Average Bench: 36.2% (105th of 108)

Based on 511 user benchmarks.  Model: Adata AO1P21FC4R1-B2MS 1x4GB

Poor average bench

The Adata AO1P21FC4R1-B2MS 1x4GB averaged 63.7% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. Physical RAM Latency 81.8ns
Avg. 16 Core Read Bench 13.4GB/s

Very good consistency

The range of scores (95th - 5th percentile) for the Adata AO1P21FC4R1-B2MS 1x4GB is just 10.2%. This is a relatively narrow range which indicates that the Adata AO1P21FC4R1-B2MS 1x4GB performs reasonably consistently under varying real world conditions.


Avg. 1 Core Read Bench 9.94GB/s
Avg. 1 Core Mixed IO Bench 10.4GB/s

Average Bench

(Based on 511 samples)
Min Avg Max
11.4 MC Read 13.4 14.5
10 MC Write 12.5 14
8.96 MC Mixed 10.4 11.2
34.6% 12.1 GB/s
Min Avg Max
6.42 SC Read 9.94 11.7
6.62 SC Write 11.5 13.9
5.7 SC Mixed 10.4 12.4
30.3% 10.6 GB/s
Min Avg Max
64.7 Latency 81.8 135
48.9% 81.8 ns
User Benchmarks Bench Multi core Single core Latency
The fastest RAM (mainstream) averages a speed of 100%
1 of 4 slots used
4GB SODIMM DDR4 clocked @ 2133 MHz
MC Read 14.4
MC Write 13
MC Mixed 11
36% 12.8 GB/s
SC Read 9.8
SC Write 13.4
SC Mixed 10.6
32% 11.3 GB/s
Latency 78.1
51% 78.1 ns
1 of 4 slots used
4GB SODIMM DDR4 clocked @ 2133 MHz
MC Read 11.4
MC Write 9.2
MC Mixed 8.5
28% 9.7 GB/s
SC Read 4.4
SC Write 10.3
SC Mixed 8.5
22% 7.73 GB/s
Latency 146
27% 146 ns
511 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 21,943,433 RAM Kits tested.

Typical AO1P21FC4R1-B2MS 1x4GB Builds (Compare 3,130 builds) See popular component choices, score breakdowns and rankings.
Gaming 13%
Tree trunk
Desktop 38%
Jet ski
Workstation 16%

System: Acer Aspire E5-575

EDIT WITH CUSTOM PC BUILDER Value: 12% - Very poor Total price: $90

Popular AO1P21FC4R1-B2MS 1x4GB 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.
  • - Compare your components to the current market leaders.
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Memory Kit Rankings (Price vs Performance) December 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.
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Intel Core i7-9700K $359Nvidia RTX 2060 $324Samsung 850 Pro 512GB $230
Seagate Barracuda 1TB (2016) $32Corsair Vengeance LPX DDR4 3200 C16 2x8GB $65SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $613SanDisk Extreme 16GB $24
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