CrucialCT275MX300SSD1
SamsungMZ-7PD256BW

Controller: Marvell 88SS1074. Flash Memory: Micron 3D TLC.

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

Real World Speed
Performance profile from 24,091 user samples
7,483 User Benchmarks
Best Bench: 81% 118GB free
Worst Bench: 51% 179GB free
Poor: 51% Great: 81%
SPEED RANK: 347th / 859
16,608 User Benchmarks
Best Bench: 107% 24GB free
Worst Bench: 55% 132GB free
Poor: 55% Great: 107%
SPEED RANK: 138th / 859
Effective Speed
Effective SSD Speed
68.4 % -22% 83.6 % Faster effective speed.
+22%
Read
Avg. Sequential Read Speed
464 MB/s -5% 488 MB/s Slightly faster read speed.
+5%
Write
Avg. Sequential Write Speed
298 MB/s -20% 359 MB/s Faster write speed.
+20%
4K Read
Avg. 4K Random Read Speed
22.5 MB/s -28% 28.8 MB/s Faster random read.
+28%
4K Write
Avg. 4K Random Write Speed
58.5 MB/s -34% 78.5 MB/s Much faster random write.
+34%
Mixed
Avg. Sequential Mixed IO Speed
308 MB/s -27% 390 MB/s Faster mixed IO speed.
+27%
4K Mixed
Avg. 4K Random Mixed IO Speed
17 MB/s -30% 22.1 MB/s Much faster random mixed IO.
+30%
Read
Peak Sequential Read Speed
484 MB/s -8% 524 MB/s Slightly faster peak read speed.
+8%
Write
Peak Sequential Write Speed
338 MB/s -46% 493 MB/s Much faster peak write speed.
+46%
4K Read
Peak 4K Random Read Speed
27.5 MB/s -32% 36.4 MB/s Much faster peak random read.
+32%
4K Write
Peak 4K Random Write Speed
81.7 MB/s -43% 117 MB/s Much faster peak random write.
+43%
Mixed
Peak Sequential Mixed IO Speed
339 MB/s -50% 509 MB/s Much faster peak mixed IO speed.
+50%
4K Mixed
Peak 4K Random Mixed IO Speed
24.3 MB/s -18% 28.6 MB/s Faster peak random mixed IO.
+18%
Market Share
Based on 3,837,917 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.73 % -10% 0.8 % Slightly higher market share.
+10%
Value
Value For Money
74.5 % Much better value.
+69%
44.1 % -69%
User Rating
UBM User Rating
65 % +2% 64 % -2%
Price
Price (score)
$93 Much cheaper.
+59%
$228 -59%
Age
Newest
15 Months Much more recent.
+75%
59 Months -75%
DQ Read
Peak 4K-64Thread Read Speed
230 MB/s -62% 373 MB/s Much faster peak deep queue read.
+62%
DQ Write
Peak 4K-64Thread Write Speed
221 MB/s -44% 319 MB/s Much faster peak deep queue write.
+44%
AS-SSD Total
AS-SSD Total Score
802 Pts -49% 1,195 Pts Much stronger server IO.
+49%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
40.4 MB/s -122% 89.8 MB/s Hugely faster peak deep queue mixed IO.
+122%
ADQ Read
Avg. 4K-64Thread Read Speed
128 MB/s -55% 199 MB/s Much faster deep queue read.
+55%
ADQ Write
Avg. 4K-64Thread Write Speed
138 MB/s -36% 188 MB/s Much faster deep queue write.
+36%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
26.2 MB/s -106% 53.9 MB/s Hugely faster deep queue mixed IO.
+106%
Capacity
Capacity
275GB 256GB
ADVERTISEMENT

The 275GB Crucial MX300 supersedes the MX200. Unlike its predecessor, the MX300 is TLC based and therefore suffers from weak write speeds in comparison to MLC drives. The MX300 utilises a sophisticated algorithm to enable fast burst write speeds provided that there is sufficient free space on the disk but as the drive fills up write performance drops to the relatively poor levels seen on other TLC drives (similar to mechanical drives). At current prices (70 USD) the MX300 competes well with other low end drives such as the OCZ Trion, Adata SP550 and Samsung 750 EVO. As stocks build the MX300 is likely to see further price cuts, so it could become a very interesting value proposition. See the current value leaders here[Sep '16 SSDrivePro]

MORE DETAILS

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

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]

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 $297Nvidia GTX 1070 $410Samsung 850 Evo 250GB $95
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $220Nvidia GTX 1060-6GB $265Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $152SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $56HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
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