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[dentldir]

It takes a Minumum of 1.875 G/hps to make 1BTC/24hr.

With current prices at $6-7 how do the casual miners hang on?

Im running about 2Ghps and average just over 1 BTC a day.  I consider myself a casual miner.

I hang on by not changing anything?

Also day trading BTC as the market swings.  The action this weekend was better than EUR/JPY during the financial collapse.  I should say the 2008 financial collapse.

Did anyone else see those $50k trades back and forth.  Good stuff.

[PatrickHarnett]

If that person with 1875MHash/s was pool hopping he would make 1-2.5 BTC a day depending on luck.

With luck, I would make 50 BTC from every block and create 1000 blocks per hour - with luck.

Without luck, or something akin to the  law of large numbers (can't recall if it's the weak or strong version, but read average) you will on average get around 1/day.

[teukon]

My mining rig costs about 0.8 GBP (about 1.3 USD) a day to run and makes about 0.4 BTC a day.  I can 'hang on' by selling my BTC on the market and pocketing the difference.

I guess the trick is to avoid mining with CPUs and stick with GPUs or FPGAs.

Your title has reminded me of a fact useful for quickly mentally converting kh/s into BTC/day:
At a difficulty of 1`000`000, 1GH/s is worth very close to 1 BTC/day.

Also, where I live electricity costs are such that wattage is almost exactly GBP/year so I have a very easy time with the figures.