Originally Posted by Aaronage
As far as I can tell, this is only a problem with Gigabyte motherboards. I haven't seen any complaints of throttling from MSI, ASUS etc. users, but quite a lot for Gigabyte 990FX-UD5, 990XA-UD3 etc.
Most reviews stuck with the AMD supplied Crosshair V (no throttling issue AFAIK) so I wouldn't say this was related to poor performance of Bulldozer, though it definitely doesn't help!
There are two things I have to shut off in my setup for the 990XA-UD3, three things if you are Liquid cooled. In the Advanced you need to turn off both AMD C1E Support and AMD K8 Cool&Quiet support. If you use liquid cooling you also need to open PC Health Status and turn off CPU Smart Fan Control, and sometimes the System Smart Fan Control, depending on which bios you are using. With Liquid cooling, the smart fan controls can't keep up with the more rapid temperature changes, so it run's about 5C warmer through all temperature ranges. I have two fans in Push/Pull, 1800 and 1600 RPM. They are quiet enough that the noise is slightly more than with the fan control turned on, but the computer runs much cooler.
With the very cool weather we have been having in So Cal, with the temps dropping into the 40s, down to the high 30s. It makes it very easy to sort out which temps are which in HW Monitor Pro.
TMPIN0 = System/Case = 37C
TMPIN1 = CPU = 32C
TNPIN2 = Northbridge = 31C
I am now 100% certain that the Northbridge is TMPIN2 because if I blow cold air in the NB Heatsink, TMPIN2's temperature drops. If I unplug my NB Fan, the temp goes up. The NB is also very sensitive to the Ambient room temperature. My boot drive is going bad, after 6 years of hard use. I will be replacing it with a SATA-III SSD. http://www.newegg.com/Product/Product.aspx?Item=N82E16820220602
I'm also going to have only 2 HDDs in the drive bay, so it should improve the cooling of the two remaining HDDs. The SSD will mount flat on the bottom 5.25 Bay, which is sort of a wind tunnel created by a Scythe Kama Bay fan. I bought that because i only needed 2 5.25 bays, and wanted a way to get more airflow through the case. I also made my side cover 120mm fan into an exhaust, which dropped the TMPIN0 temp about 2C, with no signs of throttling at all. Hope this helps.
RussEdited by theonejrs - 11/14/11 at 2:12pm