that's some sick hash right there.
That would be about 26 mining rigs with 4 R9-270x cards in each. (about 25k worth of hardware)
Do you have a secret to building cheap rigs? I'm not being sarcastic, just really wondering how it is possible to build a 4x270x for under a grand. by my calculations:
4x270x Rig
ram $25.00
processor $42.00
mobo $60.00
psu $210.00
hd/memory stick $20.00
# of gpus 4
gpus total cost $800.00
hardware (rig/case) $30.00
adapters $30.00
Total $1,217.00
$/KH $0.68
Always interested in info regarding cutting down costs on rig building.
Considering 3x290x rig in comparison:
3x290x Rig
ram $25.00
processor $42.00
mobo $60.00
psu $210.00
hd/memory stick $20.00
# of gpus 3
gpus total cost $1,887.00
hardware (rig/case) $30.00
adapters $30.00
Total $2,304.00
total KH $2700
$/KH $0.85
so actually seems to be cheaper builds on the 270s, obviously costs would go down with more cards, if u compare 7 cards u get:
7x270x = $0.61/KH
7x280x = $0.66/KH
7x7950 = $0.76/KH
7x290x = $0.80/KH
I find this interesting, I had just assumed that 280x was best due to everyone saying it was next best to 7950s. Obviously this doesn't consider power consumption, but i believe the 270x are pretty light on power anyway. But obviously you would need a lot more cards to make up the same hashing so maybe power consumption is a big factor.
270 is one of the best for the $. They use little power, and they run very cool.
For the cost, you can substitute a $4 milk crate instead of a case, a PSU like the seasonic 860 goes for $185, and you can even find 270's for $180.