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We have built a system inside a Lian Li chassis with no case fans and have used a fanless cooler on our CPU. The motherboard is also passively cooled. This gives us a build with almost 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
All of the cards on test are relatively quiet. The XFX HD7770 Core and Sparkle GTX650 Ti Dragon are joint winners, with little difference between the results. Under gaming load the Sapphire HD7790 OC is basically inaudible.
You guise were busy at 04.01 AM xD
Good looking card from Sapphire, not so sure of the range however, pricing looks off.
HD7850 is the best of the bunch, they used to £180, now you can get one for under £130.
Good review. looks like a good buy if they replaced the HD7770 with this one at the same £100 price. Can’t see this card online, interested to see how much of a premium the OC and cooler will cause.
I like the intro and conclusion, very true points on pricing. And this audience are all about price. some reviews just overlook it completely.
Do you know Scan have the XFX HD7850 for £127 today !
Unless AMD force up the price of the HD7850 to sell HD7790 this wont work. people will get pissed too. HD7850 at under £140 rocks.