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Recently 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 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.
We load the card with FurMark.
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
The cooler is reasonably good, although both can be heard when fully stressed in Furmark. Adding another raises the noise to around 43 dBa.
I think these are good boards, even though a lot of people will be disappointed with the fact the 580 is still leading the single card attack
@Sam: Not quite. The 5970 is still the fastest card. The GTX580 is definitely the fastest single chip.
The price is the biggest selling point. I dont think they are the performance killers we expected, but the 280 price for the 6970 means its actually only 30 more than the 5850 was at launch. thats quite a good figure for them to achieve. I think they are doing what they do against intel in the CPU sector. drop pricing as low as poss.
CFx is very good with these cards. the drivers must be much better than I last remember
@Faith – thats what I meant, ill be sure to make sure I analyse the text perfectly before posting next time 😉
these arent too shabby. good job from AMD. they hit the sweet spot on the pricing