For sale is one AMD Athlon II X4 640 ADX640WFK42GR AM3 3GHz Quad Core processor in 100% working condition, all functions tested. This processor is based on the E0 stepping Zosma core which can be unlocked to a Phenom II X6 with L3 cache, when used with a compatible unlocking motherboard.Shipping will be via USPS Ground Advantage. Feel free to ask any questions. This processor is guaranteed to fit your needs and is covered by a 30-day free return policy. If you aren\'t completely satisfied, please select the reason \"doesn\'t fit\" while opening the return, and you\'ll receive a free return shipping label. Please avoid selecting the \"doesn\'t work or defective\" reason, as this results in a penalty fee for the seller.