Update:

Quote from: LaudaM on December 08, 2013, 11:50:13 PM

How much does the electricity cost in your area?
Do not buy 270 cards, get r9 280.

Quote from: jduartedj

My power value is 0.13 per kw.h so in 24h 0.13*24 = 3.12€/day ~93.6€ per month ~ 3-4 LTC

Stinky_Pete,

I had realized that already, I'm probably going for 5 cards with 2 psu.
This post is exactly for probing the possibilities and finding the best investment!

I also voted investment Tongue

but people are too skeptical.

Everyone,

As for costs/dates/setups etc:

atm I'm thinking core rig is
Motherboard
Asrock X79 Extreme4 (7x PCIe slots)

GPUs
5x VGA ASUS RADEON HD7770 1Gb DDR5 DVI DisplayPort - HD7770
(option to add 2 more)

Other components to be revised

Costs I'd say roughly 2000$ (max 2250$) per machine, initial investment is 1 machine

Dates: All I need is people interested imho ASAP should be the date!
I'm going on holidays so I have a lot of dedicated time to put to the rigging!
(aka NOW)

NOTE the setup is NOT final, It's still a work in progress and subject to changes like HD 7770 for R9 280 (for example)