Im new here, have been mining for about a week now, and managed 4 bit coins as part of a pool. At today's rates that is about £40 per week, or £173 a month.
Anyway, im thinking of selling the card I have been using and upgrading to 2 x 6870's or 6970's maybe.
The card is a 5870 factory overclocked to 950Mhz.
Here is a link to show you what card it is:http://www.powercolor.com/Global/products_features.asp?id=245
The card is in almost brand new condition, having hardly being used up till now, until I found out about bitcoin and tried it out to see how fast I could make bitcoins.
If you run the miner with the fan on auto, it ends up getting up to about 60% fan and about 70 deg C, so I turn the fan up to 100% manually and is stays around 58 - 62 deg C on 98% load.
At the standard overclocked speed, it runs at about 393 Mhash. I tried overclocking it more, for a short time, and took it up to 1010 at which point it was running fine at 415 Mhash. I didnt really dare take it any higher as it is running on air cooling, and didnt want to leave it running at this speed for long, so left it 10 minutes to check it was stable, then put it back to 950Mhz and left it at that.
If no one wants the card for a mining rig, then ill stick it on e-bay, so send me a message if you're interested. Im in the UK by the way, so shipping within the UK will be fairly cheap, outside the UK might be more expensive, I dont know without getting a quote.
I can happily provide any screen shots, photos, videos etc etc to provide proof of speed, noise levels, temperatures, condition of the card, whatever you like.