What values do I overclock my 970 SLI for 4k?

[Rossdowling321]

Power limit is at full now and so is temp at 91c, I've got fan coolers just to note.

I want optimal performance in 4k high settings, my 970s are EVGA Superclocked 2.0

So how much do increase the core clock by? what about memory clock?
I wanted 1400-1500 mhz core clock speed and maybe higher memory (will this help the 3.5gb 970 problem?)

Also is MSI better? or should i use precision X 16 since I have EVGA.

Just some help on what numbers to tweak and by how much, and any recommendations/warnings would be brilliant thanks

 

[cdabc123]

i use msi afterburner and love it. use it or all my gpus. just increase the mem and core till you see artifacts

 

[cdabc123]

when you approach the limit of the gpu you will see them when you run a benchmark. increase it about 20mhz at a time then run a benchmark and if everything looks correct increase it another 20.