Considering the low efficiency of the reference cooler, we set its fan at the maximum speed for our overclocking experiments. We overclocked our GeForce GTX 760 using EVGA Precision X version 4.2.0. After setting the Power and Temperature Targets at their maximums, we managed to increase the card’s GPU and memory frequencies by 115 and 1120 MHz, respectively, without any stability and image quality issues.
The resulting clock rates of the overclocked Nvidia GeForce GTX 760 were 1095/1148/7128 MHz:
The GPU frequency of the overclocked card would peak up to 1241 MHz whereas the peak GPU temperature was 76°C.
We measured the power consumption of our testbed equipped with different graphics cards using a multifunctional Zalman ZM-MFC3 panel which can report how much power a computer (without the monitor) draws from a wall outlet. There were two test modes: 2D (editing documents in Microsoft Word or web surfing) and 3D. In the latter case the load was created by four runs of the introductory “Swamp” scene in Crysis 3 game at 2560x1440 with maximum image quality settings, but without MSAA.
We will compare the power consumption of the Nvidia GeForce GTX 760 with that of the Nvidia GeForce GTX 770, Gigabyte GeForce GTX 670, ASUS GeForce GTX 660 Ti and HIS Radeon HD 7950 Boost Edition at default and overclocked frequencies.
We don’t see any substantial differences in power consumption. The GeForce GTX 760 configuration needs about as much power as the system with an overclocked GeForce GTX 660 Ti and somewhat less than the Radeon HD 7950 system. The power consumption doesn’t grow up much when the graphics cards are overclocked, so every configuration can be powered by a 550-watt PSU.