当店はPCパーツを販売する専門ショップです。■CPUとご搭載いただくマザボードの相性についてご不安のある方は、ご落札前に事前に質問にてお問い合わせください。■当商品はES品ではなく正規品です。The AMD Athlon II X4 638 was a desktop processor with 4 cores launched in February 2012.It is part of the Athlon II X4 lineup using the Llano architecture with Socket FM1.Athlon II X4 638 has 1MB of L2 cache and operates at 2.7 GHz.AMD is making the Athlon II X4 638 on a 32 nm production node using 1178 million transistors.The silicon die of the chip is not fabricated at AMD but at the foundry of GlobalFoundries.The multiplier is locked on Athlon II X4 638 which limits its overclocking potential.With a TDP of 65 W the Athlon II X4 638 consumes typical power levels for a modern PC.AMD's processor supports DDR3 memory with adual-channel interface.The highest officially supported memory speed is 1866 MHz but with overclocking (and the right memory modules) you can go even higher.For communication with other components in the computer Athlon II X4 638 uses a PCI-Express Gen 2 connection.This processor does not have integrated graphics you will need a separate graphics card.