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 16118 user samples
14992 User Benchmarks
Best Bench: 105% 171GB free
Worst Bench: 39% 66GB free
Worst: 39% Best: 105%
SPEED RANK: 146th / 753
1126 User Benchmarks
Best Bench: 116% 196GB free
Worst Bench: 41% 44GB free
Worst: 41% Best: 116%
SPEED RANK: 87th / 753
Effective Speed
Effective SSD Speed
80.3 % -5% 84.5 % Slightly faster effective speed.
Market Share
Based on 764,116 SSDs tested.
Market Share
Market Share (trailing 30 days)
2.8 % Insanely higher market share.
0.2 % -1,300%
Value For Money
65.2 % Hugely better value.
29.2 % -123%
User Rating
UBM User Rating
57 % -5% 60 % Slightly more popular.
Price (score)
$125 Much cheaper.
$400 -69%
Avg. Sequential Read Speed
478 MB/s Slightly faster read speed.
445 MB/s -7%
Avg. Sequential Write Speed
336 MB/s -17% 394 MB/s Faster write speed.
4K Read
Avg. 4K Random Read Speed
35.8 MB/s Much faster random read.
25.8 MB/s -39%
4K Write
Avg. 4K Random Write Speed
60.4 MB/s -37% 82.8 MB/s Much faster random write.
Avg. Sequential Mixed IO Speed
318 MB/s -18% 376 MB/s Faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
20.2 MB/s -23% 24.8 MB/s Faster random mixed IO.
Peak Sequential Read Speed
509 MB/s +2% 499 MB/s -2%
Peak Sequential Write Speed
376 MB/s -27% 478 MB/s Faster peak write speed.
4K Read
Peak 4K Random Read Speed
44.7 MB/s Much faster peak random read.
33.2 MB/s -35%
4K Write
Peak 4K Random Write Speed
88.6 MB/s -44% 128 MB/s Much faster peak random write.
Peak Sequential Mixed IO Speed
356 MB/s -22% 435 MB/s Faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
26.7 MB/s -38% 36.8 MB/s Much faster peak random mixed IO.
34 Months Much more recent.
49 Months -31%
DQ Read
Peak 4K-64Thread Read Speed
368 MB/s Slightly faster peak deep queue read.
335 MB/s -10%
DQ Write
Peak 4K-64Thread Write Speed
255 MB/s -26% 321 MB/s Faster peak deep queue write.
AS-SSD Total
AS-SSD Total Score
1,092 Pts -4% 1,140 Pts +4%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
83.9 MB/s -48% 124 MB/s Much faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
192 MB/s Slightly faster deep queue read.
177 MB/s -8%
ADQ Write
Avg. 4K-64Thread Write Speed
157 MB/s -25% 197 MB/s Faster deep queue write.
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
47.6 MB/s -54% 73.2 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 User Rankings (Charts) May 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: DX9 and DX10 3D performance.
  • - 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 $310Nvidia GTX 970 $305Samsung 850 Evo 250GB $86
Intel Core i7-4790K $323Nvidia GTX 980 Ti $595Samsung 850 Pro 256GB $119
Intel Core i5-6600K $220AMD R9 390 $330Samsung 850 Evo 500GB $150
WD Blue 1TB (2012) $54G.SKILL Ripjaws 4 DDR4 3000 C15 4x4GB $98SanDisk Extreme 64GB $31
Seagate Barracuda 7200.14 3TB $77Corsair Vengeance LPX DDR4 2666 C16 2x8GB $58SanDisk Extreme 32GB $21
Seagate Barracuda 7200.14 1TB $50G.SKILL Trident Z DDR4 3200 C16 2x8GB $88SanDisk Extreme 16GB $15
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