No, the vcore has nothing to do with uncore. If it works it works, if it doesn't, it doesn't. You could try setting 1.31vcore and waiting to see if you get problems with it; though if you wanted to increase the clock speed, then do that now. After you're at max clock speed you want for core, you can increase uncore speed to continue improving the OC
Well ideally I'd want to see how low voltage and stable I could get 4.4ghz at before even thinking about 4.5ghz right? If i bring down my vcore in doing this, what would help maintain the lower voltage setting, vrin in this case? It's where i started getting my current voltage stable.