SamsungMZ-7PD128BW
SamsungMZ-7TE120BW

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

Controller: Samsung 3 Core MEX. Memory: Samsung 19nm Toggle Mode TLC.

Real World Speed
Performance profile from 59,141 user samples
13,027 User Benchmarks
Best Bench: 99% 119GB free
Worst Bench: 56% 19GB free
Poor: 56% Great: 99%
SPEED RANK: 229th / 885
46,114 User Benchmarks
Best Bench: 93% 3GB free
Worst Bench: 56% 10GB free
Poor: 56% Great: 93%
SPEED RANK: 256th / 885
Effective Speed
Effective SSD Speed
79 % +2% 77.2 %
Read
Avg. Sequential Read Speed
488 MB/s +3% 473 MB/s
Write
Avg. Sequential Write Speed
301 MB/s 315 MB/s +5%
4K Read
Avg. 4K Random Read Speed
28.9 MB/s 36.1 MB/s Faster random read.
+25%
4K Write
Avg. 4K Random Write Speed
77.8 MB/s Much faster random write.
+37%
56.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
328 MB/s Slightly faster mixed IO speed.
+6%
308 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
20.2 MB/s Slightly faster random mixed IO.
+7%
18.8 MB/s
Read
Peak Sequential Read Speed
520 MB/s +4% 501 MB/s
Write
Peak Sequential Write Speed
438 MB/s Faster peak write speed.
+25%
351 MB/s
4K Read
Peak 4K Random Read Speed
35.9 MB/s 44.7 MB/s Faster peak random read.
+25%
4K Write
Peak 4K Random Write Speed
112 MB/s Much faster peak random write.
+40%
80 MB/s
Mixed
Peak Sequential Mixed IO Speed
474 MB/s Much faster peak mixed IO speed.
+38%
343 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
25.2 MB/s +3% 24.4 MB/s
Market Share
Based on 5,619,061 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.28 % 1.05 % Hugely higher market share.
+275%
Value
Value For Money
32.3 % Slightly better value.
+12%
28.7 %
User Rating
UBM User Rating
63 % +2% 62 %
Price
Price (score)
$160 Slightly cheaper.
+6%
$170
Age
Newest
64 Months 55 Months Slightly more recent.
+14%
DQ Read
Peak 4K-64Thread Read Speed
364 MB/s +2% 357 MB/s
DQ Write
Peak 4K-64Thread Write Speed
310 MB/s Much faster peak deep queue write.
+31%
236 MB/s
AS-SSD Total
AS-SSD Total Score
1,158 Pts Slightly stronger server IO.
+11%
1,044 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
79 MB/s Faster peak deep queue mixed IO.
+17%
67.7 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
202 MB/s Slightly faster deep queue read.
+11%
182 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
181 MB/s Faster deep queue write.
+23%
147 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
46.9 MB/s Faster deep queue mixed IO.
+18%
39.8 MB/s
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 120GB Evo, like its 250GB sibling, features a second level Turbowrite cache (TWC). This 3GB block of high speed SLC memory allows the Evo to write data at 370 MB/s, nearly double its normal rate. When the TWC is full write speeds drop by around 50% but since consumers generally write less than 3GB in a typical write operation, the performance drop will rarely be noticed. On the other hand, in a server environment this sort of performance degradation would be unacceptable. Comparing the 120GB and 250GB Evos shows that they have similar performance profiles. The performance equivalence between the different capacities, coupled with the fact that their prices are almost linear, implies that both capacities represent roughly the same value for money. Within its TWC, the 120GB Evo is capable of chart topping burst IO rates and it sits squarely amongst the best performing 120GB drives. [Aug '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) February 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 - 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 $330Nvidia GTX 1070 $430Samsung 850 Evo 250GB $87
Intel Core i7-7700K $290Nvidia GTX 1060-6GB $285Samsung 850 Evo 500GB $146
AMD Ryzen 5 1600 $170AMD RX 480 $400Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $180SanDisk Extreme 64GB $50
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $23
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $200SanDisk Extreme 16GB $18
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