SamsungMZ-7TE120BW
SamsungMZ-7PD128BW

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

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

Real World Speed
Performance profile from 42,258 user samples
32,192 User Benchmarks
Best Bench: 94% 44GB free
Worst Bench: 57% 84GB free
Poor: 57% Great: 94%
SPEED RANK: 231st / 859
10,066 User Benchmarks
Best Bench: 101% 20GB free
Worst Bench: 58% 13GB free
Poor: 58% Great: 101%
SPEED RANK: 203rd / 859
Effective Speed
Effective SSD Speed
77.5 % -3% 79.5 % +3%
Read
Avg. Sequential Read Speed
471 MB/s -4% 489 MB/s +4%
Write
Avg. Sequential Write Speed
312 MB/s +1% 309 MB/s -1%
4K Read
Avg. 4K Random Read Speed
36.2 MB/s Faster random read.
+24%
29.1 MB/s -24%
4K Write
Avg. 4K Random Write Speed
57.4 MB/s -35% 77.4 MB/s Much faster random write.
+35%
Mixed
Avg. Sequential Mixed IO Speed
305 MB/s -11% 338 MB/s Slightly faster mixed IO speed.
+11%
4K Mixed
Avg. 4K Random Mixed IO Speed
19.2 MB/s -4% 20 MB/s +4%
Read
Peak Sequential Read Speed
499 MB/s -4% 521 MB/s +4%
Write
Peak Sequential Write Speed
351 MB/s -25% 439 MB/s Faster peak write speed.
+25%
4K Read
Peak 4K Random Read Speed
45.4 MB/s Faster peak random read.
+26%
36.1 MB/s -26%
4K Write
Peak 4K Random Write Speed
85.2 MB/s -35% 115 MB/s Much faster peak random write.
+35%
Mixed
Peak Sequential Mixed IO Speed
343 MB/s -39% 477 MB/s Much faster peak mixed IO speed.
+39%
4K Mixed
Peak 4K Random Mixed IO Speed
24.5 MB/s -5% 25.8 MB/s Slightly faster peak random mixed IO.
+5%
Market Share
Based on 3,864,299 SSDs tested.
Market Share
Market Share (trailing 30 days)
1.67 % Hugely higher market share.
+209%
0.54 % -209%
Value
Value For Money
33.4 % +3% 32.5 % -3%
User Rating
UBM User Rating
64 % +2% 63 % -2%
Price
Price (score)
$140 Slightly cheaper.
+13%
$160 -13%
Age
Newest
50 Months More recent.
+15%
59 Months -15%
DQ Read
Peak 4K-64Thread Read Speed
361 MB/s -2% 367 MB/s +2%
DQ Write
Peak 4K-64Thread Write Speed
239 MB/s -32% 315 MB/s Much faster peak deep queue write.
+32%
AS-SSD Total
AS-SSD Total Score
1,059 Pts -11% 1,171 Pts Slightly stronger server IO.
+11%
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
68.2 MB/s -17% 79.5 MB/s Faster peak deep queue mixed IO.
+17%
ADQ Read
Avg. 4K-64Thread Read Speed
189 MB/s -7% 202 MB/s Slightly faster deep queue read.
+7%
ADQ Write
Avg. 4K-64Thread Write Speed
151 MB/s -21% 183 MB/s Faster deep queue write.
+21%
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
43.2 MB/s -11% 47.9 MB/s Slightly faster deep queue mixed IO.
+11%
Capacity
Capacity
120GB 128GB
ADVERTISEMENT

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

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) September 2017 SSD Rankings.

Welcome to our consumer SSD comparison. We calculate effective speed based on real world performance then adjust by cost per GB to yield a value for money rating. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top SSDs. Share your opinion by voting. [SSDrivePro]

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 i7-7700K $295Nvidia GTX 1070 $400Samsung 850 Evo 250GB $97
AMD Ryzen 7 1700 $270AMD RX 480 $350Samsung 850 Pro 256GB $120
Intel Core i5-7600K $210Nvidia GTX 1060-6GB $263Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $724SanDisk Extreme 64GB $33
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $155SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $56HyperX Fury DDR4 2133 C14 2x8GB $141SanDisk Extreme 16GB $20
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