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Like any high-end GeForce graphics card, NVIDIA will allow you to opt for the multi-GPU road with SLI as an option. You can pair two or three cards in one PC and have them do a decent workout. It's however now something we'd recommend whatsoever power consumption wise.
At the backside we spot some micro switches (to the left), these are for the pro-overclockers that apply extreme cooling conditions. There is a switch for extreme temperatures, other switches to increase the volts. There is also an OCP unlocker switch and a PWM Clock Tuner. That OCP Unlock switch that allows for >320A (!) of current, along with that PWM Clock Tuner switch that sets the PWM to 350MHz, from 260MHz to help eliminate ripple.
Another point worthy of mentioning is that the card also has dual BIOS, one with a standard BIOS and another that solves the GTX 480s 'cold bug' when LN2 cooling is applied. With the MSI Afterburner overlock application you can also adjust the volts on the GPU, memory and the PLL.
The GeForce GTX 480 has a maximum power consumption of 250~275 Watts, you'll need to power the card with a 6-pin and two 8-pin PCIe PEG lead from your power supply. The two 8-pin PEG headers are supposed to feed the card/PCB/components and the 6-pin PEG power header is purely for memory. Ehm yeah ... it's extreme alright.
Once the ambient air has been used to cool the GPU, the hot air will 'partly' be blown outside the PC through the exhaust you can see above the monitor connectors. Residual heat due to the design will be dumped inside the PC though, so make sure you got proper ventilation inside the PC chassis.