When it comes to overclocking in this current era there are two areas that we are looking to increase. The first of course is the high CPU frequency we can get and remain stable (unless you are a SS bencher trying to get the absolute highest frequency without regards to stability). The max overclock varies greatly from CPU to CPU. We see many people testing many processors to get the best of the bunch. This requires a lot of time and money which many do not have.
The second aspect is the highest memory frequency we can achieve. This here depends a lot on the CPU’s integrate memory controller but the motherboard and memory has quite a bit to do with it as well. We have seen many ram manufacturers release high frequency ram at default which is great but if the other two factors don’t play along then it is pointless.
We started our overclocking session based on the last time we had this processor in a motherboard. And that time the CPU would do 4.7GHz at 1.45v. Immediately we started with these same setting and the system booted right up. So, was to drop the voltage to the bare minimum it would be to get the same results, we were only able to drop it to 1.445v and keep it stable. We revisited the 1.45 to see what the highest frequency we could get and that ended with 4.9GHz. Another 200MHz on top of our best, which we really liked.
We decided to give the AUTO-overclocking feature a try. We must remember that each processor is different. And in our case, none of the settings worked at default as each had voltage settings that where too low for our CPU. One example was at 4.8GHz the UEFI wanted to give the CPU 1.3v which is not going to happen here.
Next, we ventured into the memory overclocking. We swapped out our Kingston Genesis memory which is our usual bench test kit for some G.Skill TridentX 2400MHz modules. These did 2590MHz on the Gigabyte Z77-UD3H but with a Intel i5 3570K, we are using an i7 3770K today. We that was eclipsed as we saw 2744MHz at CAS 10, not 11 as previously tested.