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Amazon.com: HP Z230 Workstation Intel Xeon E3-1225 v.3@3.2GHz, 500GB HDD, 4GB DDR3, Windows 7 Desktop (Renewed) : Electronics
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Installed Windows 7 build 6931 on actual hardware with Quad-Core Intel Xeon CPU. It runs excellent. : r/windowsbetas
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Refurbished: HP Z400 Workstation - Quad Core Intel Xeon 3.2Ghz W3565 - 8GB DDR3 - 1TB SATA Hard Drive - Windows 7 Professional x64 - Newegg.com
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Windows 7 running on a 2007 workstation with two Intel Xeon E5450 CPUs... basically a dual Core 2 Quad system : r/windows7
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