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We have changed our method of measuring noise levels. We have built a system inside a Lian Li chassis with no case fans and have used a fanless cooler on our CPU. We are using a heatpipe based passive power supply and an Intel SSD to keep noise levels to a minimum. The motherboard is also passively cooled. This gives us a build with completely passive cooling and it means we can measure noise of just the graphics card inside the system when we run looped 3dMark tests.
Ambient noise in the room is around 20-25dBa. We measure from a distance of around 1 meter from the closed chassis and 4 foot from the ground to mirror a real world situation.
Why do this? Well this means we can eliminate secondary noise pollution in the test room and concentrate on only the video card. It also brings us slightly closer to industry standards, such as DIN 45635.
KitGuru noise guide
10dBA – Normal Breathing/Rustling Leaves
20-25dBA – Whisper
30dBA – High Quality Computer fan
40dBA – A Bubbling Brook, or a Refridgerator
50dBA – Normal Conversation
60dBA – Laughter
70dBA – Vacuum Cleaner or Hairdryer
80dBA – City Traffic or a Garbage Disposal
90dBA – Motorcycle or Lawnmower
100dBA – MP3 player at maximum output
110dBA – Orchestra
120dBA – Front row rock concert/Jet Engine
130dBA – Threshold of Pain
140dBA – Military Jet takeoff/Gunshot (close range)
160dBA – Instant Perforation of eardrum
Both cards are quiet when idle, although the fan speeds quickly ramp up when under gaming load. AMD reference coolers lag some way behind the modified solutions from companies such as XFX and Sapphire and we would expect these figures to be reduced when third party models are released over the coming weeks.
Looks like a winner from AMD. UK get shafted on price though, always do,
yeah, thats what im talking about. I was hoping more for £250 and £200 though. if the 7870 is £300 thats not much cheaper than 7950 which is now £350 in some places.
Awesome, the 7850 is on my list, depending on the price. no where has them, when are they released?
Loads of overclocking potential with the 7850. look forward to seeing the sapphire dual fan version when it hits. my only concern is US pricing. if 7870 is over £300 its f*cked. it needs to be £280 and 7850 needs to be £220 or less.
AMD’s pricing is all wrong, that the killer. they are charging way too much for everything lately. and they complain about intel price fixing? the sooner nvidia get theirs cards out the b etter. then they will have to drop the price.