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HD 4870 X2: PSU issue
hi,
I bought an used HD 4870 X2 yesterday, and I'm unable to use it properly: Crossfire is not working on 3D applications.
To test if the card is broken, I used GPU Z and I started the render test to see if the second GPU is working.
During the test, the GPU 1 is 100% working, and after some seconds the GPU 2 start to work properly... but, when i start the test, I hear a strange "beep" incoming from the PSU, and the card has a strange noise (like something inside which won't work).
So, when I force the second GPU to work, it works but I hear PSU beep & GPU noise, when I set it to work in 3D games, it simply won't work...
What is the problem? I have a pc with:
Asus P5LP motherboard
Core 2 Duo E6300 @1.86 GHz
3GB DDR2 dual channel (4 sticks)
Radeon HD 4870 X2 @800/1000
PSU: Nilox LC8600BTX 600W