Although the new card has two GPUs on board, Nvidia implies that it has got some overclocking potential.
Indeed, we could overclock its memory from 6008 to 7588 MHz (+26.3%) and also added 170 MHz (+18.6%) to the base GPU clock rate.
The boost GPU frequency reached as high as 1241 MHz as testified to by the monitoring graph:
The peak temperature of the GPUs in the automatic fan regulation mode remained almost the same (80 and 82°C) while the max fan speed only increased by 90 RPM to 2250 RPM. We guess that more efficient cooling (a liquid cooling system, for example) and volt-modding may help reach even higher GPU clock rates but our result is quite satisfying, too.
And, we’ve almost forgotten to tell you – it glows!
We measured the power consumption of computer systems with different graphics cards using a multifunctional panel Zalman ZM-MFC3 which can report how much power a computer (the monitor not included) draws from a wall socket. There were two test modes: 2D (editing documents in Microsoft Word and web surfing) and 3D (the benchmark from Metro 2033: The Last Refuge at 2560x1600 with maximum settings). The GeForce GTX 690 is compared with a single GeForce GTX 680, a single slightly overclocked Radeon HD 7970 and a couple of HD 7970s in CrossFireX mode. Here are the results:
So, the system with one GeForce GTX 690 card needs less power than the system with two Radeon HD 7970s. The difference is quite large and amounts to 112 watts when the GeForce GTX 690 is not overclocked. We can also note that the GeForce GTX 690 configuration consumes about 150 watts more than the GeForce GTX 680 one. The power consumption of the GTX 680 doesn’t grow up much at overclocking (+28 watts).