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CorsairCMK16GX4M2A2133C13(|R)
HyperXHX421C14FB(|2)K2/16
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Effective Speed 
+3%
Real World Speed
Performance profile from 26,171 user samples
Benchmark your RAM here
9,425 User Benchmarks
Best Bench: 80% @ 3067 MHz
Worst Bench: 41% @ 2133 MHz
Poor: 41% Great: 80%
SPEED RANK: 72nd / 104
16,746 User Benchmarks
Best Bench: 87% @ 3200 MHz
Worst Bench: 41% @ 2133 MHz
Poor: 41% Great: 87%
SPEED RANK: 68th / 104
Effective Speed
Effective RAM Speed 		70.3 % 72.4 % +3%
Average User Bench 
+3%
MC Read
Avg. 16 Core Read Bench 		25.9 GB/s 26.3 GB/s +2%
MC Write
Avg. 16 Core Write Bench 		26.6 GB/s 27.5 GB/s +3%
MC Mixed
Avg. 16 Core Mixed IO Bench 		22.2 GB/s 23.3 GB/s +5%
Peak Lab Bench 
+6%
MC Read
16 Core Read Bench 		29.9 GB/s 31.6 GB/s Slightly faster multi-core read.
+6%
MC Write
16 Core Write Bench 		30.2 GB/s 33.3 GB/s Slightly faster multi-core write.
+10%
MC Mixed
16 Core Mixed IO Bench 		26.5 GB/s 27.4 GB/s +3%
Value & Sentiment 
+2%
Market Share
Based on 7,820,966 RAM Kits tested.
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.14 % 0.19 % Much higher market share.
+36%
Value
Value For Money 		67.5 % Better value.
+28% 		52.9 %
User Rating
UBM User Rating 		62 % 65 % +5%
Price
Price (score) 		$175 Cheaper.
+23% 		$226
Nice To Haves 
+5%
Age
Newest 		42 Months 38 Months Slightly more recent.
+10%
SC Read
Avg. 1 Core Read Bench 		16.1 GB/s 16.1 GB/s
SC Write
Avg. 1 Core Write Bench 		25.7 GB/s 26.4 GB/s +3%
SC Mixed
Avg. 1 Core Mixed IO Bench 		21.3 GB/s 21.7 GB/s +2%
SC Read
1 Core Read Bench 		19.5 GB/s 20.3 GB/s +4%
SC Write
1 Core Write Bench 		30.4 GB/s 33.7 GB/s Slightly faster single-core write.
+11%
SC Mixed
1 Core Mixed IO Bench 		24.7 GB/s 26.7 GB/s Slightly faster single-core mixed.
+8%
Latency
Avg. Physical RAM Latency 		71.8 ns 70.1 ns +2%
Latency
Physical RAM Latency 		60 ns 59.2 ns +1%
Specifications 
Capacity
Capacity 		16GB 16GB
User Builds 
9,425
16,746
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money.

CHOOSE A COMPONENT:

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Memory Kit Rankings (Price vs Performance) April 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

Desktop Gaming Workstation

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 i7-8700K $330Nvidia GTX 1070 $447Samsung 850 Evo 250GB $80
AMD Ryzen 5 1600 $170Nvidia GTX 1060-6GB $310Samsung 850 Evo 500GB $137
Intel Core i7-7700K $290AMD RX 480 $350Samsung 850 Pro 256GB $163
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $190SanDisk Extreme 64GB $70
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $957SanDisk Extreme 32GB $45
Seagate Barracuda 2TB (2016) $60Corsair Vengeance LPX DDR4 3200 C16 2x8GB $204SanDisk Ultra Fit 32GB $12
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