If you own a Geforce GTX 980 or GTX 970 graphics card and you want to learn how to flash your card with a customized high-performance ROM, then you've come to the right place! This tutorial will show you how to unlock the full overclocking potential of your GTX 980 and enable you to achieve the highest possible frame-rates in-game. The High-Performance GTX 980 Custom ROM clock speeds are outstanding and tested completely stable when applied to a standard GTX 980 on water cooling. This process will work on any GTX 980 reference card. Please note that you must have sufficient air or water cooling to run your card at higher clocks speeds and voltages, otherwise GPU or Memory burn-out may occur. I recommend replacing your GPU thermal compound with Antec Forumla 7 Nano Diamond Thermal Compound, to ensure 100% efficiency in heat transfer from your GPU to the heat-sync.
 
Tutorial video: https://www.youtube.com/watch?v=zp7XIIpLssM

Scarlet-Tech
Do note: if you have a single bios and you brick your card, it will cost to fix it. If you have dual bios and you brick one bios, it will not void your warranty.

Very, Very True.

will it be ok on the Super clock edition or just reference card

I'll pass with my luck it's a BIOS with Stuxnet and will end up coin mining for some billionaire.