Is there a way to tell if a cpu will bottleneck a gpu according to the cpu specs?

[Couccun]

can i simply say: this i3000 has a clock speed of x so i can run a gpu with y cuda cores or is it just impossible to tell if a cpu would bottleneck a gpu according to clock speeds or cores?

[tikker]

Not possible, bottlenecking is not really a yes or no question and varies with different types of loads.

[Brooksie359]

Bottlenecks are completely situational so yes it would be impossible. The same gpu and cpu combination can have a cpu bottleneck in one game while having a gpu bottleneck in another. 

[BrinkGG]

3 minutes ago, Couccun said:

can i simply say: this i3000 has a clock speed of x so i can run a gpu with y cuda cores or is it just impossible to tell if a cpu would bottleneck a gpu according to clock speeds or cores?

A lot of the experienced guys on the forum can just tell by looking at the list if either would be a bottleneck, but it can also depend a lot on the game. 

For example: Rainbow six Siege is a CPU hog. I have an 8700k and a GTX 1060 6GB. GPU sits at 100% usage (as it should), but my CPU also sits close to 85% while playing. But what is odd is that changing affinity (Number of cores the program can use) to 4 cores instead of 6 doesn't decrease framerate... 

TL;DR, it depends on the game, but you CAN tell somewhat based on cpu cores and GPU power. 

example: an i3 7000 series and a GTX 1080 will most likely bottleneck in almost every game. But an i5 7000 series would not in most games. 

[Couccun]

well, thanks for the quick response

[BrinkGG]

8 minutes ago, Couccun said:

well, thanks for the quick response

No problem. If you have specific hardware you're curious about, feel free to ask here.