Originally Posted by M3TAl
I'm wondering about 8bitG33k's airflow. Now we all know a 920 won't outperform a highend ~$60+ aircooler but I feel a 920 should beat a 212+ decently.
And it does beat the 212+ by about 10C. But only if you are willing to tolerate screaming loud fans. And the fans must be running at full speed all the time, ie no ramping because of the delay from the CPU temp rising until the liquid temp rises until finally Chill Control ramps up the fans. Otherwise the 89C spike in p95 (it's only during one particular worker thread where it maxes out at 89) will have come and gone by the time Chill Control reacts. This 10c gap decreases with lower fan settings. Then again I'm sure I could tweak the 212+ a bit to bring the temp down from it's 93 probably not by much though. Especially when considering that I ran the 212+ with a single fan in a push config this whole time and the 920 in push/ pull with 2 fans. But push/ pull on my 212+ yielded only a 1C difference on my old rig with a Q8300 oc'd to 3.0GHz.
As for airflow, so far I have adhered to the theory that exhausting hot air is more important than the intake of cool air, as the negative pressure created by the exhaust will pull in fresh air from the outside. That doesn't mean one shouldn't run any intake fans, just that it's not as important as exhausting hot air. I did add a 2nd 120mm intake in the drive bay after you suggested I should increase airflow, because I am always willing to accept and try out new ideas and I did have this dead spot right in front of the drivebay cage. I ran tests with both the 212+ and the 920 with the addtl fan both on and off but there was no difference in temps.
All my tests were overclocked, so another factor may
be as simpe as diminishing returns at higher clocks and voltages. ie, that both air and water coolers begin to perform similar when processing high heat. Just an idea, not saying that is the case.
Performance of the 920 aside - there may be something else I haven't considered yet that is contributing to my high load temps. This could be some setting in BIOS I haven't learned yet (like, I am just beginning to grasp Offset so I run at a fixed voltage, and a few other things) or I could simply have a low performing chip (aka a candidate for de-lidding).Edited by 8bitG33k - 3/1/13 at 10:24pm