I think the card's (stock) BIOS would not push the past the reliability voltage anyway. So even if one sets the slider extremely high, the clocks you can actually reach will be much lower. So one needs to overvolt, or a install seriously modded BIOS to work around that restriction.
As far as I know the stock BIOS is not limiting you from increasing the core clock speed even after it hits the max stock voltage, and we would only require overvoltage during normal circumstances to get the clock stable, but for scrypt-jane it could be stable without massive overvoltage.
The poster (
Acad) was kind enough to provide a
screenshot and while it could be considered a 286 Mhz OC if we were to compare it to the boost clock, it's still quite amazing. He noted "Driver will crash if you do anything else that uses the GPU ex a website " which again means that it's only stable for scrypt-jane.
