 All right guys, so I'm going to take a slightly different approach to my temperature and acoustics Testing that I normally do this is with the HD 6990 so what I'm going to do is instead of holding my camera here close to the fan I'm actually going to hold it above the card Right here, and the reason I'm going to do that is because there's two things I'm going to compare it against I'm going to compare it against a single GTX 580 And I'm going to compare it against two GTX 580s in SLI so that'll give us a comparison against a High powered single card as well as two high powered cards running in tandem So here's our idle temperature reading Which is 39 to 38 degrees in this particular room all right so we've got our load temperature for the Radeon 6990 and That is 82 degrees and oh man you guys can't see this at all. Okay, focus focus focus focus come on focus on my hand Focus on the screen whatever you'll have to take my word for it 82 degrees and 87 degrees on each of the GPU So I'm fairly certain that the 82 degrees is on this GPU And the 87 degrees is on this GPU And I think the reason for that is that this grill at the back is more restrictive Are at the yeah Then this grill at the front of the card because as soon as I go like this The cooler GPU starts to heat up to the same kind of temperatures as the less cool GPU So that's something maybe they if you installed an aftermarket less restrictive grill on your card You might have some success keeping down your GPU temperatures a little bit alright So right now I'm running only one of the GPUs At its fan speed at its load fan speed so this is at 91 degrees In Furmark so this is the EVG card that's running because remember windowed open GL programs will not run in SLI mode And for my two card acoustics test. I'm just gonna take both cards I'm gonna turn them up to the same percentage fan speed manually because I can't be bothered to run it in open Are in full screen mode and change the XE and all those little tricks so the fan speeds around 80% so I'm just gonna turn both fan speeds to 80% and take a reading And just for laughs guys here's 100% fan speed on the 6990 Although it never ramped up to this speed during my testing so I'm gonna be turning off auto in In afterburner go away cat turning off auto and afterburner and Watch the piece of paper on the wall when I click apply okay bear in mind the card is here So it's about yay far away from the wall, okay? Oh Watch the cat too. This might be funny See it's lifted away from the wall So in conclusion the Radeon 6990 is pretty darn loud But it's also pretty darn powerful don't forget to subscribe to Linus Tech Tips for more unboxings reviews and other computer videos