tentative dibs on system 2you not parting out system 3 by chance? would take the board/processor/ram/psu combo.
dibs on system 2 and monitor
System 2:Intel Core i7-2600 3.4Ghz/3.8Ghz turbo Socket 1155 processor - overclocked to 4.2ghz http://ark.intel.com/products/52213Corsair H50 cpu liquid cooler http://www.corsair.com/hydro-series-h50-cpu-cooler.htmlGigabyte GA-P67A-UD7-B3 motherboard http://www.gigabyte.com/products/product-page.aspx?pid=3761#ov http://2GB x 4 sticks Super Talent Gold and Platinum series DDR3 1600MhzDual Hitachi 500GB SATA2 7200RPM hard drives RAID 0 - stripe/performanceDual MSI twin Frozr II GTX 460 1Gb graphics cards in SLiOCZ Modxstream Pro 500 watt semi modular power supply http://ocz.com/consumer/psu/modxstream-pro-500w-700w-power-supplyBlack Mid atx case - glossy finishWindows 7 x64 Home Premium installed + some games*Note1: On one video card the dual fans were replaced with 2 AMD PWM fans, works perfectly though.*$3000