SanDiskSDSSDXPS-240G
SamsungMZ-7KE256BW

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

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

Real World Speed
Performance profile from 45,268 user samples
3,504 User Benchmarks
Best Bench: 108% 222GB free
Worst Bench: 66% 223GB free
Poor: 66% Great: 108%
SPEED RANK: 154th / 927
41,764 User Benchmarks
Best Bench: 121% 158GB free
Worst Bench: 68% 86GB free
Poor: 68% Great: 121%
SPEED RANK: 111th / 927
Effective Speed
Effective SSD Speed
88.4 % 97.6 % Slightly faster effective speed.
+10%
Read
Avg. Sequential Read Speed
492 MB/s 501 MB/s +2%
Write
Avg. Sequential Write Speed
435 MB/s 439 MB/s +1%
4K Read
Avg. 4K Random Read Speed
29 MB/s 32.3 MB/s Slightly faster random read.
+11%
4K Write
Avg. 4K Random Write Speed
78 MB/s 86.6 MB/s Slightly faster random write.
+11%
Mixed
Avg. Sequential Mixed IO Speed
435 MB/s 457 MB/s Slightly faster mixed IO speed.
+5%
4K Mixed
Avg. 4K Random Mixed IO Speed
22 MB/s 33.6 MB/s Much faster random mixed IO.
+53%
Read
Peak Sequential Read Speed
517 MB/s 528 MB/s +2%
Write
Peak Sequential Write Speed
498 MB/s 503 MB/s +1%
4K Read
Peak 4K Random Read Speed
35.6 MB/s 43.2 MB/s Faster peak random read.
+21%
4K Write
Peak 4K Random Write Speed
112 MB/s 121 MB/s Slightly faster peak random write.
+8%
Mixed
Peak Sequential Mixed IO Speed
488 MB/s 513 MB/s Slightly faster peak mixed IO speed.
+5%
4K Mixed
Peak 4K Random Mixed IO Speed
30 MB/s 50.5 MB/s Much faster peak random mixed IO.
+68%
Market Share
Based on 6,826,358 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.06 % 0.71 % Insanely higher market share.
+1,083%
Value
Value For Money
79.4 % Better value.
+20%
66.1 %
User Rating
UBM User Rating
64 % 99 % Much more popular.
+55%
Price
Price (score)
$105 Much cheaper.
+36%
$163
Age
Newest
47 Months 46 Months +2%
DQ Read
Peak 4K-64Thread Read Speed
367 MB/s 378 MB/s +3%
DQ Write
Peak 4K-64Thread Write Speed
324 MB/s 338 MB/s +4%
AS-SSD Total
AS-SSD Total Score
1,184 Pts 1,241 Pts +5%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.5 MB/s 162 MB/s Hugely faster peak deep queue mixed IO.
+147%
ADQ Read
Avg. 4K-64Thread Read Speed
181 MB/s 188 MB/s +4%
ADQ Write
Avg. 4K-64Thread Write Speed
207 MB/s 211 MB/s +2%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
43.3 MB/s 83.3 MB/s Hugely faster deep queue mixed IO.
+92%
Capacity
Capacity
240GB 256GB
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The 240GB Sandisk Extreme Pro uses the same controller and NAND as its 13 months younger predecessor, the Extreme II. Comparing the Extreme II and Extreme Pro shows that average performance has increased by 10% but peak performance remains broadly unchanged. The Pro features an improved nCache which uses an SLC buffer to cache writes prior to writing them to the slower MLC NAND. In order to benefit from this improved caching, huge amounts of data need to be written for extended periods, an unlikely consumer scenario. Comparing core performance between the Samsung 840 Evo and Extreme Pro shows that the Extreme Pro averages around 12% faster than the Evo. The Extreme Pro also has a 10 year warranty but I wonder if SATA 3 will even be around at that time. Although the Extreme Pro has a superb performance profile it's not a game changer. [Jun '14 SSDrivePro]

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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]

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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
Intel Core i7-8700K $320Nvidia GTX 1070 $447Samsung 850 Evo 250GB $95
AMD Ryzen 5 1600 $172Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $136
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 $961SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
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