When sandwitched the top card has no air ventelation. Does your motherboard have 3 PCI-Express 16x slots?

Is there an air gap between the two cards or is it single pci-e slot spacing? Seams like the cards are dumping a lot of heat inside the case.

Is it as fast as the GTX495 which can cook a steak at 100,000,000 frames per second?

If you get a p55 board that's 16x and 4x your setup will be crippled in crossfire because the second slot runs pci express 1.1 at 4x through the southbridge.

CPU-Z shows base clock but it's running at 666 mhz. You can change the ratio in the bios.

I think crossfirex is used for crossfire now and crossfire was the older version where you needed a master card and a y cable dongle.

I have an EVGA FTW it does well. I was able to get my core i5 to 4.2 GHz with turbo mode. I could of gone higher but the VTT would of gone over the max recommended volts to get it stable.

Maybe you need a bigger thicker rad. If you use swiftech their rads are to thin, I had a mcr 320 and the rad would get luke warm with a Q6600 @ 3.6 GHz with a 4890.

[QUOTE="titanium_basic"]

Yeap, got me 2 5850 EK blocks the vrms only go to 48 C on load.

damstr

Nice! How high were you able to OC the core? I'm hoping to hit 1Ghz but not sure if the software can up the voltage high enough for that.

I haven't done any heavy OC yet only 800 core and 1000 mhz ram because I can max everything on my current games.

[QUOTE="JigglyWiggly_"]I hope you cool the VRMs, it's not the gpu core that isn't being cooled enough, but the vrms on the card get blisteringly hot. Anandtech has an article about it.damstr

Yeap, got me 2 5850 EK blocks the vrms only go to 48 C on load.