Controller: LSI SandForce SF2281. Flash Memory: Intel Synchronous 25nm MLC

Controller: LSI SandForce SF2281. NAND Memory: Micron 20nm MLC.

Real World Speed
Performance profile from 24,685 user samples
7,012 User Benchmarks
Best Bench: 77% 53GB free
Worst Bench: 46% 42GB free
Poor: 46% Great: 77%
SPEED RANK: 479th / 885
17,673 User Benchmarks
Best Bench: 64% 82GB free
Worst Bench: 40% 34GB free
Poor: 40% Great: 64%
SPEED RANK: 625th / 885
Effective Speed
Effective SSD Speed
62.7 % Faster effective speed.
53.1 %
Avg. Sequential Read Speed
471 MB/s Slightly faster read speed.
431 MB/s
Avg. Sequential Write Speed
144 MB/s Faster write speed.
114 MB/s
4K Read
Avg. 4K Random Read Speed
27.6 MB/s Much faster random read.
20.6 MB/s
4K Write
Avg. 4K Random Write Speed
75.7 MB/s +1% 74.7 MB/s
Avg. Sequential Mixed IO Speed
211 MB/s Much faster mixed IO speed.
156 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
15 MB/s Faster random mixed IO.
12.6 MB/s
Peak Sequential Read Speed
515 MB/s +2% 505 MB/s
Peak Sequential Write Speed
162 MB/s Faster peak write speed.
131 MB/s
4K Read
Peak 4K Random Read Speed
38.2 MB/s Much faster peak random read.
29 MB/s
4K Write
Peak 4K Random Write Speed
116 MB/s Slightly faster peak random write.
105 MB/s
Peak Sequential Mixed IO Speed
239 MB/s Faster peak mixed IO speed.
184 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
21.2 MB/s Faster peak random mixed IO.
17.8 MB/s
Market Share
Based on 5,667,951 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.17 % 0.7 % Hugely higher market share.
Value For Money
26.3 % 41.1 % Much better value.
User Rating
UBM User Rating
61 % 61 %
Price (score)
$145 $64 Much cheaper.
72 Months 44 Months Much more recent.
DQ Read
Peak 4K-64Thread Read Speed
231 MB/s Hugely faster peak deep queue read.
103 MB/s
DQ Write
Peak 4K-64Thread Write Speed
162 MB/s Slightly faster peak deep queue write.
145 MB/s
AS-SSD Total
AS-SSD Total Score
777 Pts Much stronger server IO.
533 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
59.1 MB/s Much faster peak deep queue mixed IO.
36 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
133 MB/s Hugely faster deep queue read.
61.2 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
130 MB/s Faster deep queue write.
111 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
36.5 MB/s Much faster deep queue mixed IO.
22.6 MB/s
120GB 120GB

The Intel 520 Series was Intel's first SSD to feature a Sandforce 2281 controller. This controller has powered countless SSDs over the last three years but is now dated and is known to be limited in the area of incompressible write speed. The 120GB Intel 520 scored peak and average sequential read/write speeds of 514/157 and 421/133. These read speeds are good but the peak write of 157 MB/s lags the group leaders average of 313 MB/s by nearly 100%. This relative inability to write lowers the 520's overall effective speed to 403 MB/s or 15% lower than the 459 MB/s achieved by the group leaders. At two years of age the Intel 520 can no longer compete with newer drives, there is far better value available amongst the group leaders[Feb '14 SSDrivePro]


The Kingston HyperX Fury has the same controller as its HyperX 3K sibling; the only difference between the two drives is the use of cheaper Micron 20nm NAND in the newer Fury. Comparing the performance differences between the HyperX Fury and 3K shows that the newer 20nm NAND results in an effective performance decrease of around 30% for a price saving of just 12%. The Fury was never aimed at the high performance sector of the market but given the known compressible performance weaknesses of its Sandforce 2281 controller and its relatively non-budget price tag, the 120GB Fury will struggle to find rational takers in today's market. There are far better value alternatives available for just a few more dollars. [Sep '14 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) February 2018 SSD Rankings.

Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. 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 SSDs. [SSDrivePro]


Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world 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.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
How Fast Is Your SSD? (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

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Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $88
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $149
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $125
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $975SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $206SanDisk Extreme 16GB $18
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