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MSI P67A-GD55 overclocking help - Page 2

post #11 of 12
your processor is not running great, you are thermal throttling. You need to back off the OC or get better cooling.
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X99 Main Rig
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post #12 of 12
Thread Starter 
Thanks for the advice. I definitely don't want to burn out the cpu by having it run too hot for too long.

I wonder what I can do to help keep the temperatures down. I currently have six fans, 3 fans near the front of the case and 3 near the top rear. With the way the case is designed, all three blow right over the hdds; two are on the side panel and one is on the front. I had to turn me rear exhaust fan inward because of the way my heatsink is situated. The heatsink pushes air toward the front of the case, so having a fan directly behind it pulling air out would likely cause problems. My only two exhaust fans are two 200mm fans at the top of the case. The exhaust fans are pushing air out like crazy and the air isn't very warm. Also, I am unable to stick a fan over the heatsink because it's so tall that no fan will fit between the side panel and the heatsink.

I'm aware that having the rear exhaust fan pointing inward isn't normally recommended given that the components below(gfx card and psu) is are expelling warm air out the back only to have it be pushed back in by the rear fan, but I wasn't sure what else I could do with that fan.

I just did the math and, currently, I'm pulling more air out of the case than I'm putting into it. I have two 200mm fans pulling air out at 322CFM at the top of the case, and three 120mm fans and a 140mm fan pushing air in at 141CFM and 62CFM, respectively. Here's the math in non word problem format:

Intake
-----------------------
120mm@47*3 = 141CFM
140mm@62*1 = 62CFM
-----------------------
Total - 203CFM

Exhaust
-----------------------
200mm 166*2 = 322CFM
-----------------------
Total - 322CFM

This tells me that I have negative pressure in my case at -119CFM. From what I understand, negative pressure is better for cooling. Please correct me if I'm at all wrong on that.

I'm not sure what I can do to improve cooling any further. I used Arctic Silver Céramique to tint the heatsink and applied between it to the CPU, following the instructions on the Arctic Silver website exactly. The room temp is roughly 22C. My PSU is at the bottom of the case and its fan draws air in from under the case and exhausts it out the back.

As mentioned before, I may not get 5Ghz, though it was a fun experiment and I'm definitely going to change it to something cooler when I get home. I'm obviously not too familiar with this whole overclocking thing I may go the lazy route and use OC Genie to tell me what I should be clocked at LOL.
Edited by dmlew - 2/3/11 at 12:17pm
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The Devil
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