5450 1GB? HELP!!

[SkyMeh]

Hi,

I have a AMD Athlon 5000+ 2.6 GHz processor 4 GB DDR2 PC2-6400 RAM.
It seems that a 5450 (low profile) is the best card for a Slimline with a 160w psu w/o upgrading the psu, so would it run? Currently I have the orignal Nvidia 6150SE graphics that came with the computer.

Looking at this one: Radeon 5450 1 GB Low Profile (http://www.amazon.com/Asus-ATI-Radeon-HD5450-Silence/dp/B003AK2HJO)

Would it work in a s3321p Slimline with a 160w psu? It only consumes 19 watts at full load, according to Game Debate.

If not, would a 512MB work in here? But GD says that it consumes 20 watts, which is more... weird. Oh well.

Oh and I have a 1280x1024 monitor.
Thanks!

 

[SkyMeh]

After a little more research, I found that the memory clock plays a factor too... so now I'm looking at the Sapphire one. Which version is the best for my current power supply and computer? Thanks again!