CorsairCMK16GX4M4A2800C16(|B|R)
HyperXHX421C14FB(|2)K2/16
Real World Speed
Performance profile from 19,477 user samples
1,159 User Benchmarks
Best Bench: 120% @ 1600 MHz
Worst Bench: 68% @ 2133 MHz
Poor: 68% Great: 120%
SPEED RANK: 15th / 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
93.6 % Faster effective speed.
+29%
72.3 %
MC Read
Avg. 16 Core Read Bench
35.4 GB/s Much faster multi-core read.
+35%
26.3 GB/s
MC Write
Avg. 16 Core Write Bench
36.9 GB/s Much faster multi-core write.
+36%
27.2 GB/s
MC Mixed
Avg. 16 Core Mixed IO Bench
32 GB/s Much faster multi-core mixed.
+38%
23.2 GB/s
MC Read
16 Core Read Bench
47.9 GB/s Much faster multi-core read.
+46%
32.9 GB/s
MC Write
16 Core Write Bench
54.5 GB/s Much faster multi-core write.
+61%
33.8 GB/s
MC Mixed
16 Core Mixed IO Bench
43.4 GB/s Much faster multi-core mixed.
+54%
28.1 GB/s
Market Share
Based on 9,163,649 RAM Kits tested.
Market Share
Market Share (trailing 30 days)
0.01 % 0.09 % Hugely higher market share.
+800%
Value
Value For Money
48.3 % 54.6 % Slightly better value.
+13%
User Rating
UBM User Rating
54 % 65 % More popular.
+20%
Price
Price (score)
$282 $219 Cheaper.
+22%
Age
Newest
47 Months 41 Months Slightly more recent.
+13%
SC Read
Avg. 1 Core Read Bench
17 GB/s +5% 16.2 GB/s
SC Write
Avg. 1 Core Write Bench
27 GB/s +2% 26.4 GB/s
SC Mixed
Avg. 1 Core Mixed IO Bench
23 GB/s Slightly faster single-core mixed.
+6%
21.7 GB/s
SC Read
1 Core Read Bench
22.6 GB/s Slightly faster single-core read.
+12%
20.1 GB/s
SC Write
1 Core Write Bench
40.7 GB/s Faster single-core write.
+21%
33.7 GB/s
SC Mixed
1 Core Mixed IO Bench
30.4 GB/s Slightly faster single-core mixed.
+12%
27.1 GB/s
Latency
Avg. Physical RAM Latency
66.7 ns +5% 70.2 ns
Latency
Physical RAM Latency
52.7 ns Slightly lower access latency.
+11%
59.2 ns
Capacity
Capacity
16GB 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 $318Nvidia GTX 1070 $413Samsung 850 Evo 250GB $100
AMD Ryzen 5 1600 $150Nvidia GTX 1060-6GB $289Samsung 850 Evo 500GB $121
Intel Core i7-7700K $275AMD RX 480 $280Samsung 850 Pro 256GB $160
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $176SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $74G.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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