Can 8X AGP card work in 4X AGP motherboard?

I mistakenly bought a new 8X AGP (Visiontek ATI X1950), installed in it and realized that my motherboard only accepts up to 4X. I can't take it back because the product is opened. Are 8X cards backwards compatible with 4X motherboards?

Thanks!

Matt

The system is 2 years old, so the motherboard is hopefully not the improper voltage. It is most likely a power issue to the card - I will go get a larger power supply to see that remidies the problem.

Matt

I did not realize you had an "issue". You mean the card is in but it is not working? What are the symptoms?

And yes, a 2-year old motherboard should have a 1.5V AGP. That's fine. If you have a Dell or some such, your PSU is 300W. Get a 500-550W PSU then.

You may still continue to have problems though. There is a suspicion that the current batch of X1950 PRO AGPs is using faulty digital voltage regulators which cause crashes and lockups.

My card ( x1600 agp x8 ) doesnt work on my other pc that support only 4X. Fan work but i got no screen, its pretty old comp tough, Dell precision 530 (2001-2002)