Check at following Merchants
Manufacturer
Form Factor
Speed
Modules
Color
First Word Latency
CAS Latency
Voltage
Timing
ECC / Registered
Heat Spreader
Compatible Products
Specifications
ManufacturerCrucial
Part #CT4G3W186DM
SpeedDDR3-1866
Form Factor240-pin DIMM (DDR3)
Modules1 x 4GB
ColorBlack / Green
First Word Latency13.934 ns
CAS Latency13
Voltage1.5 V
ECC / RegisteredECC / Unbuffered
Heat SpreaderNo