Which GPU’s will my CPU bottleneck?

[Citizen Cook]

I game at 4K.
My CPU is an AMD 7700X
I have 32GB of 6000mt/s

If i were to buy a 4080 or even a 4090 would my CPU cause bottlenecks at 4K?

[_I_]

depends more on the game and display res and refresh rate

there is always a bottleneck somewhere

720p 300+hz
more likely to be cpu

4k60
with visual demanding game, more likely to be gpu

easy way to tell is to look at gpu load with all forms of vsync disabled
if gpu is <90% then the cpu is most likely holding it back
if gpu is >95% then the gpu is the weak point

doom2 can run at 4k60 on intel hd
so it really depends on the game and its settings

[I statistically lack a mic.]

You shoulduse a 4090 because there's no bottleneck but if you can't afford it get a 4080 super

[ChickenBalls]

wait for RTX 5090 if you play on 4K

[r.linder]

Your CPU will be fine with any GPU at 4K

[Rikku]

Yeah, you could probably even use a 4090 without a bottleneck. You're good with whatever you choose <3

[PopinFRESH]

And if you want to actually see the data on how balanced your system is for some game; download and install PresentMon[game.intel.com] and see how close your GPU busy time is to the frame time.

EDIT: for clarity, run the overlay while playing whatever game.

[Citizen Cook]

Originally posted by ChickenBalls:

wait for RTX 5090 if you play on 4K

My CPU would be ok with the 5090?! No bottleneck at 4K?

[PopinFRESH]

Originally posted by Citizen Cook:

Originally posted by ChickenBalls:

wait for RTX 5090 if you play on 4K

My CPU would be ok with the 5090?! No bottleneck at 4K?

Stop worrying about a bottleneck. You aren't building a restricted console, you are using a general purpose PC so there will be "bottlenecks" from different points in your system depending on what you're doing.

Like I said before, use PresentMon to see how well your system is balanced between the two main components in regards to gaming (CPU & GPU); then use the CPU & GPU features to balance whatever games workload (if you want to tweak things like that). Otherwise just play the game as a 7700X and 4090/5090 is going to play any current-gen game with very good quality settings at 4K.

In PresentMon, you'll want to see that the GPU Busy time is close to the frame time; .e.g. the GPU isn't sitting around idle doing nothing while waiting on the rest of your system to finish things before presenting a frame (thus it is bottlenecked by something else in your system).

If your GPU Busy is significantly lower than your frame time then you can start increasing game and/or system settings that are GPU loading. For example, Increasing the detail settings in-game. If you're already on the highest quality settings for the in-game settings of a game, ensure you've disabled internal resolution scaling if the game uses that and allows it to be disabled. If you still have more GPU headroom increase your resolution / reduce or disable upscaling; or use DSR/DLDSR to have the game render at a higher than 4K resolution and then use the GPU scaler to bring it down to your 4K output resolution.

There is no such thing on a general purpose PC as "not having a bottleneck" if you are just expecting a console-like "install game and play it" without doing any tuning.

[AmaiAmai]

I've yet to see any optimized game that can saturate a CPU with the 7700X performance or greater. That some games come out buggy and run like ... is more on the lazy devs.

Honestly in my opinion, no one should need the most expensive hardware to game since nothing really groundbreaking in fidelity is happening.

Just more bloat and nonsense to artificially bog down hardware and push sales. But we can't talk about that...

[Monnsteri]

Neither

[[-iD-]]

the 4080 and 4090 are bottlenecked by all cpus.
there is not a cpu that exists yet that can use all of their power.
and no game has yet either.

[Citizen Cook]

Originally posted by -iD-:

the 4080 and 4090 are bottlenecked by all cpus.
there is not a cpu that exists yet that can use all of their power.
and no game has yet either.

At 4K?

[[-iD-]]

Originally posted by Citizen Cook:

Originally posted by -iD-:

the 4080 and 4090 are bottlenecked by all cpus.
there is not a cpu that exists yet that can use all of their power.
and no game has yet either.

At 4K?

correct- the cpu produces the frames at 4k the cpu can not push those frames to the gpu fast enough.

[_I_]

Originally posted by -iD-:

Originally posted by Citizen Cook:

At 4K?

correct- the cpu produces the frames at 4k the cpu can not push those frames to the gpu fast enough.

its the same data that the cpu sends the gpu no matter what res
its only more work for the gpu to create the frame at 4k

[[-iD-]]

Originally posted by _I_:

Originally posted by -iD-:

correct- the cpu produces the frames at 4k the cpu can not push those frames to the gpu fast enough.

its the same data that the cpu sends the gpu no matter what res
its only more work for the gpu to create the frame at 4k

you lack discipline
https://www.techspot.com/article/2837-cpu-performance-4k-gaming/