Seagate Momentus 7200.4 ST9500420AS (500 GB)

vs Comparable 2.5" SATA Hard Disks
Item 1541: Seagate Momentus 7200.4 500GB ST9500420AS
BrandSeagate
FamilyMomentus 7200.4
PartST9500420AS
Size500 GB
Cache16 MB
RPM7200
Form Factor2.5"
InterfaceSATA
Speed3 Gb/s
ST9500420AS Reviews6 (avg: 4.5/5)
Disk Interface RPM Cache (MB) Size (GB) Warranty Years Best Price Vendor Value (GB/$)
Hitachi Travelstar 5K1000 0J22413 SATA 6 Gb/s 5400 8 1000 44.00 22.73
Toshiba PH2100U-1I54 SATA 6 Gb/s 5400 8 1000 46.45 21.53
Samsung Spinpoint M8 ST1000LM024 SATA 3 Gb/s 5400 8 1000 50.25 19.90
Western Digital Blue WD10JPVX SATA 6 Gb/s 5400 8 1000 2 52.45 19.07
Hitachi Travelstar 5K1000 HTS541010A9E680 SATA 6 Gb/s 5400 8 1000 56.30 17.76
Western Digital Scorpio Blue WD10JPVT SATA 3 Gb/s 5400 8 1000 2 57.45 17.41
Western Digital Blue WD10SPCX SATA 6 Gb/s 5400 16 1000 2 59.62 16.77
Toshiba MQ01ABD100 SATA 3 Gb/s 5400 8 1000 59.99 16.67
Western Digital Blue WD7500BPVX SATA 6 Gb/s 5400 8 750 2 49.00 15.31
Western Digital WDBMYH0010BNC-NRSN SATA 3 Gb/s 5400 8 1000 66.18 15.11
Western Digital Red WD10JFCX SATA 6 Gb/s 16 1000 3 69.81 14.32
Western Digital Scorpio Blue WD7500BPVT SATA 3 Gb/s 5400 8 750 3 54.00 13.89
Hitachi 0J11563 SATA 3 Gb/s 5400 8 750 3 55.00 13.64
Western Digital Blue WD7500LPCX SATA 6 Gb/s 5400 16 750 2 55.98 13.40
Western Digital Scorpio Blue WD6400BPVT SATA 3 Gb/s 5400 8 640 3 48.99 13.06
Western Digital Blue WD5000LPVX SATA 6 Gb/s 5400 8 500 2 39.49 12.66
Toshiba MQ01ABD050 SATA 3 Gb/s 5400 8 500 40.85 12.24
Western Digital Scorpio Blue WD6400BEVT SATA 3 Gb/s 5400 8 640 3 52.50 12.19
Western Digital Black WD7500BPKX SATA 6 Gb/s 7200 16 750 5 61.99 12.10
Western Digital Red WD7500BFCX SATA 6 Gb/s 16 750 3 62.01 12.09
Hitachi 0J11562 SATA 3 Gb/s 5400 8 640 3 53.00 12.08
Samsung Spinpoint M7 HM500JI SATA 3 Gb/s 5400 8 500 42.91 11.65
Seagate ST500LM021 SATA 6 Gb/s 7200 32 500 43.11 11.60
Western Digital Scorpio Blue WD5000LPVT SATA 3 Gb/s 5400 8 500 2 43.90 11.39
Western Digital Scorpio Blue WD5000BPVT SATA 3 Gb/s 5400 8 500 3 43.99 11.37
Toshiba MQ01ABF050 SATA 6 Gb/s 5400 8 500 44.49 11.24
Samsung Spinpoint M8 HN-M500MBB SATA 3 Gb/s 8 500 44.99 11.11
Western Digital Scorpio Blue WD7500KPVT SATA 3 Gb/s 5200 8 750 3 68.68 10.92
Western Digital Scorpio Blue WD5000BEVT SATA 3 Gb/s 5400 8 500 3 47.00 10.64
Hitachi Travelstar Z7K500 HTS725050A7E630 SATA 6 Gb/s 7200 32 500 49.89 10.02
Hitachi Travelstar Z5K500 HTS545050A7E380 (0J11285) SATA 3 Gb/s 5400 8 500 49.99 10.00
Hitachi 0J11561 SATA 3 Gb/s 5400 8 500 3 51.00 9.80
Toshiba MK6459GSX SATA 5400 650 3 69.00 9.42
Western Digital Laptop Mainstream WDBMYH5000ANC SATA 3 Gb/s 5400 8 500 54.99 9.09
Seagate Momentus 7200.4 ST9500423AS SATA 3 Gb/s 7200 16 500 54.99 9.09
Seagate Momentus 7200.4 ST9500420AS SATA 3 Gb/s 7200 16 500 55.00 9.09
Seagate Momentus 5400.6 ST9500325AS SATA 3 Gb/s 5400 8 500 55.14 9.07
Samsung HN-M101MBB SATA 3 Gb/s 8 500 55.90 8.94
Seagate Momentus ST905003N1A1AS-RK SATA 3 Gb/s 5400 8 500 55.99 8.93
Seagate ST500LM000 SATA 6 Gb/s 64 500 57.90 8.64
Western Digital Black WD5000BPKX SATA 6 Gb/s 7200 16 500 5 58.50 8.55
Hitachi Travelstar 0S02858 SATA 3 Gb/s 7200 500 58.99 8.48
Toshiba PH2050U-1I54 SATA 6 Gb/s 5400 8 500 60.39 8.28
Seagate Momentus 7200.4 ST9500420ASG SATA 3 Gb/s 7200 16 500 64.50 7.75
Western Digital Scorpio Black WD5000BPKT SATA 3 Gb/s 7200 16 500 5 64.98 7.69
Western Digital WDBMYH5000ANC-NRSN SATA 3 Gb/s 5400 8 500 64.99 7.69
Hitachi Travelstar 7K500 HTS725032A9A364 SATA 3 Gb/s 7200 16 500 3 68.00 7.35
Seagate Momentus XT ST95005620AS SATA 3 Gb/s 7200 32 500 74.76 6.69
Hitachi Travelstar 7K500 HTS725050A9A364 SATA 3 Gb/s 7200 16 500 3 78.95 6.33
HP Midline 507750-B21 SATA 3 Gb/s 7200 500 79.71 6.27
Seagate Constellation ST9500530NS SATA 3 Gb/s 7200 32 500 5 83.49 5.99
Western Digital Product Line:AV-25 WD5000LUCT SATA 3 Gb/s 5400 16 500 89.11 5.61
Toshiba MK5059GSX SATA 500 3 95.00 5.26
Hitachi Travelstar 7K750 0J12281 SATA 3 Gb/s 7200 16 500 96.54 5.18
Seagate Momentus ST905003N3A1AS-RK SATA 3 Gb/s 7200 16 500 109.99 4.55
Seagate Constellation.2 ST9500620NS SATA 6 Gb/s 7200 64 500 113.15 4.42
Hitachi Travelstar H2IK500854SP SATA 3 Gb/s 5400 500 132.59 3.77
Hitachi 0Y30055 SATA 3 Gb/s 5400 8 500 3 147.38 3.39
Seagate Constellation.2 ST9500621NS SATA 6 Gb/s 7200 64 500 148.23 3.37
Western Digital Product Line:VelociRaptor WD5000BHTZ SATA 6 Gb/s 10000 64 500 5 155.71 3.21
Lenovo ThinkPad 43N3423 SATA 3 Gb/s 7200 16 500 165.00 3.03
Western Digital Scorpio Black WD5000BEKT SATA 3 Gb/s 7200 16 500 5 199.00 2.51
Seagate Constellation.2 ST9500622NS SATA 6 Gb/s 7200 64 500 377.85 1.32
IBM 42D0752 SATA 7200 500 416.00 1.20
Samsung Spinpoint M7E HM501II SATA 3 Gb/s 5400 8 500 577.99 0.87
Western Digital AV WD3200BVVT SATA 3 Gb/s 5400 8 0 3 53.00 0.00
Seagate Momentus Thin ST500LT012 SATA 1.5 Gb/s 5400 16 0 40.90 0.00
Toshiba MK1661GSYB SATA 3 Gb/s 7200 16 0 3 37.99 0.00
Hitachi Travelstar HTS725025A9A364 SATA 3 Gb/s 7200 16 0 48.90 0.00
Toshiba MQ01ABF050H SATA 6 Gb/s 5400 32 500GB/SLC 8GB 59.99 0.00

Price History

Recent Price Changes

2015-05-20 $55.00 +5.01
2015-05-20 $49.99 -5.01
2015-05-16 $55.00 +4.00
2015-05-16 $51.00 -4.00
2015-04-29 $55.00 -5.00
2015-04-25 $60.00 +10.01
2015-04-25 $49.99 -10.01
2015-04-24 $60.00 +10.01
2015-04-24 $49.99 +1.00
2015-04-24 $48.99 -11.01

Manufacturer's Specs

General
InterfaceSATA 3.0Gb/s
Guaranteed Sectors976,773,168
Cache16 MBytes
Capacity500 GB
Areal density (avg)394 Gbits/inch2
Performance
Random write seek time13.0 msec
Average latency4.17 msec
Spindle Speed7,200 rpm
Random read seek time11.0 msec
Power
5V start max current1.0 amps
Reliability
Annual Failure Rate0.5
Physical
Width (max)69.85 mm (2.750 inches)
Weight (typical)110 grams (0.238 pounds)
Height (max)9.5 mm (0.370 inches)
Length (max)100.35 mm (3.951 inches)

External links

Seagate ST9500420AS Reviews & Benchmarks

Review the Tech - Seagate Momentus 7200.4 SATA 3Gb/s 500-GB Hard Drive ST9500420AS (9/10) - July 12, 2011
Silent PC Review - More 500GB notebook drives: Seagate Momentus 7200.4 & Hitachi Travelstar 5K500.B - Nov. 5, 2009

Other Seagate Momentus 7200.4 Reviews & Benchmarks

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