SanDiskSDSSDXPS-240G
CrucialCT250MX200SSD1

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

Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC.

Real World Speed
Performance profile from 7,363 user samples
2,517 User Benchmarks
Best Bench: 108% 166GB free
Worst Bench: 65% 105GB free
Poor: 65% Great: 108%
SPEED RANK: 105th / 859
4,846 User Benchmarks
Best Bench: 102% 66GB free
Worst Bench: 57% 22GB free
Poor: 57% Great: 102%
SPEED RANK: 153rd / 859
Effective Speed
Effective SSD Speed
87.4 % Slightly faster effective speed.
+5%
83 % -5%
Read
Avg. Sequential Read Speed
487 MB/s -3% 500 MB/s +3%
Write
Avg. Sequential Write Speed
423 MB/s Faster write speed.
+17%
362 MB/s -17%
4K Read
Avg. 4K Random Read Speed
28.5 MB/s Slightly faster random read.
+7%
26.7 MB/s -7%
4K Write
Avg. 4K Random Write Speed
74.1 MB/s +4% 71.5 MB/s -4%
Mixed
Avg. Sequential Mixed IO Speed
413 MB/s Slightly faster mixed IO speed.
+12%
369 MB/s -12%
4K Mixed
Avg. 4K Random Mixed IO Speed
22.6 MB/s -7% 24.2 MB/s Slightly faster random mixed IO.
+7%
Read
Peak Sequential Read Speed
516 MB/s -2% 527 MB/s +2%
Write
Peak Sequential Write Speed
494 MB/s Faster peak write speed.
+24%
399 MB/s -24%
4K Read
Peak 4K Random Read Speed
36.2 MB/s Slightly faster peak random read.
+10%
33 MB/s -10%
4K Write
Peak 4K Random Write Speed
115 MB/s Slightly faster peak random write.
+12%
103 MB/s -12%
Mixed
Peak Sequential Mixed IO Speed
486 MB/s Faster peak mixed IO speed.
+17%
416 MB/s -17%
4K Mixed
Peak 4K Random Mixed IO Speed
29.8 MB/s -15% 34.4 MB/s Faster peak random mixed IO.
+15%
Market Share
Based on 3,862,640 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.15 % -100% 0.3 % Hugely higher market share.
+100%
Value
Value For Money
78.5 % Much better value.
+37%
57.1 % -37%
User Rating
UBM User Rating
64 % -5% 67 % +5%
Price
Price (score)
$105 Much cheaper.
+33%
$156 -33%
Age
Newest
39 Months -18% 32 Months More recent.
+18%
DQ Read
Peak 4K-64Thread Read Speed
368 MB/s +3% 358 MB/s -3%
DQ Write
Peak 4K-64Thread Write Speed
326 MB/s Faster peak deep queue write.
+17%
278 MB/s -17%
AS-SSD Total
AS-SSD Total Score
1,191 Pts Slightly stronger server IO.
+9%
1,097 Pts -9%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
65.7 MB/s -2% 66.8 MB/s +2%
ADQ Read
Avg. 4K-64Thread Read Speed
212 MB/s Slightly faster deep queue read.
+13%
187 MB/s -13%
ADQ Write
Avg. 4K-64Thread Write Speed
194 MB/s Slightly faster deep queue write.
+9%
178 MB/s -9%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
47.6 MB/s Slightly faster deep queue mixed IO.
+13%
42.1 MB/s -13%
Capacity
Capacity
240GB 250GB
ADVERTISEMENT

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 MX200 is successor to the hugely successful MX100. Both drives use the same NAND and controller but the new MX200 features Dynamic Write Acceleration (DWA) which is a new dynamically sized SLC cache. Samsung were the first to introduce SLC caching on the 840 Evo nearly two years ago so Crucial are somewhat late to the party. SLC caches generally only help performance in corner case real word scenarios and benchmarks. I prefer drives without SLC caches because they offer more consistent and sustainable real world IO. Comparing the MX100 and MX200 shows that the newer MX200 has a significantly faster peak write speed which is of course explained by the new DWA cache. Price is the deciding factor between the MX100 and MX200 so although the MX200 isn't priced aggressively yet, it will almost certainly move up the value rankings when retailers build stocks and subsequently cut prices. [Feb '15 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) September 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 $295Nvidia GTX 1070 $410Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $210Nvidia GTX 1060-6GB $263Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $56HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
Today's hottest deals
User Guide  •  About  •  FAQs  •  @Email  •  Privacy  •  Developer Feedback