I am the OP. I have 3x7850 +1x7970 working. But suspect I can get more kh.
Motherboard is "MSI Z77A-GD65 Gaming" 16GB RAM, Ivy Bridge i3 3225.
These are all off 1x to 16x adapters and strung up for cooling.
Temps are 63 82 56 61. The 82 is one of the 7850s, not the 7970!
I tried re-seating the heatsink. Seems like just a hot GPU chip.
Not using any dummy plugs. Desktop runs off the 7850 in the 1x slot closest to the CPU.
Drawing 680w. ltc mining about 362 kh on each 7850. But only 478 off the 7970.
What are dummy plugs supposed to do for me again?
How would you suggest I change my cgminer options, currently I am using this command...
cgminer -o
http://coinotron.com:3334 -u **** -p **** --scrypt --gpu-fan 0-100 --gpu-engine 1050 --gpu-memclock 900 --intensity 12 --thread-concurrency 13632 --gpu-threads 2