SamsungMZ-7PD128BW
SamsungMZ-75E120B

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND. Release date: Q4 2014.

Real World Speed
Performance profile from 53,408 user samples
20,559 User Benchmarks
Best Bench: 110% 112GB free
Worst Bench: 59% 13GB free
Poor: 59% Great: 110%
SPEED RANK: 291st / 1003
32,849 User Benchmarks
Best Bench: 115% 112GB free
Worst Bench: 63% 19GB free (System drive)
Poor: 63% Great: 115%
SPEED RANK: 205th / 1003
Effective Speed
Effective SSD Speed
87 % 96.3 % Slightly faster effective speed.
+11%
Read
Avg. Sequential Read Speed
437 MB/s 461 MB/s Slightly faster read speed.
+5%
Write
Avg. Sequential Write Speed
321 MB/s 438 MB/s Much faster write speed.
+36%
4K Read
Avg. 4K Random Read Speed
29.9 MB/s 38.3 MB/s Faster random read.
+28%
4K Write
Avg. 4K Random Write Speed
81.1 MB/s 93.4 MB/s Faster random write.
+15%
Mixed
Avg. Sequential Mixed IO Speed
258 MB/s 356 MB/s Much faster mixed IO speed.
+38%
4K Mixed
Avg. 4K Random Mixed IO Speed
35.3 MB/s 50.6 MB/s Much faster random mixed IO.
+43%
SusWrite
Avg. Sustained Write Speed
266 MB/s Much faster sustained write speed.
+64%
162 MB/s
Read
Peak Sequential Read Speed
495 MB/s 506 MB/s +2%
Write
Peak Sequential Write Speed
445 MB/s 490 MB/s Slightly faster peak write speed.
+10%
4K Read
Peak 4K Random Read Speed
36.3 MB/s 48.2 MB/s Much faster peak random read.
+33%
4K Write
Peak 4K Random Write Speed
115 MB/s 128 MB/s Slightly faster peak random write.
+11%
Mixed
Peak Sequential Mixed IO Speed
325 MB/s 410 MB/s Faster peak mixed IO speed.
+26%
4K Mixed
Peak 4K Random Mixed IO Speed
43.5 MB/s 63 MB/s Much faster peak random mixed IO.
+45%
SusWrite
Peak Sequential Sustained Write 60s Average
438 MB/s Hugely faster peak sustained write speed.
+135%
186 MB/s
Market Share
Based on 15,175,759 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.14 % 0.27 % Hugely higher market share.
+93%
Value
Value For Money
35.5 % 49.4 % Much better value.
+39%
User Rating
UBM User Rating
64 % 76 % More popular.
+19%
Price
Price (score)
$160 $111 Much cheaper.
+31%
Age
Newest
80 Months 54 Months Much more recent.
+32%
DQ Read
Peak 4K-64Thread Read Speed
376 MB/s 387 MB/s +3%
DQ Write
Peak 4K-64Thread Write Speed
321 MB/s 360 MB/s Slightly faster peak deep queue write.
+12%
AS-SSD Total
AS-SSD Total Score
1,189 Pts 1289 Pts Slightly stronger server IO.
+8%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
154 MB/s 360 MB/s Hugely faster peak deep queue mixed IO.
+134%
ADQ Read
Avg. 4K-64Thread Read Speed
325 MB/s 339 MB/s +4%
ADQ Write
Avg. 4K-64Thread Write Speed
234 MB/s 307 MB/s Much faster deep queue write.
+31%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
122 MB/s 311 MB/s Hugely faster deep queue mixed IO.
+155%
Capacity
Capacity
128GB 120GB
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The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) June 2019 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 - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
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.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - 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 current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $350Nvidia GTX 1070 $335Samsung 850 Evo 250GB $101
AMD Ryzen 5 2600 $140Nvidia GTX 1060-6GB $230Samsung 850 Evo 500GB $100
AMD Ryzen 7 2700X $274Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $97
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $75G.SKILL Trident Z DDR4 3200 C14 4x16GB $646SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $75SanDisk Ultra Fit 32GB $12
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