CrucialCT256MX100SSD1
$116
CrucialCT256M550SSD1
$152
 $116 

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

 $152 

Controller: Marvell 88SS9189. Flash Memory: Micron Synchronous 20nm MLC.

Real World Speed
Performance profile from 22,069 user samples
17,933 User Benchmarks
Best Bench: 98% 88GB free (System drive)
Worst Bench: 59% 19GB free (System drive)
Poor: 59% Great: 98%
SPEED RANK: 265th / 955
4,136 User Benchmarks
Best Bench: 110% 119GB free
Worst Bench: 66% 38GB free (System drive)
Poor: 66% Great: 110%
SPEED RANK: 169th / 955
Effective Speed
Effective SSD Speed
82.4 % 91.3 % Slightly faster effective speed.
+11%
Read
Avg. Sequential Read Speed
409 MB/s 490 MB/s Faster read speed.
+20%
Write
Avg. Sequential Write Speed
318 MB/s 448 MB/s Much faster write speed.
+41%
4K Read
Avg. 4K Random Read Speed
26.5 MB/s +2% 26.1 MB/s
4K Write
Avg. 4K Random Write Speed
93 MB/s Slightly faster random write.
+12%
82.7 MB/s
Mixed
Avg. Sequential Mixed IO Speed
285 MB/s 434 MB/s Much faster mixed IO speed.
+52%
4K Mixed
Avg. 4K Random Mixed IO Speed
37.5 MB/s Much faster random mixed IO.
+33%
28.2 MB/s
SusWrite
Avg. Sustained Write Speed
221 MB/s 297 MB/s Much faster sustained write speed.
+34%
Read
Peak Sequential Read Speed
453 MB/s 524 MB/s Faster peak read speed.
+16%
Write
Peak Sequential Write Speed
332 MB/s 482 MB/s Much faster peak write speed.
+45%
4K Read
Peak 4K Random Read Speed
31.1 MB/s 31.7 MB/s +2%
4K Write
Peak 4K Random Write Speed
124 MB/s Slightly faster peak random write.
+7%
116 MB/s
Mixed
Peak Sequential Mixed IO Speed
316 MB/s 492 MB/s Much faster peak mixed IO speed.
+56%
4K Mixed
Peak 4K Random Mixed IO Speed
44.7 MB/s Slightly faster peak random mixed IO.
+10%
40.5 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average
329 MB/s 446 MB/s Much faster peak sustained write speed.
+36%
Market Share
Based on 7,606,724 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.33 % Insanely higher market share.
+1,550%
0.02 %
Value
Value For Money
72.1 % Slightly better value.
+11%
65.1 %
User Rating
UBM User Rating
64 % Slightly more popular.
+14%
56 %
Price
Price (score)
$116 Cheaper.
+24%
$152
Age
Newest
49 Months Slightly more recent.
+6%
52 Months
DQ Read
Peak 4K-64Thread Read Speed
249 MB/s 372 MB/s Much faster peak deep queue read.
+49%
DQ Write
Peak 4K-64Thread Write Speed
313 MB/s 338 MB/s Slightly faster peak deep queue write.
+8%
AS-SSD Total
AS-SSD Total Score
968 Pts 1,200 Pts Stronger server IO.
+24%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
182 MB/s 235 MB/s Faster peak deep queue mixed IO.
+29%
ADQ Read
Avg. 4K-64Thread Read Speed
178 MB/s 195 MB/s Slightly faster deep queue read.
+10%
ADQ Write
Avg. 4K-64Thread Write Speed
279 MB/s Much faster deep queue write.
+33%
209 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
136 MB/s Hugely faster deep queue mixed IO.
+110%
64.9 MB/s
Capacity
Capacity
256GB 256GB
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The Crucial MX100 is the first 16nm SSD to date. Aside from NAND, the MX100 shares the same hardware as its more expensive sibling, the M550. Comparing the MX100 and M550 shows that the two drives have similar read speeds but that the MX100 lags by nearly 50% at writing. The newer 16nm NAND reduces costs and accordingly the MX100 is the cheapest SSD (per GB) to date. In terms of performance the MX100 is a compromise which may or may not be worth making depending on individual circumstances. For typical desktop use including email, office documents and web browsing the MX100 is a great choice but power users should look elsewhere. Comparing the 250GB 840 EVO and 256GB MX100 shows that for a marginal premium, the Evo offers better write speeds. (Note: at 500GB they are more evenly matched) [Jun '14 SSDrivePro]

MORE DETAILS

The 256GB Crucial M550 is a welcome improvement over the 240GB M500. The new Marvel 88SS9189 controller has addressed our primary concern with the M500 which was poor sequential write speed. With sequential read/write speeds of 510/478 MB/s the M550 has a healthy core performance profile. Comparing the M550 and M500 shows that the new M550 leads on nearly every single performance metric. Unfortunately the M550 is priced significantly higher than the M500 but prices will likely drop as retailers build up stocks of the new M550. A key comparable for the M550 is the similarly priced market leading Samsung Evo. Comparing the Evo and M550 shows that the Evo is around 11% slower in terms of effective speed[Mar '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) July 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 $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $120
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $136
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $160SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $945SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $55HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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