Average Bench: 96.7% (19th of 1010)

Based on 391 user benchmarks.  Model: SEAGATE ST3300657SS

Excellent average bench

The Seagate Cheetah 15K.7 SAS 300GB averaged just 3.3% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Seagate Cheetah 15K.7 SAS 300GB near the top of the comparison list.


Avg. 4K Random Mixed IO Speed 0.85MB/s
Avg. 4K Random Write Speed 2.74MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Seagate Cheetah 15K.7 SAS 300GB is 38.2%. This is a relatively wide range which indicates that the Seagate Cheetah 15K.7 SAS 300GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 133MB/s
Avg. Sequential Write Speed 168MB/s

Average Bench

(Based on 391 samples)
Min Avg Max
127 Read 168 193
123 Write 168 196
94.3 Mixed 159 191
66.9 SusWrite 133 182
117% 157 MB/s
Min Avg Max
0.62 4K Read 1.2 1.47
0.87 4K Write 2.74 3.68
0.48 4K Mixed 0.85 1.16
195% 1.6 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
240GB free
Firmware: HPS1
SusWrite @10s intervals: 189 190 190 189 190 191 MB/s
Read 189
Write 191
Mixed 93.8
SusWrite 190
121% 166 MB/s
4K Read 1.4
4K Write 3.9
4K Mixed 1.6
308% 2.3 MB/s
243GB free (System drive)
Firmware: HPS1
SusWrite @10s intervals: 137 151 146 184 174 186 MB/s
Read 176
Write 88.4
Mixed 83.1
SusWrite 163
94% 128 MB/s
4K Read 1.3
4K Write 3.1
4K Mixed 1.5
278% 1.97 MB/s
98GB free (System drive)
Firmware: 0008
SusWrite @10s intervals: 153 153 146 167 158 140 MB/s
Read 127
Write 99
Mixed 59
SusWrite 153
80% 110 MB/s
4K Read 1.4
4K Write 3.2
4K Mixed 1.6
295% 2.07 MB/s
391 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 10,132,054 HDDs tested.


AmazonUS $5522 mins
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Typical Cheetah 15K.7 SAS 300GB Builds (Compare 1,987 builds) See popular component choices, score breakdowns and rankings.
Gaming 19%
Desktop 56%
Workstation 64%

System: HP Z800 Workstation

EDIT WITH CUSTOM PC BUILDER Value: 102% - Outstanding Total price: $100

Popular Cheetah 15K.7 SAS 300GB 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.

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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Hard Drive Rankings (Price vs Performance) July 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.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


1010 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 $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $121
Intel Core i5-8600K $235AMD RX 480 $280Samsung 850 Pro 256GB $136
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $58HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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