SanDiskSDSSDXPS-240G
SamsungMZ-75E250B

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

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND

Real World Speed
Performance profile from 154,823 user samples
2,515 User Benchmarks
Best Bench: 106% 95GB free
Worst Bench: 63% 105GB free
Poor: 63% Great: 106%
SPEED RANK: 118th / 857
152,308 User Benchmarks
Best Bench: 116% 28GB free
Worst Bench: 71% 131GB free
Poor: 71% Great: 116%
SPEED RANK: 65th / 857
Effective Speed
Effective SSD Speed
85.5 % -11% 94.8 % Slightly faster effective speed.
+11%
Read
Avg. Sequential Read Speed
482 MB/s -3% 496 MB/s +3%
Write
Avg. Sequential Write Speed
417 MB/s Slightly faster write speed.
+6%
393 MB/s -6%
4K Read
Avg. 4K Random Read Speed
28.4 MB/s -35% 38.3 MB/s Much faster random read.
+35%
4K Write
Avg. 4K Random Write Speed
71.3 MB/s -8% 77.3 MB/s Slightly faster random write.
+8%
Mixed
Avg. Sequential Mixed IO Speed
413 MB/s +4% 396 MB/s -4%
4K Mixed
Avg. 4K Random Mixed IO Speed
22.5 MB/s -47% 33.1 MB/s Much faster random mixed IO.
+47%
Read
Peak Sequential Read Speed
515 MB/s -0% 517 MB/s +0%
Write
Peak Sequential Write Speed
494 MB/s Faster peak write speed.
+18%
417 MB/s -18%
4K Read
Peak 4K Random Read Speed
36.3 MB/s -31% 47.4 MB/s Much faster peak random read.
+31%
4K Write
Peak 4K Random Write Speed
117 MB/s Slightly faster peak random write.
+7%
109 MB/s -7%
Mixed
Peak Sequential Mixed IO Speed
485 MB/s Slightly faster peak mixed IO speed.
+15%
422 MB/s -15%
4K Mixed
Peak 4K Random Mixed IO Speed
29.8 MB/s -63% 48.5 MB/s Much faster peak random mixed IO.
+63%
Market Share
Based on 3,541,596 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.14 % -6,636% 9.43 % Insanely higher market share.
+6,636%
Value
Value For Money
76.8 % -28% 98.5 % Better value.
+28%
User Rating
UBM User Rating
64 % -78% 114 % Much more popular.
+78%
Price
Price (score)
$105 -14% $90 Slightly cheaper.
+14%
Age
Newest
38 Months -16% 32 Months More recent.
+16%
DQ Read
Peak 4K-64Thread Read Speed
364 MB/s -3% 376 MB/s +3%
DQ Write
Peak 4K-64Thread Write Speed
325 MB/s Faster peak deep queue write.
+15%
282 MB/s -15%
AS-SSD Total
AS-SSD Total Score
1,186 Pts +2% 1,164 Pts -2%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.6 MB/s -78% 117 MB/s Much faster peak deep queue mixed IO.
+78%
ADQ Read
Avg. 4K-64Thread Read Speed
195 MB/s +4% 187 MB/s -4%
ADQ Write
Avg. 4K-64Thread Write Speed
174 MB/s -6% 185 MB/s Slightly faster deep queue write.
+6%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
47.9 MB/s -39% 66.5 MB/s Much faster deep queue mixed IO.
+39%
Capacity
Capacity
240GB 250GB
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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 250GB Samsung 850 Evo has a similar architecture to its hugely successful predecessor, the 840 Evo. Both drives are TLC based but the 850 uses 3D V-NAND as opposed to regular NAND. Both drives also feature a Turbowrite cache (TWC) which buffers up to 3GB of writes. The TWC enables high burst write speeds but when the cache exhausts write speeds drop to 300 MB/s. Comparing the 850 and 840 Evos shows that effective speed, has improved by 11% and the warranty has been extended from three to five years but prices are also up by 11%. The 850 Evo does put in superb benchmarks (second only to the 850 Pro) but these are only valid within the TWC. At current price levels the 850 Evo struggles to compete with the value leaders[Dec '14 SSDrivePro]

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Solid State Drive Rankings (Price vs Performance) August 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

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 i7-7700K $300Nvidia GTX 1070 $367Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $280AMD RX 480 $390Samsung 850 Pro 256GB $120
Intel Core i5-7600K $212Nvidia GTX 1060-6GB $280Samsung 850 Evo 500GB $165
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $57HyperX Fury DDR4 2133 C14 2x8GB $140SanDisk Ultra Fit 32GB $13
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