I also have a 3770K and have been stuck around 4.3 (have it set to 43*100.5 to be exact). This is on an Asus Gene V with +.055 voltage offset(LLC off). 4.4 is borderline stable and 4.5 is a no go.
Indeed.. was seeing how far i could go on auto.
I am able to do 5ghz with 1.37v And it passed 6 hrs of prime 95. with temps around 90c On Air.
Temps are good?
Did you try enable cpu pll overvoltage to see if it helps or not with stability?
No go as in no boot or just unstable uner light loads, etc.?
Quick question, I just checked my cpu pll voltage and noticed that with the auto setting, it is set at 1.80V and the sensor reads as such--where as CMDDRDREDD set his to 1.7125. What is the typical default?
CPU PLL Voltage Override (Overvoltage): What the Heck does it do?
So I asked that question to an Intel Overclocking Engineer his explanation was roughly: We went through the BIOS settings trying to find setting that if changed could help overclock our CPUs further. We came across this setting. Think of the CPU PLL voltage as a voltage that is provided to the CPU, but then clipped down to an approximate voltage. No matter what that input is whether 1.3v or 1.9v it is clipped (hypothetically lets say 800mv after clipping (he didnt say how much)) that way other devices can use the PLL voltage and clip to what they need. The CPU PLL Overvoltage allows for less clipping of that voltage. It can also reduce the lifespan of the CPU, but nothing noticeable.
The stock setting for PLL is 1.80v's raising it or lowering it may or may not help stability. Would be a try it and see tho....BSOD 0x124 sometimes is from PLL voltage if you set it too low for your chip or even too high.
Changing PLL voltage doesn't effect the need for Internal PLL overvoltage
Best description I could find about Internal PLL overvoltage so far. Kinda vague but gives a person an idea of what it does at least.
I've been doing a bit of messing about in my BIOS, attempting to get more than 4.6Ghz stable at reasonable vcore. Might not be able to do it, but I'm gonna mess with LLC and PLL voltage. Apparently with LLC off you may be able to squeeze more Mhz into a lower vcore. I tested this myself and I'm stable at 1.26v 4.5Ghz with LLC off (need +.15v offset to account for droop). With LLC set to high I needed 1.275v. Not a big difference but it gives a little room.
Going to try messing with increased PLL voltage to see if I can get anywhere that way at less than 1.35v.
edit: well, I couldn't eliminate WHEA errors without a lot of voltage. So back to 4.5
Um..... Lowering the pll voltage usually improves stability. This is the trend in the asus board forums at overclock.
I am running 1.65v
I tried 1.9, Has no effect.
No...only lowers temps. Placebo effect. Raja told me this on xtremesystems
Who's raja?
And does lowering voltage lower temps, or does Higher pll voltage lower temps.D:
Asus tech guy from Taiwan.
He says PLL voltage can decrease temps by a small amount when you lower it and mentioned some people think it's more stable. He said it's only placebo effect and only increasing voltage can gain stability, not lowering.
Now remember he is from Taiwan so english isn't his first language. It is possible he was thinking of vcore in terms of stability but I am certain he mentioned possible slightly lower cpu temps if you try lowering PLL voltage.
Anyway if your CPU will boot at 1.38v and 4.8Ghz but throw WHEA errors, I know for a fact that 1.5v and 2.1v PLL voltage doesn't do a thing. Vcore will.
Reported by component: Processor Core
Error Source: Corrected Machine Check
Error Type: Internal parity error
I always get Processor ID : 2
I've been doing a bit of messing about in my BIOS, attempting to get more than 4.6Ghz stable at reasonable vcore. Might not be able to do it, but I'm gonna mess with LLC and PLL voltage. Apparently with LLC off you may be able to squeeze more Mhz into a lower vcore. I tested this myself and I'm stable at 1.26v 4.5Ghz with LLC off (need +.15v offset to account for droop). With LLC set to high I needed 1.275v. Not a big difference but it gives a little room.
Going to try messing with increased PLL voltage to see if I can get anywhere that way at less than 1.35v.
edit: well, I couldn't eliminate WHEA errors without a lot of voltage. So back to 4.5