Average Bench: 96.8% (195th of 992)

Based on 100,230 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]


Excellent average bench

The Samsung 840 Evo 250GB averaged just 3.2% 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-64Thread Mixed IO Speed 204MB/s
Avg. 4K Random Mixed IO Speed 48.2MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 Evo 250GB is 56.3%. This is a relatively wide range which indicates that the Samsung 840 Evo 250GB performs inconsistently under varying real world conditions.


Avg. Sustained Write Speed 193MB/s
Avg. Sequential Mixed IO Speed 347MB/s

Average Bench

(Based on 100,230 samples)
Min Avg Max
350 Read 466 507
219 Write 406 489
218 Mixed 347 418
57 SusWrite 193 298
79% 353 MB/s
Min Avg Max
25.7 4K Read 38.8 46.9
40.8 4K Write 89.4 120
25.9 4K Mixed 48.2 59.9
168% 58.8 MB/s
Min Avg Max
105 DQ Read 337 383
99.9 DQ Write 308 360
53 DQ Mixed 204 237
185% 283 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
175GB free (System drive)
Firmware: EXT0CB6Q
SusWrite @10s intervals: 385 274 264 276 276 274 MB/s
Read 504
Write 483
Mixed 400
SusWrite 292
94% 420 MB/s
4K Read 44.8
4K Write 101
4K Mixed 55
192% 67 MB/s
DQ Read 385
DQ Write 354
DQ Mixed 237
214% 326 MB/s
62GB free
Firmware: EXT0BB6Q
SusWrite @10s intervals: 329 278 277 277 277 277 MB/s
Read 447
Write 434
Mixed 386
SusWrite 286
87% 388 MB/s
4K Read 39.2
4K Write 118
4K Mixed 52.6
189% 69.8 MB/s
DQ Read 383
DQ Write 347
DQ Mixed 234
211% 321 MB/s
72GB free (System drive)
Firmware: EXT0DB6Q
SusWrite @10s intervals: 201 51 56 53 58 56 MB/s
Read 482
Write 463
Mixed 366
SusWrite 79.2
78% 347 MB/s
4K Read 43.3
4K Write 110
4K Mixed 56.3
196% 69.9 MB/s
DQ Read 381
DQ Write 345
DQ Mixed 236
212% 321 MB/s
51GB free (System drive)
Firmware: EXT0BB6Q
SusWrite @10s intervals: 228 66 55 63 61 58 MB/s
Read 424
Write 420
Mixed 318
SusWrite 88.5
70% 312 MB/s
4K Read 33.3
4K Write 83.7
4K Mixed 47.6
156% 54.9 MB/s
DQ Read 378
DQ Write 338
DQ Mixed 229
207% 315 MB/s
49GB free (System drive)
Firmware: EXT0BB6Q
SusWrite @10s intervals: 57 40 37 42 33 41 MB/s
Read 310
Write 51.2
Mixed 66.2
SusWrite 41.7
25% 117 MB/s
4K Read 28.2
4K Write 37.7
4K Mixed 19.3
87% 28.4 MB/s
DQ Read 230
DQ Write 44.8
DQ Mixed 47.4
58% 107 MB/s
100,230 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 13,030,033 SSDs tested.


Approx. $127 @ launch in Jul '13
OutletPCUS $1002 hrs
AmazonUS $2504 months
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Typical 840 Evo 250GB Builds (Compare 9,486 builds) See popular component choices, score breakdowns and rankings.
Gaming 60%
Desktop 70%
Battle cruiser
Workstation 42%
Speed boat

Motherboard: MSI Z87-G45 GAMING (MS-7821) - $242

EDIT WITH CUSTOM PC BUILDER Value: 73% - Very good Total price: $987

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.

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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.
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Solid State Drive Rankings (Price vs Performance) March 2019 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: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC

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

Added 5 years ago.

Liked (edit your comment) Add link

2 months 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


1 month ago.

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


2 years ago.


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


15 months ago.



2 months ago.

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


2 years ago.

1000 Cycles (MLC) low life duration


21 months ago.

very good comparing to my old WD Black


8 months ago.


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


24 months ago.

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


4 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


6 months ago.

Ideal for my Origin library + RAPID mode!!


4 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.


4 years ago.

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

992 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 i7-8700K $370Nvidia GTX 1070 $370Samsung 850 Evo 250GB $75
AMD Ryzen 5 1600 $122Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $105
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3000 C15 2x8GB $105SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $716SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $110SanDisk Ultra Fit 32GB $12
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