I always check w1zzard's reviews for graphics cards as my first reference. The Ryzen review is very informative as well. Just a small suggestion: if the single thread and multiple thread benchmarks are marked clearly, although I am able to figure out, it would be helpful.
My understanding is...
The OP seems to have changed his/her mind about upgrading the Socket 775 system. Then, Crap Daddy has a good advice; socket 1155 and Sandy Bridge are the best options.
I agree with the previous post, increasing your RAM to 4GB is the best first upgrade.
Second step, I know you said you didn't know how but, overclock that Q6600 to 3GHz. You have a capable motherboard; just increase the FSB to 333 and see what happens. If you have instability you can increase...
Just stopped by to say thanks for the Vmod guide, bios file, and bios editor. I did the first pencil VGPU mod with my Visiontek 4850, flashed with newer version Powercolor bios, edited with RBE.
Stock Overclocked
Clocks 625/993 800/1100
VGPU...