i think its time to step up to a 980ti and have a look at how this thing works .. is it better? ... and im not asking about the hashrate 
...
#crysx
I am happy with my card but it has 2 8 pin pci power connectors and can draw as much as 250-300W. Quark is hashing at 26,7 and x11 13 Mhash. ...#crysx
i have been looking at the gigabyte g1 gaming card ... its a beast ...
http://www.gigabyte.us/products/product-page.aspx?pid=5472#ov ...
factory oc with BETTER cooling - though the twin 8pin connector will be an issue with the psu selection ... maybe need to redesign the frame specifically for this card - as it will take two large 1500W psu ...
big issue with this is that to buy 6 of these cards in one hit is a wallet suicide - when each card sells here at almost $1200.00AUD ...
BUT - the one machine would generate more hashrate than 3 / 4 of thefarms hashrate ...
ill have to decide what needs to be done soon ... i dont want to buy one card at a time - so that doesnt leave me with many options ...
see what happens - the power draw is the main conern here ...
tanx ...
#crysx
This is the card I bought..
Instead of wasting 2 1500 watt powersupplies on one rig just add 2 980ti cards to your 750ti rigs by replacing 2 of the cards.
2x 980ti + 4x 750ti.
All my rigs are running stable on 620-1200W psu's most of them are mixed rigs of 960,970 or 980 and 750ti's, but I also have mixed AMD + NVIDIA rigs.
The 980ti was an expensive card, but I scale slowly.
No profit yet, since all my earnings is used to grow the farm.