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 (four runs of the introductory scene from the Swamp level in Crysis 3 game at 2560x1440 with maximum image quality settings, but without MSAA.
Let’s have a look at the diagram:
As we can see, our PC configuration with a rather fast CPU consumes less than 450 watts irrespective of the graphics card. As expected, the Radeon HD 7770 GHz Edition and GeForce GTX 650 Ti need more power than the others while the GeForce GTX 660 is the most economical. The differences between the graphics cards in terms of power draw are too small to affect your shopping choice, though.
As we’ve found out in our testing, the Radeon HD 7790 and the GeForce GTX 650 Ti Boost successfully complement the current line-ups of AMD- and Nvidia-based solutions. The former is exactly halfway between the Radeon HD 7770 GHz Edition and the Radeon HD 7850 while the latter is closer to the GeForce GTX 660 in performance. Both cards overclock well, the GeForce GTX 650 Ti Boost being even capable of accelerating to the speed of its senior cousin. Although the Radeon HD 7790 is positioned as an opponent to the GeForce GTX 650 Ti Boost considering their pricing, the Nvidia solution is faster, in some games even much faster. The Radeon HD 7790 is in between the ordinary GTX 650 Ti and the GTX 650 Ti Boost in sheer speed rather than competes with the latter. Moreover, we’d recommend you to buy a 2GB version of the Radeon HD 7790 which wouldn’t have problems at high settings, especially as the extra 1 gigabyte of memory doesn’t cost much.
That’s not the last of our reviews of these graphics cards. We’ll soon test a number of serially manufactured Radeon HD 7790 and GeForce GTX 650 Ti Boost. Stay tuned!