SamsungMZ-7KE256BW
SamsungMZ-7TE250BW

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND

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

Real World Speed
Performance profile from 101,462 user samples
39,270 User Benchmarks
Best Bench: 122% 114GB free
Worst Bench: 64% 73GB free
Poor: 64% Great: 122%
SPEED RANK: 73rd / 885
62,192 User Benchmarks
Best Bench: 95% 33GB free
Worst Bench: 57% 13GB free
Poor: 57% Great: 95%
SPEED RANK: 230th / 885
Effective Speed
Effective SSD Speed
98.7 % Faster effective speed.
+25%
78.9 %
Read
Avg. Sequential Read Speed
501 MB/s +3% 485 MB/s
Write
Avg. Sequential Write Speed
435 MB/s Much faster write speed.
+37%
318 MB/s
4K Read
Avg. 4K Random Read Speed
32.4 MB/s 35.8 MB/s Slightly faster random read.
+10%
4K Write
Avg. 4K Random Write Speed
87.1 MB/s Much faster random write.
+53%
57 MB/s
Mixed
Avg. Sequential Mixed IO Speed
457 MB/s Much faster mixed IO speed.
+40%
327 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
34.9 MB/s Much faster random mixed IO.
+68%
20.8 MB/s
Read
Peak Sequential Read Speed
528 MB/s +4% 510 MB/s
Write
Peak Sequential Write Speed
502 MB/s Much faster peak write speed.
+43%
351 MB/s
4K Read
Peak 4K Random Read Speed
43.3 MB/s 45.3 MB/s +5%
4K Write
Peak 4K Random Write Speed
121 MB/s Much faster peak random write.
+48%
81.9 MB/s
Mixed
Peak Sequential Mixed IO Speed
514 MB/s Much faster peak mixed IO speed.
+44%
357 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
51.7 MB/s Hugely faster peak random mixed IO.
+89%
27.4 MB/s
Market Share
Based on 5,630,997 SSDs tested.
Market Share
Market Share (trailing 30 days)
1.08 % 1.31 % Higher market share.
+21%
Value
Value For Money
72.6 % Much better value.
+35%
53.8 %
User Rating
UBM User Rating
99 % Much more popular.
+71%
58 %
Price
Price (score)
$146 Slightly cheaper.
+8%
$158
Age
Newest
43 Months More recent.
+22%
55 Months
DQ Read
Peak 4K-64Thread Read Speed
378 MB/s +5% 360 MB/s
DQ Write
Peak 4K-64Thread Write Speed
339 MB/s Much faster peak deep queue write.
+43%
237 MB/s
AS-SSD Total
AS-SSD Total Score
1,242 Pts Stronger server IO.
+18%
1,053 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
162 MB/s Hugely faster peak deep queue mixed IO.
+92%
84.4 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
209 MB/s Slightly faster deep queue read.
+11%
189 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
216 MB/s Much faster deep queue write.
+48%
146 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
89 MB/s Hugely faster deep queue mixed IO.
+81%
49.3 MB/s
Capacity
Capacity
256GB 250GB
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The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 SSDrivePro]

MORE DETAILS

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]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) February 2018 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]

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Group Test Results

  • Best user rated - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
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.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $87
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $146
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $200SanDisk Extreme 16GB $18
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