amuffin said: You're not telling us what a "budget" is.
popatim said: 6670 is the most power GPU that wont require a pcie power connector. It gets all its power from the pcie slot. It will run most games on low to medium setting depending on the resolution you use.I would suggest the 6850 for a few L more if you have a power supply with a pcie connector. A decnt 300w+ power supply would run a 6850 if you have enough ampoerage on the gpu rail (<10a)If you have to upgrade the PSU to run the 6850 then its probably not worth the expense.