Product comparison · 2 internal solid state drives

HP 741159-B21#0D1 vs HP 756621-B21#0D1

Key differences

Differences highlightedShow differences only

Comparison of 741159-B21#0D1, 756621-B21#0D1
15 specifications	A HP 741159-B21#0D1 Model 741159-B21#0D1 View product	B HP 756621-B21#0D1 Model 756621-B21#0D1 View product
Features3 differ
SSD capacityDiffers	800 GB	120 GB
SSD form factor	2.5"	2.5"
InterfaceDiffers	SAS	Serial ATA III
Data transfer rateDiffers	12 Gbit/s	6 Gbit/s
Read speedKnown for one	Unknown — not stated by the source	470 MB/s
Write speedKnown for one	Unknown — not stated by the source	310 MB/s
Random read (4KB)Known for one	Unknown — not stated by the source	60000 IOPS
Random write (4KB)Known for one	Unknown — not stated by the source	10200 IOPS
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Security algorithmsKnown for one	Not supported	Unknown — not stated by the source
Poweridentical
Power consumption (read)Known for one	Unknown — not stated by the source	9 W
Power consumption (write)Known for one	Unknown — not stated by the source	9 W
Weight & dimensionsidentical
HeightKnown for one	Unknown — not stated by the source	15 mm
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	0 - 60 °C
Other featuresidentical
Internal	Yes	Yes

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.