Help me on final decision

Question

After researching alot i'm deciding to buy either the MSI FX5700 Ultra-TD128 or the MSI FX5700 TD128, because i found a good deal on them and they are a lot better than the others available on the same price range. But i want to make sure there are no major compatibility problems.
here's my system:
-Albatron KM18G Pro Socket A FSB333 DCh400/Video+TV+AGP8x/5.1/lan
-AMD Athlon XP 2500PR 512K Barton Box
-DDR 400 Mhz PC-3200 OCZ Premier 512 Mb
-Maxtor DiamondMax Plus 8 40 Gb ATA133
-Medium Tower Vitsuba 400W
 I know it's difficult to predict but, do you think it will run stable on this system? i will
use it mainly with 3dsmax 5.1 and photoshop, no gaming for now.
this is what the PSU sticker says:
 +5V & +3.3V combined 220W
 +5V & +3.3V & +12V combined 380W
TOTAL OUTPUT 400W
 Do you think this is enough power for that card?, i won't overclock.
thanks for the help

Answer 1

Hi, Thanks for all replies
Bootstritty, you're right, i didn't explain myself fully. I meant that other inferior models(not brands) available at local computer stores were at similar prices or sometimes higher than this 5700U td128. For instance, in one store the 5600U was more expensive than the 5700U i found later in another store  
msivictim, i couldn't find anything on the web about which rails are used by the mobo, do i need some system utility to find that out? do u have some links that u can share?
These are the amps values:
 +3.3V  28A
 +5V     40A
 +12V    17A
If i ask questions about your explanation (i'm sure it was a very good explanation), there would be too many , because i'm totally newbie on this     , so for now, i'll try to find out which rail the mobo uses, and then i'll ask again
By the way, here are the differences between the MSI FX5700 Ultra-TD128 and the MSI FX5700 TD128, from the MSI site:
MSI FX5700 Ultra-TD128: 128MB DDRII SDRAM, MSI™ T.O.P. Tech Cooling,
 MSI™ Twin-BIOS,  MSI 3D!Turbo Experience™, openGL 1.5, fill rate: 1.9 billion pixels/sec., Memory Data Rate: 900 MHz
MSI FX5700 TD128: 128MB DDR SDRAM, fill rate: 1.7 billion pixels/sec., Memory Data Rate: 550 MHz
based on most responses i'm deciding for the ultra, but do you think it's worth the extra 50U$s for it even if i don't use AA or any effect (which i won't)?
-Albatron KM18G Pro Socket A FSB333 DCh400/Video+TV+AGP8x/5.1/lan
-AMD Athlon XP 2500PR 512K Barton Box
-DDR 400 Mhz PC-3200 OCZ Premier 512 Mb
-Maxtor DiamondMax Plus 8 40 Gb ATA133
-Medium Tower Vitsuba 400W
-------------------------------------------------------------------------------------------------