CrucialCT256MX100SSD1
$116
CrucialCT256M550SSD1
$152
 $116 

Controller: Marvell 88SS9189. Flash Memory: Micron 16nm MLC. Release date: Q2 2014.

 $152 

Controller: Marvell 88SS9189. Flash Memory: Micron Synchronous 20nm MLC. Release date: Q1 2014.

Real World Speed
Performance profile from 64,101 user samples
55,768 User Benchmarks
Best Bench: 97% 123GB free
Worst Bench: 65% 74GB free
Poor: 65% Great: 97%
SPEED RANK: 451st / 1080
8,333 User Benchmarks
Best Bench: 113% 106GB free
Worst Bench: 60% 231GB free
Poor: 60% Great: 113%
SPEED RANK: 328th / 1080
Effective Speed
Effective SSD Speed
82.8 % 90.5 % Slightly faster effective speed.
+9%
Read
Avg. Sequential Read Speed
417 MB/s 418 MB/s +0%
Write
Avg. Sequential Write Speed
318 MB/s 416 MB/s Much faster write speed.
+31%
4K Read
Avg. 4K Random Read Speed
26.7 MB/s 27.1 MB/s +1%
4K Write
Avg. 4K Random Write Speed
88.7 MB/s +4% 85 MB/s
Mixed
Avg. Sequential Mixed IO Speed
289 MB/s 299 MB/s +3%
4K Mixed
Avg. 4K Random Mixed IO Speed
37.4 MB/s 37.9 MB/s +1%
SusWrite
Avg. Sustained Write Speed
231 MB/s 311 MB/s Much faster sustained write speed.
+35%
Read
Peak Sequential Read Speed
455 MB/s 466 MB/s +2%
Write
Peak Sequential Write Speed
331 MB/s 470 MB/s Much faster peak write speed.
+42%
4K Read
Peak 4K Random Read Speed
30.5 MB/s 31.9 MB/s +5%
4K Write
Peak 4K Random Write Speed
118 MB/s 118 MB/s
Mixed
Peak Sequential Mixed IO Speed
316 MB/s 333 MB/s Slightly faster peak mixed IO speed.
+5%
4K Mixed
Peak 4K Random Mixed IO Speed
44.2 MB/s 46.4 MB/s +5%
SusWrite
Peak Sequential Sustained Write 60s Average
329 MB/s 459 MB/s Much faster peak sustained write speed.
+40%
Market Share
Based on 76,492,000 SSDs tested
Market Share
Market Share (trailing 30 days)
0.02 % Hugely higher market share.
+100%
0.01 %
Value
Value For Money
9.75 % Better value.
+12%
8.68 %
User Rating
UBM User Rating
54 % +4% 52 %
Price
Price (score)
$116 Cheaper.
+24%
$152
Age
Newest
121 Months +2% 124 Months
DQ Read
Peak 4K-64Thread Read Speed
229 MB/s 387 MB/s Much faster peak deep queue read.
+69%
DQ Write
Peak 4K-64Thread Write Speed
312 MB/s 361 MB/s Faster peak deep queue write.
+16%
AS-SSD Total
AS-SSD Total Score
930 Pts 1,240 Pts Much stronger server IO.
+33%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
182 MB/s 240 MB/s Much faster peak deep queue mixed IO.
+32%
ADQ Read
Avg. 4K-64Thread Read Speed
182 MB/s 311 MB/s Much faster deep queue read.
+71%
ADQ Write
Avg. 4K-64Thread Write Speed
280 MB/s 282 MB/s +1%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
144 MB/s 201 MB/s Much faster deep queue mixed IO.
+40%
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) July 2024 SSD Rankings

Welcome to our 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.
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The Best
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