SamsungMZ-7KE128BW
SamsungMZ-7PD128BW

Controller: Samsung Triple Core MEX. Memory: Samsung 40nm MLC V-NAND

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

Real World Speed
Performance profile from 19,422 user samples
6,395 User Benchmarks
Best Bench: 115% 46GB free
Worst Bench: 65% 47GB free
Poor: 65% Great: 115%
SPEED RANK: 84th / 885
13,027 User Benchmarks
Best Bench: 99% 119GB free
Worst Bench: 56% 19GB free
Poor: 56% Great: 99%
SPEED RANK: 229th / 885
Effective Speed
Effective SSD Speed
92.7 % Faster effective speed.
+17%
79 %
Read
Avg. Sequential Read Speed
501 MB/s +3% 488 MB/s
Write
Avg. Sequential Write Speed
394 MB/s Much faster write speed.
+31%
301 MB/s
4K Read
Avg. 4K Random Read Speed
30.9 MB/s Slightly faster random read.
+7%
28.9 MB/s
4K Write
Avg. 4K Random Write Speed
85.9 MB/s Slightly faster random write.
+10%
77.8 MB/s
Mixed
Avg. Sequential Mixed IO Speed
418 MB/s Faster mixed IO speed.
+27%
328 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
29.7 MB/s Much faster random mixed IO.
+47%
20.2 MB/s
Read
Peak Sequential Read Speed
527 MB/s +1% 520 MB/s
Write
Peak Sequential Write Speed
491 MB/s Slightly faster peak write speed.
+12%
438 MB/s
4K Read
Peak 4K Random Read Speed
38.6 MB/s Slightly faster peak random read.
+8%
35.9 MB/s
4K Write
Peak 4K Random Write Speed
124 MB/s Slightly faster peak random write.
+11%
112 MB/s
Mixed
Peak Sequential Mixed IO Speed
495 MB/s +4% 474 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
40.6 MB/s Much faster peak random mixed IO.
+61%
25.2 MB/s
Market Share
Based on 5,626,299 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.1 % 0.33 % Hugely higher market share.
+230%
Value
Value For Money
39.7 % Better value.
+23%
32.3 %
User Rating
UBM User Rating
62 % 63 % +2%
Price
Price (score)
$150 Slightly cheaper.
+6%
$160
Age
Newest
43 Months Much more recent.
+33%
64 Months
DQ Read
Peak 4K-64Thread Read Speed
380 MB/s +4% 364 MB/s
DQ Write
Peak 4K-64Thread Write Speed
338 MB/s Slightly faster peak deep queue write.
+9%
310 MB/s
AS-SSD Total
AS-SSD Total Score
1,236 Pts Slightly stronger server IO.
+7%
1,158 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
143 MB/s Hugely faster peak deep queue mixed IO.
+81%
79 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
208 MB/s +3% 202 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
211 MB/s Faster deep queue write.
+17%
181 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
80.2 MB/s Much faster deep queue mixed IO.
+71%
46.9 MB/s
Capacity
Capacity
128GB 128GB
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

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]

ADVERTISEMENT

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 $140
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $185SanDisk 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
Today's hottest deals
User Guide  •  About  •  FAQs  •  Email  •  Privacy  •  Developer Feedback