Approximate ROI on Mining Equipment?

[skeppi]

Hi everyone

If this question has been asked before (and i'm pretty sure that's the case o.O) i'm sorry for this thread but i wasn't able to find satisfying answers on my questions so i finally decided to register and post this:

I've been browsing this forum and several other websites for a couple of days now and am willing to invest in mining equipment. Is it possible to make relatively correct assumptions on the approximate ROI if i, let's say, invest a 5-digit amount in equipment and consider the increasing difficulty? As far as i'm informed now it makes little sense to pre-order from BFL and maybe receive a piece of hardware in 2015 and gpu-mining seems to make no sense as well.

I came to the conclusion that buying USB asicminer erupters for 2 BTC a piece seems to be the most logical solution at the moment (?). Assuming that i'm willing to invest e.g. 10.000 € (~142 BTC @ 70 € per BTC) i could buy 70 erupters (1 for 2 BTC) hashing at 70 x 0,333 MH/s = 23,31 GH/s (equipment and power supply costs etc excluded). Can i hope for an amortization of the costs in 3/6/12/x months or will the rapidly increasing network hashrate leave me with hardware that can barely compensate for the power costs?

Thoughts? Recommendations? "Professional" advice might get paid.

Thanks in advance

[TheSpiral]

http://www.coinish.com/calc/
Click expert, put in your numbers.

[Moheta]

There is a lot of talk about ROI on the mining speculation sub forum.

https://bitcointalk.org/index.php?board=81.0

[cesmak]

How much power use one unit of 333 Mhash ?

[adviceadam]

How much power use one unit of 333 Mhash ?

Graphics cards generally use a lot more than ASICS, like the Block Eruptor USB.

[pheaonix]

usb block eruptors are very inefficient for the price. you will likely never ROI.

buy some avalon chip products and a kncminer.

especially if you have 10k to spend.

this thread isn't 100% accurate but should give you a rough idea of whats going on and who is promising what

https://bitcointalk.org/index.php?topic=209750.0

[skeppi]

experimenting with the calculator lead me to the same conclusion. too bad...

but thx for the help and saving me money.