OnePlus One

Oneplus 2 Vs Oneplus One
Source: Android Authority EN→zh-CN Archive.org version
So, there you have it – a look at the OnePlus 2 vs OnePlus One! Our full review is on its way, but it felt right to see where the updates were made from One to 2. In some places more than others, there is real progress that makes the follow up to the OnePlus One a worthy contender. While we will further see if the OnePlus 2 actually “kills” current flagships, we will make the case that the OnePlus One is still a very viable offering especially with its lower price point. That said, the OnePlus 2 still comes in at a pretty good price on its own, so it really only matters if you want to spend the extra money for features like the fingerprint sensor, the Alert Slider, a new USB standard, and of course the very powerful processor underneath.
Comparison, online available, Medium, Date: 08/19/2015

What's the difference between OPO and OP2? Why it's worth the wait for the OnePlus 2
Source: Tech Advisor EN→zh-CN Archive.org version
Given the massively improved specification of the OnePlus 2 over the OnePlus One, and the new features such as the fingerprint scanner, USB Type-C support and better camera, there's very little reason why you would want to choose the OPO over the OP2. Yes, the OnePlus 2 is a little more expensive, but it's still drastically cheaper than rival flagships that cost closer to £600. Our only worry with the OP2 is how easy it will be able to get hold of, despite the all-new invitation and reservation system. If the OnePlus 2 proves as difficult to get hold of as did the OnePlus One, you may find you have a choice of OPO vs OPO rather than OPO vs OP2.
Comparison, online available, Short, Date: 07/30/2015

93% OnePlus One
Source: Smartphone Magazin - Heft 3/2015
Single Review, , Length Unknown, Date: 05/01/2015
Rating: Total score: 93%

支持OpenGL ES 3.0标准的集成显卡。