couple questions to help better answer
1. what is your budget or how much is the 9400gt?
2. what are you doing with the gpu? which games do you want to play at what settings
3. what is your monitor resolution?
The card is $50 and my budget is about $150 i just want to get a good card cheap
and i want to be able to play some of the newer games at least but mostly i will be playing team fortress 2 and league of legends steam games mostly like i said i want a good graphics card cheap and i would LOVE to play them at maximum but if medium then im cool with that and my monitor is 1080p hope that helps
For a system using a single Radeon HD 6770 graphics card AMD specifies a minimum of a 450 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 24 Amps or greater and that have at least one 6-pin PCI-Express supplementary power connector.