Trimble Bracegirdle wrote:
> I just started running a new C2D system with the popular GIGABYTE
> GA-965P-S3 Motherboard .
> I'm shaken by just how hot the hintsink on the NorthBridge gets within a
> very few minutes.
> To hot to touch for more than a few moments ..
> I've not had a Northbridge I felt I needed to worry about before so maybe
> this is OK ??
> I'm not overclocking (yet) ..all the voltages are set to 'Normal'.
> Does the N/B stay at a fairly constant Temp. ? or like CPU etc. depend on
> how hard the sys, is running.
> I have the Arctic Cooling Freezer 7 Pro on the CPU & this stands right up
> against & slightly over the
> N/B heatsink ..tho not in a way that provides much cooling..
> This makes it difficult to install a fan there ....
> But do I really need to ??? GIGABYTE have clearly designed the NorthBridge
> like this ???
> (")_(") Mouse
Intel generally writes a thermal design document for its recent chipsets.
On my current motherboard, the Northbridge is 10-12W, while for the 965
family, it is 19-28W. The number seems to climb with each generation.
The 28W number is for the chipsets with built-in graphics, while the 19W
number is for the P965. So at least you're using the "low powered" one :-)
The power level will depend on how many interfaces are "switched on" -
most users would be running dual channel, so both memory interfaces would
be running. And if you overclock the chipset (raise FSB), the power number
will only go up. Especially if the motherboard has some fancy Vchipset
adjustments that the BIOS is cranking. http://download.intel.com/design/chi...x/31305503.pdf
Notice in that document, how Intel uses a double sized Northbridge cooler,
*and* they assume 150LFM flowing over the heatsink fins. If the Gigabyte
heatsink is smaller than the Intel one, or your CPU cooler doesn't blow
very much air over the Gigabyte heatsinks fins, then yes, the heatsink
will get hot.
Having worked through some numbers before for something like this, my
conclusion was that a fan should be used. By placing a fan on the Northbridge,
you're not relying on some aftermarket cooler to blow in the appropriate