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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
The HD6670 is the quieter of the two cards, as it is demanding less power and subsequently generating lower levels of heat. The HD6770 is clearly audible when gaming, and this rises under synthetic Furmark load. Neither card could be classed as annoying, although for a media center in a living room we would opt for the HD6670.
Them seem a decent make and if Amazon stock them, their warranty system is excellent regardless of the manufacturer. This is why I order from amazon all the time, no quibble returns if problems occur.
I would however look at a passive card for a media center, although many of these cards dont generate much noise at all. I read a thread where a guy disabled the fan on his card and underclocked it by 100mhz and it was fine! (6670)
6670 for a media center would be my first choice. I currently use an nvidia board but its old and about to die. might look at a passive 6670
Id go for a passive solution in this sector.
Hello,is there any option to watch TV via this card,i have VTX 6670 Digital Streamer,but which program is needed to watch tv via cable network etc,is that possible? 🙂