Which AMD CPU i should buy for pure gaming, mostly single core performance? - Overclock.net - An Overclocking Community

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Which AMD CPU i should buy for pure gaming, mostly single core performance?

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post #1 of 23 (permalink) Old 11-06-2019, 03:31 AM - Thread Starter
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Which AMD CPU i should buy for pure gaming, mostly single core performance?

I plan to use my CPU overclocked as high as possible only to play flight/racing simulators in VR which are dependant on single core performance. (and bottlenecked by CPU because of VR).

On one hand i know in gaming mode 3900X disables some cores so number of cores doesn't matter in case and base frequency is higher in 3800X. Cooling could be easier also.

On the other hand 3900X has more cash, boost frequency.

Or maybe for single core performance with VR Intel 9900K OC to 5GHz is still better choice (I'm not intrested in other things like multitasking, streaming etc. at all)reverse phone lookupnba reddit pcpartpicker




I know i will have about 70-90 FPS in flight simulators in VR with [email protected] and 2080Ti @ 2000GHz. Every additional frame matters for my specific case. If i could have even 5 FPS more with Ryzen i'll choose Ryzen for sure.

Last edited by NuzakFarnas; 11-06-2019 at 08:46 PM.
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post #2 of 23 (permalink) Old 11-06-2019, 03:42 AM
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You will only get fewer FPS with Ryzens.

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post #3 of 23 (permalink) Old 11-06-2019, 03:54 AM
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If you are gonna game only then buy intel 9900ks you will get those 2-5 extra frames there.

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post #4 of 23 (permalink) Old 11-06-2019, 07:35 AM
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First I think you need to better confirm or demonstrate your bottleneck.

Try benchmarking the 9900k at the following settings:

9900k @ 5 ghz
9900k @ 4.5 ghz
9900k @ 4 ghz
9900k @ 5 ghz (with overclocked ram if not already tested)
9900k @ 5 ghz with hyperthreading disabled
9900k @ 5 ghz with half of the cores disabled (start menu --> msconfig --> boot tab --> Advanced options --> Number of Processors = 8)

The goal being to figure out a few things:
1 - Are you really cpu bottlenecked?
2 - If so, is it because of clockspeed?
3 - At what clockspeed does bottlenecking start/end?
4 - Does having fewer cores hurt performance? This might indicate that more could help.
5 - If not bottlenecked at 5ghz, what is the minimum needed to not bottleneck the gpu.

You may have done some of these tests already, and simply didn't mention them, but if you are already correct in your diagnosis of being a cpu bottleneck due to single threaded performance, than the answer is no amd cpu will be better than what you already have, maybe upgrade/overclock ram or explore higher end cooling.
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post #5 of 23 (permalink) Old 11-06-2019, 07:53 AM
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Quote: Originally Posted by NuzakFarnas View Post
I plan to use my CPU overclocked as high as possible only to play flight/racing simulators in VR which are dependant on single core performance. (and bottlenecked by CPU because of VR).

On one hand i know in gaming mode 3900X disables some cores so number of cores doesn't matter in case and base frequency is higher in 3800X. Cooling could be easier also.

On the other hand 3900X has more cash, boost frequency.

Or maybe for single core performance with VR Intel 9900K OC to 5GHz is still better choice (I'm not intrested in other things like multitasking, streaming etc. at all)



I know i will have about 70-90 FPS in flight simulators in VR with [email protected] and 2080Ti @ 2000GHz. Every additional frame matters for my specific case. If i could have even 5 FPS more with Ryzen i'll choose Ryzen for sure.
If the one and only thing you need is single-thread, then...

https://siliconlottery.com/collections/coffeelake-r

Nothing can beat the CoffeeLake in single-thread for now. SiliconLottery or a similar site will guarantee certain clocks, provided you have the money. It's possible to get a 9700K (8c/8t) with a guaranteed 5.2Ghz, which unless you get a golden chip that can do 5.3, is about the best you can hope for until new chips launch next year. Just make sure to follow their instructions.

There is no such thing as future-proof, but 8 cores should be plenty for a while even if simulators figure out how to multi-thread properly.

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post #6 of 23 (permalink) Old 11-06-2019, 11:46 AM
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Quote: Originally Posted by NuzakFarnas View Post
I plan to use my CPU overclocked as high as possible only to play flight/racing simulators in VR which are dependant on single core performance. (and bottlenecked by CPU because of VR).

On one hand i know in gaming mode 3900X disables some cores so number of cores doesn't matter in case and base frequency is higher in 3800X. Cooling could be easier also.

On the other hand 3900X has more cash, boost frequency.

Or maybe for single core performance with VR Intel 9900K OC to 5GHz is still better choice (I'm not intrested in other things like multitasking, streaming etc. at all)



I know i will have about 70-90 FPS in flight simulators in VR with [email protected] and 2080Ti @ 2000GHz. Every additional frame matters for my specific case. If i could have even 5 FPS more with Ryzen i'll choose Ryzen for sure.
I also play flight/racing sims in VR (Oculus), but I use my system for other tasks too. My 3900X + RTX2080 play very well with IL-2, DCS, Assetto Corsa, ACC, etc, but specifically flight sims, you absolutely need the best IPC plus frequency you can. These titles are heavily single threaded, where IPC plus high frequency is a must, so I recomend to get the 9900K and overclock it to the max if you want a system only to run those titles.

The Ryzens are doing an extremelly well job on that use case, but in order to get maximum performance on them, you have to go with the 5Ghz+ Intel chips.
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post #7 of 23 (permalink) Old 11-06-2019, 11:54 AM
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In strictly gaming, the 9900K (or KS if you really really want to make sure, not worth it imo) is simply better. Facts are facts.

The 3900X is almost as good in most things, and it's WAY better in certain other things (multi-core workstation loads) but for strictly gaming the 9900K is just plain better.

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post #8 of 23 (permalink) Old 11-08-2019, 09:04 PM
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Quote: Originally Posted by BonzaiTree View Post
In strictly gaming, the 9900K (or KS if you really really want to make sure, not worth it imo) is simply better. Facts are facts.

The 3900X is almost as good in most things and it's WAY better in certain other things (multi-core workstation loads) but for strictly gaming the 9900K is just plain better.
More like no, most games have wild fluctuations with a 9900k where zen 3 frametimes are much smoother.
Correct answer is it depends on the game.

I know i will have about 70-90 FPS in flight simulators in VR with [email protected] and 2080Ti @ 2000GHz. Every additional frame matters for my specific case. If i could have even 5 FPS more with Ryzen i'll choose Ryzen for sure
^
Imho you should just check for benchmarks on your specific game, if you are sure it just uses single core performance you might aswell invest in a binned 5.3-5.4ghz 7350k or similiar which are cheaper than a 9900k lol

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post #9 of 23 (permalink) Old 11-08-2019, 10:30 PM
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Ooooof, OP, reading your reasoning made my head spin.

Want an AMD CPU that will game like a champ long term just get the 3700X!

If money is no object, then 3950X (since every frame counts it seems).

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post #10 of 23 (permalink) Old 11-09-2019, 02:09 AM
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I'm pretty sure the 9900KS would suit your needs the best, unless the game you want the best performance in just happens to perform better on zen2(I haven't seen any game benchmarks yet where the 9900ks was slower).
It's probably better to ask on a forum related to the flightsim you want the best performance for but I think it's a pretty safe bet to go with the 9900KS in this case.
Maybe your sim performs better with smt disabled therefore you could go with the 9700k?
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