Power consumption (IGP)
Lastly we are covering the power consumption. We have heard a lot about the lower power consumption of DDR4, but according to our test DDR4 isn't any more power efficient than DDR3 in idle - at least on our custom settings at 1600 MHz. On a higher clock speed DDR4 of course uses more power, but that is fairly obvious. It's a shame that the motherboard we used did not support DDR3 memory with higher clock speeds.
It turns out that under load DDR4 is a bit more power efficient, though the differences are only marginal.
|Benchmark||DDR3-1600||DDR4-1600||DDR4-2133||DDR3 vs. DDR4||DDR3-1600 vs. DDR4-2133|
|Power consumption - Cinebench 15 (max.)||97.7||96.5||97.1||1.2%||0.6%|
|Power consumption- 3DMark Cloud Gate (avg.)||57.3||56.3||57.3||1.7%||0.0%|
|Power consumption - Idle||28.8||28.8||29.4||0.0%||-2.1%|