Average Bench: 97.8% (9th of 983)

Based on 189 user benchmarks.  Model: SEAGATE ST3300657SS

Excellent average bench

The Seagate Cheetah 15K.7 SAS 300GB averaged just 2.1% 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 2.8MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Seagate Cheetah 15K.7 SAS 300GB is 34.4%. This is a relatively narrow range which indicates that the Seagate Cheetah 15K.7 SAS 300GB performs reasonably consistently under varying real world conditions.


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

Average Bench

(Based on 189 samples)
Min Avg Max
136 Read 170 193
126 Write 170 196
121 Mixed 164 192
127% 168 MB/s
Min Avg Max
0.6 4K Read 1.2 1.47
0.94 4K Write 2.8 3.7
0.5 4K Mixed 0.84 1.14
195% 1.61 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest HDD (mainstream) averages a speed of 100%
279GB free
Firmware: HPS1
Read 193
Write 188
Mixed 195
145% 192 MB/s
4K Read 1.45
4K Write 3.68
4K Mixed 1.09
250% 2.07 MB/s
279GB free
Firmware: HPS1
Read 189
Write 190
Mixed 184
141% 188 MB/s
4K Read 1.41
4K Write 3.12
4K Mixed 1.02
230% 1.85 MB/s
279GB free
Firmware: HPS1
Read 188
Write 190
Mixed 187
142% 189 MB/s
4K Read 1.42
4K Write 3.21
4K Mixed 1.04
235% 1.89 MB/s
181GB free
Firmware: HPS1
Read 178
Write 183
Mixed 120
119% 160 MB/s
4K Read 1.34
4K Write 3.57
4K Mixed 1.11
245% 2 MB/s
227GB free
Firmware: 0008
Read 176
Write 171
Mixed 140
122% 163 MB/s
4K Read 1.31
4K Write 3.11
4K Mixed 0.83
204% 1.75 MB/s
78GB free
Firmware: ES64
Read 155
Write 153
Mixed 149
115% 152 MB/s
4K Read 1.41
4K Write 3.55
4K Mixed 0.7
202% 1.89 MB/s
279GB free
Firmware: HPS1
Read 144
Write 147
Mixed 139
108% 143 MB/s
4K Read 1.14
4K Write 2.39
4K Mixed 0.64
163% 1.39 MB/s
189 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 4,384,142 HDDs tested.


AmazonUS $39.8825 mins ago.
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Typical Cheetah 15K.7 SAS 300GB Builds (Compare 1,007 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: 91% - 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 (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.
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  • - Compare your components to the highest voted in class.
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Hard Drive Rankings (Price vs Performance) June 2017 HDD Rankings.

Welcome to our consumer Hard Drive comparison. We calculate effective speed which measures performance for typical consumers. Effective speed is adjusted by cost per GB to yield value for money. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top HDDs. Share your opinion by voting. [HDrivePro]


983 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 i7-7700K $309Nvidia GTX 1070 $390Samsung 850 Evo 250GB $100
Intel Core i5-7600K $225AMD RX 480 $608Samsung 850 Pro 256GB $138
AMD Ryzen 7 1700 $278Nvidia GTX 1060-6GB $239Samsung 850 Evo 500GB $160
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $127SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $83G.SKILL Trident Z DDR4 3200 C14 4x16GB $696SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $46HyperX Fury DDR4 2133 C14 2x8GB $133SanDisk Ultra Fit 32GB $13
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