Patriot Viper Steel Series DDR4 16GB (2x8GB) 4000MHz RAM

Patriot Viper Steel Series DDR4 16GB (2x8GB) 4000MHz PVS416G400C9K

Patriot Viper Steel Series DDR4 16GB (2x8GB) 4000MHz PVS416G400C9K

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  • Capacity: 16GB (2 x 8GB) DDR4
  • Base Frequency: PC4-17000 (2133MHz); Up to PC4-32000 (4000MHz) with XMP 2.0 enabled
  • Base Timings: 15-15-15-36; Overclock timing with XMP 2.0 enabled Tested Timings: 19-19-19-39
  • COMPATIBILITY: Tested on the latest Intel & AMD platforms
  • Custom design and series: All aluminum heat shield featuring gunmetal grey sides with diamond- cut viper logo and black top.

Specifications Overview

Model PVS416G400C9K
Type 288-pin DIMM DDR4
Speed DDR4-4000 MHz
Size 16GB (2 x 8GB)
CAS Latency 19
Timing 19-19-19-39
First Word Latency 9.5 ns
Voltage 1.35 V
Heat Spreader
ECC Support
Color Gunmetal Grey
Samsung B-Die

RAM First Word Latency Table (nanoseconds)

Latency is measured in nanoseconds, which is a combination of frequency and CAS. Both frequency increases and latency decreases result in better system performance (when latency is the same, always prefer higher frequency if possible).

Frequency (MT/s)

3400 3466 3600 3666 3733 3800 3866 4000 4133 4200 4266 4300 4333 4400
16 9.41 9.23 8.89 8.73 8.57 8.42 8.28 8.00 7.74 7.62 7.50 7.44 7.39 7.27
17 10.00 9.81 9.44 9.27 9.11 8.95 8.79 8.50 8.23 8.10 7.97 7.91 7.85 7.73
18 10.59 10.39 10.00 9.82 9.64 9.47 9.31 9.00 8.71 8.57 8.44 8.37 8.31 8.18
19 11.18 10.96 10.56 10.37 10.18 10.00 9.83 9.50 9.19 9.05 8.91 8.84 8.77 8.64
20 11.76 11.54 11.11 10.91 10.72 10.53 10.35 10.00 9.68 9.52 9.38 9.30 9.23 9.09
21 12.35 12.12 11.67 11.46 11.25 11.05 10.86 10.50 10.16 10.00 9.85 9.77 9.69 9.55
22 12.94 12.69 12.22 12.00 11.79 11.58 11.38 11.00 10.65 10.48 10.31 10.23 10.15 10.00
23 13.53 13.27 12.78 12.55 12.32 12.11 11.90 11.50 11.13 10.95 10.78 10.70 10.62 10.45
24 14.12 13.85 13.33 13.09 12.86 12.63 12.42 12.00 11.61 11.43 11.25 11.16 11.08 10.91
25 14.71 14.43 13.89 13.64 13.39 13.16 12.93 12.50 12.10 11.90 11.72 11.63 11.54 11.36
CAS (clock cycles) Lower latency means faster memory.

Cheapest alternatives with equal or better performance

-0.06ns Latency

Same latency

-0.75ns Latency


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