Budget speaking I'd like to keep it around 150$ US, more or less. I've forgot to mention HDMI 1.4a is a must because 1080P, TRue HD or DTS-HD. Is the more memory the better, like 4G in the GT 640 ? What is important to look for ? Core clock, CUDA ?
Should 7750 be from specific manufacturer ? there is an Asus one here: http://www.newegg.ca/Product/Product.aspx?Item=N82E16814121633
Thank you all for your prompt responses, it is really appreciated.