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 4499 user samples
4045 User Benchmarks
Best Bench: 114% 160GB free
Worst Bench: 17% 21GB free
Worst: 17% Best: 114%
SPEED RANK: 95th / 666
454 User Benchmarks
Best Bench: 116% 153GB free
Worst Bench: 39% 182GB free
Worst: 39% Best: 116%
SPEED RANK: 63rd / 666
Effective Speed
Effective SSD Speed
85.5 % -5% 89.4 % +5%
Avg. Sequential Read Speed
479 MB/s Slightly faster read speed.
455 MB/s -5%
Avg. Sequential Write Speed
340 MB/s -16% 394 MB/s Faster write speed.
4K Read
Avg. 4K Random Read Speed
35.2 MB/s Much faster random read.
26.3 MB/s -34%
4K Write
Avg. 4K Random Write Speed
57.5 MB/s -45% 83.3 MB/s Much faster random write.
Avg. Sequential Mixed IO Speed
315 MB/s -19% 375 MB/s Faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
19.5 MB/s -29% 25.2 MB/s Faster random mixed IO.
Peak Sequential Read Speed
511 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
45.6 MB/s Much faster peak random read.
34.2 MB/s -33%
4K Write
Peak 4K Random Write Speed
90.9 MB/s -46% 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
26.8 MB/s -34% 36 MB/s Much faster peak random mixed IO.
Value For Money
80.2 % Hugely better value.
33.3 % -141%
User Rating
UBM User Rating
73 % More popular.
62 % -18%
Price (score)
$133 Much cheaper.
$470 -72%
22 Months Much more recent.
37 Months -41%
DQ Read
Peak 4K-64Thread Read Speed
368 MB/s Slightly faster peak deep queue read.
337 MB/s -9%
DQ Write
Peak 4K-64Thread Write Speed
259 MB/s -27% 328 MB/s Faster peak deep queue write.
AS-SSD Total
AS-SSD Total Score
1,101 Pts -5% 1,158 Pts Slightly stronger server IO.
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
83.2 MB/s -48% 123 MB/s Much faster peak deep queue mixed IO.
ADQ Read
Avg. 4K-64Thread Read Speed
191 MB/s -3% 196 MB/s +3%
ADQ Write
Avg. 4K-64Thread Write Speed
158 MB/s -37% 216 MB/s Much faster deep queue write.
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
48.4 MB/s -62% 78.4 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]


How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute.

Welcome to our free PC speed test tool. UserBenchMark will compare the strengths and weaknesses of each component in your PC to the ten most popular components in its class.

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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