Ryzen 7 2700x vs i5 8600k?

[kevindsouza113]

Hi, I am planning to build a PC for gaming and flight simulation. Either of these CPU's will be paired with a GTX 1080. The flight sim I will be using is Prepar3D. How much fps loss would I expect between the i5-8600k and the Ryzen 7 2700x for P3D? If possible provide links to benchmarks between the two. Thanks!

 

[2sidedpolygon]

I can't find any good benchmarks for it online, but expect better performance with the 2700x.

 

[Kasper Jorgensen]

https://www.tomshardware.com/reviews/amd-ryzen-7-2700x-review,5571.html

 

[kevindsouza113]

I can't find any good benchmarks for it online, but expect better performance with the 2700x.

Are you referring to gaming?

 

[geofelt]

The prepar3D web site has the recommended specs as a quad core @3.5.
https://www.prepar3d.com/system-requirements/
My guess is that a 8600K with an overclock will be overkill from a cpu point of view.
I get some indication reading the Prepar3D forums that single thread performance is important.
8600K, 8350K and 8700K will all oc to about the same 5.0 level.
The difference is if you need 6/4/12 threads respectively.

For graphics, 8gb of vram, the GTX1080 should be ok there.

 

[kevindsouza113]

The prepar3D web site has the recommended specs as a quad core @3.5.
https://www.prepar3d.com/system-requirements/
My guess is that a 8600K with an overclock will be overkill from a cpu point of view.
I get some indication reading the Prepar3D forums that single thread performance is important.
8600K, 8350K and 8700K will all oc to about the same 5.0 level.
The difference is if you need 6/4/12 threads respectively.

For graphics, 8gb of vram, the GTX1080 should be ok there.

Yeah it is pretty single core dependent, especially with addon content (aircrafts,scenery etc). The game is not very demanding out of the box. But the addon content i mentioned really takes a toll on FPS and is actually essential to boost the realism factor.
TBH, I am confused between the 2700x and the 8600k because the cost nearly adds up to the same with the 8600k (including the air cooler). Figured 2700x would be a better deal for the same price, more cores with no extra cpucooler cost etc
What would you suggest for P3D?

 

[geofelt]

Be careful how you interpret task manager cpu utilizations.
Windows will spread the activity of a single thread over all available threads.
So, if you had a game that was single threaded and cpu bound, it would show up on a quad core processor as 25%
utilization across all 4 threads.
leading you to think your bottleneck was elsewhere.
It turns our that few games can usefully use more than 2-3 threads.

Ryzen 2700X can overclock in the 4.2 range; Intel k processors will be in the 5.0 range.

For this game, with budget no issue, the i7-8700K would be best.
With a severe budget issue, consider the 4 thread i5-8350K
Really, the 8600K is going to be about as good as it gets until the 9th gen processors arrive this fall.

 

[kevindsouza113]

Be careful how you interpret task manager cpu utilizations.
Windows will spread the activity of a single thread over all available threads.
So, if you had a game that was single threaded and cpu bound, it would show up on a quad core processor as 25%
utilization across all 4 threads.
leading you to think your bottleneck was elsewhere.
It turns our that few games can usefully use more than 2-3 threads.

Ryzen 2700X can overclock in the 4.2 range; Intel k processors will be in the 5.0 range.

For this game, with budget no issue, the i7-8700K would be best.
With a severe budget issue, consider the 4 thread i5-8350K
Really, the 8600K is going to be about as good as it gets until the 9th gen processors arrive this fall.

I dont mind going for the i5-8600k at all. Just a bit worried about how long it will last, especially because it is 6c/6t CPU. When games begin using multiple cores, which I think has already started, I hope it doesn't fall behind. I would like to extract atleast 5+ years out of this build without any need for upgrade.

Also a bit more insight on P3D that could help you better understand my dilemma, I have seen even 8700k's struggle to get above 60 FPS within the interior of the plane (or virtual cockpit). ¯\_(ツ)_/¯

Also can I gauge an approximate performance difference by comparing benchmarks (single core cinebench scores, geekbench scores, IPC rating etc) between the 2700x and i5 8600k?

 

[geofelt]

If game developers start making games that require more than 4 threads to run, they will restrict their market.
Not something they will willingly do.
Plus, it is much harder to write an app that can effectively utilize many threads.

As to relative merits of two processors, you can look at the passmark ratings of the 2700X
https://www.cpubenchmark.net/cpu.php?cpu=AMD+Ryzen+7+2700X&id=3238
and the 8600K
https://www.cpubenchmark.net/cpu.php?cpu=Intel+Core+i5-8600K+%40+3.60GHz&id=3100
You need to adjust for overclocking.