Check at following Merchants
Speed
Modules
First Word Latency
Voltage
Compatible Products
Specifications
ManufacturerG.Skill
Part #F3-14400CL9D-4GBFLS
SpeedDDR3-1800
Form Factor240-pin DIMM (DDR3)
Modules2 x 2GB
ColorBlack / Red
First Word Latency10 ns
CAS Latency9
Voltage1.65 V
ECC / RegisteredNon-ECC / Unbuffered
Heat SpreaderYes