Last night I ripped out the stock hsf, installed a cm hyper 212 evo, and the temp sitting in the BIOS (not idle) dropped from 64C to 38C. It's like the fins on the stock heatsink keep the center slightly raised! I also lapped the apu slightly. Besides cooler, it's also much quieter. What a nightmare getting it all back into a mini itx case.
I've got no room for a hyper 212 evo, because it would overlap my memory slots and take up space currently occupied by my Corsair Vengeance memory.
However, the CM Seidon 120M arrived, and I added an additional fan to transform it into the 120XL. I bumped up the clock on the iGPU (Radeon HD 8670D) from stock at 844MHz (where it was still getting up to 85C under load), to 1169MHz, and under the same load it had before it never got above 49C. It has also gone from 43C at stock and idle to 35C @ 1169MHz and idle. I may try bumping it up some more later. It has already increased my frame rates in Tomb Raider 2013 by about 35% over what it was. It has also resolved the tearing issue I was having, and the stuttering issues.
About the CPU frequency, I can't seem to bump it up over 4400MHz and it stay stable with Prime95. I'm getting stable iGPU, but not CPU.
I'll post another screenshot of the new settings once I get them finalized.
EDIT: I've gotten it to 4800MHz tested with Prime95, and it's completely stable, temp never gets above 44C. It actually hovers around 43C and occasionally, briefly flickers to 44C. The iGPU is stable at 1085.5MHz. I tried 1169MHz, and it worked fine and was stable while gaming, but other stress tests caused a BSOD. However, while I noticed a substantial frame rate improvement and the elimination of tearing when I went from 1013 to 1085, there was no noticeable difference between 1085 and 1169. I saw in one post that if you go above your memory clock, it ceases to improve performance until you boost the memory more. Not sure how true that is, but my eyes seem to confirm it, whether true or not. I didn't do a frame rate comparison between 1085 and 1169, though. Perhaps later I will get to that.
Here's my updated screenshot stats. I have managed to get a 5200MHz stable, but had to reset the BIOS after hitting 5300MHz due to system lock up, and I lost my settings. I failed to write down everything over 4800, so starting over from there. Grr! Hope to make it back to at least 5100 later, perhaps first part of the next week. At least 4800MHz puts me in 2nd place.
So, my stats are:
EDIT: This time I ran Prime95 for an hour instead of only 10 minutes between increases in clock, and discovered I get an error with Prime 95 on 2 of my cores at 4900MHz, but at 4800MHz I am completely stable. While my system seems to run fine at 5200MHz, I don't trust it long term, so I'm going to lock it in at the 4800MHz speed.
You can add me to the list now, please.
