ADDITIONAL COMMENTS: I have purchased a Radeon 5850 that I planned to use with my older system. Upon recieving my first card it worked fine for 20 mins then I could never get it to show the boot screen again. I RMAed that card and got a different manufacturer's 5850. The first time I shutdown my machine was the last time I saw a picture or a boot screen. I have replaced my Power Supply and updated every driver/bios that I can find for my motherboard with no luck of getting this card to work. My older Radeon 3870 is working great still in the same computer. After doing some research, I think this is a MB /VC compatability issue. It appears many people with ASUS mother boards are having the same or similar problems that I am. That is the main reason I want to go ahead and upgrade (I was planning on doing so early next year anyway). Any advice on fixing this problem would be welcome as well but I am mainly interesed on your thoughts about the combination of my MB, memory and processor. If anyone has a better combo let me know.