SamsungMZ-75E120B
SamsungMZ-7PD128BW

Controller: Samsung Dual Core MGX. Memory: Samsung 40nm TLC V-NAND

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

Real World Speed
Performance profile from 47,787 user samples
33,757 User Benchmarks
Best Bench: 113% 35GB free
Worst Bench: 71% 22GB free
Poor: 71% Great: 113%
SPEED RANK: 117th / 929
14,030 User Benchmarks
Best Bench: 98% 119GB free
Worst Bench: 50% 20GB free
Poor: 50% Great: 98%
SPEED RANK: 288th / 929
Effective Speed
Effective SSD Speed
94.7 % Faster effective speed.
+22%
77.4 %
Read
Avg. Sequential Read Speed
500 MB/s +3% 485 MB/s
Write
Avg. Sequential Write Speed
396 MB/s Faster write speed.
+29%
306 MB/s
4K Read
Avg. 4K Random Read Speed
38 MB/s Much faster random read.
+35%
28.2 MB/s
4K Write
Avg. 4K Random Write Speed
77 MB/s +3% 74.5 MB/s
Mixed
Avg. Sequential Mixed IO Speed
397 MB/s Faster mixed IO speed.
+19%
334 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
31.7 MB/s Much faster random mixed IO.
+61%
19.7 MB/s
Read
Peak Sequential Read Speed
518 MB/s 522 MB/s +1%
Write
Peak Sequential Write Speed
416 MB/s 440 MB/s Slightly faster peak write speed.
+6%
4K Read
Peak 4K Random Read Speed
46.1 MB/s Much faster peak random read.
+31%
35.3 MB/s
4K Write
Peak 4K Random Write Speed
102 MB/s 109 MB/s Slightly faster peak random write.
+7%
Mixed
Peak Sequential Mixed IO Speed
421 MB/s 477 MB/s Slightly faster peak mixed IO speed.
+13%
4K Mixed
Peak 4K Random Mixed IO Speed
44.3 MB/s Much faster peak random mixed IO.
+74%
25.4 MB/s
Market Share
Based on 7,224,126 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.63 % Hugely higher market share.
+91%
0.33 %
Value
Value For Money
59.2 % Hugely better value.
+87%
31.6 %
User Rating
UBM User Rating
76 % More popular.
+21%
63 %
Price
Price (score)
$85 Much cheaper.
+47%
$160
Age
Newest
42 Months Much more recent.
+38%
68 Months
DQ Read
Peak 4K-64Thread Read Speed
373 MB/s +4% 360 MB/s
DQ Write
Peak 4K-64Thread Write Speed
283 MB/s 315 MB/s Slightly faster peak deep queue write.
+11%
AS-SSD Total
AS-SSD Total Score
1,151 Pts 1,153 Pts +0%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
111 MB/s Much faster peak deep queue mixed IO.
+40%
79.3 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
200 MB/s Faster deep queue read.
+18%
169 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
191 MB/s Slightly faster deep queue write.
+9%
176 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
63.2 MB/s Much faster deep queue mixed IO.
+43%
44.2 MB/s
Capacity
Capacity
120GB 128GB
ADVERTISEMENT

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 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
Intel Core i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $250Samsung 850 Evo 500GB $125
Intel Core i5-8600K $222AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback