Average Bench: 85.9% (337th of 1021)

Based on 12,996 user benchmarks.  Models: OCZ-VERTEX4, OCZ-VERT OCZ-VERTEX4, OCZ-VERT EX4

The 128GB Vertex 4 has an average score of 90.5% which is the highest we have seen to date for a 120-128GB SSD. We have in excess of 100 UBM samples for the Vertex 4 and they show that the 128GB Vertex 4 performs superbly outside the lab. With peak sequential read/write speeds of 508/391 and averages of 398/325 MB/s the Vertex 4 manages to average around 75% of its peak sequential speeds, a very impressive result. The Vertex 4 was superseded by the OCZ Vertex 450 several months ago. OCZ release new versions with minor tweaks approximately every six months. Comparing the Vertex 450 to the Vertex 4 shows that the move to 20nm flash and a new Indilinx controller has reduced overall performance by around 15%, so the older Vertex 4 is actually faster than its successor. [Feb '14 SSDrivePro]


Very good average bench

The OCZ Vertex 4 128GB averaged just 14.0% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the OCZ Vertex 4 128GB near the top of the comparison list.


Avg. 4K-64Thread Mixed IO Speed 270MB/s
Avg. 4K Random Write Speed 91.4MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the OCZ Vertex 4 128GB is 39.4%. This is a relatively wide range which indicates that the OCZ Vertex 4 128GB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 265MB/s
Avg. Sustained Write Speed 286MB/s

Average Bench

(Based on 12,996 samples)
Min Avg Max
321 Read 383 454
177 Write 347 394
185 Mixed 265 306
113 SusWrite 286 376
71.9% 320 MB/s
Min Avg Max
20.1 4K Read 25.7 30.5
50.8 4K Write 91.4 129
26.1 4K Mixed 34.7 41.8
132% 50.6 MB/s
Min Avg Max
155 DQ Read 303 349
110 DQ Write 268 350
126 DQ Mixed 270 329
206% 280 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
67GB free
Firmware: 1.5
SusWrite @10s intervals: 381 377 376 378 380 368 MB/s
Read 448
Write 389
Mixed 279
SusWrite 377
84% 373 MB/s
4K Read 27.5
4K Write 94.3
4K Mixed 38.5
141% 53.4 MB/s
DQ Read 219
DQ Write 184
DQ Mixed 199
150% 201 MB/s
118GB free
Firmware: 1.5
SusWrite @10s intervals: 120 119 119 120 118 118 MB/s
Read 303
Write 193
Mixed 160
SusWrite 119
43% 194 MB/s
4K Read 23.1
4K Write 44.1
4K Mixed 25
90% 30.7 MB/s
DQ Read 28.9
DQ Write 69.6
DQ Mixed 30.6
29% 43 MB/s
42GB free
Firmware: 1.5
SusWrite @10s intervals: 343 367 366 365 363 359 MB/s
Read 366
Write 376
Mixed 257
SusWrite 361
77% 340 MB/s
4K Read 19.8
4K Write 4.5
4K Mixed 0
32% 8.1 MB/s
12,996 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 26,445,873 SSDs tested.


Approx. $116 @ launch in Apr '12
AmazonUS $21514 months
Send price feedback
Typical Vertex 4 128GB Builds (Compare 19,546 builds) See popular component choices, score breakdowns and rankings.
Gaming 51%
Desktop 71%
Workstation 46%

Motherboard: Asrock Z77 Extreme4 - $183

EDIT WITH CUSTOM PC BUILDER Value: 37% - Below average Total price: $987

Popular Vertex 4 128GB compatible motherboards:

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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
Solid State Drive Rankings (Price vs Performance) May 2020 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


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

Rethink Storage Performance...

Added 6 years ago.

Liked (edit your comment) Add link

3 years ago.


Faster than advertised and much cheaper than it says on this site. Bought one 2 years ago and still use it as my primary boot drive.—Aug '15


2 years ago.

Using it for 5 years now, working perfectly.


6 months ago.

Using it for 6 or 7 years and it's still among the fastest 128GB drives.

Above average

6 years ago.


4 years ago.


1021 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
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