SamsungMZ-7KE256BW
SanDiskSDSSDXP-240G-G25

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

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC.

Real World Speed
Performance profile from 42,860 user samples
41,764 User Benchmarks
Best Bench: 121% 158GB free
Worst Bench: 68% 86GB free
Poor: 68% Great: 121%
SPEED RANK: 110th / 927
1,096 User Benchmarks
Best Bench: 100% 93GB free
Worst Bench: 57% 65GB free
Poor: 57% Great: 100%
SPEED RANK: 235th / 927
Effective Speed
Effective SSD Speed
97.6 % Faster effective speed.
+20%
81.4 %
Read
Avg. Sequential Read Speed
501 MB/s Slightly faster read speed.
+10%
454 MB/s
Write
Avg. Sequential Write Speed
439 MB/s Faster write speed.
+17%
376 MB/s
4K Read
Avg. 4K Random Read Speed
32.3 MB/s Faster random read.
+19%
27.1 MB/s
4K Write
Avg. 4K Random Write Speed
86.6 MB/s Slightly faster random write.
+13%
76.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed
457 MB/s Faster mixed IO speed.
+23%
371 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
33.6 MB/s Much faster random mixed IO.
+62%
20.7 MB/s
Read
Peak Sequential Read Speed
528 MB/s Slightly faster peak read speed.
+8%
490 MB/s
Write
Peak Sequential Write Speed
503 MB/s +5% 480 MB/s
4K Read
Peak 4K Random Read Speed
43.2 MB/s Faster peak random read.
+24%
34.8 MB/s
4K Write
Peak 4K Random Write Speed
121 MB/s +3% 117 MB/s
Mixed
Peak Sequential Mixed IO Speed
513 MB/s Slightly faster peak mixed IO speed.
+13%
455 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
50.5 MB/s Much faster peak random mixed IO.
+77%
28.5 MB/s
Market Share
Based on 6,800,131 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.7 % Insanely higher market share.
+2,233%
0.03 %
Value
Value For Money
66.1 % Better value.
+18%
56.2 %
User Rating
UBM User Rating
99 % Much more popular.
+57%
63 %
Price
Price (score)
$163 $149 Slightly cheaper.
+9%
Age
Newest
46 Months More recent.
+23%
60 Months
DQ Read
Peak 4K-64Thread Read Speed
378 MB/s Slightly faster peak deep queue read.
+7%
352 MB/s
DQ Write
Peak 4K-64Thread Write Speed
338 MB/s Slightly faster peak deep queue write.
+13%
299 MB/s
AS-SSD Total
AS-SSD Total Score
1,241 Pts Slightly stronger server IO.
+9%
1,135 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
162 MB/s Hugely faster peak deep queue mixed IO.
+140%
67.6 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
188 MB/s +4% 180 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
211 MB/s Slightly faster deep queue write.
+7%
197 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
83.3 MB/s Hugely faster deep queue mixed IO.
+90%
43.9 MB/s
Capacity
Capacity
256GB 240GB
ADVERTISEMENT

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 Sandisk Extreme II uses the 88SS9187-BLD2 controller, Marvel's latest, and Sandisk's own 19MM MLC Memory. On paper this makes an extremely good combination and the benchmarks agree. The Extreme II scored an impressive 1143 in the server orientated AS SSD Benchmark putting it amongst the more capable server drives. In terms of real world consumer performance the Extreme II also fared well achieving a real world speed index score of 570.5 MB/s, amongst the top three scores we have seen to date. The Extreme II has everything going for it apart from its price which is currently significantly above average and hurting its value rating. Because the Extreme is the newest SSD we have in our group test we expect prices will drop with time. Until then, however, there is better value to be had elsewhere. [Jun '13 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) May 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
AMD Ryzen 5 1600 $167Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
Intel Core i7-8700K $320Nvidia GTX 1060-6GB $292Samsung 850 Evo 500GB $140
Intel Core i7-7700K $285AMD RX 480 $300Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $960SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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