I need a low profile card and only have 250w power supply. The 2 cards I'm stuck between is the gt240 low profile and the hd5570. I'm pretty sure both will work on my computer as the gt240 low profile states 250w as the minimum power supply and the 5570 has very low power usage. I was also looking at the low profile 9600gt but I cant find it anywhere. The gt240 does cost a bit more then the 5570 and from some reviews I have seen the gt240 outperforms the 5570. However most of the reviews are using the gddr5 version and not the ddr3 version so I'm not sure about the validity of them. Then there's the fact that the 5570 has directx11 support.
The GT 240 is a bit faster than the HD 5570 and both use small amounts of power (the HD 5570 less). The HD 5570 may support DirectX 11, however if this was for gaming I wouldn't think that the card would be powerful enough to handle rendering DirectX 11 graphics. I'd say go for the GT 240, if you can find a 512 MB GDDR5 version, that would be best.
I'm not sure but I think the only low profile version of the gt240 is the 1gb ddr3 version. It is for gaming but currently I'm only using a resolution of 1024x768. My monitor does support 1280x1024 though, so could the 5570 do dx11 at these resolutions?
just checked and both the 5570 and the gt240 have gddr5 version. i know for sure that the gt240 gddr5 isnt low profile but im not sure about the 5570 gddr5 version. the 5570 gddr5 performance is very close to the 5670.
at your resolution you can play with dx11, but still the 5570 is not powerfull enough. Do not go for any 1gb cards as 512mb is more than enough for you. If you can save for some time and buy the 5670 instead. the 512mb version from sapphire dosent cost much