https://bugs.freedesktop.org/show_bug.cgi?id=49981
--- Comment #18 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #17)
Um, you now seem to be putting mclk and voltage in the high state, while leaving the engine clock really low. Surely you'll fry the gpu by over-volting it.
No, it's fine. You can run with higher voltage, you just have to make sure it's high enough to support the requested clocks.