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XFX HD6970 3-way CFx & HD6950 CFx review

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 a little in both configurations.

In three way CFx, the noise levels are extremely high, due to the close proximity and raised ambient temperatures (to over 100c). We recorded around 60 dBa when all three cards were running 3dMark 11.

Here is a video of the noise levels of the system at full load with 3 cards in CrossfireX. Its not even remotely scientific, but turn the volume up to get an idea !

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17 comments

  1. Wow this is incredible performance levels, price isnt bad either. cant believe the test 2 is delivering the same levels of performance as the XFX black edition 5970s in crossfire X. thats really interesting !

  2. 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

  3. CFX x 3 is awesome . blown away by the frame rates its generating. Noise might not suit everyone though :p

  4. 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.

  5. Way to go, lol Crossfire in x3. thats a nice addition. XFX seem to love Kitguru. scaling is good in some of the games, but not so good in others. unigine at 133 fps caught my eye. mental

  6. That was brilliant read. loads of testing and AMD have made a rockin card. the 6950 seems to be really well price positioned. cFx3 was fun, thanks

  7. Nice work Zardon, get some sleep, too much for one man 🙂

  8. Shit on a stick. CF x 3 is awesome. ill be sitting here green with envy, knowing I was shovelling snow from my driveway while I knew you were playing games with that setup

  9. I wasnt expecting 3 way CFx to work so sun out of the gate. that should really kick nvidai in the nuts. im all for that.

  10. Hey zardon if you are finished with the 40 cards you have can you send a few my way for a long term loaner? 🙂

  11. Many people seem disappointed about the fact the 580 is still the performance king.

    What about the price? 420 quid for a graphics card? its 140 quid more than the 6970. no thanks.

  12. The bundle needs to be better. We need to start getting converters for 3 screens. mini displayport? no monitor supports that as far as I know apart from apple. a big converter cable like powercolor offer would be much better than anything else ive seen. No more Call of Duty Modern Warfare 2’s please, everyone has this game, years ago. Seems odd that no partners are selling these with better 3 screen out of the box suppotr. cables, converters etc.

  13. @ Long Flow. I think you need to realise that about 0.5 percent of the potential audience have more than one screen, regardless of what AMD try to push. I agree in theory though, its hard to sell 3 screen cards if you need converters etc, as well as a displayport monitor. Sapphire should sell a flex gaming edition, that would sell bucketloads. Something more powerful than a 5770 !

  14. over 100c in 3 way sli. They need to put the slots further apart in some motherboards for this. three cards in 3 way generate such heat and its pushed into the cards beside. Love the performance, but the noise and temps would put me off immediately. dual CFx though for certain. ill probably get two 6950’s in Cfx in the new year.

  15. These are really great cards. I dont care for a 430 quid board, 220 quid for the 6950 though? yes please !

  16. I think that most enthusiast gamers will stretch to £300 for a board, putting the 570 and 6970 in the top end for most people. id like to see the followup with 570 against 6970. the three monitor support is a selling point, ive already two screens, one more is only 130 quid. if I want this with 570 I need another card. nvidia are lagging here. but I prefer their drivers. no idea what to buy now 🙁

  17. awesome work , those are mega cards. need to sell my dog to get some.

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