GeForce GTX 480 3-way SLI review -
During the stress tests we measured power consumption based on the power draw from the entire PC.
The methodology is simple: We have a device constantly monitoring the power draw from the PC. After we have run all our tests and benchmarks, we look at the recorded maximum peak; and that's the bulls-eye you need to observe as the power peak is extremely important. Bear in mind that you are not looking at the power consumption of the graphics card, but the consumption of the entire PC.
Our test system is a power hungry Core i7 965 / X58 based and overclocked to 3.75 GHz. Next to that we have energy saving functions disabled for this motherboard and processor (to ensure consistent benchmark results).
I'd say 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.
Keep that in mind. Our normal system power consumption is a little higher than your average system. But with multi-GPU setups .. well hehe .. that fact fades away real fast. Check it out.
So yeah with 3-way SLI we noticed our power consumption peak to beyond a kilowatt, 1009 Watts (!) On average however that is around 850-950 Watts. Remember that, these are peak / maximum wattages that we are showing. 2-way SLI was consuming a lot of power as well, roughly 700 Watts and that's 180 Watts more than two Radeon HD 5870 cards.
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