Patriot Memory PSD28G800K DDR2 8GB (2 x 4GB) PC2-6400 (800MHz) DIMM Kit - SDRAM - 800 MHz DDR2-800/PC2-6400 - 1.80 V - Non-ECC - Unbuffered - 240-pin - DIMM (Patriot Memory PSD28G800K) Patriot Memory PSD28G800K DDR2 8GB (2 x 4GB) PC2-6400 (800MHz) DIMM Kit - SDRAM - 800 MHz DDR2-800/PC2-6400 - 1.80 V - Non-ECC - Unbuffered - 240-pin - DIMM Patriot Memory PSD28G800K