Is a 5900X/5950X still a bottleneck for a 3090?

[TonyTurbo78]

Hi guys.

Reason I ask is, In so many games I'm seeing my 3090 not breaking a sweat but I've still got lots of headroom before hitting 120fps/144fps cap I've set. I very rarely see GPU usage go above 70% in the games I play yet looking at my fps overlay I'm never locked at 120 or 144 whatever I chose to set (when I stream and record I lock at 120 as it makes it smoother than 144. The thing I don't understand is my CPU usage, average across all cores will be like <20%

I've two rigs one with a 5900x and the other with a 5950x but moving the GPU to either system to test is the same. I game at 1440p, both CPUs hitting 4950mhz with the 5900x hitting a bit higher. Can you make me understand why this happens?

 

[TonyTurbo78]

You'd be cpu bound at 1440p in a lot of games. That 3090 would be put to much better use at 4k.

But how does that happen if my individual cores aren't being pegged at 100%, actually nowhere near that. I'm just trying to understand it.

 

[TonyTurbo78]

Interesting @everyone.

So a better upgrade would be to upgrade to a next gen CPU and platform rather than a 40 series GPU which will obviously exaggerate this CPU bottleneck even more. At times it feels like my 3090 is only being used at 50% of what it's capable of.

 

[TonyTurbo78]

Driving a 3090 to 100% usage at 1440p needs - besides a very fast CPU (which you kinda have), a high end / tuned ddr kit. What's your ram, and have you done any tuning with it?

Sorry for the late reply, long working hours and a 5 month old baby lol.

I'm using Corsair Vengeance 3600mhz DDR4 32gb (2x16) overclocked to 3800mhz using just default timings.

@stooeh i play a lot of racing sims, Iracing on triple 1440p setup (7680x1440p), Assetto Corsa, Assetto Corsa Competizione. Then just pretty much anything and everything really, bit of Borderlands 3, Rust, 7days 2 Die, Vampire Rising, Valheim.