Type: 240-Pin DDR2 Capacity: 4GB Speed: PC2-6400 800 MHz Voltage: 1.8V Buffering/ECC: Non-ECC Unbuffered Color: Green Material: PCB + Metal Package Contents: 4 x 4GB PC2-6400 800MHz Desktop Memory Modules Note: It is generally difficult for processors suitable for DDR2 to support 16GB and 800MHz simultaneously. Compatible only with AMD CPU motherboards; not compatible with Intel CPU motherboards. Not compatible with motherboards using G41, P43, P45, H55, H61, H67, B75, or Z77 chipsets. Not compatible with Packard Bell computers. Slight variations between batches may occur; these do not affect performance. The package includes only the items listed above; other items are not included. Note: Lighting and display settings may cause slight color differences between the product image and the actual item. Measurement error allowance is +/- 1-3 cm.