I've decided to go Nvidia for my card, but I don't know if my PSU can handle the Ultra: I have a Zalman ZM400B-APS with 18A on the +12VDC Rail PSU-> http://www.zalmanusa.com/usa/product/view.asp?idx=76&code=015 CABLE DETAIL-> below Also in the case will be: FX-55 74G Raptor SATA SBLive 2 IDE Hard Drives 1 CD Burner Anone have any experience with this? I would hate to buy an Ultra online that I can't return for something else (common policy). I know people say buy a GT then OC, but I'd rather start with an Ultra and OC that ;) if possible Thanks

400 watts? yeh thats fine. Asus A7N8X-X AMD XP 3200+ Corsair PC3200 512 Geforce 6800 OC

NOOOOOOOOOOO its not fine! When i first bought my 6800U i had a 425 watt Power supply from pc power and cooling and even that was not enough for my system. The problem was when i played 3d games the computer would shutdown\turn off so i replaced it with a OCZ 520 watt power supply and my shutdown problems went away. Nvidia recomends atleast 450watt psu. Granted, my system has 512 megs more ram and 2 roms more than yours but im willing to bet that the 400 watter still isnt enough for your system. my specs are below. Abit Nf7-s Version 2.0 With Merlin Mod BIOS AMD 2600 Moblie @ 2.585 GHZ. and 430 FSB Zalman Cnps-7000 All Copper CPU Fan OCZ Platinum Edition Dual Channel PC 3500 2x512 Western Digital 74GB 10000 RPM SATA HDD - P1=windows - P2 =Games Western Digital 200GB 7200 RPM SATA HDD - P1=Page File - P2=File Storage OCZ 520 Watt PSU 33A/+12v - 3 Adjustable power rails BFG 6800 Ultra OC @ 440 Mhz. core and 1.2 Ghz. Mem. Creative Labs Sound Blaster Live Platinum Creative Labs 16X DVD-Rom MSI 52x24x52 CDRW Kenwood 72x CD-Rom 1 80MM Case Fan/Front Bottom 1 80MM Case Fan/Rear Top All This in a server tower case from MIN - MAW 19 Inch CRT Monitor From Hansol Have the lambs stopped crying Clarice?

erhm... the PSU is a Zalman which makes excellent quality PSU's. Don't just look at the wattage, but also at the quality/brand. There are enough 520 Watt crap PSU's on the market. The one you have will do fine. I have a X800 Pro on that very same PSU and it works like a charm. Intel P4 3.2E Ghz@ 3.8Ghz Asus P4P800-E Deluxe Kingston 2x512MB PC3200 D-Channel Asus AX800 Pro WD Caviar 160 GB WD Raptor 37 GB Zalman Reserator 1

you obviously know nothing about OCZ and pc power and cooling power supplies. You should look up info on these products before you you say they are crap. Have the lambs stopped crying Clarice?

OCZ are good, I have used them in the past. At present I have 2 rigs with the Tagan 480Watt PSU. Mmm, a close call both are good, but in my humble opinion the winner is the Tagan due to the 28Amps on the +12v rail. Plenty of raw power. Go for either, your card will run well. AMD64Bit 3200+ "Clawhammer" - WinXP Pro. Nvidia:6800GT 1024MB 400MHz RAM Tagan 480Watt PSU: 28Amps on +12volt rail. MSI K8T Neo FIS2R M/Board