HyperX 8GB DDR3 1333MHz Kit vs Kingston Technology 8GB 667MHz DDR2 ECC KIT

Comparison of 8GB DDR3 1333MHz Kit, 8GB 667MHz DDR2 ECC KIT

14 specifications	A HyperX 8GB DDR3 1333MHz KitView product	B Kingston Technology 8GB 667MHz DDR2 ECC KITView product
Features1 differ
Internal memory	8 GB	8 GB
Memory layout (modules x size)	4 x 2 GB	4 x 2 GB
Internal memory typeDiffers	DDR3	DDR2
Memory form factor	240-pin DIMM	240-pin DIMM
Memory clock speedKnown for one	1333 MHz	—Unknown — not stated by the source
Row cycle timeKnown for one	49.5 ns	—Unknown — not stated by the source
Refresh row cycle timeKnown for one	110 ns	—Unknown — not stated by the source
Row active timeKnown for one	36 ns	—Unknown — not stated by the source
ECCKnown for one	—Unknown — not stated by the source	Yes
Memory busKnown for one	—Unknown — not stated by the source	72 bit
Buffered memory typeKnown for one	—Unknown — not stated by the source	Registered (buffered)
Memory typeKnown for one	—Unknown — not stated by the source	DDR2
Lead platingKnown for one	—Unknown — not stated by the source	Gold
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 85 °C	—Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.