Product comparison · 2 internal solid state drives

Samsung PM951 128 GB M.2 PCI Express 3.0 vs Samsung PM953 480 GB 2.5" PCI Express TLC

Key differences

SSD capacity
- PM951 128 GB M.2 PCI Express 3.0:128 GB
- PM953 480 GB 2.5" PCI Express TLC:480 GB
SSD form factor
- PM951 128 GB M.2 PCI Express 3.0:M.2
- PM953 480 GB 2.5" PCI Express TLC:2.5"
Interface
- PM951 128 GB M.2 PCI Express 3.0:PCI Express 3.0
- PM953 480 GB 2.5" PCI Express TLC:PCI Express
Read speed
- PM951 128 GB M.2 PCI Express 3.0:600 MB/s
- PM953 480 GB 2.5" PCI Express TLC:1000 MB/s
Write speed
- PM951 128 GB M.2 PCI Express 3.0:150 MB/s
- PM953 480 GB 2.5" PCI Express TLC:500 MB/s

Differences highlightedShow differences only

Comparison of PM951, PM953
14 specifications	A Samsung PM951 128 GB M.2 PCI Express 3.0 Model PM951 View product	B Samsung PM953 480 GB 2.5" PCI Express TLC Model PM953 View product
Features5 differ
SSD capacityDiffers	128 GB	480 GB
SSD form factorDiffers	M.2	2.5"
InterfaceDiffers	PCI Express 3.0	PCI Express
Read speedDiffers	600 MB/s	1000 MB/s
Write speedDiffers	150 MB/s	500 MB/s
Memory typeKnown for one	Unknown — not stated by the source	TLC
Random read (4KB)Known for one	Unknown — not stated by the source	240000 IOPS
Random write (4KB)Known for one	Unknown — not stated by the source	16000 IOPS
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 70 °C	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating shockKnown for one	1500 G	Unknown — not stated by the source
Other featuresidentical
Product colourKnown for one	Green	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.