SamsungMZ-75E250B
SanDiskSDSSDXPS-240G

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

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

Real World Speed
Performance profile from 213,242 user samples
209,182 User Benchmarks
Best Bench: 116% 203GB free
Worst Bench: 66% 215GB free
Poor: 66% Great: 116%
SPEED RANK: 68th / 873
4,060 User Benchmarks
Best Bench: 107% 200GB free
Worst Bench: 65% 77GB free
Poor: 65% Great: 107%
SPEED RANK: 115th / 873
Effective Speed
Effective SSD Speed
94.5 % Slightly faster effective speed.
+9%
86.8 % -9%
Read
Avg. Sequential Read Speed
496 MB/s +1% 492 MB/s -1%
Write
Avg. Sequential Write Speed
389 MB/s -8% 421 MB/s Slightly faster write speed.
+8%
4K Read
Avg. 4K Random Read Speed
37.8 MB/s Faster random read.
+28%
29.5 MB/s -28%
4K Write
Avg. 4K Random Write Speed
78 MB/s -3% 80.2 MB/s +3%
Mixed
Avg. Sequential Mixed IO Speed
395 MB/s -7% 422 MB/s Slightly faster mixed IO speed.
+7%
4K Mixed
Avg. 4K Random Mixed IO Speed
32.9 MB/s Much faster random mixed IO.
+57%
21 MB/s -57%
Read
Peak Sequential Read Speed
518 MB/s +0% 516 MB/s -0%
Write
Peak Sequential Write Speed
417 MB/s -18% 493 MB/s Faster peak write speed.
+18%
4K Read
Peak 4K Random Read Speed
47.3 MB/s Much faster peak random read.
+31%
36 MB/s -31%
4K Write
Peak 4K Random Write Speed
109 MB/s -7% 117 MB/s Slightly faster peak random write.
+7%
Mixed
Peak Sequential Mixed IO Speed
423 MB/s -15% 486 MB/s Slightly faster peak mixed IO speed.
+15%
4K Mixed
Peak 4K Random Mixed IO Speed
48.6 MB/s Much faster peak random mixed IO.
+66%
29.2 MB/s -66%
Market Share
Based on 4,776,024 SSDs tested.
Market Share
Market Share (trailing 30 days)
8.79 % Insanely higher market share.
+6,662%
0.13 % -6,662%
Value
Value For Money
103 % Much better value.
+32%
77.9 % -32%
User Rating
UBM User Rating
126 % Hugely more popular.
+94%
65 % -94%
Price
Price (score)
$85 Cheaper.
+19%
$105 -19%
Age
Newest
36 Months Slightly more recent.
+14%
42 Months -14%
DQ Read
Peak 4K-64Thread Read Speed
379 MB/s +4% 364 MB/s -4%
DQ Write
Peak 4K-64Thread Write Speed
284 MB/s -15% 326 MB/s Slightly faster peak deep queue write.
+15%
AS-SSD Total
AS-SSD Total Score
1,170 Pts -1% 1,187 Pts +1%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
122 MB/s Hugely faster peak deep queue mixed IO.
+87%
65.4 MB/s -87%
ADQ Read
Avg. 4K-64Thread Read Speed
196 MB/s Faster deep queue read.
+18%
166 MB/s -18%
ADQ Write
Avg. 4K-64Thread Write Speed
183 MB/s -2% 187 MB/s +2%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
64.4 MB/s Much faster deep queue mixed IO.
+72%
37.5 MB/s -72%
Capacity
Capacity
250GB 240GB
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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]

MORE DETAILS

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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Solid State Drive Rankings (Price vs Performance) December 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 $280Nvidia GTX 1070 $410Samsung 850 Evo 250GB $85
AMD Ryzen 7 1700 $245AMD RX 480 $265Samsung 850 Pro 256GB $110
Intel Core i5-7600K $210Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $140
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $215SanDisk Ultra Fit 32GB $10
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