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CorsairCMK16GX4M2A2133C13(|R)
HyperXHX421C14FB(|2)K2/16
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Effective Speed 
+4%
Real World Speed
Performance profile from 20,371 user samples
Benchmark your RAM here
12,031 User Benchmarks
Best Bench: 80% @ 1467 MHz
Worst Bench: 41% @ 2133 MHz
Poor: 41% Great: 80%
SPEED RANK: 72nd / 104
8,340 User Benchmarks
Best Bench: 82% @ 3018 MHz
Worst Bench: 42% @ 1867 MHz
Poor: 42% Great: 82%
SPEED RANK: 66th / 104
Effective Speed
Effective RAM Speed 		70.2 % 72.9 % +4%
Average User Bench 
+4%
MC Read
Avg. 16 Core Read Bench 		26.1 GB/s 26.7 GB/s +2%
MC Write
Avg. 16 Core Write Bench 		26.5 GB/s 27.4 GB/s +3%
MC Mixed
Avg. 16 Core Mixed IO Bench 		22.2 GB/s 23.4 GB/s Slightly faster multi-core mixed.
+5%
Peak Lab Bench 
+0%
MC Read
16 Core Read Bench 		30.6 GB/s +1% 30.3 GB/s
MC Write
16 Core Write Bench 		30 GB/s 30.7 GB/s +2%
MC Mixed
16 Core Mixed IO Bench 		26.9 GB/s +1% 26.6 GB/s
Value & Sentiment 
+10%
Market Share
Based on 8,750,778 RAM Kits tested.
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.16 % 0.19 % Higher market share.
+19%
Value
Value For Money 		71.9 % Much better value.
+35% 		53.1 %
User Rating
UBM User Rating 		62 % 65 % +5%
Price
Price (score) 		$164 Cheaper.
+28% 		$226
Nice To Haves 
+4%
Age
Newest 		44 Months 40 Months Slightly more recent.
+9%
SC Read
Avg. 1 Core Read Bench 		16.2 GB/s 16.4 GB/s +1%
SC Write
Avg. 1 Core Write Bench 		25.4 GB/s 26.7 GB/s Slightly faster single-core write.
+5%
SC Mixed
Avg. 1 Core Mixed IO Bench 		21.1 GB/s 22.2 GB/s Slightly faster single-core mixed.
+5%
SC Read
1 Core Read Bench 		20.2 GB/s Slightly faster single-core read.
+5% 		19.2 GB/s
SC Write
1 Core Write Bench 		30.4 GB/s 31.1 GB/s +2%
SC Mixed
1 Core Mixed IO Bench 		24.9 GB/s 26.5 GB/s Slightly faster single-core mixed.
+6%
Latency
Avg. Physical RAM Latency 		73.6 ns 68.9 ns Slightly lower access latency.
+6%
Latency
Physical RAM Latency 		60.2 ns 59.6 ns +1%
Specifications 
Capacity
Capacity 		16GB 16GB
User Builds 
12,031
8,340
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) June 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 $320Nvidia GTX 1070 $413Samsung 850 Evo 250GB $104
AMD Ryzen 5 1600 $175Nvidia GTX 1060-6GB $89Samsung 850 Evo 500GB $138
Intel Core i5-8600K $235AMD RX 480 $280Samsung 850 Pro 256GB $125
HDDRAMUSB
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $177SanDisk Extreme 64GB $44
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $911SanDisk Extreme 32GB $30
Seagate Barracuda 2TB (2016) $59HyperX Fury DDR4 2133 C14 2x8GB $226SanDisk Ultra Fit 32GB $12
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