SanDiskSDSSDHII-240G-G25
CrucialCT250MX200SSD1

Controller: Marvell 88SS9187. Memory: SanDisk 19nm TLC.

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

Real World Speed
Performance profile from 17,094 user samples
11,036 User Benchmarks
Best Bench: 82% 50GB free
Worst Bench: 48% 34GB free
Poor: 48% Great: 82%
SPEED RANK: 412th / 862
6,058 User Benchmarks
Best Bench: 100% 47GB free
Worst Bench: 59% 97GB free
Poor: 59% Great: 100%
SPEED RANK: 159th / 862
Effective Speed
Effective SSD Speed
65.7 % -26% 82.7 % Faster effective speed.
+26%
Read
Avg. Sequential Read Speed
452 MB/s -11% 503 MB/s Slightly faster read speed.
+11%
Write
Avg. Sequential Write Speed
249 MB/s -47% 365 MB/s Much faster write speed.
+47%
4K Read
Avg. 4K Random Read Speed
27.6 MB/s +3% 26.9 MB/s -3%
4K Write
Avg. 4K Random Write Speed
51.5 MB/s -37% 70.5 MB/s Much faster random write.
+37%
Mixed
Avg. Sequential Mixed IO Speed
242 MB/s -55% 376 MB/s Much faster mixed IO speed.
+55%
4K Mixed
Avg. 4K Random Mixed IO Speed
14.7 MB/s -61% 23.7 MB/s Much faster random mixed IO.
+61%
Read
Peak Sequential Read Speed
499 MB/s -6% 527 MB/s Slightly faster peak read speed.
+6%
Write
Peak Sequential Write Speed
337 MB/s -18% 399 MB/s Faster peak write speed.
+18%
4K Read
Peak 4K Random Read Speed
35.9 MB/s Slightly faster peak random read.
+9%
32.9 MB/s -9%
4K Write
Peak 4K Random Write Speed
79.7 MB/s -25% 100 MB/s Faster peak random write.
+25%
Mixed
Peak Sequential Mixed IO Speed
325 MB/s -28% 415 MB/s Faster peak mixed IO speed.
+28%
4K Mixed
Peak 4K Random Mixed IO Speed
21 MB/s -62% 34.1 MB/s Much faster peak random mixed IO.
+62%
Market Share
Based on 4,432,791 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.49 % Hugely higher market share.
+104%
0.24 % -104%
Value
Value For Money
67 % Much better value.
+68%
39.9 % -68%
User Rating
UBM User Rating
63 % -8% 68 % Slightly more popular.
+8%
Price
Price (score)
$88 Much cheaper.
+65%
$250 -65%
Age
Newest
38 Months -11% 34 Months Slightly more recent.
+11%
DQ Read
Peak 4K-64Thread Read Speed
352 MB/s -1% 357 MB/s +1%
DQ Write
Peak 4K-64Thread Write Speed
208 MB/s -32% 275 MB/s Much faster peak deep queue write.
+32%
AS-SSD Total
AS-SSD Total Score
988 Pts -10% 1,089 Pts Slightly stronger server IO.
+10%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
51.3 MB/s -30% 66.7 MB/s Much faster peak deep queue mixed IO.
+30%
ADQ Read
Avg. 4K-64Thread Read Speed
171 MB/s -4% 177 MB/s +4%
ADQ Write
Avg. 4K-64Thread Write Speed
134 MB/s -29% 173 MB/s Faster deep queue write.
+29%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
30.9 MB/s -33% 41 MB/s Much faster deep queue mixed IO.
+33%
Capacity
Capacity
240GB 250GB
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The Sandisk Ultra II sits above Sandisk's Ultra Plus and below their Extreme Pro. The Ultra Plus would probably have been phased out completely were it not for its continued success within budget space. The Ultra II is the first Sandisk drive to utilize cheaper (and slower) TLC NAND. Similarly to the Extreme Pro, the Ultra II utilizes an nCache which operates a portion of the NAND in simulated SLC mode. This strategy also matches the one employed by Samsung's now 14 months old Evo. Comparing the Ultra II and Evo shows broad performance equivalence which given the Ultra II's 15% price discount makes it the better choice today. That said it's probably worth waiting for the release of the 850 Evo which will pack another 14 months of Samsung's market leading R&D and will probably steal the show. [Sep '14 SSDrivePro]

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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) November 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 $288Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $270AMD RX 480 $240Samsung 850 Pro 256GB $110
Intel Core i5-7600K $200Nvidia GTX 1060-6GB $260Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $189SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $1,050SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $55Corsair Vengeance LPX DDR4 3200 C16 2x8GB $195SanDisk Ultra Fit 32GB $12
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