Average Bench: 97.3% (11th of 1002)

Based on 342 user benchmarks.  Model: SEAGATE ST3300657SS

Excellent average bench

The Seagate Cheetah 15K.7 SAS 300GB averaged just 2.7% 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 0.84MB/s
Avg. 4K Random Write Speed 2.72MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Seagate Cheetah 15K.7 SAS 300GB is 35.6%. This is a relatively wide range which indicates that the Seagate Cheetah 15K.7 SAS 300GB performs inconsistently under varying real world conditions.


Avg. Sequential Read Speed 169MB/s
Avg. Sequential Write Speed 170MB/s

Average Bench

(Based on 342 samples)
Min Avg Max
128 Read 169 193
125 Write 170 196
120 Mixed 163 191
126% 167 MB/s
Min Avg Max
0.62 4K Read 1.2 1.47
0.85 4K Write 2.72 3.69
0.49 4K Mixed 0.84 1.14
193% 1.59 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
160GB free
Firmware: ES65
Read 188
Write 175
Mixed 179
136% 181 MB/s
4K Read 1.42
4K Write 1.18
4K Mixed 0.65
154% 1.08 MB/s
42GB free
Firmware: HPS1
Read 172
Write 147
Mixed 129
112% 149 MB/s
4K Read 1.38
4K Write 3.14
4K Mixed 0.89
215% 1.81 MB/s
127GB free
Firmware: HPS0
Read 146
Write 159
Mixed 143
112% 149 MB/s
4K Read 0.81
4K Write 2.94
4K Mixed 0.6
154% 1.45 MB/s
4GB free
Firmware: HPS1
Read 127
Write 125
Mixed 123
94% 125 MB/s
4K Read 1.28
4K Write 3.06
4K Mixed 1.11
233% 1.82 MB/s
4GB free
Firmware: HPS1
Read 126
Write 125
Mixed 122
94% 125 MB/s
4K Read 1.33
4K Write 3.17
4K Mixed 1.05
230% 1.85 MB/s
4GB free
Firmware: HPS1
Read 126
Write 123
Mixed 122
93% 124 MB/s
4K Read 1.17
4K Write 3.28
4K Mixed 1.06
228% 1.84 MB/s
342 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 8,795,721 HDDs tested.


AmazonUS $544 mins
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Typical Cheetah 15K.7 SAS 300GB Builds (Compare 1,703 builds) See popular component choices, score breakdowns and rankings.
Gaming 19%
Desktop 55%
Workstation 63%

System: HP Z800 Workstation

EDIT WITH CUSTOM PC BUILDER Value: 98% - Outstanding Total price: $90

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 (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) April 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.
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $300Samsung 850 Evo 500GB $137
AMD Ryzen 5 1600 $176AMD RX 480 $350Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $193SanDisk Ultra Fit 32GB $12
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