I have a same problem! I bought MSI AMD Radeon HD 6670 2GB GDDR3 but it dont work good. i have pci express x16 1.1 and the gpu is 2.1
It has a reduce of perfomance.i was wanted to play far cry 3 and it didnt play at 60 FPS at 1024x768!!!! You kidding me? Game debate it says that ti plays!!!
PLZ some help! Do i have to change a motherboard?http://www.game-debate.com/
System Spec--> Intel Core 2 Quad Q6600 2.4GH/z
AMD Radeon HD 6670 2GB MSI
Windows 7 Ultimate 32 Bit