HyperXHX421C14FBK2/8
HyperXHX421C14FB(|2)K2/16
Real World Speed
Performance profile from 36,702 user samples
18,384 User Benchmarks
Best Bench: 82% @ 3467 MHz
Worst Bench: 44% @ 2133 MHz
Poor: 44% Great: 82%
SPEED RANK: 70th / 104
18,318 User Benchmarks
Best Bench: 89% @ 1533 MHz
Worst Bench: 40% @ 2133 MHz
Poor: 40% Great: 89%
SPEED RANK: 68th / 104
Effective Speed
Effective RAM Speed
71.2 % 72.3 % +2%
MC Read
Avg. 16 Core Read Bench
26.6 GB/s +1% 26.3 GB/s
MC Write
Avg. 16 Core Write Bench
27.1 GB/s 27.2 GB/s +0%
MC Mixed
Avg. 16 Core Mixed IO Bench
22.1 GB/s 23.2 GB/s +5%
MC Read
16 Core Read Bench
31.4 GB/s 32.9 GB/s +5%
MC Write
16 Core Write Bench
31.2 GB/s 33.8 GB/s Slightly faster multi-core write.
+8%
MC Mixed
16 Core Mixed IO Bench
27.5 GB/s 28.1 GB/s +2%
Market Share
Based on 9,140,520 RAM Kits tested.
Market Share
Market Share (trailing 30 days)
0.27 % Higher market share.
+23%
0.22 %
Value
Value For Money
62.5 % Slightly better value.
+15%
54.6 %
User Rating
UBM User Rating
57 % 65 % Slightly more popular.
+14%
Price
Price (score)
$95 Much cheaper.
+57%
$219
Age
Newest
41 Months 41 Months
SC Read
Avg. 1 Core Read Bench
16.1 GB/s 16.2 GB/s +1%
SC Write
Avg. 1 Core Write Bench
24.8 GB/s 26.4 GB/s Slightly faster single-core write.
+6%
SC Mixed
Avg. 1 Core Mixed IO Bench
21 GB/s 21.7 GB/s +3%
SC Read
1 Core Read Bench
20.4 GB/s +1% 20.1 GB/s
SC Write
1 Core Write Bench
29.8 GB/s 33.7 GB/s Slightly faster single-core write.
+13%
SC Mixed
1 Core Mixed IO Bench
24.5 GB/s 27.1 GB/s Slightly faster single-core mixed.
+11%
Latency
Avg. Physical RAM Latency
71.6 ns 70.2 ns +2%
Latency
Physical RAM Latency
58.3 ns +2% 59.2 ns
Capacity
Capacity
8GB 16GB
Memory Kit Rankings (Price vs Performance) July 2018 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]

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Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • 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 and price per GB.
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.
  • - 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.
  • - Share your opinion by voting.

 Frequently Asked Questions

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-8700K $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $85
AMD Ryzen 5 1600 $160Nvidia GTX 1060-6GB $290Samsung 850 Evo 500GB $121
Intel Core i7-7700K $300AMD RX 480 $280Samsung 850 Pro 256GB $162
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $166SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $951SanDisk Extreme 32GB $46
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $219SanDisk Ultra Fit 32GB $12
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