A few months ago my mother was complaining about how slow her old 2005 HP was. We went to MicroCenter and for slightly less than $200 we bought the necessary components to take it from 1GB DDR2-533, a Pentium D 830, and a Radeon X300 SE to 4GB DDR3-1333, a sandy bridge Pentium G645 using Intel HD 2500 graphics. I was able to reuse the old case, PSU, and hard drive. The DVD drive was IDE so that needed to be replaced with a SATA one. Pretty soon my little brother started using it pretty often to play Team Fortress. I had a Geforce GTS 450 that I got on ebay for $30 (it worked fine when I got it) that was just sitting around because I actually managed to break the damned fan on it. I decided to try something new and took the 80mm fan that was really just making noise as an unnecessary exhaust fan and tied it to the GTS 450. The motherboard doesn't feature any kind of advanced fan control so the 80mm fan runs constantly at above 2900rpm which works exceptionally well for the card. Under a constant 99% load playing Tomb Raider Underworld on high settings it stays just under 70 degrees Celcius. For a while it was just a single 1280x1024 monitor setup until the 10-15 year old speakers finally gave out, then I plugged in a 26" 1080p TV that wasn't in use through HDMI mostly for it's speakers, but I do enjoy the multiple monitors.