Bottlenecking

[dgg125]

How bad would I bottleneck if I put a 7800x3d and a rtx 2080 super in the same build and would it damage anything if I did? I'm doing this because I'm trying to downsize to an itx build and upgrade my setup and I want to eventually get a 4080 or preferably 4090 but I can't afford it yet. I have the cpu and motherboard and I want to see if I can just hold off on buying the gpu until save up for it.

[GeorgeMKane]

24 minutes ago, dgg125 said:

How bad would I bottleneck if I put a 7800x3d and a rtx 2080 super in the same build and would it damage anything if I did? I'm doing this because I'm trying to downsize to an itx build and upgrade my setup and I want to eventually get a 4080 or preferably 4090 but I can't afford it yet. I have the cpu and motherboard and I want to see if I can just hold off on buying the gpu until save up for it.

Bottlenecking ≠ damaging anything.

 

Bottlenecking is pairing an i3 or Ryzen 3 with a RTX 2080 super. With that cpu, you shouldn't get any bottleneck really. You might not see the FPS you want, until you get anything like a RTX 4070 or 4080 though.

 

https://pc-builds.com/bottleneck-calculator/result/1nt14v/1/general-tasks/1920x1080/

The bottleneck would be around 5.6% at the 1080p resolution, which is completely doable. If you're playing at 1440p or 4k though, it'll definitely be higher. I would recommend upgrading to at least something decent on the gpu side then.

[starsmine]

I wouldnt trust a bottleneck-calculator. 
The whole conversation around bottlenecks is misleading, its a mathematical inevitability. If no bottleneck happened, you would have infinite frame rates and we would have a solution n and np problems. 

You can also "bottleneck" but having a fast CPU and a gpu to slow to even be cpu constrained, your CPU is making frames and its not getting to its destination (your screen). 

Its all a bottleneck. its all Ahmdal's Law, both parallel and serial.  

[kitnoman]

Bottleneck in terms of what, gaming? 7800x3d+2080s wouldn't bottle your game. Just to give further information about bottlenecks between cpu vs gpu. It's all about which is the main part that's doing the work and if the other part can keep up. If this is for gaming, then it's the gpu. As basic explanation, bottleneck happens when a cpu can process 5 data per 1min, but the gpu process 20 files per min. Since the gpu needs to wait for cpu to finish, the end results is 5, so it's only working 25% of it's full potential. However, if it's reverse, if the cpu can process 20 data per min and the gpu process 5 per min, the results is 5. The first example would stock a gpu at 25% utilization and the 2nd, would keep it at 100% utilization. In your case, you have a much more powerful cpu and more than likely, you will see around 20-60% utilization on cpu and 100% utilization on 2080s. Which is good, it means it's doing it's job at it's highest.

Note: in bottleneck calculators, because technically, there would always be one. Anything below 10% is normal and I haven't check it yet, this setup would probably be at 3% or below at 1080p. But remember the calculation of those calculator is base on both having 100% or high utilization. In gaming, you just need the gpu to push it's max utilization. So in the bottleneck terms, your cpu is too powerful. But in terms of real world usage(gaming), you will be able to use your gpu perfectly fine.

[Red_TC]

On 7/13/2023 at 10:39 PM, dgg125 said:

How bad would I bottleneck if I put a 7800x3d and a rtx 2080 super in the same build and would it damage anything if I did? I'm doing this because I'm trying to downsize to an itx build and upgrade my setup and I want to eventually get a 4080 or preferably 4090 but I can't afford it yet. I have the cpu and motherboard and I want to see if I can just hold off on buying the gpu until save up for it.

hey! i just did this same build and it does great runs valorant ultra settings at 620fps which is great for my 500hz monitor