965BE Overclocking to 4.0

When you try to overclock everything you run into trouble because if you blue screen you are left guessing what caused it. Your ram has nice low timings and you could actually leave it alone because if you raise the fsb you will also raise the speed of the ram by default. You really need to let us know what your motherboard is (brand & model).
I had a 965 until I put it in my son's computer and I got a 980x. I have the 980 overclocked to 4200 and with just the multiplier and a little voltage. Unless you want to overclock to the max a reasonable stable overclock of the cpu is all you need , you really don't get much benefit out of going further and you could shorten the life of the cpu. I will say that overclocking does make a difference in performance but it gets harder the higher you go and if you can get to 4.0 and be stable that sounds good to me. The best way to overclock the cpu is to start at stock and increase the multiplier , and each time you do go into widows and verify it's stable , then raise the multiplier again and verify and repeat that until it's not stable and then add a small increment of vlotage untill it is stable , then continue again with the multiplier and repeat the whole process untill you reach your target number. If you can't get to you target then you can raise the fsb a bit.
The whole process is very tedious and time consuming but it has to be that way if you want a compltely stable OS. You just can't put in numbers because someone said they had this number or that voltage , each computer is different and each person makes different settings so your overclock is going to be different form mine and mine from yours. You just have to find where your computer is stable and be happy with that.