Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC.

Controller: Indilinx Everest 2 IDX400M00-BC. Flash Memory: Intel Synchronous 25nm MLC.

Real World Speed
Performance profile from 22,073 user samples
20,568 User Benchmarks
Best Bench: 96% 170GB free
Worst Bench: 59% 45GB free
Worst: 59% Best: 96%
SPEED RANK: 176th / 805
1,505 User Benchmarks
Best Bench: 105% 238GB free
Worst Bench: 60% 31GB free
Worst: 60% Best: 105%
SPEED RANK: 92nd / 805
Effective Speed
Effective SSD Speed
79.2 % -7% 85.1 % Slightly faster effective speed.
Avg. Sequential Read Speed
481 MB/s Slightly faster read speed.
445 MB/s -8%
Avg. Sequential Write Speed
317 MB/s -24% 394 MB/s Faster write speed.
4K Read
Avg. 4K Random Read Speed
36.3 MB/s Much faster random read.
25.9 MB/s -40%
4K Write
Avg. 4K Random Write Speed
58.3 MB/s -45% 84.4 MB/s Much faster random write.
Avg. Sequential Mixed IO Speed
326 MB/s -15% 375 MB/s Faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
20.7 MB/s -21% 25.1 MB/s Faster random mixed IO.
Peak Sequential Read Speed
509 MB/s +2% 497 MB/s -2%
Peak Sequential Write Speed
352 MB/s -36% 479 MB/s Much faster peak write speed.
4K Read
Peak 4K Random Read Speed
45.7 MB/s Much faster peak random read.
33.4 MB/s -37%
4K Write
Peak 4K Random Write Speed
84.6 MB/s -51% 128 MB/s Much faster peak random write.
Peak Sequential Mixed IO Speed
356 MB/s -22% 434 MB/s Faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
27.4 MB/s -26% 34.6 MB/s Faster peak random mixed IO.
Market Share
Based on 1,378,128 SSDs tested.
Market Share
Market Share (trailing 30 days)
3.1 % Insanely higher market share.
0.2 % -1,450%
Value For Money
72.8 % Hugely better value.
29.4 % -148%
User Rating
UBM User Rating
55.3 % -10% 61 % Slightly more popular.
Price (score)
$106 Much cheaper.
$400 -74%
39 Months More recent.
54 Months -28%
DQ Read
Peak 4K-64Thread Read Speed
367 MB/s Slightly faster peak deep queue read.
336 MB/s -9%
DQ Write
Peak 4K-64Thread Write Speed
241 MB/s -33% 321 MB/s Much faster peak deep queue write.
AS-SSD Total
AS-SSD Total Score
1,071 Pts -7% 1,141 Pts Slightly stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
83.9 MB/s -45% 122 MB/s Much faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
187 MB/s +3% 181 MB/s -3%
ADQ Write
Avg. 4K-64Thread Write Speed
154 MB/s -29% 198 MB/s Faster deep queue write.
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
48.1 MB/s -52% 73.1 MB/s Much faster deep queue mixed IO.
250GB 256GB

The Evo is remarkable in that, like the Sandisk Extreme II, it features a second level cache. For the 250 GB Evo this consists of a 3 GB Turbowrite cache (TWC) which is a block of high speed Flash Memory. When the TWC is exhausted write speeds drop by approximately 50% but that won't often happen under typical consumer workloads. In terms of raw performance, even with its cache, the Evo still isn't the fastest drive. With a real world speed index reading of 439 MB/s the EVO is however, within reach of the two speed leaders (Vector and 850 Pro). At a price point of $130 the Evo is around 30% cheaper making it the best value for money SSDs I have seen in 2014. Comparing the Evo and the Sandisk Ultra Plus shows that the Evo is the winner but the Sandisk may be a viable alternative thanks to its cache-free, and therefore more consistent performance during extended writes. [Aug '14 SSDrivePro]


The Vertex 4 is just over a year old but thanks to its recent firmware update (1.5), it still manages to perform almost on a par with the best drives currently available. One of the striking aspects of the Vertex is its well-rounded performance profile. With an AS-SSD score of 1137 and a real world speed of 548 the Vertex 4 is able to cope extremely well with both server and consumer type workloads. This drive uses the new Indilux Everest 2 controller, which unlike the previous generations of this drive which used a SandForce controller, is able to cope admirably with both compressible and incompressible data. Overall, the Vertex 4 is a great performing SSD that said, there are better value for money (and younger) drives available, including the Vertex 4's own successor, the OCZ Vector[Jun '13 SSDrivePro]


Solid State Drive Rankings (Price vs Performance) October 2016 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. 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 SSDs. Share your opinion by voting. [SSDrivePro]

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.

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Intel Core i7-6700K $299Nvidia GTX 970 $235Samsung 850 Evo 250GB $93
Intel Core i5-6600K $210Nvidia GTX 1070 $390Samsung 850 Pro 256GB $120
Intel Core i7-4790K $310AMD RX 480 $230Samsung 850 Evo 500GB $157
WD Black 1TB (2013) $69G.SKILL Trident Z DDR4 3200 C16 2x8GB $110SanDisk Extreme 64GB $28
Seagate Barracuda 7200.14 1TB $43HyperX Fury DDR4 2133 C14 2x8GB $80SanDisk Extreme 32GB $22
WD Black 6TB (2015) $280G.SKILL Trident Z DDR4 3200 C14 4x16GB $464SanDisk Extreme 16GB $16
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