SamsungMZ-7KE256BW
CrucialCT275MX300SSD1

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND

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

Real World Speed
Performance profile from 30,966 user samples
24,757 User Benchmarks
Best Bench: 123% 172GB free
Worst Bench: 70% 165GB free
Poor: 70% Great: 123%
SPEED RANK: 58th / 857
6,209 User Benchmarks
Best Bench: 82% 211GB free
Worst Bench: 48% 12GB free
Poor: 48% Great: 82%
SPEED RANK: 365th / 857
Effective Speed
Effective SSD Speed
100 % Much faster effective speed.
+48%
67.8 % -48%
Read
Avg. Sequential Read Speed
504 MB/s Slightly faster read speed.
+9%
461 MB/s -9%
Write
Avg. Sequential Write Speed
443 MB/s Much faster write speed.
+50%
296 MB/s -50%
4K Read
Avg. 4K Random Read Speed
33.4 MB/s Much faster random read.
+50%
22.3 MB/s -50%
4K Write
Avg. 4K Random Write Speed
90.7 MB/s Much faster random write.
+56%
58 MB/s -56%
Mixed
Avg. Sequential Mixed IO Speed
462 MB/s Much faster mixed IO speed.
+50%
307 MB/s -50%
4K Mixed
Avg. 4K Random Mixed IO Speed
34.4 MB/s Hugely faster random mixed IO.
+102%
17 MB/s -102%
Read
Peak Sequential Read Speed
529 MB/s Slightly faster peak read speed.
+9%
484 MB/s -9%
Write
Peak Sequential Write Speed
503 MB/s Much faster peak write speed.
+49%
337 MB/s -49%
4K Read
Peak 4K Random Read Speed
43.1 MB/s Much faster peak random read.
+56%
27.7 MB/s -56%
4K Write
Peak 4K Random Write Speed
131 MB/s Much faster peak random write.
+57%
83.5 MB/s -57%
Mixed
Peak Sequential Mixed IO Speed
514 MB/s Much faster peak mixed IO speed.
+52%
339 MB/s -52%
4K Mixed
Peak 4K Random Mixed IO Speed
50.5 MB/s Hugely faster peak random mixed IO.
+108%
24.3 MB/s -108%
Market Share
Based on 3,531,581 SSDs tested.
Market Share
Market Share (trailing 30 days)
1.42 % Hugely higher market share.
+100%
0.71 % -100%
Value
Value For Money
82.2 % Slightly better value.
+14%
72.1 % -14%
User Rating
UBM User Rating
96 % Much more popular.
+50%
64 % -50%
Price
Price (score)
$126 -24% $96 Cheaper.
+24%
Age
Newest
37 Months -62% 14 Months Much more recent.
+62%
DQ Read
Peak 4K-64Thread Read Speed
381 MB/s Much faster peak deep queue read.
+66%
230 MB/s -66%
DQ Write
Peak 4K-64Thread Write Speed
343 MB/s Much faster peak deep queue write.
+55%
221 MB/s -55%
AS-SSD Total
AS-SSD Total Score
1,260 Pts Much stronger server IO.
+57%
804 Pts -57%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
165 MB/s Hugely faster peak deep queue mixed IO.
+309%
40.3 MB/s -309%
ADQ Read
Avg. 4K-64Thread Read Speed
209 MB/s Much faster deep queue read.
+70%
123 MB/s -70%
ADQ Write
Avg. 4K-64Thread Write Speed
222 MB/s Much faster deep queue write.
+64%
135 MB/s -64%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
88.4 MB/s Hugely faster deep queue mixed IO.
+247%
25.5 MB/s -247%
Capacity
Capacity
256GB 275GB
ADVERTISEMENT

The 256GB Samsung 850 Pro is the fastest consumer SSD we have seen to date. Thanks to Samsung's new 3D V-NAND the 850 Pro has lower power consumption and better performance, albeit marginally, than both the 840 Evo and 840 Pro. Looking at the benchmark figures for the 840 and 850 Pros shows that the effective performance improvement is 10% whereas the 850 Pro beats the 840 Evo by 16%. These drives effectively saturate SATA 3.0 making it difficult to distinguish between them in day-to-day use. At current prices the 850 Pro is prohibitively expensive, prices need to drop by 15% before it approaches the 840 Pro from a value perspective. Samsung may release a value orientated 850 Evo soon, but for now "most" users are better off with the 840 Pro. [Oct '14 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) August 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 $298Nvidia GTX 1070 $410Samsung 850 Evo 250GB $100
AMD Ryzen 7 1700 $280AMD RX 480 $390Samsung 850 Pro 256GB $126
Intel Core i5-7600K $212Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $168
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $75Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $57HyperX Fury DDR4 2133 C14 2x8GB $140SanDisk Ultra Fit 32GB $13
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