Originally Posted by Neckbeard13
What I am more curious about though is did the lowering of vcore run relative with the lowering of PLL in terms of gains? and if I might ask, what board are you working this on?
To be honest the only reason I lowered the vcore was to see if the PLL made a difference. To me it clearly did as before when I went straight in at 5ghz and 1.40v (4.9ghz is stable at 1.40v) p95 failed instantly. But with a different PLL voltage I ma able to lower my vcore a notch and run prime95 for longer, albeit only 18 minutes longer but still. It could be that 1.395v works better than 1.40v for 5ghz, but seems unlikely.
Originally Posted by Anusha
I wonder if this 'best' PLL voltage is best for every multiplier or just 50x.
I cant comment on this, ive only ever begun changing PLL when im stuck with high vcore or getting BSOD, usually at the end of my overclock session so best part of 5ghz.
Originally Posted by goesto11
So is there a consensus/recommendation on were to set PLL voltage when starting to OC? Use default and work down or something else?
Personally I start with vcore and leave PLL at default, then once thats stable ill go with PLL until I find the best PLL. Then I will go back and see how low I can get with vcore again.
Originally Posted by Mms60r
I'm trying to understand this guys. My 3770k is at 5.0 Ghz. I'm using offset mode and under prime95 cpu-z shows 1.488v. PLL voltage is 1.8v. So if I lower the PLL my OC can become more stable? Can I try dropping my offset? How do I know when I got the "sweet spot" ?
Is that p95 12hrs stable? If so lowering PLL voltage could let you run a lower vcore. You could try guessing by lowering from say 1.80 to 1.70 to 1.60 and hoping for the best, but im going for more accuracy so im doing all pll increments. My guess is your sweet spot is whichever PLL voltage gives you most time in prime95.
Originally Posted by TLM-610
OP what version of prime are you running?
Prime95 27.9 Latest one. 27.7 and 27.9 both force AVX in the tests, which are the harder than previous p95 tests apparently.