Average Bench: 67.7% (610th of 1003)

Based on 19,193 user benchmarks.  Model: Samsung SSD 840 Series

The Samsung 840 is the budget version of the 840 Pro, the main difference between the hardware on the two drives is the type of flash memory used. The cheaper 840 uses TLC NAND which is cheaper than the MLC found in the Pro version of this drive. The performance hit as a result of the cheaper TLC memory is approximately 30%. The 840 delvers both average real world speeds (435 MB/s) and average enterprise speeds (AS-SSD Total Score 920). The relative weak spots in this drives performance profile are its write ability, where it scores just 254 MB/s in the sequential write test. The upside to the lost performance over the Pro version is a significant reduction in price which leaves this drive an average value for money proposition at its current price of £135. There are, however, better value drives to be had elsewhere including Samsungs own newly released EVO which effectively supersedes the 840. [Aug '13 SSDrivePro]


Above average average bench

The Samsung 840 250GB averaged 32.3% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K-64Thread Read Speed 317MB/s
Avg. 4K Random Read Speed 25.3MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Samsung 840 250GB is 39.2%. This is a relatively wide range which indicates that the Samsung 840 250GB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 145MB/s
Avg. Sustained Write Speed 160MB/s

Average Bench

(Based on 19,193 samples)
Min Avg Max
299 Read 409 483
61.7 Write 176 254
89.5 Mixed 145 178
47.4 SusWrite 160 248
49% 222 MB/s
Min Avg Max
17.3 4K Read 25.3 30.8
36.2 4K Write 70.8 104
14.7 4K Mixed 22.1 25.9
104% 39.4 MB/s
Min Avg Max
124 DQ Read 317 369
66.7 DQ Write 155 220
29.9 DQ Mixed 53.8 59.3
88.5% 175 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
218GB free
Firmware: DXT0AB0Q
SusWrite @10s intervals: 214 241 242 243 243 244 MB/s
Read 476
Write 254
Mixed 172
SusWrite 238
63% 285 MB/s
4K Read 27.6
4K Write 82.4
4K Mixed 23.5
116% 44.5 MB/s
DQ Read 350
DQ Write 212
DQ Mixed 57.2
103% 207 MB/s
28GB free
Firmware: DXT0AB0Q
SusWrite @10s intervals: 237 232 240 215 154 123 MB/s
Read 406
Write 247
Mixed 164
SusWrite 200
56% 254 MB/s
4K Read 29.6
4K Write 60
4K Mixed 25.1
109% 38.2 MB/s
DQ Read 198
DQ Write 199
DQ Mixed 59
83% 152 MB/s
48GB free (System drive)
Firmware: DXT08B0Q
SusWrite @10s intervals: 142 167 212 186 159 205 MB/s
Read 422
Write 139
Mixed 152
SusWrite 178
49% 223 MB/s
4K Read 24.5
4K Write 65.9
4K Mixed 20.7
98% 37 MB/s
DQ Read 352
DQ Write 125
DQ Mixed 56
89% 178 MB/s
26GB free (System drive)
Firmware: DXT09B0Q
SusWrite @10s intervals: 47 45 46 52 121 46 MB/s
Read 312
Write 56.7
Mixed 85.2
SusWrite 59.4
28% 128 MB/s
4K Read 18.2
4K Write 45
4K Mixed 19.1
76% 27.4 MB/s
DQ Read 364
DQ Write 61
DQ Mixed 48.5
78% 158 MB/s
19,193 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 15,731,349 SSDs tested.


Approx. $195 @ launch in Oct '12
AmazonUS $1999 months
OutletPCUS $20814 months
EbayUS $41118 mins
Send price feedback
Typical 840 250GB Builds (Compare 14,111 builds) See popular component choices, score breakdowns and rankings.
Gaming 59%
Desktop 62%
Workstation 38%
Jet ski

Motherboard: Asrock Z77 Extreme4 - $167

EDIT WITH CUSTOM PC BUILDER Value: 61% - Good Total price: $960

Popular 840 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.
  • - 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) July 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 MDX. Flash Memory: Samsung 21nm Toggle Mode TLC

The single best upgrade for your PC...

Added 6 years ago.

Very poor

5 years ago.

Review  hexus.net/...

Image  img.hexus.net/...
AS SSD Benchmark Speed Test

AS SSD Benchmark Speed Test

Review  www.hardocp.com/...

Review  thessdreview.com/...

1003 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 $350Nvidia GTX 1070 $400Samsung 850 Evo 250GB $104
AMD Ryzen 5 2600 $120Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $103
AMD Ryzen 7 2700X $222Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
Seagate Barracuda 1TB (2016) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $70G.SKILL Trident Z DDR4 3200 C14 4x16GB $607SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $41Corsair Vengeance LPX DDR4 3200 C16 2x8GB $77SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback