Hi, First time poster, so please pardon any duplicate question. (Though a search came up empty.) I currently have a 2008 Mac Pro 3,1 that I inherited recently. I needed a desktop with some extra oomph to run some programs I needed for grad school. Trouble is, they're Windows only. So I worked with IT here and replaced the OS so that it only runs Windows 7 (i.e., no OSX)... Think of it as a reverse Hackintosh That said, the specs are decent: 16 GB RAM 3x HDD (1, 1, 2 TB, respectively) 2x Intel Xeon 2.8GHz CPU ATI Radeon HD 2600 XT GPU But I'm still contemplating some upgrades, loosely in the order GPU--RAM--HDD (well, SSD)--screen. My question is three-fold. 1) Is upgrading components possible without completely scrambling my OS setup? 2) I recently decided to donate the unused computing power to a BOINC project. (I'm a scientist, so this is important to me.) However, though not a serious gamer, I dabble occasionally and even with the BOINC task suspended, games are laggy. Excepting something on the BOINC side, I'd like to think this reflects the age/weakness of the GPU (it's 2008 era, after all). I'm not particularly computer literate, so I'd appreciate any insight as to what new GPU unit would be best in this instance, while also maintaining full UI functionality (i.e., I'd like to keep a boot screen, etc.). I'd also prefer something OpenCL/OpenGL compatible (whatever that means) because it'll allow me to create data viz of the climate models BOINC is running in the background. That said, if someone here is well-versed in BOINC, I'd appreciate any other tips you might have, though I'll also take this concern over to their forums. 3) Currently using an old Dell monitor. What would be the highest res screen this tower can power? Follow ups questions on my end will likely concern "how-to's" if that's something anyone wants to preemptively address in their reply IT here isn't intended for things like this, so TIA!