KingstonSA400S37/240G
CrucialCT250MX200SSD1
$134

Controller: Phison PS3111-S11. Flash Memory: Toshiba 15nm TLC. Release date: Q1 2017.

VS
About
 $134 

Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC. Release date: Q1 2015.

Real World Speed
Performance profile from 127,756 user samples
113,337 User Benchmarks
Best Bench: 92% 205GB free
Worst Bench: 33% 58GB free (System drive)
Poor: 33% Great: 92%
SPEED RANK: 723rd / 1017
14,419 User Benchmarks
Best Bench: 111% 141GB free
Worst Bench: 64% 87GB free (System drive)
Poor: 64% Great: 111%
SPEED RANK: 254th / 1017
Effective Speed
Effective SSD Speed
61.4 % 92.5 % Much faster effective speed.
+51%
Read
Avg. Sequential Read Speed
425 MB/s 426 MB/s +0%
Write
Avg. Sequential Write Speed
306 MB/s 408 MB/s Much faster write speed.
+33%
4K Read
Avg. 4K Random Read Speed
26.6 MB/s 27.3 MB/s +3%
4K Write
Avg. 4K Random Write Speed
51.8 MB/s 84.4 MB/s Much faster random write.
+63%
Mixed
Avg. Sequential Mixed IO Speed
246 MB/s 336 MB/s Much faster mixed IO speed.
+37%
4K Mixed
Avg. 4K Random Mixed IO Speed
19.6 MB/s 38.5 MB/s Hugely faster random mixed IO.
+96%
SusWrite
Avg. Sustained Write Speed
144 MB/s 336 MB/s Hugely faster sustained write speed.
+133%
Read
Peak Sequential Read Speed
508 MB/s Slightly faster peak read speed.
+8%
470 MB/s
Write
Peak Sequential Write Speed
451 MB/s 469 MB/s +4%
4K Read
Peak 4K Random Read Speed
35.5 MB/s Slightly faster peak random read.
+8%
32.9 MB/s
4K Write
Peak 4K Random Write Speed
102 MB/s 118 MB/s Faster peak random write.
+16%
Mixed
Peak Sequential Mixed IO Speed
422 MB/s Slightly faster peak mixed IO speed.
+11%
381 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
39.2 MB/s 48 MB/s Faster peak random mixed IO.
+22%
SusWrite
Peak Sequential Sustained Write 60s Average
384 MB/s 449 MB/s Faster peak sustained write speed.
+17%
Market Share
Based on 22,603,229 SSDs tested.
Market Share
Market Share (trailing 30 days)
2.61 % Insanely higher market share.
+2,800%
0.09 %
Value
Value For Money
18.2 % Hugely better value.
+89%
9.6 %
User Rating
UBM User Rating
61 % 66 % Slightly more popular.
+8%
Price
Price (score)
$32 Much cheaper.
+76%
$134
Age
Newest
37 Months Much more recent.
+39%
61 Months
DQ Read
Peak 4K-64Thread Read Speed
271 MB/s 379 MB/s Much faster peak deep queue read.
+40%
DQ Write
Peak 4K-64Thread Write Speed
340 MB/s 361 MB/s Slightly faster peak deep queue write.
+6%
AS-SSD Total
AS-SSD Total Score
1,038 Pts 1,231 Pts Stronger server IO.
+19%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
210 MB/s 258 MB/s Faster peak deep queue mixed IO.
+23%
ADQ Read
Avg. 4K-64Thread Read Speed
193 MB/s 301 MB/s Much faster deep queue read.
+56%
ADQ Write
Avg. 4K-64Thread Write Speed
197 MB/s 289 MB/s Much faster deep queue write.
+47%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
81.4 MB/s 209 MB/s Hugely faster deep queue mixed IO.
+157%
Capacity
Capacity
240GB 250GB
ADVERTISEMENT

could have used some DRAM, stutters when booting. [Dec '19 ExecutableFiles]

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) February 2020 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]

ADVERTISEMENT

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 i5-9400F $150Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $49
Intel Core i5-9600K $210Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $356Nvidia RTX 2060 $330Samsung 850 Pro 512GB $249
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $80SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $73SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $683SanDisk Extreme 16GB $24
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback