Product comparison · 2 internal solid state drives

Dynabook RD400 256 GB M.2 PCI Express 3.1 NVMe MLC vs Goodram IRDM PRO

16specifications compared
13differ
3identical
21known for one product only

Key differences

SSD capacity
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:256 GB
- IRDM PRO:240 GB
SSD form factor
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:M.2
- IRDM PRO:2.5"
Interface
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:PCI Express 3.1
- IRDM PRO:Serial ATA III
Data transfer rate
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:32 Gbit/s
- IRDM PRO:6 Gbit/s
Read speed
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:2600 MB/s
- IRDM PRO:560 MB/s
Write speed
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:1150 MB/s
- IRDM PRO:530 MB/s
Random read (4KB)
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:210000 IOPS
- IRDM PRO:100000 IOPS
Random write (4KB)
- RD400 256 GB M.2 PCI Express 3.1 NVMe MLC:140000 IOPS
- IRDM PRO:88000 IOPS

Side by side

Differences highlightedShow differences only

Comparison of RD400, IRDM PRO
37 specifications	A Dynabook RD400 256 GB M.2 PCI Express 3.1 NVMe MLC Model RD400 View product	B Goodram IRDM PRO View product
Features9 differ
SSD capacityDiffers	256 GB	240 GB
SSD form factorDiffers	M.2	2.5"
InterfaceDiffers	PCI Express 3.1	Serial ATA III
NVMeKnown for one	Yes	Unknown — not stated by the source
NVMe versionKnown for one	1.1b	Unknown — not stated by the source
Data transfer rateDiffers	32 Gbit/s	6 Gbit/s
Read speedDiffers	2600 MB/s	560 MB/s
Write speedDiffers	1150 MB/s	530 MB/s
Random read (4KB)Differs	210000 IOPS	100000 IOPS
Random write (4KB)Differs	140000 IOPS	88000 IOPS
PCI Express interface data lanesKnown for one	x4	Unknown — not stated by the source
S.M.A.R.T. supportKnown for one	Yes	Unknown — not stated by the source
TRIM supportKnown for one	Yes	Unknown — not stated by the source
Mean time between failures (MTBF)Differs	1500000 h	2000000 h
Windows operating systems supportedKnown for one	Windows 10, Windows 7, Windows 8.1	Unknown — not stated by the source
Linux operating systems supportedKnown for one	Yes	Unknown — not stated by the source
Endurance rating (for 5 years)Known for one	81 GB/day	Unknown — not stated by the source
TBW ratingKnown for one	148	Unknown — not stated by the source
SSD usage tagKnown for one	Consumer	Unknown — not stated by the source
CertificationKnown for one	UL/cUL, FCC, CE, RCM, KC, BSMI, VCCI, ISED	Unknown — not stated by the source
Uncompressed transfer rate (read)Known for one	Unknown — not stated by the source	550 MB/s
Uncompressed transfer rate (write)Known for one	Unknown — not stated by the source	520 MB/s
ECCKnown for one	Unknown — not stated by the source	Yes
Poweridentical
Operating voltageKnown for one	3.3 V	Unknown — not stated by the source
Power consumption (average)Known for one	6 W	Unknown — not stated by the source
Weight & dimensions3 differ
WidthDiffers	22 mm	100.1 mm
DepthDiffers	80 mm	69.9 mm
HeightDiffers	2.23 mm	6.85 mm
WeightKnown for one	7.2 g	Unknown — not stated by the source
Operational conditions1 differ
Storage temperature (T-T)Differs	-40 - 85 °C	-45 - 85 °C
Operating vibrationKnown for one	2.17 G	Unknown — not stated by the source
Non-operating vibrationKnown for one	3.13 G	Unknown — not stated by the source
Non-operating shockKnown for one	1000 G	Unknown — not stated by the source
Logistics dataidentical
Harmonized System (HS) codeKnown for one	84717070	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.

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