1055t OverClock Question/Help

I Recently overclocked my 1055t from 2.8 Ghz to 3.3 by raising the cpu bus frequency from 200 to 240 with 14.0 multipier which gave me 3360mhz, I also disabled Turbo Core mode. I just got my H80 Liquid CPU cooler And with prime95 Running my temperatures have not exceeded 35c. I want to OverClock to 3.8 but I don't know If i have to raise the voltages on my cpu or memory and if so what do i raise them to. I have 8 gigs of ddr3 1600 GSkill 4X2 and I want to keep running them at 1600 I dont want to overclock or underclock so I have been keying in some numbers and I dont know which one would be better/more stable.



CpuRatio+CpuBus
12.5x300=3750MHZ
13.0X300=3900MHZ

Dram Frequency lets me choice 1600 on both