Product comparison · 2 memory modules

Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2) vs Kingston Technology 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4

11specifications compared
8differ
3identical
1known for one product only

Key differences

The Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2) has 2 more CAS latency than the Kingston Technology 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 (7 vs 5). The Kingston Technology 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 has 8 bit more memory bus than the Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2) (72 bit vs 64 bit). Only the Kingston Technology 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 has ECC. Memory layout (modules x size): 2 x 2 GB on the Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2), 1 x 4 GB on the Kingston Technology 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4. Internal memory type: DDR3 on the Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2), DDR2 on the Kingston Technology 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4.

Memory layout (modules x size)
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):2 x 2 GB
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:1 x 4 GB
Internal memory type
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):DDR3
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:DDR2
ECC
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):No
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:Yes
CAS latency
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):7
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:5
Memory bus
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):64 bit
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:72 bit
Buffered memory type
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):Unregistered (unbuffered)
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:Registered (buffered)
Module configuration
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):256M X 64
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:512M X 72
Memory type
- 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2):DDR3
- 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4:DDR2

Side by side

Differences highlightedShow differences only

Comparison of 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2), 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4
12 specifications	A Kingston Technology 4GB 1066MHz DDR3 Non-ECC CL7 DIMM (Kit of 2)View product	B Kingston Technology 4GB 800MHz DDR2 ECC Fully Buffered CL5 DIMM Dual Rank, x4 View product
Features8 differ
Memory layout (modules x size)Differs	2 x 2 GB	1 x 4 GB
Internal memory typeDiffers	DDR3	DDR2
ECCDiffers	No	Yes
CAS latencyDiffers	7	5
Memory busDiffers	64 bit	72 bit
Buffered memory typeDiffers	Unregistered (unbuffered)	Registered (buffered)
Memory voltageKnown for one	Unknown — not stated by the source	1.8 V
Module configurationDiffers	256M X 64	512M X 72
Memory typeDiffers	DDR3	DDR2

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.

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