Unloading my dual CPU rig. Before dismantling the dual XEON rig, I ran CPU-Z and used validate button in the name 4GHz: http://valid.canardpc.com/g6hw9i Stock speed with speedstep disabled. (with speedstep it'd be 1.6GHz idle) I originally got this used almost 3 years ago and I did have them running stable at a hair over 4GHz for SETI@Home but I dropped them to stock speed for most of the past year to cut down on electricity usage. It was just expensive to keep it running at full power and overclocked when most of the time I play games that can only use at most 4% of total CPU power. A few weeks ago after checking, I've decided to dismantle this and put together a smaller, less power-hungry machine for gaming. http://www.flickr.com/photos/lego_otaku/12182364463/sizes/o/ motherboard with 2 CPU waterblocks and chipset waterblocks still installed. http://www.flickr.com/photos/lego_otaku/12182328943/sizes/o/ http://www.flickr.com/photos/lego_otaku/12182076625/sizes/o/ CPU 1 and CPU 2 closeup, I hope the text on the CPU is legible http://www.flickr.com/photos/lego_otaku/12182221395/sizes/l/ backplate for the mobo, 2 sets of LEDs to light up CPU water blocks, and Windows 7 install CD- retail. 2 reasons it's included in this sale post: Pro is the minimum of any for Windows 7 that supports 2 physical CPU, it's tied to this mobo/CPUs serial, and I don't want to harass Microsoft to switch it. I already have other legal copy of Windows 7 for my other computer anyway so this blue box goes with this mobo. http://www.flickr.com/photos/lego_otaku/12182077365/sizes/o/ took this a while ago to show how the CPU block lights up using long shutter speed. http://www.flickr.com/photos/lego_otaku/12182201395/sizes/l/ http://www.flickr.com/photos/lego_otaku/12182172165/sizes/l/ dual bay reservoir, Koolance RP-452x2 with 2 pumps and a loop kit installed. Original V1.0 One screw got a bit rusted when I spilled water and didn't clean it right away, the outside screws aren't water proofed I can take MORE pictures!! With or without my note to prove ownership, just ask! I however will not do a selfie while wearing only grass skirt and pair of coconut shells on my chest My heat http://www.heatware.com/eval.php?id=41806 I prefer to sell this in a set: Will sell it separate now Motherboard EVGA SR-2 with IO back plate (average eBay used price $250) SOLD to KKiller 2x Intel XEON X5650 (average eBay used price $130 each) BOTH SOLD 2x EK Supreme HF waterblocks with red top: http://www.ekwb.com/shop/top-plexi-supreme-hf-red.html plus 2 sets LEDs to fan plug included to light up the red top (average eBay price used for non clear or colored top $30 each) HOLD PENDING PM EK FB SR2 chipset waterblock (could not find on eBay, was 225 new, paid 175 when I got mine, will sell at 100) original EVGA SR-2 chipset heat sink. (not pictured, belongs to mobo) SOLD with mobo EVGA branded tri and quad SLi bridges (not pictured, originally came with mobo) SOLD with mobo And Windows 7 Pro- retail version. (Average price new $200, eBay doesn't seem to allow used Windows) Bundle: $800 OBO (discount for NOT paying eBay those ridiculous fees!) I originally paid over $2000 for all of the above. The chipset waterblock was bought second hand for 175 as they were already hard to find 3 years ago, the previous owner was missing a small block that goes onto the mosfet for CPU1 (front most CPU) so I used stock heat fins. It should be fine unless you're planning on extreme overclocking without good air flow. EVGA SR-2 had a quirk I wasn't able to solve. If I used 2 video cards separate to drive monitors, I sometimes got BSoD 0x00000125 but if I raised NForce vcore, if I added SLi bridge and enabled it, or if I disabled one of the video card the error never came up. The error code seems to point to CPU problem but I have already swapped them and ran stress test with only 1 video card, no error came up. I don't know if it's the motherboard, the CPU, or the video card. I did plug in extra PCIe power and extra MOSFET power to rule that out. So bear in mind if you see x0125 error and have 2 or more video cards. It will need new thermal grease on chipset, MOSFETs, and CPUs before you use them as the old one is close to 3 years now. The water blocks could use some flushing just in case, I did use biocide and distilled water, no other additives. No other accessories are included. I have a box somewhere with instruction books, original CPU backplate, etc for the motherboard but I've misplaced it. Koolance RP-452x2 1.0 with U-connector. I lost the original plastic piece so it can't be converted back to 2 separate pump sets. Has 2 mcp655 (non-vario) pumps, both are 3-4 years old and should be replaced soon. Asking $150 OBO for reservoir and 2 pumps. HOLD PENDING PM I'll get more after I get some sleep, I need to take pictures first. Radiators, water hose fittings, and power supply so check back. Paypal accepted, CC OK Ships from Michigan, USA. Can meet locally to save on shipping. The motherboard will not fit any flat rate boxes so it will not be cheap to ship, maybe $30-ish or so within conus? Oversea shipping is probably not permitted because of Windows 7 restriction, I'd have to check on it.