Difficulty will easily rise 10 times by Autumn

[bigbeninlondon]

Assume: BTC/USD = 120.  1200 MH/s for 2x 7970 cards.  Power cost = $0.1/ kwh.  Power usage = 650 Watt.

650w? my 4x7950@530KH/s rigs pulls 700w mining scrypt and that's with me overclocking them, I'm aiming for 4KH/W once I start optimizing the rigs. It's good to know how inefficient the competition is when everyone starts switching to LTC.

I miss all the discussion on this forum about maximizing efficiency we used to have a year ago, maybe I should come back in a few months.

Right now maximum efficiency is buying ASIC chips. 

[favelle75]

Assume: BTC/USD = 120.  1200 MH/s for 2x 7970 cards.  Power cost = $0.1/ kwh.  Power usage = 650 Watt.

650w? my 4x7950@530KH/s rigs pulls 700w mining scrypt and that's with me overclocking them, I'm aiming for 4KH/W once I start optimizing the rigs. It's good to know how inefficient the competition is when everyone starts switching to LTC.

I miss all the discussion on this forum about maximizing efficiency we used to have a year ago, maybe I should come back in a few months.

Ha ha no kidding. I my 4 7970's in two different rigs use 650-700W! And I pay HALF of that in electricity (0.06cents/KWh). I am pumped to learn at how inefficient some people are, ROFL.

[Amph]

I made a calculation once, using difficulty, BTC/USD, power usage and power cost as input.  Consider hardware cost as zero because for some who have mined for a long time, mined bitcoins have covered hardware cost.

Assume: BTC/USD = 120.  1200 MH/s for 2x 7970 cards.  Power cost = $0.1/ kwh.  Power usage = 650 Watt.  Making less than $0.5 is no longer considered profitable.

Find breakeven difficulty.  

Difficulty = approximately 34 million.  So at 34 million difficulty, it's time to turn off the GPU miners.

what? your math is wrong as fuck
right now, it is easy to make 100 euro of profit in one month(0.13kWh/euro), with just two 7950, mining scrypt coin
aka gpu will survive for a year at least

for me asic are non-existent until they stop with this pre-order shit, and give us available products which are ready to ship

[Mabsark]

There's around 1000 Th/s set to be brought online:

Avalon chips = 250 Th/s
Avalon systems = 100 Th/s
ASICminer = 250 Th/s
BFL = 300 Th/s
BitFury = 200 Th/s
KnC = 200 Th/s

Those estimates are based on the following:

ASIMINER said they initially bought 50 TH/s. They recently said they've got 200 Th/s incoming.
The Avalon systems number is based on the 3 batches and the number for the chips is based on the amount of BTC in the chip account.
The BFL number is from the 75,000 chips @ 4 Gh/s.
The BitFury number comes from 100TH.
The KnC number comes from the 500 pre-orders, assuming all Jupiters and a bit extra

I'd say it'll be around the end of the year when the network hash rate hits 1000 TH/s. The companies making devices simply can't make them quick enough to get over a 1000 Th/s out by Autumn.