Ok, I think I'm figuring it out 
...
2x Saphire 7970 w/6gig ram = 1264 KH/s & I think I can get to 1500 KH/s
This article is the holy grail for 7970's in LTC mining
https://github.com/ckolivas/cgminer/blob/master/SCRYPT-README
I googled "invalid nonce - HW error". googles my friend
...2x Saphire 7970 w/6gig ram = 1264 KH/s & I think I can get to 1500 KH/s
This article is the holy grail for 7970's in LTC mining
https://github.com/ckolivas/cgminer/blob/master/SCRYPT-README
I googled "invalid nonce - HW error". googles my friend