OCZ OCZ2P8004GK DDR2 800MHz 4GB Kit - Platinum Edition 800MHz DDR2/Unbuffered CL 5-4-4-15/(CAS-TRCD-TRP-TRAS) Platinum XTC* Heatspreader 2.1 Volts/240 Pin DIMM Available in 2GB Modules and 4GB (2x2048) Dual Channel Kits