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HGST Deskstar 7K400 HDS724040KLSA80 8MB 400GB vs. WD Red WD40EFRX 64MB 4TB + 8

WD Red WD40EFRX 64MB 4TB

WD Red WD40EFRX 64MB 4TB

4.1

£89.95

Free delivery
WD Red WD30EFRX 64MB 3TB

WD Red WD30EFRX 64MB 3TB

4.3

£74.95

Free delivery
Seagate IronWolf ST4000VN008 64MB 4TB

Seagate IronWolf ST4000VN008 64MB 4TB

4

£93.76

£94.80 Incl. delivery
Seagate Barracuda 7200.12 ST2000DM008 256MB 2TB

Seagate Barracuda 7200.12 ST2000DM008 256MB 2TB

3.6

£44.99

£49.23 Incl. delivery
Seagate Firecuda ST2000LX001 128MB 2TB

Seagate Firecuda ST2000LX001 128MB 2TB

4

£70.89

£75.59 Incl. delivery
WD Blue WD40EZRZ 64MB 4TB

WD Blue WD40EZRZ 64MB 4TB

3.3

£72.98

£76.47 Incl. delivery
Toshiba P300 HDWD130UZSVA 64MB 3TB

Toshiba P300 HDWD130UZSVA 64MB 3TB

3.4

£58.99

£63.47 Incl. delivery
Noise level
31 - 35 dB
23 - 27 dB
23 - 24 dB
22 - 27 dB
23 - 26 dB
26 - 28 dB
22 - 26 dB
23 - 26 dB
25 - 28 dB
27 - 28 dB
Connection
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
S-ATA
Interface
S-ATA 1.5Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
S-ATA 6Gb/s
Dimensions (WxHxD)
Depth
147 mm
147 mm
147 mm
146.99 mm
146.99 mm
146.99 mm
100.35 mm
140 mm
147 mm
147 mm
Height
26.1 mm
26.1 mm
26.1 mm
20.17 mm
26.11 mm
20.2 mm
7 mm
26 mm
26.1 mm
26.1 mm
Width
101.6 mm
101.6 mm
101.6 mm
101.6 mm
101.85 mm
101.85 mm
69.85 mm
101.85 mm
101.6 mm
101.6 mm
Form factor
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
3.5 inches
2.5 inches
3.5 inches
3.5 inches
3.5 inches
Features
ERC (Error Recovery Control), NAS-optimized
ERC (Error Recovery Control), NAS-optimized
ERC (Error Recovery Control), NAS-optimized
NAS-optimized
NAS-optimized
Cache size
8 MB
64 MB
64 MB
256 MB
64 MB
256 MB
128 MB
64 MB
64 MB
64 MB
Hybrid disk (SSHD)
No
No
No
No
No
No
Yes
No
No
No
Recording technology
CMR
CMR
SMR
CMR
SMR
SMR
CMR
Release year
2013
2012
2017
2016
2017
2016
2016
2015
2017
Operational Power Consumption (min-max)
3.3 - 4.5 W
2.7 - 4.1 W
0.25 - 3.7 W
3.95 - 4.8 W
3.9 - 5.1 W
0.5 - 1.8 W
7.6 - 8.8 W
3.4 - 5.3 W
6.4 W
Power consumption (standby)
0.4 W
0.4 W
0.25 W
0.5 W
0.3 W
0.13 W
0.5 W
0.4 W
5.2 W
Advanced Format (AF)
512e
512e
512e
4Kn
4Kn
512e
512e
Internal transfer rate
95 MB/s
150 MB/s
147 MB/s
190 MB/s
263.38 MB/s
220 MB/s
140 MB/s
190 MB/s
150 MB/s
Mean Time Between Failure (MTBF)
1000000 h
1000000 h
1000000 h
1000000 h
1000000 h
1000000 h
Number of disks (platters)
5 ​
4 ​
3 ​
2 ​
3 ​
1 ​
2 ​
3 ​
4 ​
3 ​
Rotational speed
7200 RPM
5400 RPM
5400 RPM
5400 RPM
5900 RPM
7200 RPM
5400 RPM
5900 RPM
5400 RPM
7200 RPM
Storage capacity
0.4 TB
4 TB
3 TB
4 TB
4 TB
2 TB
2 TB
4 TB
4 TB
3 TB
Price/TB
75 £/TB
22.5 £/TB
25 £/TB
19 £/TB
23.5 £/TB
22.5 £/TB
35.5 £/TB
20.5 £/TB
18.25 £/TB
19.67 £/TB
Unrecoverable Read Error (URE)
1 per 10^14
1 per 10^14
1 per 10^14
1 per 10^14
1 per 10^15
1 per 10^14
1 per 10^14
1 per 10^14
1 per 10^14