I'm not looking for anything special. I just need a new graphic card so my computer can pass the window media center cable advisor. I currently have a 300 watt power supply, and would rather not have to replace it.
I was looking at these but they dont list Power supply needed:
Pretty much all cards under $50 would be fine in a prebuilt with a 300w PSU, however you really should post full system specs if you want an accurate opinion (and also if you wish us to verify that its compatible). The 8400 above is an old card. You will be better off with newer technology.
The most powerful card that can run on a 300w PSU is a Radeon HD 7750, but there is no low profile version yet on the market although PowerColor has announced plans to sell one. However, it will like cost more than a standard full height Radeon HD 7750.