Average Bench: 105% (5th of 108)

Based on 144 user benchmarks.  Model: Samsung M393A1G40DB0-CPB 8x8GB

Outstanding average bench

The Samsung M393A1G40DB0-CPB 8x8GB averaged 5.2% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Samsung M393A1G40DB0-CPB 8x8GB near the top of the comparison list.


Avg. 16 Core Read Bench 50.7GB/s
Avg. 16 Core Mixed IO Bench 38.1GB/s

Average consistency

The range of scores (95th - 5th percentile) for the Samsung M393A1G40DB0-CPB 8x8GB is 47.1%. This is a relatively wide range which indicates that the Samsung M393A1G40DB0-CPB 8x8GB performs inconsistently under varying real world conditions.


Avg. 1 Core Read Bench 11.1GB/s
Avg. Physical RAM Latency 97.6ns

Average Bench

(Based on 144 samples)
Min Avg Max
30.6 MC Read 50.7 72.3
28.8 MC Write 37.7 45.6
31.5 MC Mixed 38.1 50.7
120% 42.1 GB/s
Min Avg Max
6.62 SC Read 11.1 14.3
7.05 SC Write 16.5 19.5
7.25 SC Mixed 16.8 20.5
42.3% 14.8 GB/s
Min Avg Max
66.8 Latency 97.6 157
41% 97.6 ns
User Benchmarks Bench Multi core Single core Latency
The fastest RAM (mainstream) averages a speed of 100%
8 of 16 slots used
64GB DIMM DDR4 clocked @ 2133 MHz
MC Read 54.4
MC Write 41
MC Mixed 39.5
128% 45 GB/s
SC Read 11
SC Write 19.3
SC Mixed 17.7
46% 16 GB/s
Latency 88.3
45% 88.3 ns
8 of 16 slots used
64GB DIMM DDR4 clocked @ 2133 MHz
MC Read 53.2
MC Write 42
MC Mixed 40.4
129% 45.2 GB/s
SC Read 10.6
SC Write 8.3
SC Mixed 17
34% 12 GB/s
Latency 155
26% 155 ns
8 of 16 slots used
64GB DIMM DDR4 clocked @ 2133 MHz
MC Read 48.6
MC Write 39.9
MC Mixed 36.7
119% 41.7 GB/s
SC Read 9.9
SC Write 19.3
SC Mixed 16
43% 15.1 GB/s
Latency 128
31% 128 ns
144 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,266,215 RAM Kits tested.

Typical M393A1G40DB0-CPB 8x8GB Builds (Compare 1,159 builds) See popular component choices, score breakdowns and rankings.
Gaming 34%
Sail boat
Desktop 71%
Workstation 70%

System: HP Z840 Workstation


Popular M393A1G40DB0-CPB 8x8GB systems:

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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.

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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.
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Memory Kit Rankings (Price vs Performance) November 2019 RAM Rankings.

We calculate effective RAM speed which measures performance for typical desktop users. Effective speed is adjusted by current cost per GB to yield value for money. 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 Memory Kits. [RAMPro]


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.


108 Memory Kits (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different RAM Kits perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

 Frequently Asked Questions

 Best User Rated

The Best.
Intel Core i5-9400F $148Nvidia GTX 1660S (Super) $234Crucial MX500 250GB $45
Intel Core i5-9600K $195AMD RX 590 $185Samsung 850 Evo 120GB $150
Intel Core i7-9700K $340Nvidia RTX 2060 $325Samsung 860 Evo 250GB $51
Seagate Barracuda 1TB (2016) $39Corsair Vengeance LPX DDR4 3000 C15 2x8GB $68SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $609SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 16GB $24
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