SamsungMZ-7PD128BW
IntelSSDSC2CW120A3

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

Controller: LSI SandForce SF2281. Flash Memory: Intel Synchronous 25nm MLC. Release date: Q1 2012.

Real World Speed
Performance profile from 21,006 user samples
13,110 User Benchmarks
Best Bench: 110% 55GB free
Worst Bench: 57% 31GB free (System drive)
Poor: 57% Great: 110%
SPEED RANK: 220th / 956
7,896 User Benchmarks
Best Bench: 89% 34GB free
Worst Bench: 56% 13GB free (System drive)
Poor: 56% Great: 89%
SPEED RANK: 420th / 956
Effective Speed
Effective SSD Speed
86.9 % Faster effective speed.
+19%
73.1 %
Read
Avg. Sequential Read Speed
436 MB/s Slightly faster read speed.
+14%
382 MB/s
Write
Avg. Sequential Write Speed
319 MB/s Hugely faster write speed.
+110%
152 MB/s
4K Read
Avg. 4K Random Read Speed
30.4 MB/s 31.6 MB/s +4%
4K Write
Avg. 4K Random Write Speed
86.7 MB/s Slightly faster random write.
+7%
81.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed
254 MB/s Faster mixed IO speed.
+25%
204 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
35.8 MB/s 35.9 MB/s +0%
SusWrite
Avg. Sustained Write Speed
249 MB/s Hugely faster sustained write speed.
+92%
130 MB/s
Read
Peak Sequential Read Speed
492 MB/s Slightly faster peak read speed.
+11%
445 MB/s
Write
Peak Sequential Write Speed
442 MB/s Hugely faster peak write speed.
+160%
170 MB/s
4K Read
Peak 4K Random Read Speed
36.9 MB/s 40.3 MB/s Slightly faster peak random read.
+9%
4K Write
Peak 4K Random Write Speed
117 MB/s 119 MB/s +2%
Mixed
Peak Sequential Mixed IO Speed
323 MB/s Much faster peak mixed IO speed.
+47%
220 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
44 MB/s 46.4 MB/s Slightly faster peak random mixed IO.
+5%
SusWrite
Peak Sequential Sustained Write 60s Average
427 MB/s Hugely faster peak sustained write speed.
+174%
156 MB/s
Market Share
Based on 7,979,188 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.12 % Hugely higher market share.
+100%
0.06 %
Value
Value For Money
35.5 % 39.2 % Slightly better value.
+10%
User Rating
UBM User Rating
63 % +3% 61 %
Price
Price (score)
$160 $104 Much cheaper.
+35%
Age
Newest
70 Months Slightly more recent.
+10%
78 Months
DQ Read
Peak 4K-64Thread Read Speed
378 MB/s Much faster peak deep queue read.
+59%
238 MB/s
DQ Write
Peak 4K-64Thread Write Speed
313 MB/s Hugely faster peak deep queue write.
+90%
165 MB/s
AS-SSD Total
AS-SSD Total Score
1,186 Pts Much stronger server IO.
+50%
792 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
154 MB/s 187 MB/s Faster peak deep queue mixed IO.
+21%
ADQ Read
Avg. 4K-64Thread Read Speed
314 MB/s Much faster deep queue read.
+52%
206 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
234 MB/s Much faster deep queue write.
+57%
149 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
117 MB/s 157 MB/s Much faster deep queue mixed IO.
+34%
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

The Intel 520 Series was Intel's first SSD to feature a Sandforce 2281 controller. This controller has powered countless SSDs over the last three years but is now dated and is known to be limited in the area of incompressible write speed. The 120GB Intel 520 scored peak and average sequential read/write speeds of 514/157 and 421/133. These read speeds are good but the peak write of 157 MB/s lags the group leaders average of 313 MB/s by nearly 100%. This relative inability to write lowers the 520's overall effective speed to 403 MB/s or 15% lower than the 459 MB/s achieved by the group leaders. At two years of age the Intel 520 can no longer compete with newer drives, there is far better value available amongst the group leaders[Feb '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) August 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]

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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 $356Nvidia GTX 1070 $380Samsung 850 Evo 250GB $70
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $240Samsung 850 Evo 500GB $120
Intel Core i5-8600K $249AMD RX 480 $280Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 64GB $80
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $901SanDisk Extreme 32GB $30
WD Blue 1TB (2012) $39Corsair Vengeance LPX DDR4 3200 C16 2x8GB $175SanDisk Ultra Fit 32GB $12
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