SamsungMZ-7PD128BW
KingstonSV300S37A/120G

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

Controller: LSI SandForce SF2281. Flash Memory: Toshiba 19nm Toggle Mode MLC.

Real World Speed
Performance profile from 153,394 user samples
14,372 User Benchmarks
Best Bench: 99% 119GB free
Worst Bench: 51% 20GB free
Poor: 51% Great: 99%
SPEED RANK: 282nd / 929
139,022 User Benchmarks
Best Bench: 65% 21GB free
Worst Bench: 29% 14GB free
Poor: 29% Great: 65%
SPEED RANK: 738th / 929
Effective Speed
Effective SSD Speed
78 % Much faster effective speed.
+63%
47.7 %
Read
Avg. Sequential Read Speed
486 MB/s Much faster read speed.
+41%
345 MB/s
Write
Avg. Sequential Write Speed
310 MB/s Hugely faster write speed.
+179%
111 MB/s
4K Read
Avg. 4K Random Read Speed
28.3 MB/s Much faster random read.
+44%
19.6 MB/s
4K Write
Avg. 4K Random Write Speed
75.4 MB/s Slightly faster random write.
+9%
69.3 MB/s
Mixed
Avg. Sequential Mixed IO Speed
338 MB/s Hugely faster mixed IO speed.
+135%
144 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed
19.9 MB/s Much faster random mixed IO.
+73%
11.5 MB/s
Read
Peak Sequential Read Speed
522 MB/s +3% 506 MB/s
Write
Peak Sequential Write Speed
440 MB/s Hugely faster peak write speed.
+203%
145 MB/s
4K Read
Peak 4K Random Read Speed
35.4 MB/s Faster peak random read.
+24%
28.5 MB/s
4K Write
Peak 4K Random Write Speed
110 MB/s Slightly faster peak random write.
+8%
102 MB/s
Mixed
Peak Sequential Mixed IO Speed
476 MB/s Hugely faster peak mixed IO speed.
+142%
197 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
25.6 MB/s Much faster peak random mixed IO.
+41%
18.2 MB/s
Market Share
Based on 7,231,067 SSDs tested.
Market Share
Market Share (trailing 30 days)
0.33 % 2.15 % Hugely higher market share.
+552%
Value
Value For Money
31.9 % 41.4 % Better value.
+30%
User Rating
UBM User Rating
63 % Slightly more popular.
+11%
57 %
Price
Price (score)
$160 $55 Much cheaper.
+66%
Age
Newest
68 Months 67 Months +1%
DQ Read
Peak 4K-64Thread Read Speed
359 MB/s Hugely faster peak deep queue read.
+141%
149 MB/s
DQ Write
Peak 4K-64Thread Write Speed
316 MB/s Hugely faster peak deep queue write.
+123%
142 MB/s
AS-SSD Total
AS-SSD Total Score
1,154 Pts Hugely stronger server IO.
+93%
597 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed
79.6 MB/s Hugely faster peak deep queue mixed IO.
+97%
40.4 MB/s
ADQ Read
Avg. 4K-64Thread Read Speed
170 MB/s Hugely faster deep queue read.
+156%
66.4 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed
179 MB/s Much faster deep queue write.
+74%
103 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed
44.8 MB/s Hugely faster deep queue mixed IO.
+110%
21.3 MB/s
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 120GB Kingston V300 has a performance profile that closely matches its 240GB sibling. Both drives utilize a Sandforce LSI controller and therefore demonstrate relative weakness in their write speeds. With burst sequential read/write speeds of 497/166 MBps and 4k burst read/write speeds of 30/97 MBps the 120GB V300 is amongst the slower SSDs I have seen. A concern I have with this drive is the relatively slow real world speeds our users have experienced. Most drives have average throughput rates that are around 75% of peak. Both this and the 240GB V300s, based on 130 samples, are averaging sequential read rates of around 240 MBps which is less than 50% of peak. It's not all bad news though because the V300's are priced extremely aggressively and as a result still offer decent value for money. [Feb '14 SSDrivePro]

MORE DETAILS

Solid State Drive Rankings (Price vs Performance) June 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 $347Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $270Samsung 850 Evo 500GB $125
Intel Core i5-8600K $239AMD RX 480 $280Samsung 850 Pro 256GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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