詳情看測試
http://www.legitreviews.com/article/1258/15/

GTX480多接一台螢幕，閒置時耗電整整多出80W，溫度瞬間來到90度

相較於GTX285 HD5870都概略只有上升40W

測試的機殼是Corsair 800D，所以在一般的機殼下溫度可能更可觀

NV的回應是
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"We are currently keeping memory clock high to avoid some screen flicker when changing power states, so for now we are running higher idle power in dual-screen setups. Not sure when/if this will be changed. Also note we're trading off temps for acoustic quality at idle. We could ratchet down the temp, but need to turn up the fan to do so. Our fan control is set to not start increasing fan until we're up near the 80's, so the higher temp is actually by design to keep the acoustics lower." - NVIDIA PR
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大易就是為了避免電源狀態改變時，時脈跳動導致螢幕閃爍，所以顯卡會保持在較高的頻率