now I promised to do some videos on overclocking Acoustics temperature uh
especially comparing the Cyclone GeForce
gts450 from MSI against the PNY
reference GeForce gts250 now as I mentioned in the
respecting unbox uh respecting respective unboxings for both of these
cards they do take a slightly different approach so you can see here the Cyclone
does not really exhaust much air outside of the case so it's going to be at a bit
of an advantage today because we are testing on an open test platform here
whereas the PNY card does exhaust uh
probably a good 30 to 40% of the air outside of the case with this shrouded
cooler maybe even more maybe more like 40 to 50% but it does have the
disadvantage of not having this wide open spread out design to dis dissipate
the heat quite as well so first of all let's uh have a look we're running
combuster with four times anti-aliasing
to really just beat the heck out of these they are running at stock speed
right now but you can see that the Cyclone cooler keeps that GTS 450 at a
cool 48 de even under 100% GPU usage the
fan speed is up around 53% so if we wanted to we could really Crank It Up
and we could probably squeeze better cooling out of this unit so here why
don't we just do that for a minute see what happens oh it's not even going to
let me yeah there it goes actually I guess that's not really
the point of what I'm I'm doing today so let's put it back to Auto where it will
ramp itself down ever so
slowly and I want you to have a listen at sort of how loud that fan
is you can hear it ramping Down Still ramping down some more we're not
quite all the way to where it will finally settle we're still up
around 67%
so it's quite quiet down below anywhere below about
60% and it makes its way all the way down to
51% so that's the noise underload for the Cyclone
cooler all right well here's our idle noise
testing and you can probably hear what you think is the Cyclone fan quite
clearly right now but if I go ahead and stop this Corsair fan behind it
hopefully you'll be able to hear that it actually gets quite a bit quieter the Cyclone fan is nearly silent at idle and
you can see it runs at about 40% at about 31° and that's kind of useless
unless I give you some context for the temperature of the room so it's about
26.5 de C at the intake for the fan now
let's switch over to the PNY reference card with combuster running you can see
we've got the GPU temperatures are quite
a bit higher but there's a very good reason for that it doesn't all come down
to cooler design so it is running at 64 to 65° on the GPU but check this out the
fan RPMs stay down around 30% so what
that means is this card is exactly as quiet under
load which is basically completely inaudible over the noise of uh my
desktop PC behind me back there um and
really that's not even a loud desktop either so uh that's kind of an
interesting way they that P Andy has tweaked the fan profiles cuz you can see
see even under 100% load which you'll never encounter in a game it doesn't get
up into any kind of a danger zone in terms of GPU temperatures so it's um
yeah it's not an Apples to Apples comparison that we were able to do today but here maybe this will help why don't
we take the fan speed and throw it up around 50%
there we go so fan speed is up around 51% so let's say you wanted to keep the
GPU a little bit cooler let me give that some time to stabilize the temperatures
and then I'll go ahead and uh do a quick noise test on that one too and we can
compare those
temperatures oh yeah room temps okay so if you wanted to take
manual control over your fan here's more of an Apples to Apples comparison we've
got 52° on the GPU we're running it at 51% now I'd say at
51% this fan sounds a little bit louder than the Cyclone fan but remember too
that as soon as you go and put the cyclone in a case you're going to be
exhausting heat into your case which is going to be recycled into the fan and
this one's going to blow a little bit more out the back of the case via these
vents than the Cyclone will so that couple of degrees might be made up for
um it is like I said a touch louder but that's neither here nor there at this
point I think we want to do some overclocking results on both of these
cards over the next little bit so continue to stay tuned don't forget to subscribe to lus Tech
tips actually one more short clip just wanted to show you what this fan sounds
like at full speed it only lets me go up to 70 for whatever reason not quite sure
why 70%
but that's what this one sounds like at full speed compared to the cyle