Bitcoin calculator difficulty factor

Have you ever heard of BitCoins? How they they work? It is supposedly an electronic currency?Which is not interfered with by banks. I wonder how then is it worth anything? I don’t really know about economics though. People buy stuff with it, places accept it on the internet rather than dollars, and you can even exchange US dollars for BitCoins, there is an exchange rate and everything.
It is used to money launder or something?Pay for computer with bitcoin?So I have a buddy who has been bitcoin mining for a few days. He has made about $150 dollars. He has a $700 gpu. I cant remember the exact model. It is an MSI manufactured ATI card. However, it got me thinking. If I bought two radeon HD 6870s at about $179 crossfired em, and threw them in with a average price AMD processor ($125). A motherboard ($100) a power supply ($125) and a cheap HD (free from work) and DVD drive ($25). I can get a case for free from a friend and electricity is no concern. Total $708. It appears to me that I could pay this off in a few months of bitcoin mining ( I know it gets harder as time goes on). Please tell me where I am wrong.

Plunk that value into the generation calculator (also below), which will say you get about 1 bliock in the next 12.5 days. 1 block = 50 BTC, so 50 BTC / 12.5 days = 4 BTC per day, since 1 BTC = $3.44 USD at this moment that’s $13.76 generated per day. Less about $1 for electricity that’s $12.76 per day.

However, the difficulty at present will increase at more than 35%, so after 5 more days you’ll get $10/day. Then after 10 days it’ll probably go $8 per day for 10 days, and so on.

In other words, unless the BTC/USD exchange rate increases, you’ll likely not generate enough BTCs to pay off the $708 invested. You’ld still have a $708 computer, or whatever it is worth, so it isn’t a bad purchase if you can use the PC (or sell it later). On the other hand, if the BTC/USD increases rapidly like it has been, then your payoff could happen more rapidly.

So your question boils down to: will the future difficulty factor for mining bitcoin increase significantly faster than the market exchange rate will change? Nobody knows.

Money Transfer Question?Does anyone know if it is possible to transfer any money amount from an account in Bank A to an account in Bank B in Euros, knowing that the money in Bank A’s account is not in Euros?

If so, do I just need to convert the amount in Bank A into Euros and transfer that amount, which will automatically convert into Euros when transferred to Bank B, or would I need to go Bank A and tell them what I need exactly, or to Bank B?

Ok, I’ll help with an example. Let’s say Bank B uses a currency that is 1/4 of a Euro, then would I need to transfer 1000 of that currency so that it would transfer 250 Euros (if I do it online), or can they do that in the bank A?

Problem is I am asking this because I am an expat in a foreign country where big chances are the employee at the bank won’t speak English and I don’t speak the local language, so I would prefer to do it on my own.

Thx, and sorry if I sound confusing. If you would prefer to have more details, feel free to message me.