Originally Posted by The Sandman
What, if any, fans do you run in the top three fan mounts? I think you're fighting two issues here. 1st. not enough fresh cool air entering the case. You could block off the 2nd and 3rd fan locations in the top and run an intake fan in the first fan opening to help feed the Mugen cool air.
Second issue is yes, you'll be wanting a P/P fan setup for the Mugen. This is probably the biggest issue you'll have to cross before you can gain the stability you're after. 62c for CPU socket temp isn't going to hurt anything but is probably why your having troubles. Keep it closer to a max of 56-57c and you'll see better luck with stability. I know this as I had a Mugen mounted to my 1090T before I got my loop. They will work for what you have but it'll take a lot of fan rpm/noise to maintain. I already did the "Buy Better Fans" thing and when it's all said and over I would have been money and performance ahead had I just skipped this stage and got a better cooler solution sooner. The price of the Mugen plus two quality fans is only a few dollars less than just getting a D-14. The Mugen works great on quad cores, but without noisy high volume fans you'll be lacking on a hexacore. If you're staying with air cooling save yourself the headache and get a Noctua D-14 which should hold temps in check to around a 4.2GHz OC and runs near silent stock. You'll have even better performance with just another slight price increase and go with a Rasa RS360 750 kit which would fit inside the top of a 800D. With either the D-14 or Rasa kit you'll say good bye to temp issues forever.
You may want to enable Cool & Quiet which will lower idle temps a bunch too.
Also drop your HT Link Speed to 2000MHz +/- 100MHz.
I am going to have to wait on the fan upgrade for a while.... need to find a job first.
As far as the current setup, I have a powerful fan pulling in air from the bottom and a powerful one installed on the top to continue the pull.... and I can feel the airflow with my hand, so I know there is fresh cool air being supplied to both the mugen and the gtx 590 and the gtx 275. I need a better fan setup for the mugen, yes I know... and a better exhaust fan after the mugen....
I was testing the HT link speed, with higher mhz I get less bottlenecking on the gtx 590.... (seen as lower than full utilization during benchmarks), but that might also be my stability issue.... not sure....
See the thing is, I can boot to windows with 1.44 vcore.... but I get BSOD's when I stress it..... so I am not sure if it is the vcore that needs more or the cpu/nb that needs more..... I only tested up to 1.49 on the vcore and 1.29 on the cpu/nb