SamsungMZ-7PD256BW
CrucialCT250MX500SSD1

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

Controller: Silicon Motion SM2258. Flash Memory: Micron 3D TLC.

Real World Speed
Performance profile from 26,079 user samples
24,213 User Benchmarks
Best Bench: 106% 170GB free
Worst Bench: 56% 94GB free
Poor: 56% Great: 106%
SPEED RANK: 193rd / 927
1,866 User Benchmarks
Best Bench: 104% 155GB free
Worst Bench: 60% 145GB free
Poor: 60% Great: 104%
SPEED RANK: 169th / 927
Effective Speed
Effective SSD Speed
84.1 % 86.6 % +3%
Read
Avg. Sequential Read Speed
494 MB/s 504 MB/s +2%
Write
Avg. Sequential Write Speed
367 MB/s 376 MB/s +2%
4K Read
Avg. 4K Random Read Speed
28.6 MB/s 31.2 MB/s Slightly faster random read.
+9%
4K Write
Avg. 4K Random Write Speed
76.3 MB/s Slightly faster random write.
+11%
68.9 MB/s
Mixed
Avg. Sequential Mixed IO Speed
398 MB/s 402 MB/s +1%
4K Mixed
Avg. 4K Random Mixed IO Speed
22.3 MB/s 28.6 MB/s Faster random mixed IO.
+28%
Read
Peak Sequential Read Speed
524 MB/s 527 MB/s +1%
Write
Peak Sequential Write Speed
496 MB/s Faster peak write speed.
+24%
399 MB/s
4K Read
Peak 4K Random Read Speed
35.7 MB/s 39.1 MB/s Slightly faster peak random read.
+10%
4K Write
Peak 4K Random Write Speed
111 MB/s Faster peak random write.
+20%
92.4 MB/s
Mixed
Peak Sequential Mixed IO Speed
510 MB/s Faster peak mixed IO speed.
+21%
422 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
28.7 MB/s 41.8 MB/s Much faster peak random mixed IO.
+46%
Market Share
Based on 6,774,951 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.45 % 0.53 % Higher market share.
+18%
Value
Value For Money
36.5 % 105 % Hugely better value.
+188%
User Rating
UBM User Rating
63 % 70 % Slightly more popular.
+11%
Price
Price (score)
$295 $73 Much cheaper.
+75%
Age
Newest
67 Months 5 Months Hugely more recent.
+93%
DQ Read
Peak 4K-64Thread Read Speed
364 MB/s +4% 350 MB/s
DQ Write
Peak 4K-64Thread Write Speed
320 MB/s Faster peak deep queue write.
+17%
273 MB/s
AS-SSD Total
AS-SSD Total Score
1,175 Pts Slightly stronger server IO.
+9%
1,081 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
90.4 MB/s Faster peak deep queue mixed IO.
+22%
74.4 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
199 MB/s Faster deep queue read.
+28%
156 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
190 MB/s Faster deep queue write.
+18%
161 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
52.7 MB/s Faster deep queue mixed IO.
+20%
44 MB/s
Capacity
Capacity
256GB 250GB
ADVERTISEMENT

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 MX500 is Crucial’s current flagship consumer SATA SSD featuring their latest second generation 64-layer 3D TLC NAND. It’s available in 250 GB, 500 GB, 1 TB and 2 TB capacities in a 2.5-inch form factor. All but the 2 TB version will also be available in M.2 (2280) form in the future. The MX500 features a Silicon Motion SM2258 controller which is a change from the Marvell 88SS1074 controller featured in the MX300 (it’s nearly two year old predecessor). Performance is around 30% better than on the MX300 which currently retails at the same price. The MX500 has an SLC cache which increases with drive capacity. Consequently, the larger capacities are better able to sustain high sequential write speeds. The 250 GB version has 250MB of SLC cache, the 500 GB has 512 MB, the 1 TB has 1 GB and the 2 TB has 2 GB. Extended sustained write performance tests show that even though speed does drop off after the cache has been exhausted, it is still maintained at very respectable levels. The MX500’s five year warranty is in line with Samsung’s 850 Evo and exceeds it in terms of endurance (just 75 TBW for the 250 GB 850 Evo versus 100 TBW for the 250 GB MX500). It doesn’t quite match up to the Samsung’s 850 Evo’s performance (effective speed 8% slower), however at current prices it is about 20% cheaper, and on balance offers better value for money. [Mar '18 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) May 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]

ADVERTISEMENT

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

 Best User Rated

The Best.
CPUGPUSSD
AMD Ryzen 5 1600 $169Nvidia GTX 1070 $447Samsung 850 Evo 250GB $100
Intel Core i7-8700K $325Nvidia GTX 1060-6GB $295Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $330Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $41
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $960SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $60HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Extreme 16GB $20
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback