Originally Posted by DJ4g63t
I honestly don't think there is anything wrong with the H50 or the way your mounting it. I think its your high ambient temps and the use of HT that are causing your high load temps. There is a certain point/clock when oc'ing where heat will start to rise quickly the farther you push it. Maybe you just hit that point at 4GHz. Have you run any stress test at a lower clock speed? I know on my chip just going from 4GHz to 4.33GHz it made my load temps rise 8C even with my low vcore.
Actually, I managed to do some things just now that got my temps nice and cool.
First, I switched my H50 to do push/pull intake from the rear instead of exhaust. The sheer length of the 5970 actually creates two spaces of air inside the case instead of just one, so it doesn't heat up any more than it did.
Second, the fan filters I was using (air conditioning filters) did keep dust out, but the airflow wasn't as good as I had hoped once the dust started to collect. So I left the H50 without a filter (for now), and it gets a blast of room air.
Third, I noticed my retention bracket was ever so slightly bent.
Applied a bit of force to straighten it out, and that seems to have helped. I noticed my TIM wasn't spreading like I expected before this.
Now at 4ghz HT on, 1.2825v, I get idles of 45-50, and it takes nearly an hour or so of Prime95 to get it to 80c, which used to take just a second. I'd say that's a huge improvement considering my ambients.