PNY OPTIMA 2GB (2x1GB) Dual Channel Kit DDR2 667 MHz PC2-5300 Desktop DIMM Memory Modules MD2048KD2-667<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Memory capacity upgrade provides improved system performance and responsiveness</li><li>Deliver all the productivity your PC has to offer with PNY Memory</li><li>Compatible with PC2-5300 (667 MHz)， PC2-4200 (533 MHz)， and PC2-3200 (400 MHz) systems</li><li>Helps prepare your PC for running Windows Vista</li><li>Easy installation， Free 24-hour Technical Support， and Lifetime Warranty!</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51ZauK5ejPL.jpg" noproxy>