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SamsungMZ-7PD256BW
CrucialCT256MX100SSD1
$116
▲ 6420,537 ▼

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC.

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▲ 649,915 ▼
 $116 

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

Effective Speed 
+4%
Real World Speed
Performance profile from 29,999 user samples
Benchmark your SSD here
16,608 User Benchmarks
Best Bench: 107% 24GB free
Worst Bench: 55% 132GB free
Poor: 55% Great: 107%
SPEED RANK: 138th / 859
13,391 User Benchmarks
Best Bench: 95% 105GB free
Worst Bench: 60% 170GB free
Poor: 60% Great: 95%
SPEED RANK: 194th / 859
Effective Speed
Effective SSD Speed 		83.6 % +4% 80.4 % -4%
Average User Bench 
+2%
Read
Avg. Sequential Read Speed 		488 MB/s -1% 492 MB/s +1%
Write
Avg. Sequential Write Speed 		359 MB/s Slightly faster write speed.
+12% 		321 MB/s -12%
4K Read
Avg. 4K Random Read Speed 		28.8 MB/s Slightly faster random read.
+13% 		25.5 MB/s -13%
4K Write
Avg. 4K Random Write Speed 		78.5 MB/s -5% 82.4 MB/s +5%
Mixed
Avg. Sequential Mixed IO Speed 		390 MB/s Slightly faster mixed IO speed.
+7% 		366 MB/s -7%
4K Mixed
Avg. 4K Random Mixed IO Speed 		22.1 MB/s -12% 24.7 MB/s Slightly faster random mixed IO.
+12%
Peak Lab Bench 
+12%
Read
Peak Sequential Read Speed 		524 MB/s +0% 523 MB/s -0%
Write
Peak Sequential Write Speed 		493 MB/s Much faster peak write speed.
+48% 		332 MB/s -48%
4K Read
Peak 4K Random Read Speed 		36.4 MB/s Faster peak random read.
+17% 		31.1 MB/s -17%
4K Write
Peak 4K Random Write Speed 		117 MB/s -3% 121 MB/s +3%
Mixed
Peak Sequential Mixed IO Speed 		509 MB/s Faster peak mixed IO speed.
+28% 		397 MB/s -28%
4K Mixed
Peak 4K Random Mixed IO Speed 		28.6 MB/s -17% 33.4 MB/s Faster peak random mixed IO.
+17%
Value & Sentiment 
+20%
Market Share
Based on 3,843,988 SSDs tested.
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.77 % Much higher market share.
+31% 		0.59 % -31%
Value
Value For Money 		44.1 % -60% 70.3 % Much better value.
+60%
User Rating
UBM User Rating 		64 % 0% 64 % 0%
Price
Price (score) 		$228 -49% $116 Much cheaper.
+49%
Nice To Haves 
+33%
Age
Newest 		59 Months -34% 39 Months Much more recent.
+34%
DQ Read
Peak 4K-64Thread Read Speed 		373 MB/s Much faster peak deep queue read.
+73% 		216 MB/s -73%
DQ Write
Peak 4K-64Thread Write Speed 		319 MB/s +4% 306 MB/s -4%
AS-SSD Total
AS-SSD Total Score 		1,195 Pts Much stronger server IO.
+31% 		915 Pts -31%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		89.8 MB/s Much faster peak deep queue mixed IO.
+74% 		51.7 MB/s -74%
ADQ Read
Avg. 4K-64Thread Read Speed 		199 MB/s Much faster deep queue read.
+66% 		120 MB/s -66%
ADQ Write
Avg. 4K-64Thread Write Speed 		188 MB/s -4% 195 MB/s +4%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		53.9 MB/s Much faster deep queue mixed IO.
+54% 		35.1 MB/s -54%
Specifications 
Capacity
Capacity 		256GB 256GB
Conclusion 
Average Bench 83.7%
Average Bench 80.4%
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The 840 Pro is stunning. Samsung have created a completely in-house package including both the controller and their own new 21nm toggle mode NAND. On release (Oct '12) this was the fastest performing deep queue depth consumer grade SSD available. Fast forward six months (Apr '13) and the 840 Pro still holds both the random read/write deep queue depth speed records of 384 MB/s and 326 MB/s, impressive considering how fast the SSD space tends to move. There are no obvious weaknesses, in-fact the 840 pro takes first place in nearly all of the speed categories and is only seriously rivalled by one drive, the OCZ Vector. To conclude, in terms of both outright performance, particularly server orientated, and value for money the 256GB and 128GB 840 Pros are amongst the top handful of drives currently available. [Jun '13 SSDrivePro]

MORE DETAILS

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

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Solid State Drive Rankings (Price vs Performance) September 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]

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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.

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  • - Reports are generated and presented on userbenchmark.com.
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Solid State Drives
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