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 5075 user samples
4495 User Benchmarks
Best Bench: 103% 40GB free
Worst Bench: 41% 174GB free
Worst: 41% Best: 103%
SPEED RANK: 152nd / 704
580 User Benchmarks
Best Bench: 116% 207GB free
Worst Bench: 39% 182GB free
Worst: 39% Best: 116%
SPEED RANK: 64th / 704
Effective Speed
Effective SSD Speed
78.1 % -11% 86.4 % Slightly faster effective speed.
Avg. Sequential Read Speed
473 MB/s +4% 456 MB/s -4%
Avg. Sequential Write Speed
333 MB/s -19% 396 MB/s Faster write speed.
4K Read
Avg. 4K Random Read Speed
33.6 MB/s Faster random read.
26.4 MB/s -27%
4K Write
Avg. 4K Random Write Speed
52.1 MB/s -60% 83.6 MB/s Much faster random write.
Avg. Sequential Mixed IO Speed
306 MB/s -23% 376 MB/s Faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
19.5 MB/s -29% 25.1 MB/s Faster random mixed IO.
Peak Sequential Read Speed
510 MB/s +0% 509 MB/s -0%
Peak Sequential Write Speed
377 MB/s -28% 483 MB/s Faster peak write speed.
4K Read
Peak 4K Random Read Speed
44.3 MB/s Faster peak random read.
34.1 MB/s -30%
4K Write
Peak 4K Random Write Speed
85.3 MB/s -56% 133 MB/s Much faster peak random write.
Peak Sequential Mixed IO Speed
356 MB/s -21% 432 MB/s Faster peak mixed IO speed.
4K Mixed
Peak 4K Random Mixed IO Speed
26.4 MB/s -33% 35.2 MB/s Much faster peak random mixed IO.
Value For Money
61.6 % Better value.
51.3 % -20%
User Rating
UBM User Rating
70 % Slightly more popular.
63 % -11%
Price (score)
$130 Much cheaper.
$194 -33%
25 Months Much more recent.
40 Months -38%
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
258 MB/s -28% 329 MB/s Faster peak deep queue write.
AS-SSD Total
AS-SSD Total Score
1,090 Pts -6% 1,158 Pts Slightly stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
82.8 MB/s -49% 123 MB/s Much faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
217 MB/s Slightly faster deep queue read.
194 MB/s -12%
ADQ Write
Avg. 4K-64Thread Write Speed
163 MB/s -33% 216 MB/s Much faster deep queue write.
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
53.8 MB/s -45% 77.9 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) August 2015 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]

Group Test Results

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 each of the components in your PC and then compare your results to other users with exactly the same hardware. You can quickly size up your PC and identify hardware problems or bottlenecks.

User benchmark of the month

How it works

  • - Download and run UserBenchMark (UBM)
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - Drive benchmarks include: read, write and mixed IO.
  • - CPU benchmarks include: integer, floating and string.
  • - GPU benchmarks include: DX9 and DX10 3D performance.
  • - 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
  • - Share your opinion by voting
Custom PC Builder (Start a new build) Compare component prices, popularity, speed and value for money.

PC Builder will help you build your perfect PC by clearly presenting relevant performance statistics together with price, compatibility and popularity data.

Frequently Asked Questions


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The Best.
SanDisk Extreme 64GB $35Samsung 850 Evo 250GB $100Intel Core i7-4790K $322Barracuda 7200.14 1TB $48Nvidia GTX 970 $320
SanDisk Extreme 16GB $16Samsung 850 Pro 256GB $133Intel Core i5-4690K $232Seagate Desktop SSHD 1TB $67AMD R9 270X $185
SanDisk Extreme 32GB $22Samsung 850 Evo 500GB $173Intel Pentium G3258 $64WD Black 1TB (2013) $70AMD R9 290X $380
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