According to the latest report, it appears that Nvidia has some trouble running 144+Hz on desktop as the power consumption can rise to a much higher level than on AMD's high-end Radeon graphics cards.

According to a report from PC Perspective, which noticed a power spike when testing ASUS' ROG Swift PG27799Q 165Hz G-Sync monitor, the power consumption of the GTX 980 Ti increased from 76.6W to 201W when running that same monitor at 165Hz refresh rate.

PC Perspective also tested the same thing on AMD, discovering that the power consumption on the R9 Fury GPU does not behave the same way as it consumes much less power on desktop even when running at higher refresh rate.

It appears that in order to run at 144+Hz at 1440p resolution, Nvidia GTX 980 Ti had to increase the GPU clock speed, resulting in higher power consumption, something that does not happen on the Radeon graphics card.

Currently, it is unknown if this is related to the G-Sync module, drivers or how the actual Maxwell GPU deals with higher refresh rate.






Source: PCPer.com.