For sale is one Intel Pentium Extreme Edition 840 SL8FK processor in 100% working condition, all functions tested in a compatible motherboard with Windows 10. This processor comes with an unlocked multiplier, 800MHz FSB, 2MB L2 Cache, 64 bit EM64T instructions, Hyper-Threading and XD bit, based on two A0 stepping 90nm Smithfield cores clocked at 3.2GHz. The Pentium Extreme Edition 840 is ideal for Windows XP and Vista-era high-end systems such as the Dell XPS, with its two cores and four threads. Shipping will be via USPS Priority Mail. Feel free to ask any questions.