Memory kits / Comparison

Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 vs Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14

RAM · Corsair

Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19

2×4 GB · DDR4 · 4000 MHz · CL19
GEAR SCORE 66.0 / 100Good
Capacity35
Speed76
Latency93
Generation62
VS
RAM · Kingston

Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14

4×16 GB · DDR4 · 2133 MHz · CL14
GEAR SCORE 66.0 / 100Good
Capacity100
Speed32
Latency68
Generation62
Verdict

Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 and Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14 are neck and neck on specs: gear scores 66 and 66.

  • Total capacity: Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14 leads (64 GB vs 8 GB).
  • Speed: Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 leads (4,000 MHz vs 2,133 MHz).
  • CAS latency: Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14 leads (CL14 vs CL19).
  • Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 has lower true latency (9.5 ns vs 13.1 ns; speed and CL combined).
Pick this

Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19

If you care most about speed, true latency.

Pick this

Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14

If you care most about total capacity, cAS latency.

Spec-by-spec comparison

Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14
66Gear score66
DDR4TypeDDR4
8 GBTotal capacity64 GB
2×4 GBKit4×16 GB
4,000 MHzSpeed2,133 MHz
CL19CAS latencyCL14

The gear score is computed from specifications only (e.g. for a mouse: weight, sensor, polling rate, connection and release year). It isn’t a lab test and doesn’t measure personal preferences like shape or grip.

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FAQ

Is Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 or Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14 better?

Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 and Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14 are neck and neck on specs: gear scores 66 and 66. Total capacity: Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14 leads (64 GB vs 8 GB). Speed: Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 leads (4,000 MHz vs 2,133 MHz). CAS latency: Kingston HX421S14IBK4/32 64GB (4x16GB) DDR4 2133 CL14 leads (CL14 vs CL19).

Which one is faster?

Speed: Corsair Dominator Platinum 8GB (2x4GB) DDR4 4000 CL19 leads (4,000 MHz vs 2,133 MHz).