Product comparison · 2 memory modules

HyperX 256MB DDR2 675MHz vs HyperX Memory HyperX 512MB 400Mhz DDR 2Pk

8specifications compared
5differ
3identical
8known for one product only

Key differences

The HyperX 256MB DDR2 675MHz has 2 more CAS latency than the HyperX Memory HyperX 512MB 400Mhz DDR 2Pk (4 vs 2). The HyperX 256MB DDR2 675MHz has 8 bit more check width than the HyperX Memory HyperX 512MB 400Mhz DDR 2Pk (16 bit vs 8 bit). Internal memory type: DDR2 on the HyperX 256MB DDR2 675MHz, DDR on the HyperX Memory HyperX 512MB 400Mhz DDR 2Pk. Memory form factor: 240-pin DIMM on the HyperX 256MB DDR2 675MHz, 184-Pin DIMM on the HyperX Memory HyperX 512MB 400Mhz DDR 2Pk. Operating temperature (T-T): 0 - 55 °C on the HyperX 256MB DDR2 675MHz, 0 - 70 °C on the HyperX Memory HyperX 512MB 400Mhz DDR 2Pk.

Internal memory type
- HyperX 256MB DDR2 675MHz:DDR2
- Memory HyperX 512MB 400Mhz DDR 2Pk:DDR
Memory form factor
- HyperX 256MB DDR2 675MHz:240-pin DIMM
- Memory HyperX 512MB 400Mhz DDR 2Pk:184-Pin DIMM
CAS latency
- HyperX 256MB DDR2 675MHz:4
- Memory HyperX 512MB 400Mhz DDR 2Pk:2
Check width
- HyperX 256MB DDR2 675MHz:16 bit
- Memory HyperX 512MB 400Mhz DDR 2Pk:8 bit
Operating temperature (T-T)
- HyperX 256MB DDR2 675MHz:0 - 55 °C
- Memory HyperX 512MB 400Mhz DDR 2Pk:0 - 70 °C

Side by side

Differences highlightedShow differences only

Comparison of HyperX 256MB DDR2 675MHz, Memory HyperX 512MB 400Mhz DDR 2Pk
16 specifications	A HyperX HyperX 256MB DDR2 675MHz View product	B HyperX Memory HyperX 512MB 400Mhz DDR 2Pk View product
Features4 differ
Internal memory typeDiffers	DDR2	DDR
Memory form factorDiffers	240-pin DIMM	184-Pin DIMM
CAS latencyDiffers	4	2
Check widthDiffers	16 bit	8 bit
Memory clock speedKnown for one	Unknown — not stated by the source	400 MHz
Memory voltageKnown for one	Unknown — not stated by the source	2.6 V
Lead platingKnown for one	Unknown — not stated by the source	Gold
Internal memory access speedKnown for one	Unknown — not stated by the source	5 ns
Operational conditions1 differ
Operating temperature (T-T)Differs	0 - 55 °C	0 - 70 °C
Weight & dimensionsidentical
WidthKnown for one	133 mm	Unknown — not stated by the source
DepthKnown for one	2.7 mm	Unknown — not stated by the source
HeightKnown for one	30 mm	Unknown — not stated by the source
Other featuresidentical
Mac compatibilityKnown for one	No	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.

More memory module comparisons

All memory module comparisons