Adaptive Fan Control on the NVIDIA GeForce GTX 580 Explanation & Demonstration Linus Tech Tips
Adaptive Fan Control on the NVIDIA GeForce GTX 580 Explanation & Demonstration Linus Tech Tips
2010-11-08
now I'm gonna have to talk over this
full-speed fan right now I have the fan
manually set - okay you can't really
tell but I unchecked auto I took it to
the very end and then I took the ply and
that's how loud it is this thing is loud
so I'm gonna have to talk over a little
bit but I want to show you guys
something really neat so I turn to auto
back on and watch what's happening to
the fan speed right now it's going down
by one percentage at a time
and if you listen to it
it's a very very gradual progression in
terms of the noise level now it actually
does the same thing when the fan speed
is ramping up compared to previous cards
from Nvidia as well as from their
competition so Nvidia is added what
they're calling adaptive fan control
which is a way of saying that instead of
the fan speed going from you know idle
so so pretty much silent on almost every
nvidia card for the last couple
generations - hmm as soon as you start
gaming you'll actually see like look how
gradual that ramp down is of the fan
speed once the card realizes that it
doesn't need the fan to go as high as it
is so why don't we give you the opposite
example really quick here and I'm gonna
fire up fir mark and extreme burn mode
and show you just what happens with that
fan speed right there actually here to
speed things up a little bit I'm gonna
go ahead and cover the intake of the fan
with a piece of paper so that now you
can see it's finally going up so it's it
stepped itself up 1 and then 2 percent
and then 3 percent
for five
six so this allows it to be a lot
smarter about how much noise it's
outputting depending on the amount of
load on the GPU so I personally think
this is pretty cool because it means
that you don't get that that obnoxious
up-and-down movement of a fan like say
you're in a you're playing a game where
there's a certain intensive part and
then there's a less intensive part and
here the fan GUI or if it's at that
borderline where it's it's it's just
like let's say the the fan profile on
the card is if it gets to eighty degrees
and the fan ramps up to cool it down and
then it cools it down to seventy five
but then it heats back up to eighty and
then it and so you have that that
constant up and down up and down motion
well this will make that kind of well
adaptive cooling almost unnoticeable
unless you got your ear to the card so
that's pretty darn cool
so just for context here's the same demo
with the GTX 480 so I'm gonna turn on
auto fan control and boom it's quiet
okay and then if I go ahead and do what
I was doing before with the 580 turn on
fur mark cover up the fan you're gonna
see that even though it shows that the
fan speed is going up you know one lone
percentage at a time hair only till it
starts going here and I'll put the
camera a little closer you're going to
be able to hear the fan ramp up really
fast kind of like a jet taking off
so contrast that with how slowly and
smoothly the 580 fan ramps up and you
have yourself a very good reason for
Nvidia to implement their new adaptive
fan control
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