Corsair VENGEANCE LPX 16GB (4 x 4GB) DDR4 3866MHz CMK16GX4M4B3866C18R

Corsair VENGEANCE LPX 16GB (4 x 4GB) DDR4 3866MHz C18 Memory Kit Red CMK16GX4M4B3866C18R

Corsair VENGEANCE LPX 16GB (4 x 4GB) DDR4 3866MHz C18 Memory Kit Red CMK16GX4M4B3866C18R

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  • VENGEANCE LPX memory is designed for high-performance overclocking. The heatspreader is made of pure aluminum for faster heat dissipation, and the eight-layer PCB helps manage heat and provides superior overclocking headroom.

Specifications Overview

Model CMK16GX4M4B3866C18R
Type 288-pin DIMM DDR4
Speed DDR4-3866 MHz
Size 16GB (4 x 4GB)
CAS Latency 18
Timing 18-22-22-40
First Word Latency 9.31 ns
Voltage 1.35 V
Heat Spreader
ECC Support

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)

3333 3400 3466 3600 3666 3733 3800 3866 4000 4133 4200 4266 4300 4333
16 9.60 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
17 10.20 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
18 10.80 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
19 11.40 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
20 12.00 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
21 12.60 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
22 13.20 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
23 13.80 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
24 14.40 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
25 15.00 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
CAS (clock cycles) Lower latency means faster memory.

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