I have 7950s running stable at 670 mh/s (currently scrypt though). They are the new sapphire 7950s that newegg had a special on. i have 4 per rig running at this rate stable. I'll share the settings when i get home.
Holy crap really? Nice work. I have to get tweaking my own it seems... Have been pretty happy just at around 590 for scrypt...seems I have some work ahead of me tonight...
edit: Please post your cooling used as well when you show the settings tonight. Thanks.