Just another rate my rig before I buy and set it up thread.
GFX $ 329.00 MSI ATI HD7950 OC 3GB GDDR5 2MDP/HDMI
http://umart.com.au/pro/products_listnew.phtml?id=10&id2=248&bid=2&sid=85139CPU $ 39.00 AMD Sempron LE-145 2.8Ghz 1M
http://www.msy.com.au/product.jsp?productId=7092Motherboard $ 153.00 Gigabyte GA-990FXA-UD3 4x DDR3 GLan SATA3 RAID USB3 1394 ATX
http://umart.com.au/pro/products_listnew.phtml?id=10&id2=182&bid=2&sid=78931RAM $ 36.00 Kingmax 4G PC12800 1600 MHZ DDR3 Single Stick
http://umart.com.au/pro/products_listnew.phtml?id=10&id2=153&bid=2&sid=103958PSU4 (1050W) $ 275.00 Seasonic 1050W 80Plus Gold Full Modular
http://umart.com.au/pro/products_listnew.phtml?id=10&id2=140&bid=2&sid=82587Case $ - Milk crate
HDD $ 15.00 Some USB stick
Cabling x4 - 16x to 16x Powered Riser Cable
Only thing I have left to do is find the Powered Riser cables... which seems to be quite challenging.
EDIT: This is still conceptual but I am about to go get the parts to make this.
Expected stats:
Hash rate between 2400 kHz and 2600 kHz
Power consumption about 20.544 kWh @ $5.5 to run each day
Outstanding questions:
Where did you guys get your powered risers from?
Do I link the GFX cards in XFire, or can I leave them standalone? (Naturally running headless on a flavour of linux)