Vega 64 Being bottlenecked by i7 4790k @ 4.5ghz ?
6 hours ago, AngryBeaver said:In your infinite wisdom can you show me where the cpu is actually hitting it's limits before the gpu? In the last screenshot BOTH of them are below their limits. So when we then look at the first screenshot and see that the GPU is able to hit 99% usage, we can determine that chances are low that it is actually the CPU bottlenecking the card.
A bottleneck is always going to be present regardless... however, from all the information being supplied so far this is not one related to the CPU.
Because one of the 20 some odd threads a game runs can block the rest. If this happens, a CPU with 8 threads could be at below 30% usage and still be a bottleneck. And with how Windows schedules threads, you will not see a single core ever hit 100%. Ask anyone who had an FX rig and upgraded to a CPU with fewer cores for gaming.
You can try to minimize the issue (on Haswell at least) by using DDR3 2133+. In some games the main thread is very memory bandwidth or latency sensitive, so speeding up ram can help. Fallout 4 is a good example of this, and it realizes massive performance gains from using faster memory.
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