Hi everyone, I've been reading the forums for a couple weeks now but I only registered a moment ago to post this question:
I've recently built a new computer (first time building from scratch) with the following parts:
Antec Three Hundred Case
Sapphire HD 6850
ADATA 1600 (9 9 9 ?) timing DDR3 RAM
Phenom II X4 955 CPU
OCZ XStream 600W Modular PSU
Asus M4A88TD-V EVO/USB3 Motherboard
Sata 3 GB/s Harddrive and DVD drive of no particular importance.
The system booted up and windows installed just fine, everything seemed to work. However the 6850 was being recognized as "6800 series card" in dxdiag and AMD overdrive was grayed out.
After I fired up Windows Experience Index to 'benchmark' the system the graphics card started artifacting heavily. small 2 by 2 pixel blocks started appearing across the screen in spaced square patterns
After rebooting the system the blocks remained and got worse the longer the system was running until I turned it off again.
The graphics card came with a PCIE power adapter but I used the PCIE power cable from the PSU
I used the 8 pin ATX power cable instead of the 4 pin one on the mother board
Latest Catalyst driver installed
Could I have somehow ruined the card (the Asus mobo has a lot of overclocking utilities but I didn't touch any of them) or is the card just bad?
I will try installing again to see how it acts some time later today and I'll post the results.
EDIT: OS is a genuine windows 7 professional and I tested the rig with both pannels opened
EDIT: The screen looks fine in BIOS and at the glowing windows logo, I'm guessing that the video RAM is corrupted and that those screens don't use it. I'll hold off on closing the thread until the issue is resolved (which should be tomorrow), thanks guys.