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Kingston HX421C14FB/4 4GB
Kingston KF556C40-16 16GB

Kingston HX421C14FB/4 4GB vs Kingston KF556C40-16 16GB

Overall score
star star star star star
Kingston HX421C14FB/4 4GB

Kingston HX421C14FB/4 4GB

Overall score
star star star star star
Kingston KF556C40-16 16GB

Kingston KF556C40-16 16GB

Differences Specifications Comments

Differences

Kingston HX421C14FB/4 4GB Reasons to consider
Kingston HX421C14FB/4 4GB
Report a bug
  • Faster reading speed, GB/s
    16.8 left arrow 14.9
    Average value in the tests
Kingston KF556C40-16 16GB Reasons to consider
Kingston KF556C40-16 16GB
Report a bug
  • Below the latency in the PassMark tests, ns
    26 left arrow 30
    Around -15% lower latency
  • Faster write speed, GB/s
    13.0 left arrow 12.2
    Average value in the tests
  • Higher memory bandwidth, mbps
    19200 left arrow 17000
    Around 1.13 higher bandwidth

Specifications

Complete list of technical specifications
Kingston HX421C14FB/4 4GB
Kingston KF556C40-16 16GB
Main characteristics
  • Memory type
    DDR4 left arrow DDR5
  • Latency in PassMark, ns
    30 left arrow 26
  • Read speed, GB/s
    16.8 left arrow 14.9
  • Write speed, GB/s
    12.2 left arrow 13.0
  • Memory bandwidth, mbps
    17000 left arrow 19200
Other
  • Description
    PC4-17000, 1.2V, CAS Supported: 9 11 12 13 14 15 16 left arrow PC5-19200, 1.1V, CAS Supported: 22 26 28 30 32 36 40 42
  • Timings / Clock speed
    14-14-14, 15-15-15, 16-16-16 / 2133 MHz left arrow no data / 2400 MHz
  • Ranking PassMark (The more the better)
    2730 left arrow 3458

Kingston HX421C14FB/4 4GB RAM comparisons

Crucial Technology BLS4G4D240FSE.8FBD 4GB
Hoodisk Electronics Co Ltd GKE160SO102408-2666 16GB

Kingston KF556C40-16 16GB RAM comparisons

G Skill Intl F4-3200C16-8GVKB 8GB
Corsair CM4B16G4J2400A16K2-O 16GB
RAM Latency Calculator
Calculate Ram speed clock interval in nanosecond format
RAM 1
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