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GoodRAM IRDM Pro 2.5" SSD (gen 2) 2TB vs. WD BLACK SN850 NVMe SSD M.2 1TB + 9

WD BLACK SN850 NVMe SSD M.2 1TB

WD BLACK SN850 NVMe SSD M.2 1TB

£134.89

Free delivery
WD BLACK SN850 NVMe SSD M.2 2TB

WD BLACK SN850 NVMe SSD M.2 2TB

£269.90

Free delivery
Samsung T7 Portable SSD 1TB

Samsung T7 Portable SSD 1TB

£105.00

£108.20 Incl. delivery
WD Blue SN550 M.2 2280 1TB

WD Blue SN550 M.2 2280 1TB

£68.98

Free delivery
WD BLACK SN850 NVMe SSD M.2 with Heatsink 1TB

WD BLACK SN850 NVMe SSD M.2 with Heatsink 1TB

£185.99

£220.15 Incl. delivery
Crucial MX500 2.5" 7mm 500GB

Crucial MX500 2.5" 7mm 500GB

£48.28

£51.98 Incl. delivery
WD BLACK SN850 NVMe SSD M.2 with Heatsink 2TB

WD BLACK SN850 NVMe SSD M.2 with Heatsink 2TB

£386.99

£419.98 Incl. delivery
External connection
No
No
No
No
Yes
No
No
No
No
No
Firewire
No
Thunderbolt
No
USB
Yes
Type of USB connector
USB (Type C)
USB version
3.2 (Gen 2)
Internal connection
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Connection
M.2
M.2
M.2
M.2
M.2
M.2
M.2
S-ATA
M.2
Interface
S-ATA 6Gb/s
PCIe Gen4 x4 NVMe
PCIe Gen4 x4 NVMe
PCIe Gen3 x4 NVMe
PCIe Gen4 x4 NVMe
PCIe Gen3 x4 NVMe
PCIe Gen3 x4 NVMe
PCIe Gen4 x4 NVMe
S-ATA 6Gb/s
PCIe Gen4 x4 NVMe
Dimensions (WxHxD)
Depth
69.8 mm
22 mm
80.15 mm
80 mm
80 mm
85 mm
80 mm
80 mm
80 mm
100 mm
80 mm
Height
7 mm
2.38 mm
2.38 mm
2.4 mm
2.38 mm
8 mm
2.4 mm
2.38 mm
8.8 mm
7 mm
8.8 mm
Width
100 mm
80 mm
22.15 mm
22 mm
23.4 mm
57 mm
22 mm
22 mm
23.4 mm
70 mm
23.4 mm
M.2 form factor
M.2 Type 2280
M.2 Type 2280
M.2 Type 2280
M.2 Type 2280
M.2 Type 2280
M.2 Type 2280
M.2 Type 2280
M.2 Type 2280
Product weight
7.5 g
9 g
8 g
7.5 g
58 g
8 g
6.5 g
38 g
Features
TRIM support
TRIM support, SED/FDE (disk encryption)
TRIM support, SED/FDE (disk encryption)
TRIM support
TRIM support, SED/FDE (disk encryption)
TRIM support, SED/FDE (disk encryption)
4KB random read
97000 IOPS
1000000 IOPS
1000000 IOPS
620000 IOPS
1000000 IOPS
600000 IOPS
345000 IOPS
1000000 IOPS
95000 IOPS
1000000 IOPS
4KB random write
85000 IOPS
720000 IOPS
1000000 IOPS
560000 IOPS
710000 IOPS
550000 IOPS
385000 IOPS
90000 IOPS
Cache memory
Yes
Yes
Yes
Yes
Yes
No
Yes
Cache size
1024 MB
1024 MB
2048 MB
2048 MB
1024 MB
Controller chip
Samsung S4LV003
Samsung S4LR020
Samsung S4LR020
Silicon Motion SM2258
Maximum read speed
555 MB/s
7000 MB/s
7000 MB/s
3500 MB/s
7000 MB/s
1050 MB/s
3500 MB/s
2400 MB/s
7000 MB/s
560 MB/s
7000 MB/s
Maximum write speed
535 MB/s
5300 MB/s
5000 MB/s
3300 MB/s
5100 MB/s
1000 MB/s
3300 MB/s
1950 MB/s
5300 MB/s
510 MB/s
5300 MB/s
Size
2000 GB
1000 GB
1000 GB
2000 GB
2000 GB
1000 GB
1000 GB
1000 GB
1000 GB
500 GB
2000 GB
Price/GB
0.15 £/GB
0.14 £/GB
0.14 £/GB
0.11 £/GB
0.14 £/GB
0.11 £/GB
0.11 £/GB
0.07 £/GB
0.19 £/GB
0.1 £/GB
0.19 £/GB
TBW (Terabytes written)
600
600
1200
1200
600
600
600
180
Type of flash memory
3D TLC
3D TLC
3D TLC
3D TLC
3D TLC
TLC
3D TLC
TLC
3D TLC
Manufacturer warranty
5 Years
5 Years
5 Years
5 Years
5 Years
3 Years
5 Years
5 Years
5 Years
5 Years
5 Years
Operational Power Consumption (min-max)
0.8 - 6.8 W
6.2 W
5 - 6 W
6 - 9 W
0.2 - 4.9 W
Power consumption (standby)
0.5 W
0.04 W
0.03 W
0.03 W
0.05 W