Crucial 8GB DDR4 2666 CT8G4DFRA266

Crucial 8GB 288-Pin DDR4 2666 (PC4 21300) CT8G4DFRA266

Crucial 8GB 288-Pin DDR4 2666 (PC4 21300) CT8G4DFRA266

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  • Crucial 8GB 288-Pin DDR4 SDRAM DDR4 2666 (PC4 21300) Desktop Memory Model CT8G4DFRA266 CAS Latency: 19 Voltage: 1.20V Timing: 19-19-19 Buffered/Registered: Unbuffered Features: Speeds up to 2666 MT/s and faster data rates are expected to be available as DDR4 technology matures Increase bandwidth by up to 32% Reduce power consumption by up to 40% Faster burst access speeds for improved sequential data throughout Optimized for next generation processors and platforms

Specifications Overview

Model CT8G4DFRA266
Type 288-pin DIMM DDR4
Speed DDR4-2666 MHz
Size 8GB (1 x 8GB)
CAS Latency 19
Timing 19-19-19
First Word Latency 14.25 ns
Voltage 1.2 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)

2133 2400 2666 2800 2933 3000 3200 3300 3333 3400 3466 3600 3666 3733
13 12.19 10.83 9.75 9.29 8.86 8.67 8.13 7.88 7.80 7.65 7.50 7.22 7.09 6.96
14 13.13 11.67 10.50 10.00 9.55 9.33 8.75 8.48 8.40 8.24 8.08 7.78 7.64 7.50
15 14.06 12.50 11.25 10.71 10.23 10.00 9.38 9.09 9.00 8.82 8.66 8.33 8.18 8.04
16 15.00 13.33 12.00 11.43 10.91 10.67 10.00 9.70 9.60 9.41 9.23 8.89 8.73 8.57
17 15.94 14.17 12.75 12.14 11.59 11.33 10.63 10.30 10.20 10.00 9.81 9.44 9.27 9.11
18 16.88 15.00 13.50 12.86 12.27 12.00 11.25 10.91 10.80 10.59 10.39 10.00 9.82 9.64
19 17.82 15.83 14.25 13.57 12.96 12.67 11.88 11.52 11.40 11.18 10.96 10.56 10.37 10.18
20 18.75 16.67 15.00 14.29 13.64 13.33 12.50 12.12 12.00 11.76 11.54 11.11 10.91 10.72
21 19.69 17.50 15.75 15.00 14.32 14.00 13.13 12.73 12.60 12.35 12.12 11.67 11.46 11.25
22 20.63 18.33 16.50 15.71 15.00 14.67 13.75 13.33 13.20 12.94 12.69 12.22 12.00 11.79
23 21.57 19.17 17.25 16.43 15.68 15.33 14.38 13.94 13.80 13.53 13.27 12.78 12.55 12.32
24 22.50 20.00 18.00 17.14 16.37 16.00 15.00 14.55 14.40 14.12 13.85 13.33 13.09 12.86
25 23.44 20.83 18.75 17.86 17.05 16.67 15.63 15.15 15.00 14.71 14.43 13.89 13.64 13.39
CAS (clock cycles) Lower latency means faster memory.

Cheapest alternatives with equal or better performance

-0.19ns Latency

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