HD4870+HD4850 CrossfireX Results...

[erocker]

Check out my project log here: http://forums.techpowerup.com/showthread.php?t=64150

Some really nice results so far. Enjoy!:)

[xMrBunglex]

very cool. that's the first IceQ model i've seen so far. and that Gigabyte cooler for your 4850 is beefy. how does it work? forgive me if you mentioned it in your review - i'm just starting to read it now.

[erocker]

Thanks! The 4870 has an ATi reference cooler, the IceQ version probablly won't be available until mid-July sometime. They Gigabyte cooler was very easy to install and the card idles at 38c in a 75f room and maxes out around 59c with a couple runs of furmark. Tomorrow, I'm going to remove the mating surface and sqirt some thermal paste in between it and the heatpipes. I really like the way it looks.:up:

[C'DaleRider]

You really should have put some sort of heat sinks on the MOSFETs.....the little black boxes you left uncovered, right next to the copper sinks you put on it. I believe those are the larger heat producers and were certainly put into contact with the original heatsink that you removed from the card. Hate to see you burn the card up just because you neglected something simple like that.

http://jamayer.org/pics/4850ramsink%20copy.jpg

[xMrBunglex]

Thanks! The 4870 has an ATi reference cooler, the IceQ version probablly won't be available until mid-July sometime. They Gigabyte cooler was very easy to install and the card idles at 38c in a 75f room and maxes out around 59c with a couple runs of furmark. Tomorrow, I'm going to remove the mating surface and sqirt some thermal paste in between it and the heatpipes. I really like the way it looks.:up:

i went through your thread and saw you didn't have an IceQ. i just looked at your avatar and saw the IceQ's and assumed those were your 4870's. good thread.

[erocker]

You really should have put some sort of heat sinks on the MOSFETs.....the little black boxes you left uncovered, right next to the copper sinks you put on it. I believe those are the larger heat producers and were certainly put into contact with the original heatsink that you removed from the card. Hate to see you burn the card up just because you neglected something simple like that.

http://jamayer.org/pics/4850ramsink%20copy.jpg

They are fine and get plenty of air over them. You'll notice on many cards the mosfet's are open. I'm also out of heatsinks at the moment, I have some coming.:)