Im in Serious need of a updated GPU my integrated one wont even cover todays Rpg, and Rts on medium settings, so time to get a upgrade based of my price range and Ratings i believe the Sapphire Radeon HD 6850 is the best choice, but im not sure what im required to have to run it, im going to buy a 600w PSU to power it, but i dont know if what else i need in my specs to run it here are some of them.
OS: Windows 7 Home Prem 64-bit
System Manufacturer: Emachines
System Model: Et1330/Et1331
Processor: AMD Athlon II X2 235e ~2.7Ghz
OS Memory: 6GB
i think my motherboards called HT 2000
6850 is a good improvement.
Sapphire Radeon is AMD. Any Radeon video cards are made by AMD , Sapphire,Gigabyte,MSI,XFX and others improve the reference video card with higher frequency ( overclock) and better cooling solutions.
The 6850 is a good card and all cards are good. I look for the warranty and customer service when looking into buying a card. Now if you are going to buy a PSU make sure it is a good brand name.
There are a lot of generic PSU's out there that are not any good. The brands you want are Corsair, Antec, Seasonic, and XFX and you don't need a 600w PSU to run that card. I will link you to the PSU's.
I am not sure if your CPU will be able to keep up with the 6850. I think you are right on the line of what people are calling it bottlenecting. I know that a 6770, and the 7770 don't have to much problems with 2 core CPU's.
It is just food for thought and I wish you good luck on this.