arc 4 喜忧参半
联想 Yoga Book 9i 二合一双屏在 2023 年的 CES 上首次亮相,然后在当年夏天以 2000 美元的价格上市。在 2024 年,制造商将 Raptor Lake-U 处理器换成了 Meteor Lake-U,其他配置几乎保持不变。
我们的测试机配备了 Core Ultra 7 155U CPU、16 GB LPDDR5x-7467 内存、1 TB M.2 2242 PCIe4 x4 NVMe SSD 和两块相同的 2800 x 1800 OLED HDR500 触摸屏,上市价格与 2023 年一样,都是 2000 美元。
更多联想评测:
潜在的竞争对手比较
Rating | Date | Model | Weight | Height | Size | Resolution | Price |
---|---|---|---|---|---|---|---|
87 % v7 (old) | 04 / 2024 | Lenovo Yoga Book 9 13IMU9 Ultra 7 155U, Graphics 4-Core | 1.4 kg | 15.95 mm | 13.30" | 2880x1800 | |
86.4 % v7 (old) | 05 / 2023 | Lenovo Yoga Book 9i 2-in-1 Dual Screen i7-1355U, Iris Xe G7 96EUs | 1.6 kg | 15.95 mm | 13.30" | 2880x1800 | |
90.5 % v7 (old) | 04 / 2024 | Lenovo Yoga 9 2-in-1 14IMH9 Ultra 7 155H, Arc 8-Core | 1.3 kg | 15.9 mm | 14.00" | 2880x1800 | |
86.7 % v7 (old) | 10 / 2021 | Dell XPS 13 9310 2-in-1 i7-1165G7, Iris Xe G7 96EUs | 1.3 kg | 14.35 mm | 13.40" | 1920x1200 | |
91.4 % v7 (old) | 02 / 2024 | HP Spectre x360 14-eu0078ng Ultra 7 155H, Arc 8-Core | 1.5 kg | 16.9 mm | 14.00" | 2880x1800 | |
87.8 % v7 (old) | 03 / 2024 | Asus Zenbook Duo OLED UX8406MA Ultra 9 185H, Arc 8-Core | 1.7 kg | 19.9 mm | 14.00" | 2880x1800 |
» Notebookcheck多媒体笔记本电脑Top 10排名
» Notebookcheck游戏笔记本电脑Top 10排名
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» Notebookcheck评测过最出色的笔记本电脑屏幕
» Notebookcheck售价500欧元以下笔记本电脑Top 10排名
» Notebookcheck售价300欧元以下笔记本电脑Top 10排名
案例 - 双面展示
除了附带的蓝牙键盘上新增了 Microsoft Co-Pilot 键外,机身没有任何变化。如果能有一些新的颜色选择就更好了,这样就能更好地区分 2023 和 2024 两种机型。
我们建议查看我们对 2023 型号的评测 ,以了解有关 Yoga Book 9 13IMU9 2 合 1 物理特性的更多信息。
交流
Networking | |
iperf3 transmit AX12 | |
Dell XPS 13 9310 2-in-1 | |
iperf3 receive AX12 | |
Dell XPS 13 9310 2-in-1 | |
iperf3 transmit AXE11000 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
iperf3 receive AXE11000 | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
iperf3 transmit AXE11000 6GHz | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
iperf3 receive AXE11000 6GHz | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 |
网络摄像头
显示屏 - 无重大变化
与 2023 型号相同的三星 SDC ATNA33AA02-0 OLED 面板已经回归,这意味着视觉体验没有改变。虽然屏幕非常生动,在多任务处理时也非常宽敞,但当其他 OLED 笔记本电脑(如 联想 IdeaPad Slim 7i Pro或 华硕 ZenBook等其他 OLED 笔记本电脑的刷新率为 90 赫兹或更快。
这两款屏幕仍然表现出许多与 2023 机型相同的令人讨厌的行为。例如,即使连接了第三个外接屏幕,重启后屏幕的位置也会重置。因此,在对接笔记本电脑时,你需要花费大量时间重新排列屏幕。
|
Brightness Distribution: 97 %
Center on Battery: 362.6 cd/m²
Contrast: ∞:1 (Black: 0 cd/m²)
ΔE Color 4.66 | 0.5-29.43 Ø4.92, calibrated: 0.56
ΔE Greyscale 2.6 | 0.5-98 Ø5.2
97% AdobeRGB 1998 (Argyll 2.2.0 3D)
100% sRGB (Argyll 2.2.0 3D)
99.7% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.2
Lenovo Yoga Book 9 13IMU9 SDC ATNA33AA02-0, OLED, 2880x1800, 13.3" | Lenovo Yoga Book 9i 2-in-1 Dual Screen SDC ATNA33AA02-0, OLED, 2880x1800, 13.3" | Lenovo Yoga 9 2-in-1 14IMH9 LEN140WQ+, OLED, 2880x1800, 14" | Dell XPS 13 9310 2-in-1 Sharp LQ134N1, IPS, 1920x1200, 13.4" | HP Spectre x360 14-eu0078ng SDC4197, OLED, 2880x1800, 14" | Asus Zenbook Duo OLED UX8406MA SDC419D, OLED, 2880x1800, 14" | |
---|---|---|---|---|---|---|
Display | -1% | 0% | -19% | -3% | -2% | |
Display P3 Coverage | 99.7 | 99.8 0% | 99.8 0% | 69.7 -30% | 99.8 0% | 99.6 0% |
sRGB Coverage | 100 | 100 0% | 100 0% | 99 -1% | 100 0% | 100 0% |
AdobeRGB 1998 Coverage | 97 | 95.4 -2% | 97.3 0% | 71.7 -26% | 89.3 -8% | 91.8 -5% |
Response Times | 2% | 137% | -205% | 274% | 274% | |
Response Time Grey 50% / Grey 80% * | 1.88 ? | 1.83 ? 3% | 0.8 ? 57% | 55.6 ? -2857% | 0.77 ? 59% | 0.77 ? 59% |
Response Time Black / White * | 2.1 ? | 2.03 ? 3% | 1 ? 52% | 40.4 ? -1824% | 0.75 ? 64% | 0.76 ? 64% |
PWM Frequency | 60 ? | 60 ? 0% | 240.5 ? 301% | 2500 ? 4067% | 480 700% | 480 ? 700% |
Screen | 2% | -26% | -15% | 31% | 25% | |
Brightness middle | 362.6 | 359.7 -1% | 371.6 2% | 555.7 53% | 378 4% | 381 5% |
Brightness | 368 | 363 -1% | 373 1% | 528 43% | 384 4% | 384 4% |
Brightness Distribution | 97 | 98 1% | 99 2% | 90 -7% | 97 0% | 98 1% |
Black Level * | 0.35 | |||||
Colorchecker dE 2000 * | 4.66 | 4.51 3% | 4.91 -5% | 4.83 -4% | 1.4 70% | 1.6 66% |
Colorchecker dE 2000 max. * | 7.25 | 7.05 3% | 8.33 -15% | 8.46 -17% | 2.2 70% | 2 72% |
Colorchecker dE 2000 calibrated * | 0.56 | 1.59 -184% | 0.76 -36% | |||
Greyscale dE 2000 * | 2.6 | 2.4 8% | 2.2 15% | 6.1 -135% | 1.7 35% | 2.6 -0% |
Gamma | 2.2 100% | 2.18 101% | 2.25 98% | 1.98 111% | 2.17 101% | 2.2 100% |
CCT | 6055 107% | 6112 106% | 6120 106% | 6686 97% | 6256 104% | 6784 96% |
Contrast | 1588 | |||||
Total Average (Program / Settings) | 1% /
1% | 37% /
17% | -80% /
-60% | 101% /
83% | 99% /
81% |
* ... smaller is better
虽然这两款显示器在出厂时没有经过校准,但它们提供的 P3 色彩的平均 deltaE 值相对较低。
Display Response Times
↔ Response Time Black to White | ||
---|---|---|
2.1 ms ... rise ↗ and fall ↘ combined | ↗ 0.9 ms rise | |
↘ 1.2 ms fall | ||
The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 8 % of all devices are better. This means that the measured response time is better than the average of all tested devices (21 ms). | ||
↔ Response Time 50% Grey to 80% Grey | ||
1.88 ms ... rise ↗ and fall ↘ combined | ↗ 1 ms rise | |
↘ 0.88 ms fall | ||
The screen shows very fast response rates in our tests and should be very well suited for fast-paced gaming. In comparison, all tested devices range from 0.165 (minimum) to 636 (maximum) ms. » 6 % of all devices are better. This means that the measured response time is better than the average of all tested devices (32.9 ms). |
Screen Flickering / PWM (Pulse-Width Modulation)
Screen flickering / PWM detected | 60 Hz | ≤ 100 % brightness setting | |
The display backlight flickers at 60 Hz (worst case, e.g., utilizing PWM) Flickering detected at a brightness setting of 100 % and below. There should be no flickering or PWM above this brightness setting. The frequency of 60 Hz is very low, so the flickering may cause eyestrain and headaches after extended use. In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8746 (minimum: 5 - maximum: 343500) Hz was measured. |
所有亮度级别(包括最大设置)都有脉宽调制。从 0 到 57% 亮度的频率约为 237 赫兹,从 58% 及以上亮度则变为 60 赫兹。
性能--新处理器变化不大
测试条件
在运行下面的基准测试之前,我们将系统设置为性能模式。联想 Vantage 今年还进行了重新设计,使其更易于浏览,但其文本框仍然没有充分利用屏幕的全部宽度,因此存在大量空白区域,如下图所示。
处理器
不要与 Core Ultra 7 155H和 酷睿至尊 7 155U是 ULV 变体,其时钟频率和集成 GPU 均较低。在这种情况下,联想的酷睿Ultra 7 155U要比Yoga 9 2-in-1 14IM的酷睿Ultra 7 155H慢35%左右。 Yoga 9 二合一 14IMH9.这一差距非常明显,以至于我们的 2024 Yoga Book 中的 CPU 速度仅勉强快于 酷睿 i7-1355U相比,2024 款 Yoga Book 中的 CPU 只比 2023 款的酷睿 i7-1355U 快了个位数百分点。
Cinebench R15 Multi Loop
Cinebench R23: Multi Core | Single Core
Cinebench R20: CPU (Multi Core) | CPU (Single Core)
Cinebench R15: CPU Multi 64Bit | CPU Single 64Bit
Blender: v2.79 BMW27 CPU
7-Zip 18.03: 7z b 4 | 7z b 4 -mmt1
Geekbench 6.3: Multi-Core | Single-Core
Geekbench 5.5: Multi-Core | Single-Core
HWBOT x265 Benchmark v2.2: 4k Preset
LibreOffice : 20 Documents To PDF
R Benchmark 2.5: Overall mean
Geekbench 6.3 / Multi-Core | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Dell Latitude 9450 2-in-1 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (7592 - 9448, n=3) |
Geekbench 6.3 / Single-Core | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Dell Latitude 9450 2-in-1 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (1534 - 2324, n=3) |
Cinebench R23: Multi Core | Single Core
Cinebench R20: CPU (Multi Core) | CPU (Single Core)
Cinebench R15: CPU Multi 64Bit | CPU Single 64Bit
Blender: v2.79 BMW27 CPU
7-Zip 18.03: 7z b 4 | 7z b 4 -mmt1
Geekbench 6.3: Multi-Core | Single-Core
Geekbench 5.5: Multi-Core | Single-Core
HWBOT x265 Benchmark v2.2: 4k Preset
LibreOffice : 20 Documents To PDF
R Benchmark 2.5: Overall mean
* ... smaller is better
AIDA64: FP32 Ray-Trace | FPU Julia | CPU SHA3 | CPU Queen | FPU SinJulia | FPU Mandel | CPU AES | CPU ZLib | FP64 Ray-Trace | CPU PhotoWorxx
Performance Rating | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
AIDA64 / FP32 Ray-Trace | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (7048 - 8811, n=3) | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
AIDA64 / FPU Julia | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (34928 - 44269, n=3) | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
AIDA64 / CPU SHA3 | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (1827 - 2466, n=3) | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
AIDA64 / CPU Queen | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 | |
Average Intel Core Ultra 7 155U (44936 - 46759, n=3) | |
Lenovo Yoga Book 9 13IMU9 |
AIDA64 / FPU SinJulia | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (4251 - 5540, n=3) | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
AIDA64 / FPU Mandel | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (17116 - 21672, n=3) | |
Dell XPS 13 9310 2-in-1 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen |
AIDA64 / CPU AES | |
Dell XPS 13 9310 2-in-1 | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (38152 - 47675, n=3) | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen |
AIDA64 / CPU ZLib | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Average Intel Core Ultra 7 155U (546 - 723, n=3) | |
Dell XPS 13 9310 2-in-1 |
AIDA64 / FP64 Ray-Trace | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (3521 - 4521, n=3) | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
AIDA64 / CPU PhotoWorxx | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 | |
Average Intel Core Ultra 7 155U (25065 - 44831, n=3) |
系统性能
PCMark 平均成绩略高于我们在 2023 Yoga Book 9 上记录的成绩。这种微小但持续的同比优势可归因于内部的小幅改进,如 CPU(Raptor Lake-U 到 Meteor Lake-U)、iGPU(Iris Xe 96 EUs 到 Arc 4)和内存(4266 MHz 到 7467 MHz)的略快。
CrossMark: Overall | Productivity | Creativity | Responsiveness
WebXPRT 3: Overall
WebXPRT 4: Overall
Mozilla Kraken 1.1: Total
PCMark 10 / Score | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (5931 - 6055, n=2) | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
PCMark 10 / Essentials | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Asus Zenbook Duo OLED UX8406MA | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (10456 - 11088, n=2) | |
Dell XPS 13 9310 2-in-1 |
PCMark 10 / Productivity | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (7994 - 8590, n=2) | |
Lenovo Yoga Book 9 13IMU9 | |
Dell XPS 13 9310 2-in-1 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen |
PCMark 10 / Digital Content Creation | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (6303 - 6797, n=2) | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
CrossMark / Overall | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (1393 - 1467, n=2) | |
HP Spectre x360 14-eu0078ng |
CrossMark / Productivity | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (1409 - 1443, n=2) | |
HP Spectre x360 14-eu0078ng |
CrossMark / Creativity | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (1451 - 1566, n=2) |
CrossMark / Responsiveness | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (1192 - 1266, n=2) | |
HP Spectre x360 14-eu0078ng |
WebXPRT 3 / Overall | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (261 - 272, n=2) | |
Dell XPS 13 9310 2-in-1 |
WebXPRT 4 / Overall | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (245 - 250, n=2) | |
Lenovo Yoga 9 2-in-1 14IMH9 |
Mozilla Kraken 1.1 / Total | |
Dell XPS 13 9310 2-in-1 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) (539 - 548, n=2) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Asus Zenbook Duo OLED UX8406MA |
* ... smaller is better
PCMark 10 Score | 6055 points | |
Help |
AIDA64 / Memory Copy | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 | |
Average Intel Core Ultra 7 155U (36706 - 77717, n=3) |
AIDA64 / Memory Read | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 | |
Dell XPS 13 9310 2-in-1 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Average Intel Core Ultra 7 155U (37978 - 62523, n=3) |
AIDA64 / Memory Write | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Dell XPS 13 9310 2-in-1 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Core Ultra 7 155U (38436 - 62982, n=3) |
AIDA64 / Memory Latency | |
Average Intel Core Ultra 7 155U (130.8 - 253, n=3) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
* ... smaller is better
DPC 延迟
LatencyMon 仅在打开我们主页的多个浏览器标签页时显示出轻微的 DPC 问题,而以 60 Hz 播放 4K 视频时则完美无缺,没有任何掉帧记录。
DPC Latencies / LatencyMon - interrupt to process latency (max), Web, Youtube, Prime95 | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
HP Spectre x360 14-eu0078ng | |
Dell XPS 13 9310 2-in-1 | |
Asus Zenbook Duo OLED UX8406MA |
* ... smaller is better
存储设备
我们的测试设备使用相同的 西部数据 PC SN740NVMe 固态硬盘,尽管容量增加了一倍(1 TB 对 512 GB)。正如下面的 DiskSpd 循环测试结果所示,性能稳定,在几分钟的压力后仅出现轻微-中等程度的节流。
* ... smaller is better
Disk Throttling: DiskSpd Read Loop, Queue Depth 8
GPU 性能 - Arc 4 感觉就像 Iris Xe
与 Core Ultra H 系列及其集成的 Arc 8不同,Core Ultra U 系列集成了 弧 4显卡。Arc 4 显卡的速度明显要慢 30%至 50%,甚至远远落后于较早的 Radeon 680M.事实上,新 GPU 的速度几乎没有超过 Iris Xe 96 EUs事实上,新 GPU 几乎没有比去年 Yoga Book 9 上的 Iris Xe 96 EUs 快多少,这一点可以从下面几乎完全相同的 3DMark 分数和游戏性能中看出。
电源配置文件 | 图形分数 | 物理分数 | 综合得分 |
性能模式 | 5390 | 19839 | 1843 |
平衡模式 | 5433 | 18727 | 1803 |
电池供电 | 5373 | 20285 | 1902 |
如Fire Strike 上表所示,性能模式、平衡模式和电池模式之间没有明显的性能差异。
3DMark 11 Performance | 7237 points | |
3DMark Cloud Gate Standard Score | 22940 points | |
3DMark Fire Strike Score | 4975 points | |
3DMark Time Spy Score | 1922 points | |
Help |
* ... smaller is better
Performance Rating - Percent | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Dell XPS 13 9310 2-in-1 |
The Witcher 3 - 1920x1080 Ultra Graphics & Postprocessing (HBAO+) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
HP Spectre x360 14-eu0078ng | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
Final Fantasy XV Benchmark - 1920x1080 High Quality | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Dell XPS 13 9310 2-in-1 |
Strange Brigade - 1920x1080 ultra AA:ultra AF:16 | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga Book 9 13IMU9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Dell XPS 13 9310 2-in-1 |
Dota 2 Reborn - 1920x1080 ultra (3/3) best looking | |
HP Spectre x360 14-eu0078ng | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
Lenovo Yoga Book 9 13IMU9 | |
Dell XPS 13 9310 2-in-1 |
X-Plane 11.11 - 1920x1080 high (fps_test=3) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9i 2-in-1 Dual Screen | |
HP Spectre x360 14-eu0078ng | |
Dell XPS 13 9310 2-in-1 | |
Asus Zenbook Duo OLED UX8406MA | |
Lenovo Yoga Book 9 13IMU9 |
Tiny Tina's Wonderlands | |
1280x720 Lowest Preset (DX12) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Dell Latitude 9450 2-in-1 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Graphics 4-Cores iGPU (Arc) (49 - 61.8, n=7) | |
Lenovo IdeaPad Flex 5 14IRU8 | |
1920x1080 Low Preset (DX12) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Graphics 4-Cores iGPU (Arc) (24.1 - 30.8, n=6) | |
Lenovo IdeaPad Flex 5 14IRU8 | |
1920x1080 Medium Preset (DX12) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Graphics 4-Cores iGPU (Arc) (21.1 - 24.2, n=5) | |
Lenovo IdeaPad Flex 5 14IRU8 | |
1920x1080 High Preset (DX12) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Graphics 4-Cores iGPU (Arc) (14.1 - 16.8, n=5) | |
Lenovo IdeaPad Flex 5 14IRU8 | |
1920x1080 Badass Preset (DX12) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Average Intel Graphics 4-Cores iGPU (Arc) (11.3 - 13.8, n=5) | |
Lenovo IdeaPad Flex 5 14IRU8 |
Cyberpunk 2077 2.1 Phantom Liberty | |
1280x720 Low Preset (FSR off) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Dell Latitude 9450 2-in-1 | |
Average Intel Graphics 4-Cores iGPU (Arc) (25.6 - 32.8, n=11) | |
1920x1080 Low Preset (FSR off) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Dell Latitude 9450 2-in-1 | |
Average Intel Graphics 4-Cores iGPU (Arc) (17.2 - 21.6, n=12) | |
1920x1080 Medium Preset (FSR off) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Dell Latitude 9450 2-in-1 | |
Average Intel Graphics 4-Cores iGPU (Arc) (13.8 - 17.6, n=12) | |
1920x1080 High Preset (FSR off) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Dell Latitude 9450 2-in-1 | |
Average Intel Graphics 4-Cores iGPU (Arc) (11.9 - 14.9, n=12) | |
1920x1080 Ultra Preset (FSR off) | |
Lenovo Yoga 9 2-in-1 14IMH9 | |
Lenovo Yoga Book 9 13IMU9 | |
Dell Latitude 9450 2-in-1 | |
Average Intel Graphics 4-Cores iGPU (Arc) (10.3 - 13, n=12) |
开机空转时,帧速率会出现多次下降。 Witcher 3提示后台活动中断或潜在的驱动程序问题。与此形成鲜明对比的是,2023 机型在进行相同测试时,帧速率稳定,没有微卡顿现象。
Witcher 3 FPS Chart
low | med. | high | ultra | |
---|---|---|---|---|
The Witcher 3 (2015) | 92.1 | 57 | 32.4 | 17.9 |
Dota 2 Reborn (2015) | 82.6 | 59.7 | 57.2 | 54.2 |
Final Fantasy XV Benchmark (2018) | 37.4 | 23.4 | 16.3 | |
X-Plane 11.11 (2018) | 34.7 | 28.3 | 23.6 | |
Far Cry 5 (2018) | 47 | 25 | 24 | 22 |
Strange Brigade (2018) | 118.1 | 50.8 | 37.7 | 30.3 |
Tiny Tina's Wonderlands (2022) | 30.8 | 24.2 | 16.3 | 13.8 |
F1 22 (2022) | 43.8 | 40.5 | ||
Baldur's Gate 3 (2023) | 16.2 | 12.6 | ||
Cyberpunk 2077 2.1 Phantom Liberty (2023) | 21.6 | 17.6 | 14.9 | 13 |
排放 - 明显更安静
系统噪音
虽然 CPU 和 GPU 性能平平,但风扇噪音却出人意料地比去年的机型小得多。运行 Witcher 3例如,2023 Yoga Book 9i 的最高噪音略高于 27 分贝(A),而 2023 Yoga Book 9i 则超过 34 分贝(A)。我们仔细检查了电源设置,并重复测试以确保结果不会改变。
Noise Level
Idle |
| 23.3 / 23.3 / 24.6 dB(A) |
Load |
| 26.2 / 27.3 dB(A) |
| ||
30 dB silent 40 dB(A) audible 50 dB(A) loud |
||
min: , med: , max: Earthworks M23R, Arta (15 cm distance) environment noise: 23.3 dB(A) |
Lenovo Yoga Book 9 13IMU9 Graphics 4-Core, Ultra 7 155U | Lenovo Yoga Book 9i 2-in-1 Dual Screen Iris Xe G7 96EUs, i7-1355U, WD PC SN740 512GB SDDPMQD-512G-1101 | Lenovo Yoga 9 2-in-1 14IMH9 Arc 8-Core, Ultra 7 155H, Samsung PM9C1a MZAL81T0HDLB | Dell XPS 13 9310 2-in-1 Iris Xe G7 96EUs, i7-1165G7, Toshiba BG4 KBG40ZPZ512G | HP Spectre x360 14-eu0078ng Arc 8-Core, Ultra 7 155H, Kioxia XG8 KXG80ZNV2T04 | Asus Zenbook Duo OLED UX8406MA Arc 8-Core, Ultra 9 185H, WD PC SN740 SDDPNQE-2T00 | |
---|---|---|---|---|---|---|
Noise | -14% | -21% | -22% | -5% | -22% | |
off / environment * | 23.3 | 22.6 3% | 23.2 -0% | 24.3 -4% | 23.4 -0% | 24 -3% |
Idle Minimum * | 23.3 | 23.1 1% | 23.6 -1% | 24.8 -6% | 23.4 -0% | 24 -3% |
Idle Average * | 23.3 | 23.1 1% | 23.6 -1% | 24.8 -6% | 23.4 -0% | 24 -3% |
Idle Maximum * | 24.6 | 23.1 6% | 25 -2% | 24.8 -1% | 25.6 -4% | 26.7 -9% |
Load Average * | 26.2 | 38.6 -47% | 34.8 -33% | 38 -45% | 25.6 2% | 39.4 -50% |
Witcher 3 ultra * | 27.3 | 34.2 -25% | 37.7 -38% | 38 -39% | 30.9 -13% | 39.4 -44% |
Load Maximum * | 27.3 | 38.3 -40% | 46.2 -69% | 41.5 -52% | 32.6 -19% | 39.4 -44% |
* ... smaller is better
温度
因此,尽管升级了新的处理器,新机型的运行温度并不一定更低。
(+) The maximum temperature on the upper side is 39.2 °C / 103 F, compared to the average of 35.3 °C / 96 F, ranging from 19.6 to 60 °C for the class Convertible.
(±) The bottom heats up to a maximum of 41 °C / 106 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 30.7 °C / 87 F, compared to the device average of 30.3 °C / 87 F.
(+) The palmrests and touchpad are reaching skin temperature as a maximum (32.2 °C / 90 F) and are therefore not hot.
(-) The average temperature of the palmrest area of similar devices was 28.1 °C / 82.6 F (-4.1 °C / -7.4 F).
Lenovo Yoga Book 9 13IMU9 Intel Core Ultra 7 155U, Intel Graphics 4-Cores iGPU (Arc) | Lenovo Yoga Book 9i 2-in-1 Dual Screen Intel Core i7-1355U, Intel Iris Xe Graphics G7 96EUs | Lenovo Yoga 9 2-in-1 14IMH9 Intel Core Ultra 7 155H, Intel Arc 8-Core iGPU | Dell XPS 13 9310 2-in-1 Intel Core i7-1165G7, Intel Iris Xe Graphics G7 96EUs | HP Spectre x360 14-eu0078ng Intel Core Ultra 7 155H, Intel Arc 8-Core iGPU | Asus Zenbook Duo OLED UX8406MA Intel Core Ultra 9 185H, Intel Arc 8-Core iGPU | |
---|---|---|---|---|---|---|
Heat | 4% | -4% | -1% | 10% | 2% | |
Maximum Upper Side * | 39.2 | 37 6% | 40 -2% | 51 -30% | 39.3 -0% | 35.6 9% |
Maximum Bottom * | 41 | 37.2 9% | 43 -5% | 45.4 -11% | 45 -10% | 46.6 -14% |
Idle Upper Side * | 32.2 | 31.4 2% | 32 1% | 24.4 24% | 23.8 26% | 27.1 16% |
Idle Bottom * | 31.6 | 31.6 -0% | 35.2 -11% | 27.4 13% | 24 24% | 32.3 -2% |
* ... smaller is better
压力测试
在启动 Prime95 压力测试时,核心时钟频率和电路板功耗分别飙升至 3 GHz 和 34 W。然而,在几秒钟后达到 85 C 后,CPU 会降至 1.8 GHz 和 25 W,以保持 75 C 的低温核心温度。因此,最大 Turbo Boost 性能是短暂的,这也是采用 U 系列 CPU 的笔记本电脑的预期性能。
运行时,CPU 的封装温度将稳定在 83 摄氏度。 Witcher 3而去年的型号为 75 C。
CPU 时钟 (GHz) | GPU 时钟 (MHz) | CPU 平均温度 (°C) | |
系统闲置 | -- | -- | 54 |
Prime95 压力 | 1.9 | -- | 75 |
Prime95 + FurMark 压力 | ~1.5 | ~1150 | 73 |
Witcher 3 应力 | ~1.8 | 1950 | 83 |
发言人
Lenovo Yoga Book 9 13IMU9 audio analysis
(+) | speakers can play relatively loud (84.1 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 8.2% lower than median
(±) | linearity of bass is average (7.5% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.3% away from median
(+) | mids are linear (3.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 1.3% away from median
(+) | highs are linear (2.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (7.4% difference to median)
Compared to same class
» 2% of all tested devices in this class were better, 1% similar, 98% worse
» The best had a delta of 6%, average was 21%, worst was 57%
Compared to all devices tested
» 1% of all tested devices were better, 0% similar, 99% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Apple MacBook Pro 16 2021 M1 Pro audio analysis
(+) | speakers can play relatively loud (84.7 dB)
Bass 100 - 315 Hz
(+) | good bass - only 3.8% away from median
(+) | bass is linear (5.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 1.3% away from median
(+) | mids are linear (2.1% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 1.9% away from median
(+) | highs are linear (2.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (4.6% difference to median)
Compared to same class
» 0% of all tested devices in this class were better, 0% similar, 100% worse
» The best had a delta of 5%, average was 18%, worst was 45%
Compared to all devices tested
» 0% of all tested devices were better, 0% similar, 100% worse
» The best had a delta of 4%, average was 25%, worst was 134%
能源管理
耗电量
运行 Witcher 3的功耗约为 30 瓦,而 2023 型号的功耗为 45 瓦。因此,较新的 Arc 4 GPU 可以提供与 Iris Xe 96 EU 相同的图形性能,但功耗却大大降低,从而实现更出色的每瓦性能。这很可能就是上文提到的风扇噪音水平低于预期的原因。
(编者注:本月晚些时候,当我们的 Metrahit Energy 万用表维修完毕后,我们将更新本节内容。不便之处,敬请谅解。)
Off / Standby | 0.32 / 0.6 Watt |
Idle | 7.1 / 9.1 / 18.4 Watt |
Load |
51.3 / 65.5 Watt |
Key:
min: ,
med: ,
max: Metrahit Energy |
Lenovo Yoga Book 9 13IMU9 Ultra 7 155U, Graphics 4-Core, , OLED, 2880x1800, 13.3" | Lenovo Yoga Book 9i 2-in-1 Dual Screen i7-1355U, Iris Xe G7 96EUs, WD PC SN740 512GB SDDPMQD-512G-1101, OLED, 2880x1800, 13.3" | Lenovo Yoga 9 2-in-1 14IMH9 Ultra 7 155H, Arc 8-Core, Samsung PM9C1a MZAL81T0HDLB, OLED, 2880x1800, 14" | Dell XPS 13 9310 2-in-1 i7-1165G7, Iris Xe G7 96EUs, Toshiba BG4 KBG40ZPZ512G, IPS, 1920x1200, 13.4" | HP Spectre x360 14-eu0078ng Ultra 7 155H, Arc 8-Core, Kioxia XG8 KXG80ZNV2T04, OLED, 2880x1800, 14" | Asus Zenbook Duo OLED UX8406MA Ultra 9 185H, Arc 8-Core, WD PC SN740 SDDPNQE-2T00, OLED, 2880x1800, 14" | |
---|---|---|---|---|---|---|
Power Consumption | -9% | 10% | 40% | 35% | 4% | |
Idle Minimum * | 7.1 | 6.9 3% | 4.2 41% | 2.6 63% | 3.2 55% | 6.9 3% |
Idle Average * | 9.1 | 11.6 -27% | 7.1 22% | 6.4 30% | 4.2 54% | 10.2 -12% |
Idle Maximum * | 18.4 | 20.8 -13% | 12.9 30% | 7.7 58% | 4.9 73% | 10.9 41% |
Load Average * | 51.3 | 55 -7% | 58.9 -15% | 29.9 42% | 40.5 21% | 52.8 -3% |
Witcher 3 ultra * | 41.5 | 44.9 -8% | 49.5 -19% | 32.2 22% | 37.9 9% | 43.2 -4% |
Load Maximum * | 65.5 | 68.1 -4% | 66.7 -2% | 47.5 27% | 68.6 -5% | 67.1 -2% |
* ... smaller is better
Power Consumption Witcher 3 / Stresstest
Power Consumption external Monitor
电池寿命
在禁用第二个屏幕的情况下,无线局域网的电池使用时间几乎与去年相同,约为 10 小时。但是,如果同时启用两个屏幕并显示大部分白色,我们的 WLAN 运行时间将减少近一半,仅为 5.5 小时。由于绝大多数网站的背景都是白色,在两个 OLED 屏幕上打开多个浏览器标签会对电池寿命造成巨大影响。
Lenovo Yoga Book 9 13IMU9 Ultra 7 155U, Graphics 4-Core, 80 Wh | Lenovo Yoga Book 9i 2-in-1 Dual Screen i7-1355U, Iris Xe G7 96EUs, 80 Wh | Lenovo Yoga 9 2-in-1 14IMH9 Ultra 7 155H, Arc 8-Core, 75 Wh | Dell XPS 13 9310 2-in-1 i7-1165G7, Iris Xe G7 96EUs, 51 Wh | HP Spectre x360 14-eu0078ng Ultra 7 155H, Arc 8-Core, 68 Wh | Asus Zenbook Duo OLED UX8406MA Ultra 9 185H, Arc 8-Core, 75 Wh | |
---|---|---|---|---|---|---|
Battery Runtime | -4% | -1% | 6% | -9% | -8% | |
WiFi v1.3 | 608 | 586 -4% | 600 -1% | 643 6% | 555 -9% | 561 -8% |
Reader / Idle | 680 | 855 | 1525 | |||
Load | 219 | 93 | 205 | 129 | 146 | |
H.264 | 999 | 820 |
Pros
Cons
结论:更安静,但速度不快
CPU 升级通常会提高性能,这也是人们的合理预期,但 2024 版 Yoga Book 9i 并非如此。2024 版不仅运行速度比前代 2023 版更快,而且运行更安静、更省电。因此,用户在获得类似的性能水平的同时,还能延长较新机型的电池续航时间。这可能会让那些希望获得更快性能的用户感到失望,但这些变化至少可以改善要求苛刻的应用程序的运行时间。
联想 2024 Yoga Book 9i 带来了更高的能效、人工智能加速和更安静的风扇噪音。不过,性能和功能同比持平。
有趣的是,2024 型号的售价为 2000 美元,而 2023 型号目前的售价为 1900 美元。价格差异比预期的要小得多,这意味着至少目前你可以购买 2024 型而不是 2023 型。希望在未来的几个月里,我们能看到 2023 机型更大幅度的降价,让更多的人能够买到 Yoga Book 9i,尤其是这两个版本在外观、显示屏和整体性能方面都是一样的。
价格和供应情况
联想现已开始发售搭载 Core Ultra 7 155U 的 Yoga Book 9i,起价 2060 美元。
Lenovo Yoga Book 9 13IMU9
- 04/20/2024 v7 (old)
Allen Ngo
Transparency
The selection of devices to be reviewed is made by our editorial team. The test sample was provided to the author as a loan by the manufacturer or retailer for the purpose of this review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review. We never accept compensation or payment in return for our reviews. As an independent media company, Notebookcheck is not subjected to the authority of manufacturers, retailers or publishers.
This is how Notebookcheck is testing
Every year, Notebookcheck independently reviews hundreds of laptops and smartphones using standardized procedures to ensure that all results are comparable. We have continuously developed our test methods for around 20 years and set industry standards in the process. In our test labs, high-quality measuring equipment is utilized by experienced technicians and editors. These tests involve a multi-stage validation process. Our complex rating system is based on hundreds of well-founded measurements and benchmarks, which maintains objectivity. Further information on our test methods can be found here.