I've just signed up for this forum since I've been in the AMD Users team for quite some time now. I recently just upgraded my main machine and built two new machines a few days ago so now I am contributing the following:

3 x Phenom II X6's @ 3.5-4Ghz each [World Community Grid]
3 x Radeon HD 6850's (one of them is arriving in the mail today for my main machine to have CrossfireX) [DNETC@Home]
1 x Radeon HD 4870 [DNETC@Home]

I am thinking about building a fourth machine since Newegg accidentally gave me a free AM3 motherboard and power supply, and I've got a lot of spare DDR3 RAM. I shall continue to crunch 24/7 as always.

I've noticed that these 6850's are about 3x faster than the 4870 in BOINC applications, and they can even function well while gaming + BOINC at the same time, and the particular version I got was MSi R6850 Cyclone PE/OC which never goes above 54C with BOINC and makes near zero fan noise while having a 185MHz overclock from reference. A near zero FPS drop when doing both so I can now contribute while I am gaming.

I am 17 and almost have my first degree in IT, and will be working on getting my CompTIA certificates this summer.