Average Bench: 52.8% (286th of 995)

Based on 952 user benchmarks.  Models: STM3250318AS, STM32503 18AS, STM32503 STM3250318AS

Average average bench

The Seagate STM3250318AS 250GB averaged 47.2% 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 0.42MB/s
Avg. 4K Random Write Speed 1.49MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Seagate STM3250318AS 250GB is 25.1%. This is a relatively narrow range which indicates that the Seagate STM3250318AS 250GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 68.4MB/s
Avg. 4K Random Read Speed 0.51MB/s

Average Bench

(Based on 952 samples)
Min Avg Max
71.2 Read 93.2 118
68.4 Write 90.7 115
22.9 Mixed 68.4 106
62.8% 84.1 MB/s
Min Avg Max
0.19 4K Read 0.51 0.69
0.67 4K Write 1.49 1.86
0.22 4K Mixed 0.42 0.61
95.4% 0.81 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
227GB free
Firmware: CC37 Max speed: SATA 2.0 300 MB/s
Read 99.2
Write 96.3
Mixed 89
71% 94.9 MB/s
4K Read 0.67
4K Write 1.74
4K Mixed 0.63
131% 1.01 MB/s
189GB free
Firmware: CC38 Max speed: SATA 2.0 300 MB/s
Read 101
Write 86
Mixed 78.1
66% 88.2 MB/s
4K Read 0.1
4K Write 1.52
4K Mixed 0.48
85% 0.7 MB/s
211GB free
Firmware: 1.00
Read 65
Write 110
Mixed 81
64% 85.2 MB/s
4K Read 0.48
4K Write 1.94
4K Mixed 0.31
90% 0.91 MB/s
86GB free
Firmware: CC38 Max speed: SATA 2.0 300 MB/s
Read 92.9
Write 77.3
Mixed 16.6
45% 62.2 MB/s
4K Read 0.51
4K Write 1.45
4K Mixed 0.28
80% 0.75 MB/s
14GB free
Firmware: CC38 Max speed: SATA 2.0 300 MB/s
Read 90.2
Write 77.2
Mixed 78.8
62% 82.1 MB/s
4K Read 0.54
4K Write 1.68
4K Mixed 0.58
118% 0.93 MB/s
64GB free
Firmware: CC37 Max speed: SATA 2.0 300 MB/s
Read 95.8
Write 31.2
Mixed 41.7
42% 56.2 MB/s
4K Read 0.37
4K Write 0.35
4K Mixed 0.28
53% 0.33 MB/s
952 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,299,772 HDDs tested.

Typical STM3250318AS 250GB Builds (Compare 1,647 builds) See popular component choices, score breakdowns and rankings.
Gaming 56%
Desktop 54%
Workstation 44%
Speed boat

Motherboard: Gigabyte GA-990FX-GAMING

EDIT WITH CUSTOM PC BUILDER Value: 70% - Very good Total price: $595

Popular STM3250318AS 250GB compatible motherboards:

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) March 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.


995 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.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $85
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $335Samsung 850 Evo 500GB $150
AMD Ryzen 5 1600 $188AMD RX 480 $400Samsung 850 Pro 256GB $146
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $216SanDisk Extreme 16GB $18
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback