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now I promised to do some videos on overclocking Acoustics temperature uh

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especially comparing the Cyclone GeForce

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gts450 from MSI against the PNY

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reference GeForce gts250 now as I mentioned in the

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respecting unbox uh respecting respective unboxings for both of these

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cards they do take a slightly different approach so you can see here the Cyclone

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does not really exhaust much air outside of the case so it's going to be at a bit

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of an advantage today because we are testing on an open test platform here

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whereas the PNY card does exhaust uh

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probably a good 30 to 40% of the air outside of the case with this shrouded

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cooler maybe even more maybe more like 40 to 50% but it does have the

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disadvantage of not having this wide open spread out design to dis dissipate

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the heat quite as well so first of all let's uh have a look we're running

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combuster with four times anti-aliasing

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to really just beat the heck out of these they are running at stock speed

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right now but you can see that the Cyclone cooler keeps that GTS 450 at a

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cool 48 de even under 100% GPU usage the

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fan speed is up around 53% so if we wanted to we could really Crank It Up

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and we could probably squeeze better cooling out of this unit so here why

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don't we just do that for a minute see what happens oh it's not even going to

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let me yeah there it goes actually I guess that's not really

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the point of what I'm I'm doing today so let's put it back to Auto where it will

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ramp itself down ever so

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slowly and I want you to have a listen at sort of how loud that fan

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is you can hear it ramping Down Still ramping down some more we're not

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quite all the way to where it will finally settle we're still up

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around 67%

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so it's quite quiet down below anywhere below about

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60% and it makes its way all the way down to

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51% so that's the noise underload for the Cyclone

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cooler all right well here's our idle noise

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testing and you can probably hear what you think is the Cyclone fan quite

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clearly right now but if I go ahead and stop this Corsair fan behind it

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hopefully you'll be able to hear that it actually gets quite a bit quieter the Cyclone fan is nearly silent at idle and

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you can see it runs at about 40% at about 31° and that's kind of useless

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unless I give you some context for the temperature of the room so it's about

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26.5 de C at the intake for the fan now

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let's switch over to the PNY reference card with combuster running you can see

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we've got the GPU temperatures are quite

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a bit higher but there's a very good reason for that it doesn't all come down

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to cooler design so it is running at 64 to 65° on the GPU but check this out the

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fan RPMs stay down around 30% so what

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that means is this card is exactly as quiet under

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load which is basically completely inaudible over the noise of uh my

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desktop PC behind me back there um and

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really that's not even a loud desktop either so uh that's kind of an

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interesting way they that P Andy has tweaked the fan profiles cuz you can see

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see even under 100% load which you'll never encounter in a game it doesn't get

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up into any kind of a danger zone in terms of GPU temperatures so it's um

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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

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we take the fan speed and throw it up around 50%

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there we go so fan speed is up around 51% so let's say you wanted to keep the

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GPU a little bit cooler let me give that some time to stabilize the temperatures

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and then I'll go ahead and uh do a quick noise test on that one too and we can

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compare those

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temperatures oh yeah room temps okay so if you wanted to take

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manual control over your fan here's more of an Apples to Apples comparison we've

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got 52° on the GPU we're running it at 51% now I'd say at

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51% this fan sounds a little bit louder than the Cyclone fan but remember too

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that as soon as you go and put the cyclone in a case you're going to be

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exhausting heat into your case which is going to be recycled into the fan and

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this one's going to blow a little bit more out the back of the case via these

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vents than the Cyclone will so that couple of degrees might be made up for

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um it is like I said a touch louder but that's neither here nor there at this

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point I think we want to do some overclocking results on both of these

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cards over the next little bit so continue to stay tuned don't forget to subscribe to lus Tech

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tips actually one more short clip just wanted to show you what this fan sounds

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like at full speed it only lets me go up to 70 for whatever reason not quite sure

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why 70%

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but that's what this one sounds like at full speed compared to the cyle