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CorsairCMK16GX4M2A2133C13(|R)
HyperXHX421C14FB(|2)K2/16
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Effective Speed 
+3%
Real World Speed
Performance profile from 18,414 user samples
Benchmark your RAM here
6,765 User Benchmarks
Best Bench: 79% @ 3000 MHz
Worst Bench: 41% @ 2133 MHz
Poor: 41% Great: 79%
SPEED RANK: 44th / 70
11,649 User Benchmarks
Best Bench: 80% @ 3000 MHz
Worst Bench: 42% @ 1867 MHz
Poor: 42% Great: 80%
SPEED RANK: 39th / 70
Effective Speed
Effective RAM Speed 		70.1 % -3% 72.5 % +3%
Average User Bench 
+3%
MC Read
Avg. 16 Core Read Bench 		25.7 GB/s -2% 26.3 GB/s +2%
MC Write
Avg. 16 Core Write Bench 		26.6 GB/s -3% 27.4 GB/s +3%
MC Mixed
Avg. 16 Core Mixed IO Bench 		22.3 GB/s -5% 23.4 GB/s +5%
Peak Lab Bench 
+0%
MC Read
16 Core Read Bench 		29.9 GB/s +1% 29.5 GB/s -1%
MC Write
16 Core Write Bench 		29.8 GB/s -1% 30.2 GB/s +1%
MC Mixed
16 Core Mixed IO Bench 		26.4 GB/s 0% 26.4 GB/s 0%
Value & Sentiment 
+12%
Market Share
Based on 4,172,514 RAM Kits tested.
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.22 % -50% 0.33 % Much higher market share.
+50%
Value
Value For Money 		44 % +3% 42.9 % -3%
User Rating
UBM User Rating 		62 % -5% 65 % +5%
Price
Price (score) 		$134 +4% $140 -4%
Nice To Haves 
+4%
Age
Newest 		34 Months -12% 30 Months Slightly more recent.
+12%
SC Read
Avg. 1 Core Read Bench 		15.9 GB/s -3% 16.3 GB/s +3%
SC Write
Avg. 1 Core Write Bench 		25.6 GB/s -4% 26.5 GB/s +4%
SC Mixed
Avg. 1 Core Mixed IO Bench 		21.1 GB/s -3% 21.8 GB/s +3%
SC Read
1 Core Read Bench 		19.4 GB/s -1% 19.5 GB/s +1%
SC Write
1 Core Write Bench 		30.4 GB/s -2% 30.9 GB/s +2%
SC Mixed
1 Core Mixed IO Bench 		25.2 GB/s -3% 26 GB/s +3%
Latency
Avg. Physical RAM Latency 		72.8 ns -5% 69.4 ns +5%
Latency
Physical RAM Latency 		60.7 ns -1% 60.3 ns +1%
Specifications 
Capacity
Capacity 		16GB 16GB
User Builds 
6,765
11,649
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money.

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Memory Kit Rankings (Price vs Performance) August 2017 RAM Rankings.

Welcome to our DDR4 Memory Kit comparison. We calculate effective RAM speed which measures performance for typical desktop users. Effective speed is adjusted by cost per GB to yield value for money. Calculated values don't always tell the whole picture so we check them against thousands of individual user ratings. The customizable table below combines these factors and more to bring you the definitive list of top Memory Kits. Share your opinion by voting. [RAMPro]

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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 (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - 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 highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.

 Frequently Asked Questions

Computer Components FAQ
What is the UBM value for money rating?
What is UBM Effective Speed?
Thunderbolt speed?
Are USB 3.0 cables different?
USB 3.0 vs 2.0 speed difference?
Why buy USB 3.0 today?
USB 3.0 / 4.0 release dates and max speeds?
Graphics Cards
How to force Optimus or Switchable discrete GPUs?
What are the UBM DX11 GPU tests?
What are the UBM DX10 GPU tests?
What are the UBM DX09 GPU tests?
What is the Splatting GPU benchmark?
What is the Gravity (NBody) GPU benchmark?
Memory Kits
What is the RAM value for money rating?
What is the effective RAM speed index?
What is the system memory latency ladder?
ALL FAQs »

 Best User Rated
The Best.
CPUGPUSSD
Intel Core i7-7700K $315Nvidia GTX 1070 $410Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $300AMD RX 480 $265Samsung 850 Pro 256GB $117
Intel Core i5-7600K $235Nvidia GTX 1060-6GB $270Samsung 850 Evo 500GB $150
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45G.SKILL Trident Z DDR4 3200 C14 4x16GB $718SanDisk Extreme 64GB $45
Seagate Barracuda 3TB (2016) $77Corsair Vengeance LPX DDR4 3000 C15 2x8GB $140SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $57HyperX Fury DDR4 2133 C14 2x8GB $140SanDisk Ultra Fit 32GB $13
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