Originally Posted by brucethemoose
The Tempest OC/Qnix use a higher quality panel than the Asus ROG swift, so colors will be more accurate and more vibrant. Viewing angles will also be better, and I think contrast/black levels should be too. The Asus ROG Swift has a slightly faster pixel response time. If you have an Nvidia card, it also supports G-Sync.
So IMHO, the Tempest OC is a better general usage/2D monitor and better for slower paced games. But on Nvidia cards, motion will be smoother on the Asus ROG swift, so it's better for twitch/competitive FPS games.
The Tempest OC is significantly cheaper than the ROG Swift, which makes it a better buy IMHO.
Actually the ROG Switf has much better color accuracy than the X270OC even counting the slight color change at the edges of the screen due to viewing angles.
The primaries of the backlight on the X270OC are a bit off and it is not factory calibrated so the white point isn't that good either. A lot of colors have quite high dE's on the Tempest out of the box. Using my i1 Display Pro I have been unable to calibrate my X270OCs as well as my ROG Swift was calibrated at the factory. The ROG Swift has almost perfect color accuracy and the effect on color due to viewing angle at the edges of the screen is less significant (visually) then the error my Tempest OCs have over their entire screens. The non-uniformity due to viewing angles is noticeable on the Swift but the color change is not extreme enough to counteract the excellent factory calibration if you are talking about color accuracy
. The colors do look "better" in some way on the Tempest, it is an IPS while the Swift is a TN, but even that isn't very significant. The Swift is an amazingly good TN.
As a color accuracy nut I prefer the colors on the Swift; for example skin tones don't look quite right on the Tempest despite the best calibration I can do. However, most people don't seem to notice color errors of this magnitude, or even significantly worse.
Once you go G-sync you cannot go back. Even DA2 is better with G-sync and that isn't exactly a twitch/competitive game.
Adding in price it is hard to compare, there isn't a better gaming IPS than the X270OC for any price but the Swift is a better gaming screen (when with an Nvidia GPU) than anything else available and it costs a lot more.