HyperXHX421C14FBK4/32
$165
CorsairCMK16GX4M2B3000C15(|B|R)
Real World Speed
Performance profile from 49,942 user samples
1,489 User Benchmarks
Best Bench: 113% @ 2176 MHz
Worst Bench: 65% @ 2000 MHz
Poor: 65% Great: 113%
SPEED RANK: 30th / 70
48,453 User Benchmarks
Best Bench: 104% @ 3200 MHz
Worst Bench: 57% @ 1067 MHz
Poor: 57% Great: 104%
SPEED RANK: 24th / 70
Effective Speed
Effective RAM Speed
80.5 % -5% 84.4 % +5%
MC Read
Avg. 16 Core Read Bench
29.4 GB/s -10% 32.4 GB/s Slightly faster multi-core read.
+10%
MC Write
Avg. 16 Core Write Bench
31.3 GB/s -2% 31.9 GB/s +2%
MC Mixed
Avg. 16 Core Mixed IO Bench
27.1 GB/s Slightly faster multi-core mixed.
+5%
25.7 GB/s -5%
MC Read
16 Core Read Bench
43.2 GB/s Slightly faster multi-core read.
+5%
41.1 GB/s -5%
MC Write
16 Core Write Bench
48.4 GB/s Faster multi-core write.
+21%
39.9 GB/s -21%
MC Mixed
16 Core Mixed IO Bench
41.9 GB/s Faster multi-core mixed.
+22%
34.3 GB/s -22%
Market Share
Based on 6,295,071 RAM Kits tested.
Market Share
Market Share (trailing 30 days)
0.06 % -2,067% 1.3 % Insanely higher market share.
+2,067%
Value
Value For Money
76.6 % Hugely better value.
+143%
31.5 % -143%
User Rating
UBM User Rating
55 % -31% 72 % Much more popular.
+31%
Price
Price (score)
$165 Cheaper.
+20%
$205 -20%
Age
Newest
46 Months -15% 39 Months More recent.
+15%
SC Read
Avg. 1 Core Read Bench
16.3 GB/s -19% 19.4 GB/s Faster single-core read.
+19%
SC Write
Avg. 1 Core Write Bench
26.2 GB/s -21% 31.8 GB/s Faster single-core write.
+21%
SC Mixed
Avg. 1 Core Mixed IO Bench
22.1 GB/s -15% 25.5 GB/s Faster single-core mixed.
+15%
SC Read
1 Core Read Bench
19.9 GB/s -20% 23.9 GB/s Faster single-core read.
+20%
SC Write
1 Core Write Bench
31.7 GB/s -32% 41.9 GB/s Much faster single-core write.
+32%
SC Mixed
1 Core Mixed IO Bench
25.9 GB/s -20% 31.1 GB/s Faster single-core mixed.
+20%
Latency
Avg. Physical RAM Latency
69.4 ns -6% 65.4 ns Slightly lower access latency.
+6%
Latency
Physical RAM Latency
61.5 ns -20% 49 ns Lower access latency.
+20%
Capacity
Capacity
32GB 16GB
Memory Kit Rankings (Price vs Performance) January 2018 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]

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 (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

 Best User Rated

The Best.
CPUGPUSSD
Intel Core i7-7700K $280Nvidia GTX 1070 $430Samsung 850 Evo 250GB $90
AMD Ryzen 7 1700 $290Nvidia GTX 1060-6GB $275Samsung 850 Evo 500GB $140
Intel Core i5-7600K $210AMD RX 480 $400Samsung 850 Pro 256GB $110
HDDRAMUSB
Seagate Barracuda 1TB (2016) $45Corsair Vengeance LPX DDR4 3000 C15 2x8GB $205SanDisk Extreme 64GB $65
Seagate Barracuda 3TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $931SanDisk Extreme 32GB $22
Seagate Barracuda 7200.14 1TB $51Corsair Vengeance LPX DDR4 3200 C16 2x8GB $220SanDisk Ultra Fit 32GB $12
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