SanDiskSDSSDXPS-240G
CrucialCT250BX100SSD1

Controller: Marvell 88SS9187-BLD2. Flash Memory: SanDisk 19nm eX2 ABL MLC. Release date: Q2 2014.

Controller: Silicon Motion SM2246EN. Flash Memory: Micron 16nm MLC. Release date: Q1 2015.

Real World Speed
Performance profile from 17,991 user samples
5,016 User Benchmarks
Best Bench: 115% 223GB free
Worst Bench: 58% 38GB free (System drive)
Poor: 58% Great: 115%
SPEED RANK: 196th / 959
12,975 User Benchmarks
Best Bench: 105% 142GB free
Worst Bench: 58% 204GB free (System drive)
Poor: 58% Great: 105%
SPEED RANK: 254th / 959
Effective Speed
Effective SSD Speed
90.7 % Slightly faster effective speed.
+5%
86.2 %
Read
Avg. Sequential Read Speed
453 MB/s 472 MB/s +4%
Write
Avg. Sequential Write Speed
406 MB/s Faster write speed.
+18%
344 MB/s
4K Read
Avg. 4K Random Read Speed
27.9 MB/s Slightly faster random read.
+6%
26.2 MB/s
4K Write
Avg. 4K Random Write Speed
75.6 MB/s 80 MB/s Slightly faster random write.
+6%
Mixed
Avg. Sequential Mixed IO Speed
258 MB/s 286 MB/s Slightly faster mixed IO speed.
+11%
4K Mixed
Avg. 4K Random Mixed IO Speed
32.9 MB/s 36.2 MB/s Slightly faster random mixed IO.
+10%
SusWrite
Avg. Sustained Write Speed
356 MB/s Much faster sustained write speed.
+33%
268 MB/s
Read
Peak Sequential Read Speed
510 MB/s 516 MB/s +1%
Write
Peak Sequential Write Speed
478 MB/s Faster peak write speed.
+29%
371 MB/s
4K Read
Peak 4K Random Read Speed
36.4 MB/s Faster peak random read.
+17%
31.1 MB/s
4K Write
Peak 4K Random Write Speed
118 MB/s +1% 117 MB/s
Mixed
Peak Sequential Mixed IO Speed
314 MB/s 337 MB/s Slightly faster peak mixed IO speed.
+7%
4K Mixed
Peak 4K Random Mixed IO Speed
43.3 MB/s 45.5 MB/s Slightly faster peak random mixed IO.
+5%
SusWrite
Peak Sequential Sustained Write 60s Average
469 MB/s Faster peak sustained write speed.
+29%
363 MB/s
Market Share
Based on 9,118,545 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.06 % 0.2 % Hugely higher market share.
+233%
Value
Value For Money
101 % Much better value.
+73%
58.2 %
User Rating
UBM User Rating
64 % +3% 62 %
Price
Price (score)
$79 Much cheaper.
+51%
$160
Age
Newest
52 Months 45 Months Slightly more recent.
+13%
DQ Read
Peak 4K-64Thread Read Speed
379 MB/s Much faster peak deep queue read.
+35%
281 MB/s
DQ Write
Peak 4K-64Thread Write Speed
340 MB/s Slightly faster peak deep queue write.
+6%
321 MB/s
AS-SSD Total
AS-SSD Total Score
1222 Pts Stronger server IO.
+19%
1,029 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
166 MB/s 198 MB/s Faster peak deep queue mixed IO.
+19%
ADQ Read
Avg. 4K-64Thread Read Speed
306 MB/s Faster deep queue read.
+23%
249 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
270 MB/s 274 MB/s +1%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
141 MB/s 164 MB/s Faster deep queue mixed IO.
+16%
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]

MORE DETAILS

The 250GB Crucial BX100 SSD is the value orientated variant of Crucial's M range of SSDs. The BX100 uses the same NAND as its premium MX200 sibling but the BX100 uses a Silicon Motion controller as opposed to the Marvel controller found in the MX range. Feature wise the BX100 is missing SLC caching and there is no hardware encryption (so security frameworks such as windows Bitlocker will operate less efficiently). In terms of I/O performance the BX100 looks promising. Comparing the BX100 and MX100 shows that the newer BX100 may be faster than its predecessor but as yet there are insufficient user benchmarks to draw any definitive conclusions. The BX100 has only just started hitting the shelves so there's plenty of room for price reductions from its already reasonable price tag. I will revisit this review when I have more performance data for the BX100. [Jan '15 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) October 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $370Nvidia GTX 1070 $350Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $249Samsung 850 Evo 500GB $98
Intel Core i7-7700K $355AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 64GB $42
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $869SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $157SanDisk Ultra Fit 32GB $12
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