Product comparison · 2 memory modules

Kingston Technology 16GB(4 x 4GB), 1066MHz, DDR3, ECC vs Kingston Technology 4GB, 1066MHz, DDR3, ECC w/ thermal sensor

Key differences

Internal memory
- 16GB(4 x 4GB), 1066MHz, DDR3, ECC:16 GB
- 4GB, 1066MHz, DDR3, ECC w/ thermal sensor:4 GB
Memory layout (modules x size)
- 16GB(4 x 4GB), 1066MHz, DDR3, ECC:4 x 4 GB
- 4GB, 1066MHz, DDR3, ECC w/ thermal sensor:1 x 4 GB
Internal memory
- 16GB(4 x 4GB), 1066MHz, DDR3, ECC:16384 MB
- 4GB, 1066MHz, DDR3, ECC w/ thermal sensor:4096 MB
Memory layout
- 16GB(4 x 4GB), 1066MHz, DDR3, ECC:4 x 4096 MB
- 4GB, 1066MHz, DDR3, ECC w/ thermal sensor:1 x 4096 MB

Differences highlightedShow differences only

Comparison of 16GB(4 x 4GB), 1066MHz, DDR3, ECC, 4GB, 1066MHz, DDR3, ECC w/ thermal sensor
20 specifications	A Kingston Technology 16GB(4 x 4GB), 1066MHz, DDR3, ECC View product	B Kingston Technology 4GB, 1066MHz, DDR3, ECC w/ thermal sensor View product
Features2 differ
Internal memoryDiffers	16 GB	4 GB
Memory layout (modules x size)Differs	4 x 4 GB	1 x 4 GB
Internal memory type	DDR3	DDR3
Memory form factor	240-pin DIMM	240-pin DIMM
ECC	Yes	Yes
CAS latency	7	7
Memory bus	72 bit	72 bit
Buffered memory type	Unregistered (unbuffered)	Unregistered (unbuffered)
Memory rankingKnown for one	Unknown — not stated by the source	2
Memory voltage	1.5 V	1.5 V
Module configuration	512M X 72	512M X 72
Memory type	DDR3	DDR3
Lead plating	Gold	Gold
Other features2 differ
Chips organisation	X8	X8
CompatibilityKnown for one	Unknown — not stated by the source	333-0880 (Apple); MB982G/A (Apple)
Bus clock rate	1066 MHz	1066 MHz
Error indication	ECC	ECC
Form factor	240-pin DIMM	240-pin DIMM
Internal memoryDiffers	16384 MB	4096 MB
Memory layoutDiffers	4 x 4096 MB	1 x 4096 MB

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.