SamsungMZ-7PD256BW
CrucialCT275MX300SSD1

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

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

Real World Speed
Performance profile from 39,132 user samples
22,431 User Benchmarks
Best Bench: 105% 182GB free
Worst Bench: 56% 41GB free
Poor: 56% Great: 105%
SPEED RANK: 203rd / 921
16,701 User Benchmarks
Best Bench: 82% 93GB free
Worst Bench: 50% 1GB free
Poor: 50% Great: 82%
SPEED RANK: 430th / 921
Effective Speed
Effective SSD Speed
83 % Faster effective speed.
+22%
67.9 %
Read
Avg. Sequential Read Speed
493 MB/s Slightly faster read speed.
+6%
464 MB/s
Write
Avg. Sequential Write Speed
362 MB/s Faster write speed.
+22%
296 MB/s
4K Read
Avg. 4K Random Read Speed
28.2 MB/s Faster random read.
+25%
22.6 MB/s
4K Write
Avg. 4K Random Write Speed
75.7 MB/s Much faster random write.
+31%
57.6 MB/s
Mixed
Avg. Sequential Mixed IO Speed
393 MB/s Faster mixed IO speed.
+29%
304 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
21.8 MB/s Faster random mixed IO.
+29%
16.9 MB/s
Read
Peak Sequential Read Speed
523 MB/s Slightly faster peak read speed.
+8%
485 MB/s
Write
Peak Sequential Write Speed
494 MB/s Much faster peak write speed.
+46%
339 MB/s
4K Read
Peak 4K Random Read Speed
35.8 MB/s Much faster peak random read.
+30%
27.5 MB/s
4K Write
Peak 4K Random Write Speed
111 MB/s Much faster peak random write.
+38%
80.5 MB/s
Mixed
Peak Sequential Mixed IO Speed
509 MB/s Much faster peak mixed IO speed.
+50%
339 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
28.4 MB/s Faster peak random mixed IO.
+17%
24.3 MB/s
Market Share
Based on 6,466,514 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.41 % 0.49 % Higher market share.
+20%
Value
Value For Money
35.6 % 86.8 % Hugely better value.
+144%
User Rating
UBM User Rating
63 % 67 % Slightly more popular.
+6%
Price
Price (score)
$300 $75 Much cheaper.
+75%
Age
Newest
66 Months 22 Months Much more recent.
+67%
DQ Read
Peak 4K-64Thread Read Speed
365 MB/s Much faster peak deep queue read.
+59%
230 MB/s
DQ Write
Peak 4K-64Thread Write Speed
317 MB/s Much faster peak deep queue write.
+45%
219 MB/s
AS-SSD Total
AS-SSD Total Score
1,174 Pts Much stronger server IO.
+47%
799 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
89.7 MB/s Hugely faster peak deep queue mixed IO.
+122%
40.4 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
193 MB/s Much faster deep queue read.
+57%
123 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
184 MB/s Much faster deep queue write.
+40%
131 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
53.3 MB/s Hugely faster deep queue mixed IO.
+103%
26.2 MB/s
Capacity
Capacity
256GB 275GB
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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 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

Solid State Drive Rankings (Price vs Performance) April 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 - Sometimes benchmarks get it completely wrong...
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.
  • Details ordered by value - Detailed performance stats ordered by overall value for money.
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

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CPUGPUSSD
Intel Core i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $90
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $136
AMD Ryzen 5 1600 $176AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $183SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $36Corsair Vengeance LPX DDR4 3200 C16 2x8GB $193SanDisk Ultra Fit 32GB $12
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