Looking for the best setup for 500kh/s or 1000kh/s on WPA/WPA2

[soxrok2212]

The best price and ROI way now is 


5x GTX 970 

970 is more than 3x faster than cheapest 750ti and price is better.

MB ASRock X79 Extreme11 or another MB with 5 x Pcie x16 

My configuration is 5x GTX970
32GB RAM, 120GB SSD disk

power is 5x150W max.. with 1kw PDU is everything ok..

current WPA speed is  880kh/s
my price is about 2800USD 

8 chars WPA, only letters take up to 1 day.. 

off course i can use 980 or titan, but they are 50% higher price, but speed is about 200kh/s per card.. 

now is GTX970 the best price investion..

I couldn't find that motherboard anywhere for under $500, seems to be discontinued XD I'll keep looking though

3x 150W with 100W other think all is  550-600W then 1KW PSU is ok for that without problem.

Cool, thanks for the info!