this should go in the mining sub forum
Or better, the mining speculation subforum:
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http://bitcointalk.org/index.php?board=81.0I guess its speculation on my economic situation.
You are essentially asking for unknowns. Is it a good idea to send cash to a third party in return for the promise of future delivery of hardware when
- eventual delivery date of purchased hardware
- the mining difficulty
- bitcoin exchange rate
are all unknowns?
That's what your question boils down to.
What is known is that with mining being technically available to anyone, anywhere, capacity will be added by those up to the point that it no longer remains profitable to do so.
For GPUs, the test as to whether or not to start mining or to add capacity was closely related to the cost of electricity (and, of course, is there technical skills, spare time, physical space that is secure with with adequate power and ability to remove heat, etc.)
It wasn't always so though. In April through June, 2011, for example, GPU mining was fantastically profitable regardless of what you paid for electricity. The reason difficulty didn't jump faster was the difficulty in finding GPUs to acquire -- they were selling way higher than list price. Eventually, the exchange rate dropped and equilibrium was found -- and the cost of electricity become the decision maker as far as whether or not to mine, to add capacity, or to shut down.
With ASICs it is once again access to the hardware that limits growth. Everyone receiving the first ASICs will likely find mining to be very profitable. The problem is, it is unproven if BFL can actually deliver these, or if they do, will it be long after the block reward drop in December, or will they trickle out where by the time you get yours the mining difficulty will already have risen so dramatically.
Someone wanting to mine and with access to plenty of capital would hedge their bets, ... some GPU mining, some FPGA mining and some orders in to BFL. The safest bet today though is someone who already has large amounts of GPU mining capacity and whose electicity is cheap. For them, profitability is still good, the GPUs will still have some value in five months (though selling now would probably yield more than after December), and the GPUs were cheaper to acquire than FPGAs so there isn't as much capital invested.
If that describes you (yes, your 1.2 Ghash/s fits that bill ... though you haven't indicated what your cost per kWh for electicity), then keep your rig or even get another if you have cheap electricity and mine til it no longer makes sense.
But until BFL proves they have a functioning ASIC that can be shipped in quantity, any money sent their way is for purely speculative purposes with no guarantee.
This is something I have considered, It comes down to "do I think bitcoin will fail" my answer is no.
If you sincerely believe that
and you think the price is likely to go up over the next couple years, then you should be buying bitcoins instead of mining equipment.
Exactly. GPU mining essentially was a less risky form of speculating on the future BTC/USD exchange rate and future difficulty as you could also liquidate the hardware and get back a decent percent of the investment. Ask most anyone who bought hardware in the past four months and you'ld find that they would have been better off holding those funds as BTCs until today, and then buying that same amount of hardware today (they'ld have the same hardware, but more BTCs left over than what mining for four months would have produced, after subtracting those BTCs that went to cover the cost of electricity). The only ones this isn't true for are those who aren't paying for electricity or get it at a really cheap rate.
To sum it up though, if BFL does actually ship, in quantity and on the October schedule that they've mentioned, those who are the first to receive them will likely be very happy with their purchases. But it is quite a gamble if that truly happens.