here are the specs i need
Memory
Type DDR2
Size 4096 MBytes
Channels # Dual
DRAM Frequency 399.5 MHz
CAS# Latency (CL) 5 clocks
RAS# to CAS# Delay (tRCD) 5 clocks
RAS# Precharge (tRP) 5 clocks
Cycle Time (tRAS) 18 clocks
Command Rate (CR) 2T

