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Old 05-30-13, 02:01 PM   #1
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Post Hate Distractions While You're Gaming? You'll Be a 'Fan' Of This Fix

The crunch of footsteps when walking through a snowy field in 'Assassin'sCreed 3.' The satisfying 'blat-blat-blat,' of the PDW-57 in 'Call of Duty: Black Ops 2.' If you're a gamer, these sounds make the difference between a good experience and a great one.

Which is why our new flagships ' the GTX 780 and GTX 770 ' aren't just powerful, they're stealthy, too. Impressive, considering the brute power this hardware packs: the GTX 780, for example, features 2,304 Kepler GPU cores and 3 GB of GDDR 5 memory. Yet it'ssignificantlyquieter than our GTX 680 or GTX 580.

It's yet another example of just how obsessive we are about great gaming experiences. And it's the result of a series of conversations between twoengineers about the noise generated by fans, and when ' and why ' we notice it.

All too often, a graphics card's fan kicks in when the action ' and the graphics on the screen ' are their most intense. That sudden change in speed creates an unwelcome distraction.

'If you hear an ambulance, you hear it right away ' that's not because it emits a solid tone, but because it modulates,' said David, one of the engineers. 'The way our brain interprets sound, that modulation is something we really pick up on.'

It's a problem that David ' who studied mechanical engineering as a graduate and undergraduate at Oregon State and loves to take on his colleagues in bouts of 'Battlefield 3' ' is passionate about. 'If a GPU fan is noisy it's going to pull gamers out of the experience,' he says. 'It's just like when a cell phone rings in a movie theater.'

So he developed an algorithm aimed at smoothing out unnecessary fluctuations in the fan's speed.One example: the new software keeps the fan spinning at the same speed during less intense scenes so that it doesn't have to abruptly accelerate when the on-screen action ' and the GPU ' heats up.'Once you're playing that game, the fan shouldn't change speed at all,' David said. 'It doesn't need to, so why?'

The result is a triple play. New hardware, such as a sophisticated new vapor chamber design and a longer extended fin stack help keep the GTX 780 cool. Coupled with new fan control software ' and the efficiency of our Kepler GPU architecture ' the result is a GPU that generates less than 45 decibels of fan noise, and fewer distractions.

We think you'll be a fan, too.

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