Originally Posted by miklkit
Enabling HPC does not fix the throttling. Not letting the VRMs get hot and warping the board, which pulls the VRMs away from the tiny heat sink which makes them get even hotter stops the throttling.
The best VRM cooler for the UD3 I have come across besides water is the Thermalright HR-09U TYPE 2. This makes a noticeable difference in temps even after it is warped, like mine is. Thenput a dedicated fan on it.
There are some people running the 6300 that hang out on the 990 FXA thread that can tell you the specifics but you should be able to
get 4.5ghz pretty easily. http://www.overclock.net/t/1023100/official-gigabyte-ga-990fxa-series-owners-thread-club
Sorry to comment this late on this thread. I also have a GA-990FXA-UD3 Rev 3.0 mobo, and I monitor the VRM section with a
temperature probe from my fan controller (I slid it from the top in between the stock VRM heatsink fins). During stability tests at
4.5 Ghz OC, the VRM temps show 78 C, which I believe is high. As a consequence, I took the advice you offered and purchased the Thermalright HR-09U, as well as 2 Fractal Design 40mm fans which I plan on attaching to the HR-09U. Well I received the parts today, unpacked them, removed the stock VRM heatsink, then started planning how I would secure the HR-09U to the mobo. It
appears the long side of the HR-09U is too long with the supplied clips to allow the pushpins to push through the provided
mobo holes. I suppose I could one pushpin, and maybe jerry-rig the other end with a thin spot tie.
Assuming I read correctly (that you attached a HR-09U to your GA-990FXA-UD3), could you provide me some guidance on how to
best attach the HR-09U to the GA-990FXA-UD3 motherboard?
Thanks in advance for any help!!