Product comparison · 2 memory modules

Kingston Technology 512MB 333MHz DDR Non-ECC CL2.5 DIMM vs Kingston Technology Memory 256MB 100MHz ECC Registered CL2 DIMM

Key differences

Internal memory
- 512MB 333MHz DDR Non-ECC CL2.5 DIMM:0.5 GB
- Memory 256MB 100MHz ECC Registered CL2 DIMM:0.25 GB
Memory form factor
- 512MB 333MHz DDR Non-ECC CL2.5 DIMM:184-pin DIMM
- Memory 256MB 100MHz ECC Registered CL2 DIMM:168-pin DIMM
CAS latency
- 512MB 333MHz DDR Non-ECC CL2.5 DIMM:2.5
- Memory 256MB 100MHz ECC Registered CL2 DIMM:2
Memory bus
- 512MB 333MHz DDR Non-ECC CL2.5 DIMM:64 bit
- Memory 256MB 100MHz ECC Registered CL2 DIMM:72 bit
Memory voltage
- 512MB 333MHz DDR Non-ECC CL2.5 DIMM:2.5 V
- Memory 256MB 100MHz ECC Registered CL2 DIMM:3.3 V

Differences highlightedShow differences only

Comparison of 512MB 333MHz DDR Non-ECC CL2.5 DIMM, Memory 256MB 100MHz ECC Registered CL2 DIMM
17 specifications	A Kingston Technology 512MB 333MHz DDR Non-ECC CL2.5 DIMM View product	B Kingston Technology Memory 256MB 100MHz ECC Registered CL2 DIMM View product
Features5 differ
Internal memoryDiffers	0.5 GB	0.25 GB
Memory layout (modules x size)Known for one	1 x 0.5 GB	Unknown — not stated by the source
Internal memory typeKnown for one	DDR	Unknown — not stated by the source
Memory form factorDiffers	184-pin DIMM	168-pin DIMM
CAS latencyDiffers	2.5	2
Memory busDiffers	64 bit	72 bit
Buffered memory typeKnown for one	Unregistered (unbuffered)	Unknown — not stated by the source
Memory voltageDiffers	2.5 V	3.3 V
Row cycle timeKnown for one	60 ns	Unknown — not stated by the source
Refresh row cycle timeKnown for one	72 ns	Unknown — not stated by the source
Row active timeKnown for one	42 ns	Unknown — not stated by the source
Lead plating	Gold	Gold
ECCKnown for one	Unknown — not stated by the source	Yes
Check widthKnown for one	Unknown — not stated by the source	8 bit
Internal memory access speedKnown for one	Unknown — not stated by the source	10 ns
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	10 - 50 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	10 - 90%

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.