I have 5 of these things and the wife wants a "reading nook" vs. a corner of the apartment stacked with mini-fridge sized PCs. I will be selling two machines that come out of warranty within 90-days. They are currently configured each with dual Xeon x5460 (quad-core 3.16ghz) CPUs, 16GB DDR2 ECC RAM and WD Raptor 10K RPM 80GB HDD in RAID0+1 (160gb hdd space) or WD Raptor 36GB 10K RPM HDD in RAID0+1 . Windows 7 Professional + Office 2007 optional - each came from Dell with Vista Business 32/64 or XP Pro. Machines will come with COA sticker and reinstall media - if you want W7x64 Pro that will be a one-time fresh install. I'm happy to give you the ISO of the media however the COA key is mine (MSFT volume license single key so I can't give out) - the RAID should prevent the OS loss and need to reinstall in the future + WD has a great (free) HDD image software you can use to backup the fresh install of an OS. I also have two others that are 4GB RAM and only single CPU but they are the X5482 (3.2ghz quad core) CPU which is faster. Local pickup in NYC would be ideal but I'm willing to ship. I know what I can get for them in parts value ($200 mobo, $400 CPUs, $100 RAM, $100 HDD and probably another $200 in misc parts (chassis + fans + cables, etc.). Will not let them go for less than I can part them out for. Depending on what CPU config + OS & software + video cards I'm looking for between $1k-$1,500 per machine. Dell has replaced the motherboards with NEW OEM motherboard as warranty replacement on each of the machines I'm selling. The motherboards were replaced with NEW parts, not used/refurb and this was within the last 6 months so essentially brand new motherboards on both machines. If you want them as-is please let me know. If not I'm going to put a single X5450 (3.0ghz quad) CPU in them + 4GB RAM and throw them up on eBay.