Average Bench: 38.1% (108th of 113)

Based on 40 user benchmarks.  Model: Kingston 99U5471-001.A00LF 9905471-001.A00LF 4GB

Poor average bench

The Kingston 99U5471-001.A00LF 9905471-001.A00LF 4GB averaged 61.8% 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 80.1ns
Avg. 16 Core Read Bench 13.9GB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Kingston 99U5471-001.A00LF 9905471-001.A00LF 4GB is 30.9%. This is a relatively narrow range which indicates that the Kingston 99U5471-001.A00LF 9905471-001.A00LF 4GB performs reasonably consistently under varying real world conditions.


Avg. 1 Core Read Bench 9.77GB/s
Avg. 1 Core Write Bench 10.3GB/s

Average Bench

(Based on 40 samples)
Min Avg Max
6 MC Read 13.9 20
3.5 MC Write 12.4 19.4
4.7 MC Mixed 12.9 16.9
37.3% 13 GB/s
Min Avg Max
4.9 SC Read 9.77 16.6
3.9 SC Write 10.3 18.2
5.5 SC Mixed 10.7 17.1
29.3% 10.3 GB/s
Min Avg Max
60 Latency 80.1 125
50% 80.1 ns
User Benchmarks Bench Multi core Single core Latency
The fastest RAM (mainstream) averages a speed of 100%
1333, 1333 MHz
2048, 2048 MB
MC Read 20
MC Write 17.3
MC Mixed 15.4
50% 17.6 GB/s
SC Read 8.4
SC Write 7.1
SC Mixed 10.3
25% 8.6 GB/s
Latency 72.6
55% 72.6 ns
1333, 1333 MHz
2048, 2048 MB
MC Read 18.6
MC Write 15.3
MC Mixed 14
46% 16 GB/s
SC Read 8.3
SC Write 5.9
SC Mixed 9.6
23% 7.93 GB/s
Latency 76
53% 76 ns
1333, 1333 MHz
2048, 2048 MB
MC Read 18.2
MC Write 14.8
MC Mixed 13.8
45% 15.6 GB/s
SC Read 7.9
SC Write 5.7
SC Mixed 8.7
21% 7.43 GB/s
Latency 80
50% 80 ns
40 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 44,341,296 RAM Kits tested.

Typical 99U5471-001.A00LF 9905471-001.A00LF 4GB Builds (Compare 36 builds) See popular component choices, score breakdowns and rankings.
Gaming 3%
Tree trunk
Desktop 40%
Speed boat
Workstation 2%
Tree trunk

Motherboard: Biostar TA75A+

EDIT WITH CUSTOM PC BUILDER Value: 13% - Very poor Total price: $489

Popular 99U5471-001.A00LF 9905471-001.A00LF 4GB compatible motherboards:

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.

UserBenchmark of the month

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.
  • - SkillBench (space shooter) tests user input accuracy.
  • - 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.
  • - Compare your in-game FPS to other users with your hardware.
Memory Kit Rankings (Price vs Performance) July 2021 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

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Intel Core i7-10700K $320Nvidia GTX 1660S (Super) $240Samsung 850 Evo 120GB $78
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WD Blue 1TB (2012) $34Corsair Vengeance LPX DDR4 3000 C15 2x8GB $80SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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