Designed to comply with industry standards and built with quality components. SuperTalent desktop memory offers guaranteed compatibility. This memory is ideal for system integrators and for upgrades. Fully JEDEC compliant DDR & DDR2 DIMMs 100% Software and Hardware Tested to ensure quality Optional Aluminum heat spreaders Available with or without ECC Single modules: 256MB, 512MB & 1GB capacities Matched pairs tested on Dual Channel motherboards: 512MB, 1GB & 2GB kits Unbuffered DDR Unbuffered DDR2