Real World Speed
Performance profile from 2,754 user samples
408 User Benchmarks
Best Bench: 131% 4.5TB free
Worst Bench: 90% 961GB free
Poor: 90% Great: 131%
SPEED RANK: 1st / 983
2,346 User Benchmarks
Best Bench: 59% 836GB free
Worst Bench: 35% 377GB free
Poor: 35% Great: 59%
SPEED RANK: 374th / 983
Effective Speed
Effective HDD Speed
114 % Hugely faster effective speed.
47.8 % -138%
Avg. Sequential Read Speed
178 MB/s Hugely faster read speed.
83.7 MB/s -113%
Avg. Sequential Write Speed
218 MB/s Hugely faster write speed.
82.9 MB/s -163%
4K Read
Avg. 4K Random Read Speed
4.2 MB/s Hugely faster random read.
0.54 MB/s -678%
4K Write
Avg. 4K Random Write Speed
2.7 MB/s Hugely faster random write.
0.92 MB/s -193%
Avg. Sequential Mixed IO Speed
169 MB/s Hugely faster mixed IO speed.
76.5 MB/s -121%
4K Mixed
Avg. 4K Random Mixed IO Speed
0.3 MB/s Slightly faster random mixed IO.
0.27 MB/s -11%
Peak Sequential Read Speed
217 MB/s Hugely faster peak read speed.
104 MB/s -109%
Peak Sequential Write Speed
248 MB/s Hugely faster peak write speed.
104 MB/s -138%
4K Read
Peak 4K Random Read Speed
7.32 MB/s Hugely faster peak random read.
0.75 MB/s -876%
4K Write
Peak 4K Random Write Speed
3.31 MB/s Hugely faster peak random write.
1.24 MB/s -167%
Peak Sequential Mixed IO Speed
207 MB/s Hugely faster peak mixed IO speed.
98.6 MB/s -110%
4K Mixed
Peak 4K Random Mixed IO Speed
0.38 MB/s Slightly faster peak random mixed IO.
0.35 MB/s -9%
Market Share
Based on 4,661,179 HDDs tested.
Market Share
Market Share (trailing 30 days)
0.08 % Much higher market share.
0.06 % -33%
Value For Money
78.1 % Insanely better value.
6.59 % -1,086%
User Rating
UBM User Rating
69 % Much more popular.
52 % -33%
Price (score)
$251 -59% $104 Much cheaper.
25 Months Much more recent.
86 Months -71%
6TB 500GB

The Momentus XT is a 7200 rpm low power Laptop SSHD (Solid State Hard Drive). The XT is one of the early SSHD models and at nearly four years of age it's now over the hill and struggles to keep up with newer drives. With peak sequential speeds in the region of 100 MB/s the Momentus is approximately 70% slower than the current group leaders. Most SSHDs offer relatively good small file 4K read and write performance but that isn't the case for the Momentus XT which only averages 0.6 MB/s in the random 4K tests. There are far better alternatives currently available for the same money. [Jan '14 HDrivePro]


Hard Drive Rankings (Price vs Performance) July 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]

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
  • - 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.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i7-7700K $295Nvidia GTX 1070 $380Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $268AMD RX 480 $410Samsung 850 Pro 256GB $136
Intel Core i5-7600K $238Nvidia GTX 1060-6GB $270Samsung 850 Evo 500GB $159
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $137SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $83G.SKILL Trident Z DDR4 3200 C14 4x16GB $714SanDisk Extreme 32GB $23
Seagate Barracuda 7200.14 1TB $44HyperX Fury DDR4 2133 C14 2x8GB $128SanDisk Ultra Fit 32GB $13
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