Quote from: mgio on May 15, 2013, 10:09:38 PM

Quote from: Schrankwand on May 15, 2013, 09:21:53 AM

Quote from: mgio on May 15, 2013, 06:43:47 AM

Quote from: traderman on May 14, 2013, 06:01:35 PM

Look at all the fortune tellers battling it out. IF you asked someone a few years ago if Bitcoin will go to $250 almost everyone would have said NO. LOL Just keep mining fellas and stop arguing.

Bitcoin isn't at $250 right now. It's not even half that. It wasn't even at 250 for a couple of hours.

Don't mine because you expect bitcoins to go up. Just buy bitcoins instead.

Lets say I buy a 7970 for 400$ now.

It mines at 700mh/s. We have a price of 110 and in one year, Bitcoin goes to 200. Profitability declines by 60% or more.
You have 727 dollars when investing, ~ 1500 after one year of mining and not selling bitcoins.

Your problem is your profitability is going to decline by waaaay more that 60%. More like 98% or so.
You need to take into account:
- The 600 65GH/s Avalon machines that will be shipping in batch 2 any day now
- The 600 65GH/s machines from Avalon batch 3.
- The 200 TH/s that ASICMiner says they will add in the next 2-3 months
- The 60,000 plus Butterfly Labs pre-orders, which should add another 200-300 TH.
- The hundreds of thousands of Avalon discrete 282 MH/s chips that are being sold.

Difficulty will easily be in the hundreds of millions in the next 6 months.

7970's would be one of the worst cards to buy purely for mining as well... if you're going to game with it also, sure.

Otherwise you're purchasing a card that's going to decline in value (absolute $) more than any other card out there over the next few months