Graphics card Power consumption
Power Consumption
Let's have a look at how much power draw we measure with this graphics card installed.
The methodology: We have a device constantly monitoring the power draw from the PC. We simply stress the GPU, not the processor. The before and after wattage will tell us roughly how much power a graphics card is consuming under load.
Note: As of lately, there has been a lot of discussion using FurMark as stress test to measure power load. Furmark is so malicious on the GPU that it does not represent an objective power draw compared to really hefty gaming. If we take a very-harsh-on-the-GPU gaming title, then measure power consumption and then compare the very same with Furmark, the power consumption can be 50 to 100W higher on a high-end graphics card solely because of FurMark.
After long deliberation we decided to move away from Furmark and are now using a game like application which stresses the GPU 100% yet is much more representable of power consumption and heat levels coming from the GPU. We however are not disclosing what application that is as we do not want AMD/ATI/NVIDIA to 'optimize & monitor' our stress test whatsoever, for our objective reasons of course.
Our test system is based on a power hungry Core i7 965 / X58 system. This setup is overclocked to 3.75 GHz. Next to that we have energy saving functions disabled for this motherboard and processor (to ensure consistent benchmark results). On average we are using roughly 50 to 100 Watts more than a standard PC due to higher CPU clock settings, water-cooling, additional cold cathode lights etc.
We'll be calculating the GPU power consumption here, not the total PC power consumption.
Measured power consumption
- System in IDLE = 201W
- System Wattage with GPU in FULL Stress = 449W
- Difference (GPU load) = 248W
- Add average IDLE wattage ~ 50W
- Subjective obtained GPU power consumption = ~ 298 Watts
Mind you that the system wattage is measured from the wall socket and is for the entire PC. Below, a chart of measured Wattages per card. With 2-way SLI we noticed our power consumption for the cards peaked to roughly 298 Watts, that's JUST the two cards, not the entire PC.
| Power consumption | TDP in KWh | KWh price | 2 hrs day | 4 hrs day |
| Graphics card measured TDP | 0,308 | 0,23 | 0,14 | 0,28 |
| Cost 5 days per week / 4 hrs day | 1,42 | |||
| Cost per Month | 6,14 | |||
| Cost per Year 5 days week / 4 hrs day / | 73,67 | |||
| Cost per Year 5 days week / 4 hrs day / $ | $ 97,25 |
We estimate and calculate here based on four hours GPU intensive gaming per day for 5 days a week with this card.
Above, a chart of relative power consumption. Again the Wattage displayed are the cards with the GPU(s) stressed 100%, showing only the GPU power draw, not the entire PC. Interestingly enough the power draw of the non Ti version is roughly similar to the GTX 560 Ti, ah well.
Here is Guru3D's power supply recommendation:
GeForce GTX 560
- On your average system the card requires you to have a 500 Watt power supply unit.
GeForce GTX 560 in 2-way SLI
- A second card requires you to add another ~175 Watts. You need a 700+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).
There are many good PSUs out there, please do have a look at our many PSU reviews as we have loads of recommended PSUs for you to check out in there.
