Average Bench: 28.2% (112th of 113)

Based on 2,469 user benchmarks.  Model: Kingston ACR256X64D3S1333C9 2x2GB

Very poor average bench

The Kingston ACR256X64D3S1333C9 2x2GB averaged 71.8% 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 121ns
Avg. 16 Core Mixed IO Bench 10.7GB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Kingston ACR256X64D3S1333C9 2x2GB is 37.7%. This is a relatively wide range which indicates that the Kingston ACR256X64D3S1333C9 2x2GB performs inconsistently under varying real world conditions.


Avg. 1 Core Write Bench 6.36GB/s
Avg. 1 Core Read Bench 6.99GB/s

Average Bench

(Based on 2,469 samples)
Min Avg Max
4 MC Read 9.73 18
3.4 MC Write 9.07 18.5
4.5 MC Mixed 10.7 16.4
28.1% 9.84 GB/s
Min Avg Max
2.1 SC Read 6.99 13.8
2.2 SC Write 6.36 14.3
2 SC Mixed 7.18 14.8
19.6% 6.85 GB/s
Min Avg Max
71.4 Latency 121 193
33.1% 121 ns
User Benchmarks Bench Multi core Single core Latency
The fastest RAM (mainstream) averages a speed of 100%
2 of 4 slots used
MC Read 7.4
MC Write 7
MC Mixed 9.4
23% 7.93 GB/s
SC Read 6.4
SC Write 5.1
SC Mixed 5.7
16% 5.73 GB/s
Latency 121
33% 121 ns
2 of 4 slots used
MC Read 7.2
MC Write 6.3
MC Mixed 8.2
21% 7.23 GB/s
SC Read 6.2
SC Write 5
SC Mixed 6.2
17% 5.8 GB/s
Latency 120
33% 120 ns
2 of 2 slots used
MC Read 6.5
MC Write 5.6
MC Mixed 6.1
17% 6.07 GB/s
SC Read 2.1
SC Write 2.6
SC Mixed 3.4
8% 2.7 GB/s
Latency 111
36% 111 ns
2 of 4 slots used
MC Read 3.3
MC Write 5.9
MC Mixed 9.5
18% 6.23 GB/s
SC Read 5.2
SC Write 4
SC Mixed 5.7
14% 4.97 GB/s
Latency 282
14% 282 ns
2,469 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 32,800,665 RAM Kits tested.

Typical ACR256X64D3S1333C9 2x2GB Builds (Compare 564 builds) See popular component choices, score breakdowns and rankings.
Gaming 2%
Tree trunk
Desktop 41%
Speed boat
Workstation 2%
Tree trunk

System: Acer Aspire 5742G

EDIT WITH CUSTOM PC BUILDER Value: 12% - Very poor Total price: $25

Popular ACR256X64D3S1333C9 2x2GB systems:

How Fast Is Your RAM? (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.

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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.
  • - Explore your best upgrade options with a virtual PC build.
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  • - Share your opinion by voting.
Memory Kit Rankings (Price vs Performance) September 2020 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.


113 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 $290Nvidia RTX 2070S (Super) $505Samsung 860 Evo 250GB $42
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $69SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $65SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
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