Overclocked ATi 4890s: GPU only or full cover?

[jdcook]

If you are going the GPU only way, don't waste your time with the puny Zalman VRM heatsink. You really can't skimp on the VRMs with simple little aluminum heatsinks.

Sidewinder has both versions of Thermalright's new HD4870/90 VRM heatsinks. They look to be a pretty good match for WC'ing with a MCW60 on a HD4890. That combo is still more reasonably priced than a quality full cover GPU block...

I don't think you can run those in Crossfire. They should make "right" and "left" versions instead of horizontral and vertical.

[lichyetan]

how about the performance of aquagrafx 4890 full cover block ? anyone using it, how well does it cool the vrm ?