What is the best waterblock for chipset cooling?

[Butkick]

I already have a QTZ water block which is going nicely. But in idle in the BIOS the northbridge temps start at and increase to 65 as the time goes on. this is because the motherboard is turned upside down and the heat from the north-bridge is being trapped by the video card.
I am diceding between
Swiftech MCW30
XSPC X2O Universal Chipset Water Block

The MCW30 is flat on the inside while the zspc has a pin matrix and a back plate
MCW30 22 dollars
XSPC 34 dollars


Thanks

[Varroa]

Using the swiftech on my P45 chipset I never get temps over 36c. That is on a loop with with 4890 XXX all connected to a swiftech 2x120 rad. My case temps are on the high side, around 30c if that tells you anything.

[bottle]

Some will argue that NB waterblocks with pins are too restrictive, and thus the MCW30 does a good job of being not too restrictive but also working quite well. Of course, if you have your pump at high speeds anyway, then the XSPC shouldn't be a problem.

[biff]

I have an MCW30... does just fine. NB doesn't make enough heat to warrant anything other than a flat plate IMO.