SamsungMZ-7PD128BW
SamsungMZ-76E4T0B

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

VS
About

Controller: Samsung MJX. Memory: Samsung 64 layer TLC V-NAND. Release date ≈ Q1 2018.

Real World Speed
Performance profile from 24,593 user samples
23,713 User Benchmarks
Best Bench: 111% 87GB free
Worst Bench: 61% 42GB free
Poor: 61% Great: 111%
SPEED RANK: 304th / 1012
880 User Benchmarks
Best Bench: 132% 2TB free
Worst Bench: 81% 3TB free (System drive)
Poor: 81% Great: 132%
SPEED RANK: 161st / 1012
Effective Speed
Effective SSD Speed
87.2 % 113 % Faster effective speed.
+30%
Read
Avg. Sequential Read Speed
443 MB/s 483 MB/s Slightly faster read speed.
+9%
Write
Avg. Sequential Write Speed
321 MB/s 449 MB/s Much faster write speed.
+40%
4K Read
Avg. 4K Random Read Speed
30.6 MB/s 37.2 MB/s Faster random read.
+22%
4K Write
Avg. 4K Random Write Speed
83.3 MB/s 93.6 MB/s Slightly faster random write.
+12%
Mixed
Avg. Sequential Mixed IO Speed
259 MB/s 426 MB/s Much faster mixed IO speed.
+64%
4K Mixed
Avg. 4K Random Mixed IO Speed
35.9 MB/s 50.6 MB/s Much faster random mixed IO.
+41%
SusWrite
Avg. Sustained Write Speed
253 MB/s 435 MB/s Much faster sustained write speed.
+72%
Read
Peak Sequential Read Speed
496 MB/s 514 MB/s +4%
Write
Peak Sequential Write Speed
444 MB/s 489 MB/s Slightly faster peak write speed.
+10%
4K Read
Peak 4K Random Read Speed
36.5 MB/s 45.3 MB/s Faster peak random read.
+24%
4K Write
Peak 4K Random Write Speed
116 MB/s 130 MB/s Slightly faster peak random write.
+12%
Mixed
Peak Sequential Mixed IO Speed
328 MB/s 466 MB/s Much faster peak mixed IO speed.
+42%
4K Mixed
Peak 4K Random Mixed IO Speed
44.3 MB/s 63.7 MB/s Much faster peak random mixed IO.
+44%
SusWrite
Peak Sequential Sustained Write 60s Average
431 MB/s 488 MB/s Slightly faster peak sustained write speed.
+13%
Market Share
Based on 20,094,986 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.09 % Insanely higher market share.
+∞%
0 %
Value
Value For Money
4.8 % 32.6 % Hugely better value.
+579%
User Rating
UBM User Rating
64 % More popular.
+21%
53 %
Price
Price (score)
$160 Much cheaper.
+71%
$550
Age
Newest
86 Months 22+ Months Much more recent.
+74%
DQ Read
Peak 4K-64Thread Read Speed
376 MB/s 385 MB/s +2%
DQ Write
Peak 4K-64Thread Write Speed
328 MB/s 353 MB/s Slightly faster peak deep queue write.
+8%
AS-SSD Total
AS-SSD Total Score
1,197 Pts 1,276 Pts Slightly stronger server IO.
+7%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
155 MB/s 362 MB/s Hugely faster peak deep queue mixed IO.
+134%
ADQ Read
Avg. 4K-64Thread Read Speed
318 MB/s 336 MB/s Slightly faster deep queue read.
+6%
ADQ Write
Avg. 4K-64Thread Write Speed
233 MB/s 300 MB/s Faster deep queue write.
+29%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
121 MB/s 305 MB/s Hugely faster deep queue mixed IO.
+152%
Capacity
Capacity
128GB 4TB
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

Good :) [Apr '19 RifluY29]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) December 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]

ADVERTISEMENT

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 i5-9400F $148Nvidia GTX 1660S (Super) $270Crucial MX500 250GB $45
Intel Core i5-9600K $200AMD RX 590 $180Samsung 850 Evo 120GB $58
Intel Core i7-9700K $369Nvidia GTX 1650S (Super) $160Samsung 850 Pro 512GB $230
HDDRAMUSB
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
Today's hottest deals
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer Feedback