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 16,352 user samples
13,423 User Benchmarks
Best Bench: 95% 233GB free
Worst Bench: 60% 52GB free
Poor: 60% Great: 95%
SPEED RANK: 182nd / 862
2,929 User Benchmarks
Best Bench: 111% 164GB free
Worst Bench: 65% 79GB free
Poor: 65% Great: 111%
SPEED RANK: 73rd / 862
Effective Speed
Effective SSD Speed
81.4 % -14% 92.9 % Slightly faster effective speed.
+14%
Read
Avg. Sequential Read Speed
496 MB/s -1% 501 MB/s +1%
Write
Avg. Sequential Write Speed
323 MB/s -41% 454 MB/s Much faster write speed.
+41%
4K Read
Avg. 4K Random Read Speed
25.5 MB/s -4% 26.4 MB/s +4%
4K Write
Avg. 4K Random Write Speed
86 MB/s +1% 85.3 MB/s -1%
Mixed
Avg. Sequential Mixed IO Speed
369 MB/s -24% 456 MB/s Faster mixed IO speed.
+24%
4K Mixed
Avg. 4K Random Mixed IO Speed
24.6 MB/s -12% 27.5 MB/s Slightly faster random mixed IO.
+12%
Read
Peak Sequential Read Speed
522 MB/s -1% 525 MB/s +1%
Write
Peak Sequential Write Speed
332 MB/s -45% 482 MB/s Much faster peak write speed.
+45%
4K Read
Peak 4K Random Read Speed
31.2 MB/s -2% 31.8 MB/s +2%
4K Write
Peak 4K Random Write Speed
123 MB/s +2% 121 MB/s -2%
Mixed
Peak Sequential Mixed IO Speed
396 MB/s -25% 494 MB/s Faster peak mixed IO speed.
+25%
4K Mixed
Peak 4K Random Mixed IO Speed
33.5 MB/s -14% 38.1 MB/s Slightly faster peak random mixed IO.
+14%
Market Share
Based on 4,430,761 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.53 % Hugely higher market share.
+562%
0.08 % -562%
Value
Value For Money
71.2 % Slightly better value.
+7%
66.3 % -7%
User Rating
UBM User Rating
64 % More popular.
+16%
55 % -16%
Price
Price (score)
$116 Cheaper.
+24%
$152 -24%
Age
Newest
41 Months Slightly more recent.
+7%
44 Months -7%
DQ Read
Peak 4K-64Thread Read Speed
209 MB/s -77% 370 MB/s Much faster peak deep queue read.
+77%
DQ Write
Peak 4K-64Thread Write Speed
304 MB/s -10% 334 MB/s Slightly faster peak deep queue write.
+10%
AS-SSD Total
AS-SSD Total Score
905 Pts -32% 1,198 Pts Much stronger server IO.
+32%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
52.2 MB/s -49% 77.7 MB/s Much faster peak deep queue mixed IO.
+49%
ADQ Read
Avg. 4K-64Thread Read Speed
119 MB/s -58% 188 MB/s Much faster deep queue read.
+58%
ADQ Write
Avg. 4K-64Thread Write Speed
207 MB/s -2% 211 MB/s +2%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
35.3 MB/s -37% 48.3 MB/s Much faster deep queue mixed IO.
+37%
Capacity
Capacity
256GB 256GB
ADVERTISEMENT

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) 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 $285AMD 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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