Average Bench: 80% (185th of 848)

Based on 32,271 user benchmarks.  Models: Samsung SSD 840 EVO 250GB, Samsung SSD 840 EVO, Samsung SSD 840 EVO 250G

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]


Very good average bench

The Samsung 840 Evo 250GB averaged just 19.9% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung 840 Evo 250GB near the top of the comparison list.


Avg. 4K Random Read Speed 36.8MB/s
Avg. Sequential Read Speed 487MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Evo 250GB is 37.4%. This is a relatively wide range which indicates that the Samsung 840 Evo 250GB performs inconsistently under varying real world conditions.


Avg. 4K-64Thread Write Speed 155MB/s
Avg. 4K-64Thread Mixed IO Speed 49.4MB/s

Average Bench

(Based on 32,271 samples)
Min Avg Max
371 Read 487 510
204 Write 318 352
215 Mixed 329 357
83.7% 378 MB/s
Min Avg Max
24.9 4K Read 36.8 45.7
28.8 4K Write 58.4 84.3
12.2 4K Mixed 20.9 27.5
113% 38.7 MB/s
Min Avg Max
32.9 DQ Read 195 368
48 DQ Write 155 242
14.5 DQ Mixed 49.4 84.7
71.1% 133 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
141GB free
Firmware: EXT0CB6Q Max speed: SATA 3.0 600 MB/s
Read 498
Write 345
Mixed 349
88% 397 MB/s
4K Read 47.3
4K Write 91.9
4K Mixed 29
158% 56.1 MB/s
DQ Read 374
DQ Write 246
DQ Mixed 84.1
124% 235 MB/s
22GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
Read 491
Write 315
Mixed 351
85% 386 MB/s
4K Read 36.9
4K Write 68.1
4K Mixed 24.3
123% 43.1 MB/s
DQ Read 361
DQ Write 227
DQ Mixed 83.9
119% 224 MB/s
20GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
Read 499
Write 346
Mixed 354
89% 400 MB/s
4K Read 38.5
4K Write 54.5
4K Mixed 23.8
118% 38.9 MB/s
DQ Read 254
DQ Write 156
DQ Mixed 73.4
90% 161 MB/s
134GB free
Firmware: EXT0DB6Q Max speed: SATA 3.0 600 MB/s
Read 504
Write 336
Mixed 345
88% 395 MB/s
4K Read 36.3
4K Write 60.4
4K Mixed 24.4
118% 40.4 MB/s
DQ Read 160
DQ Write 200
DQ Mixed 62.1
80% 141 MB/s
152GB free
Firmware: EXT0CB6Q Max speed: SATA 3.0 600 MB/s
Read 503
Write 348
Mixed 351
89% 401 MB/s
4K Read 32.7
4K Write 55.7
4K Mixed 16.8
101% 35.1 MB/s
DQ Read 35.6
DQ Write 64.1
DQ Mixed 49.5
38% 49.8 MB/s
32,271 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 2,574,185 SSDs tested.


OutletPCUS $167.841 day ago.
AmazonUS $168.002 days ago.
EbayUS $185.001 day ago.
Send price feedback
Typical 840 Evo 250GB Builds (Compare 4,044 builds) See popular component choices, score breakdowns and rankings.
Gaming 63%
Desktop 77%
Workstation 57%

Motherboard: Asus MAXIMUS VII HERO

EDIT WITH CUSTOM PC BUILDER Value: 71% - Very good Total price: $902

Popular 840 Evo 250GB 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 (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 userbenchmark.com.
  • - 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.
Solid State Drive Rankings (Price vs Performance) April 2017 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]


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

It's time for your pc to evlove...

Added 3 years ago.

Disliked (edit your comment) Add link

3 days ago.

Review  www.userbenchmark.com/...


Speedy and smooth. Excellent load time of OS (from restart close to restart desktop (including typing in my password) is roughly 8 - 10 seconds....every time.—Apr '15


works great in Samsung ATIV8, i7, 16gb mem. boots super fast under12 sec, restart under 11sec. owned since it was released. —Sep '15


2 years ago.

Review  www.custompcreview.com/...

Image  i2.wp.com/...
Jul '13 AS SSD Benchmark Speed Test Score

Jul '13 AS SSD Benchmark Speed Test Score


1 day ago.

Only RAPID mode with RAID support is missing. Alone or in RAID, best SSD price/quality.


5 days ago.

I am very happy with this SSD and fully recommended it.


3 months ago.

1000 Cycles (MLC) low life duration


2 months ago.

very good speed....


2 months ago.

very good comparing to my old WD Black


7 months ago.


This SSD is really Fast!.. nice improve over 840. it's quite good as 840 pro!—Sep '14


1 month ago.

Good value for the money.


26 days ago.

Can someone explain why my ssd does 4102 mb/s write and 2684 mb/s read ??


8 months ago.


Pretty fast and easy to use under Windows and just a little bit higher price tag than other products —Sep '14


16 months ago.

Works well


2 years ago.

Super Fast Drive.....


3 years ago.

Had installed one of these bad boys for my Father's Workstation PC. He loves the SSD to death! It makes the entire system snappy and responsive to every click, and application you run! He is very impressed by his new build altogether, but noticeably, with how the jump from a HDD to an SSD made such a difference in speed. A+ drive right here.


2 years ago.

I got up to 4000MB/s, is this a bug or a result of RAPID?

▲Like   ▼Dislike

You have viewed 59 pages, please contribute.

848 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.
Intel Core i7-7700K $310Nvidia GTX 1070 $330Samsung 850 Evo 250GB $106
Intel Pentium G4560 $60AMD RX 480 $220Samsung 850 Pro 256GB $140
Intel Core i5-7600K $229Nvidia GTX 1060-6GB $219Samsung 850 Evo 500GB $170
Seagate Barracuda 1TB (2016) $50Corsair Vengeance LPX DDR4 3000 C15 2x8GB $130SanDisk Extreme 32GB $22
Seagate Barracuda 3TB (2016) $90G.SKILL Trident Z DDR4 3200 C14 4x16GB $700SanDisk Extreme 64GB $35
Seagate Barracuda 7200.14 1TB $46Corsair Vengeance LPX DDR4 3200 C16 2x8GB $115SanDisk Ultra Fit 32GB $9
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback