Are the clocks applied?
They are! The overclock is 100% via BIOS mod
Why not? Undervolt for better power consumption, every GPU can be OC for better hashrate.
I will reformulate the question: Have you tried overclocking that video card with good results? Because I have read that it wont make any different
Zcash is core intensive you don't need there memory OC.
Maybe core overclocking?
THank you!