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Twin 3870's Can you OC?

Forum Graphic & Displays : ATI - Twin 3870's Can you OC?

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Wicked   01-12-2008 at 05:42:41 AM

I got my HIS's the other day and I have had no luck at all. When I had just the one card in I was able to get it up to 850 and 1350 but once I tried it on both it just dies. Screen goes black and that it.

Anybody else had this happen?

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cpburns   01-12-2008 at 05:56:23 AM
- 0 +

bigger power supply

------------------------------ Phenom II X4 940 (3.6GHz @ 1.52vCore) : Arctic Cooling Freezer 64 Pro : 8GB OCZ DDR2-1066 : EVGA GeForce GTX 260 Core 216 (55nm), 701/1501/1175MHz C/S/M: Asus M3A78-EM 780G mATX Mobo : WD 750GB BE HD, SG 7200.11 1.5TB HD : Corsair 650W PSU
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Wicked   01-12-2008 at 06:13:44 AM
- 0 +

I have a 850 now.

I also just noticed that one card runs way hotter then the other. Is rivatuner able to control the fan on both cards?

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cpburns   01-12-2008 at 06:16:58 AM
- 0 +

i believe so. the dropdown at the very bottom should control which card it's pointing at. the other card may be faulty. the X850 may have been power hungry, but it's not going to match two 3870's OCed. what is your power supply?

------------------------------ Phenom II X4 940 (3.6GHz @ 1.52vCore) : Arctic Cooling Freezer 64 Pro : 8GB OCZ DDR2-1066 : EVGA GeForce GTX 260 Core 216 (55nm), 701/1501/1175MHz C/S/M: Asus M3A78-EM 780G mATX Mobo : WD 750GB BE HD, SG 7200.11 1.5TB HD : Corsair 650W PSU
 Reply to cpburns
Wicked   01-12-2008 at 06:24:09 AM
- 0 +

Hey its an OCZ 850 game stream.

I found this box you can see in the pic but for some reason its showing 4 devices. I switched to the 2nd one down and cranked the fan to 60% and it started to cool the other card, but only down to 51 C were as my other card is at 28 right now and thats the main one.

http://img402.imageshack.us/img402/5453/72387039oh7.jpg

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