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 23,877 user samples
16,010 User Benchmarks
Best Bench: 111% 43GB free
Worst Bench: 61% 32GB free (System drive)
Poor: 61% Great: 111%
SPEED RANK: 262nd / 980
7,867 User Benchmarks
Best Bench: 89% 92GB free
Worst Bench: 53% 50GB free (System drive)
Poor: 53% Great: 89%
SPEED RANK: 478th / 980
Effective Speed
Effective SSD Speed
87.6 % Faster effective speed.
+19%
73.3 %
Read
Avg. Sequential Read Speed
439 MB/s Slightly faster read speed.
+14%
386 MB/s
Write
Avg. Sequential Write Speed
314 MB/s Hugely faster write speed.
+107%
152 MB/s
4K Read
Avg. 4K Random Read Speed
30.5 MB/s 31.6 MB/s +4%
4K Write
Avg. 4K Random Write Speed
85.1 MB/s +5% 81.4 MB/s
Mixed
Avg. Sequential Mixed IO Speed
256 MB/s Faster mixed IO speed.
+26%
203 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
35.6 MB/s 36.2 MB/s +2%
SusWrite
Avg. Sustained Write Speed
256 MB/s Hugely faster sustained write speed.
+98%
129 MB/s
Read
Peak Sequential Read Speed
493 MB/s Slightly faster peak read speed.
+11%
443 MB/s
Write
Peak Sequential Write Speed
445 MB/s Hugely faster peak write speed.
+163%
169 MB/s
4K Read
Peak 4K Random Read Speed
36.7 MB/s 40.2 MB/s Slightly faster peak random read.
+10%
4K Write
Peak 4K Random Write Speed
119 MB/s 119 MB/s
Mixed
Peak Sequential Mixed IO Speed
328 MB/s Much faster peak mixed IO speed.
+49%
220 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
44.5 MB/s 46.2 MB/s +4%
SusWrite
Peak Sequential Sustained Write 60s Average
437 MB/s Hugely faster peak sustained write speed.
+166%
164 MB/s
Market Share
Based on 11,454,160 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.18 % Much higher market share.
+64%
0.11 %
Value
Value For Money
35.8 % 40.9 % Slightly better value.
+14%
User Rating
UBM User Rating
63 % +3% 61 %
Price
Price (score)
$160 $99 Much cheaper.
+38%
Age
Newest
75 Months Slightly more recent.
+10%
83 Months
DQ Read
Peak 4K-64Thread Read Speed
376 MB/s Much faster peak deep queue read.
+57%
239 MB/s
DQ Write
Peak 4K-64Thread Write Speed
327 MB/s Hugely faster peak deep queue write.
+97%
166 MB/s
AS-SSD Total
AS-SSD Total Score
1,199 Pts Much stronger server IO.
+51%
794 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
155 MB/s 188 MB/s Faster peak deep queue mixed IO.
+21%
ADQ Read
Avg. 4K-64Thread Read Speed
328 MB/s Much faster deep queue read.
+59%
206 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
235 MB/s Much faster deep queue write.
+59%
148 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
120 MB/s 157 MB/s Much faster deep queue mixed IO.
+31%
Capacity
Capacity
128GB 120GB
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

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) January 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 $360Nvidia GTX 1070 $320Samsung 850 Evo 250GB $70
AMD Ryzen 5 1600 $155Nvidia GTX 1060-6GB $204Samsung 850 Evo 500GB $110
Intel Core i5-8600K $260Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $105SanDisk Extreme 64GB $43
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $780SanDisk Extreme 32GB $48
WD Blue 1TB (2012) $45Corsair Vengeance LPX DDR4 3200 C16 2x8GB $125SanDisk Extreme 16GB $22
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