After chatting about what spec CPU & GPU would be a minimum for the Vive Pro, I see this, what do you reckon? :
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VR at 2.5K res @ 90fps - The HTC Vive Pro buyers guide!
For this comparison we assume typical 1440p (2.5k) gameplay equates to the Vive Pro's HMD resolution. Vive Pro's resolution is actually slightly more demanding than regular 1440p but we can also say most tailor made VR games are not as graphically demanding as say, Deus Ex: Mankind Divided.
Executive summary:
For gaming, an Intel Core i5 8400 performs slightly better and costs less than a last gen i7 7700K. Add a GTX 1080ti and you may just get that magic minimum 90fps in any first person perspective game on the Vive Pro at maximum quality settings. Add a GTX 1080 instead and you will need to drop down to at least 'High' quality to maintain a minimum 90fps.
CPU GPU pairing
(first person perspective gaming only)
i5 8400 + GTX 1080 =
75-95fps @ 1440p 'Ultra' quality
i5 8400 + GTX 1080ti =
95-125fps @ 1440p 'Ultra' quality
i5 8600K + GTX 1080 =
80-100fps @ 1440p 'Ultra' quality
i5 8600K + GTX 1080ti =
100-130fps @ 1440p 'Ultra' quality
Analysis:
- The i5 8600k adds 5fps for £65 more over the 8400
- The 1080ti adds 30fps for £200 more over the 1080
The cheapest pairing here would risk frequently dropping below 90fps at 1440p resolution with ULTRA quality. Drop that down two notches to HIGH quality and things should click along at a minimim of 90fps. But its cutting it fine and does nothing for future proofing.
The most expensive pairing here would almost certianly keep things above 90fps on ULTRA quality at all times, costing £265 more. The best value is to pair an i5 8400 with a GTX 1080ti for an extra £200 to get almost the same performance gain.
With all tests, there will be the odd moment where fps drop well below 90fps but recover almost immedietly. If ULTRA quality is a must, then get a 1080ti. If you are happy with HIGH quality or lower then a 1080 may just do the trick. Personally, if you are getting a Vive Pro and new rig from scratch, then an extra £200 for a GTX 1080ti guarantees a better experience for a relatively small percentage of a total build cost.
If an Oculus Rift is your game, then I strongly recommened the cheapest pairing here as the best choice of latest hardware.
(fps stats based on Guru3D.com's combined first person shooters at 1440p resolution game benchmarks with an i5 8600K and both GTX 1080 and 1080ti cards. i5 8400 performance extrapolated down from i5 8600K values.)"