Compatible With: Laptops, Desktops - PC-2700 - Bus Speed: 166 MHz - SO DIMM 200-Pin - Sku CT12864X335

4GB 240pin DDR3 DIMM 512Mx72 ECC gold leads unbuffered 1.5 volts PC3-8500 DDR3-1066 spec 1066Mhz with SPD CAS 7 latency CL7 max 1.25 inches tall

667 MHz - PC2 5300 - 200 Pin

667 HMz - 200 Pin - PC5300

PC2 6400, 800 MHz - 240 Pin DIMM

Compatible With: Desktops - PC-3200 - Bus Speed: 400 MHz - DIMM 184-Pin - Non-ECC - Unbuffered - Sku KVR400X64C3A1G

This 4GB memory kit contains two 2GB memory modules designed to enhance your system's performance.

Memory Speed: 400 MHz - 184 Pin - CAS Latency: 3

Memory Speed: 800 MHz - DIMM 240 Pin - Unbuffered - Titanium XTC Heatspreader