High temps for ATI 3870 X2's in Crossfire?

[chochoc]

Have 2 of these cards sitting very close to each other in Crossfire on an Asus P5E3 Premium motherboard, and the temps seem scarily high to me. Haven't been doing anything much on the PC except installing programs in Windows (Vista 64bit), and one of the GPU's is at 76 degrees - that's the one that shows as connected to the monitor and is the top card (not a lot of room underneath since the slots are very close). The others are at

49 degree's c
60
64

cpu temp 24 degrees, system 31 degree's, and 4 chassis fans currently running at about 1350rpm each (1 front intake, back exhast, 2 top intakes) in a Silverstone TJ-09 case. Though makes no difference to temps really lowering those down to 800rpm. Anyone else that has 3870 X2's in Crossfire what kind of temps do you get just idle in Windows? I'm thinking 76 can't be normal.

maybe it's possible to plug the DVI cable into the bottom graphics card that has more space inderneath for airflow, and see if that helps. Don't really want to have to downgrade to 1 card due to too much heat coming out, it's feeling abit like an oven at the back right now

 

[grudas]

rivatuner adjust your fan speed i did that for my 3850 crossfire

 

[Mud]

31% duty cycle in rivatuner, 53/33/44/42'C idles. 220mm fan on the side window.

 

[chochoc]

Thanks, much better now with Rivatuner adjusting the fan speed

49, 38, 43, 44

Using 31% duty cycle, might see if I can lower that down a couple of percent to reduce the noise abit, as long as it doesn't effect the temps too much.

 

[Mud]

I found the temps spike quickly dropping below 30%.