Actual influence of flow rate on system temps

[gabe]

Very good job Confirms numerically what we knew empirically about parallel GPU being the best solution (with a CPU in loop). This will be of great help when giving advice for newcomers.

If your remark in parenthesis "(with a CPU in the loop)" signifies that you believe that a dedicated loop will reverse the results, then do I have news for you! We also tested a dedicated GPU loop performance, but did not publish the results yet in order to stay in sharp focus on the topic. Parallel loop performance of these blocks was also superior to serial in a dedicated loop.. this will be discussed in another chapter of this review.

gabe
why not running furmark and linx at the same time for loading both gpu and cpu @ 100%

haven't tried linx, but the problem is not with CPU load, it is with GPU load. As you load up the CPU, the second GPU drops in usage to 0.

I think his title is alluding to the serial vs parallel gpu differences, where flow is the determinant. But yes, the difference in cpu vs cpu+gpu is a lot from idle TDP of gpu as well as flow. You would have to unplug gpu and use separate air cooled gpu to test just flow differences, but not real world use.

rge, I think you missed the part where we precisely showed the impact of the thermal load from the GPU at idle onto the CPU to be 0.34C , and the impact of reduced flow rate to be another 0.34C, for a total impact of adding 1 GPU to a CPU loop of 0.68C.