Average Bench: 29.7% (783rd of 1002)

more Based on 3,514 user benchmarks.  Models: WDC WD2500KS-00MJB0, WDC WD25 00KS-00MJB1, WDC WD25 00KS-00MJB0, WDC WD2500KS-22MJB0, WDC WD2500KS-00MJB1, WDC WD25 00KS-22MJB0, WDC WD2500KS-00M, WDC WD2500KS-22M

Very poor average bench

The WD WD2500KS-00MJB0 250GB averaged 70.3% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Mixed IO Speed 0.37MB/s
Avg. 4K Random Write Speed 1.67MB/s

Very good consistency

The range of scores (95th - 5th percentile) for the WD WD2500KS-00MJB0 250GB is just 14.5%. This is a relatively narrow range which indicates that the WD WD2500KS-00MJB0 250GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 42.4MB/s
Avg. Sequential Write Speed 51.1MB/s

Average Bench

(Based on 3,514 samples)
Min Avg Max
34.8 Read 51.9 60.7
35.6 Write 51.1 61.8
16.6 Mixed 42.4 59.7
36.3% 48.5 MB/s
Min Avg Max
0.21 4K Read 0.53 0.73
0.49 4K Write 1.67 2.15
0.15 4K Mixed 0.37 0.51
94.7% 0.86 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
156GB free
Firmware: 02.0 Max speed: SATA 2.0 300 MB/s
Read 60.1
Write 61.7
Mixed 57.7
45% 59.8 MB/s
4K Read 0.68
4K Write 2.03
4K Mixed 0.47
118% 1.06 MB/s
168GB free
Firmware: 02.0 Max speed: SATA 2.0 300 MB/s
Read 55.9
Write 55
Mixed 52.6
41% 54.5 MB/s
4K Read 0.46
4K Write 1.67
4K Mixed 0.47
103% 0.87 MB/s
126GB free
Firmware: 02.01C03 Max speed: SATA 2.0 300 MB/s
Read 53.4
Write 50.7
Mixed 36.8
35% 47 MB/s
4K Read 0.55
4K Write 2
4K Mixed 0.39
103% 0.98 MB/s
4GB free
Firmware: 1C03
Read 40.2
Write 39
Mixed 28.5
27% 35.9 MB/s
4K Read 0.03
4K Write 0.03
4K Mixed 0.02
4% 0.03 MB/s
3,514 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 9,216,491 HDDs tested.


AmazonUS $7825 mins
Send price feedback
Typical WD2500KS-00MJB0 250GB Builds (Compare 21,833 builds) See popular component choices, score breakdowns and rankings.
Gaming 12%
Tree trunk
Desktop 57%
Workstation 23%

Disqualified System: bin bin

EDIT WITH CUSTOM PC BUILDER Value: 72% - Very good Total price: $380

Popular WD2500KS-00MJB0 250GB systems:

How Fast Is Your HDD? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

UserBenchmark of the month

How it works

  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
Hard Drive Rankings (Price vs Performance) May 2018 HDD Rankings.

We calculate effective speed which measures performance for typical consumers. Effective speed is adjusted by current cost per GB to yield value for money. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top HDDs. [HDrivePro]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Fastest effective speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.


1002 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different HDDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
AMD Ryzen 5 1600 $167Nvidia GTX 1070 $447Samsung 850 Evo 250GB $63
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $295Samsung 850 Evo 500GB $140
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback