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4k 120hz CPU impact?

VincentHanna

VincentHanna

VincentHanna

Caporegime
Joined
30 Jul 2013
Posts
29,639
I know that at 4k/60hz we are entirely GPU limited still - Even with the Ryzen 5000's

But what about 4k 120hz? Patiently waiting for my Asus Strix OC 3090, and I have a C9 OLED TV with HDMI 2.1 for 4k/120hz (and G-sync)

So is it going to be worth replacing my 3900x with a 5800x or 5900x to help boost those (up to) 120hz frame rates at 4k?
 
VincentHanna said:
I know that at 4k/60hz we are entirely GPU limited still - Even with the Ryzen 5000's

But what about 4k 120hz? Patiently waiting for my Asus Strix OC 3090, and I have a C9 OLED TV with HDMI 2.1 for 4k/120hz (and G-sync)

So is it going to be worth replacing my 3900x with a 5800x or 5900x to help boost those (up to) 120hz frame rates at 4k?
Click to expand...

This might be useful: https://www.techpowerup.com/review/amd-ryzen-7-5800x/18.html

It seems anything above 1080p see''s hardly any difference to there Zen2 counterpart, I wouldn't bother upgrading!
 
It tells me what I already know, that CPU's aren't important at 4k 60hz.

120hz might be a different matter though. I guess @iamtheoneneo is correct and I'll have to wait for somebody to benchmark 4k/120hz
 
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This is pretty much the only stat I'm interested in. I'm seeing some GPU headroom at 4k 120 but are these new CPU's going to solve this, and if so which one?

I would be upgrading from a 3700x and wondering what the gains will be.
 
I was tempted to upgrade from my 6700k to a 5950X. However, seeing 4K benchmarks with a 3090, I wouldn't notice the difference, since still GPU bound. Literally 1-5 FPS difference at the most. Minimum FPS values aren't that different either.

I'll wait for LGA1700 or AM5 next year. Brand new platform with DDR5, USB4, PCIE-V5, get it all done at once. Nice to give Intel a chance to fight back as well, though I'll get whatever's best for gaming at the time.
 
One game in particular that I saw GPU headroom was Death Stranding. It seems that the 3080 could push close to 120FPS at 4k but the usage sits around 80% in places. It might be a CPU limitation, or it might be software/engine.

With Gsync picking up the slack, I just don't know if it's best holding out for AM5. I think what really complicates the decision is the ease of upgrade if you're already on the AM4 platform, just a CPU drop in.

These new CPU's are awesome for gaming & content, smashing it out the park on all fronts. Then there's the possibility of people buying big Navi and getting another advantage. But for those of us on 4k@120 with a 3000 series NV card on a predominantly gaming use case, it just feels pointless.

Hopefully someone with a similar set up can provide some benches over the next few days and get us armed with information. :)
 
TNA said:
In his own conclusion. Literally every from what I hear has better results for AMD.
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Are you talking about how he unlocked the TDP limits on the Intel CPU's? That explains why Intel lost less than in other reviews, but shouldn't effect a comparison between different AMD CPU's.
 
Twinz said:
Are you talking about how he unlocked the TDP limits on the Intel CPU's? That explains why Intel lost less than in other reviews, but shouldn't effect a comparison between different AMD CPU's.
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Nope. I think he was using 3200Mhz for starters.

As I said in another thread, best check more than one review before coming to a conclusion.
 
Has anyone with a 3080 paired it with a 5900x yet? I'm really undecided on whether to pick up a 5900x, and all the gushing benchmarks are at 1080p - like there's heaps of people buying these for 1080p. :rolleyes:

Would be great to see some 4k performance figures.
 
VincentHanna said:
I know that at 4k/60hz we are entirely GPU limited still - Even with the Ryzen 5000's

But what about 4k 120hz? Patiently waiting for my Asus Strix OC 3090, and I have a C9 OLED TV with HDMI 2.1 for 4k/120hz (and G-sync)

So is it going to be worth replacing my 3900x with a 5800x or 5900x to help boost those (up to) 120hz frame rates at 4k?
Click to expand...

If you’re GPU limited at 4K/60hz you’re going to be even more GPU limited at 4K/120hz.
 
Dave2150 said:
I was tempted to upgrade from my 6700k to a 5950X. However, seeing 4K benchmarks with a 3090, I wouldn't notice the difference, since still GPU bound. Literally 1-5 FPS difference at the most. Minimum FPS values aren't that different either.

I'll wait for LGA1700 or AM5 next year. Brand new platform with DDR5, USB4, PCIE-V5, get it all done at once. Nice to give Intel a chance to fight back as well, though I'll get whatever's best for gaming at the time.
Click to expand...
Is LG1700 / AM5 confirmed for 2021 release? DDR5 / PCIE-v5 I dont personally think will be ready until 2023 at the earliest. Why are people asking about PCIE-v5 when PCIE-v4 isnt even used yet? :D

That said, if I knew for a fact ddr5, usb4 and pcie5 were being released next year i wouldnt have upgraded main parts to zen 3. It’ll be years before pcie5 / ddr5 is released is my guess. If its released even in q1 2022, then it’ll likely cost double what i just paid for a zen 3 build (£1000 for board, ram & cpu)
 
Both are probably going to be important, but a 3900X and Ampere card will probably be fine. I’d be more concerned about getting gsync running on the G9.
 
Guest2 said:
Is LG1700 / AM5 confirmed for 2021 release? DDR5 / PCIE-v5 I dont personally think will be ready until 2023 at the earliest. Why are people asking about PCIE-v5 when PCIE-v4 isnt even used yet? :D

That said, if I knew for a fact ddr5, usb4 and pcie5 were being released next year i wouldnt have upgraded main parts to zen 3. It’ll be years before pcie5 / ddr5 is released is my guess. If its released even in q1 2022, then it’ll likely cost double what i just paid for a zen 3 build (£1000 for board, ram & cpu)
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PCI-E generations are dictated by the server/workstation markets, where there are already PCI-Ev4 SSD's that saturate the available bandwidth. There's a market for PCI-Ev5 speeds, as this will open more possibilities of high speed storage, using less lanes than previously etc. No benefit for gaming of course.

LGA1700/AM5 are pretty much guaranteed for 2021, as is DDR5.
 
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