Axiom 32GB DDR2-667 ECC RDIMM Kit (4 x 8GB) for Sun # SEWX2D1Z, SEWX2D2Z-N - 32GB (4 x 8GB) - 667MHz DDR2-667/PC2-5300 - ECC - DDR2 SDRAM - 240-pin DIMM

Up to 667 MHz speed with Registered signal is enough to run heavy software smoothly while surfing web with dozens of tabs open 32 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience DDR2 SDRAM operates at up to 400 MHz data bus speed with minimal power consumption and as a result, you get optimal computer performance with an improved memory heat dissipation