CORSAIR XMS2 1GB PC2-5400 675MHz 240-pin DDR2 Dual Channel Desktop Memory 1024 Megabytes of memory in a 240-pn DDR2 DIMM Implemented using 32M x 8 DDR2 SDRAMs 100% tested at 667MHz in high performance DDR2 motherboards Legendary Corsair reliability and service Lifetime Warranty