Dragonfall I HAVE 2 7900GT OCs and they work fine. NOw I;m not saying that you are imagining things because I'm sure you know what artifacting is.
I say if you are FED UP with these cards and want to try another one, then do what these other guys recommend. They are all good solid recommendations.
HOWEVER.........I had 2 BFG 7800GTX OC's and I was having a problem with one of them. I Bought them here in Ottawa Canada but I dealt with the tech supp at BFG. After several driver tests and chipset swapping, I discussed it with them and we singled out the ONE PROBLEM CARD. After talking to him about the problem of replacing the ONE BAD CARD, I did not want to receive a card with (a different bios version, or another bad card, or etc etc) so he agreed that the best thing to do is RMA BOTH CARDS !!!!!
Long story short, he called me back once he received my cards and he told me that since these cards were brand new, they were going to move me up to 2 BRAND NEW 7900 GT OC's and before they ship them out, they were going to test both of them in SLI WITH GAMES,,,,,,, NOT JUST BENCHMARK TESTS cuz we all know that means SQUAT when it comes to playing games.
Bottoom line is I have my new cards back now and they work great!!!!
All I"m saying is that when you have different high performance parts working together, you have to expect some hiccups once in a while and have to have some patience when it comes to IRONING THEM OUT so to speak.
Give BFG tech a chance because they are good cards and their warranty is very good too. By the way I don't work for BFG, I just gave them some respect when trying to solve a problem and I was rewarded in return with 2 UNBELIEVABLE gaming cards
Hang in there Dragon it will be worth it
Mike aka paybax
RIG specs
Antec P180 PerformanceSeries Mid-Tower Case
SeaSonic S12 600 watt power supply
Asus A8N32 SLI mobo AMD N-Force 4 SLIX16 (bios 1103 V02.58)
RealTek 97 onboard digital 5.1 Surround
AMD Athlon 64 X2 4800+ Toledo Core, 2 X 1mb L2 cache (AMD drivers w/MS hotfix)
2 gigs of Corsair TwinX3500LL Pro @ 437Mhz 2-3-2-6-1T
2- BFG Tech 7900 GT OC 256mg in SLI (nvidia driver 91.31)
Western Digital RAPTOR 74.3 gig 10-K rpm HDD for XP & Apps
Maxtor SATA II 250 G HDD for gaming, movies, MP3's
Maxtor SATA II 250 G HDD for document backup (unplugged)
Sony CD rom 52X
Plextor 708-A DVD/CD rom
Logitech Z-5500 digital 5.1 THX Surround 500watts