Hello,
I have a GeForce 9800GTX+ 512MB DDR3 in my PC now, I bought a Sapphire Radeon HD 5770 1GB DDR5 because I thought my GeForce was acting up. Turns out it was something else. So which card should I use.
The 5770 is faster all around. Not only that the 1GB frame buffer will make a difference in more memory intensive games while the 512 9800GTX+ will take a big hit. Use the 5770