ok ive got my rig nice and stable at 4.2 now.. prime overnight, linx 20 passes on max etc..
the temps peak at about 65 degrees (watercooling) and ive got the vcore set to 1.36v (in windows i get 1.32v, drops to 1.30v under load)
i feel it could go to 4.4, but ive tried raising the vcore all the way up to 1.435v (1.4v idle in windows, drops to 1.39v under load, and also raised the qpi ...
I suspect you've got ioh core and pll muddled up there, as ioh core starts at 1.1 and pll at 1.8.
I think the issue lies with uncore ratio or with clock skews, throwing more voltage at it isn't getting me very far either.
I'm currently trying to force 210 stable by throwing voltage at it. Not great success, though I'm in windows it's definitely not stable. Do you have turbo turned on/...
ahh yes i expect i got them muddled.. i was writing a little while after my last bios visit.
my watercooling consists of an ek supreme cpu block, a black ice triple rad, 3x noctua 120mm fans and a ddc 18w pump and res combo.
yes i have turbo on, had it on since i got it.. trying to get 210 bsck and it boots fine into windows at that, but just craps out when i stress test (but pretty ...
IOH core? is that vtt? If it's vtt intel recommends around a .5v differnece between this and vdimm, although if you need less don't raise it to make this difference. It's about stabilty iirc
I have an IOH voltage is bios, can't recall exact name but default if 1.1v. Recommondation over at xs is this needs to be upped to 1.24v for 200bclk. I've got away with it at 1.2v.
This a ...
yeah its a gigtabyte ud5 mobo..
running my IOH at 1.22v
vtt is qpi voltage i believe.. mine is at 1.35v and my vdimm is at 1.66v, so currently a
.31v difference.
lol i think we are all getting confused now. do you mean ioh or pll voltage? my pll is already up from 1.8v default to 1.88v my IOH is up from 1.1 to 1.25v
thanks for the advice though, ill try that tonight when i get home.
Quote:
Originally Posted by robinlawrie
lol i think we are all getting confused now. do you mean ioh or pll voltage? my pll is already up from 1.8v default to 1.88v my IOH is up from 1.1 to 1.25v
thanks for the advice though, ill try that tonight when i get home.
if that was to me i mean CPU PLL mate ...
hmm i also read on another forum after this somone who dropped their pll voltage rather than raising it... this is the first times ive heard of people dropping a voltage to get a higher clock... is this something ive missed?
oh just out of interest JonJ.. you say you are happily at 1.425 and 60 degress... is that 1.425 in bios, or under load in windows? i ask because to get 1.425 in windows id have to set it to like 1.46 or 7 in bios...
How long has the loop been running? I'm seeing much better temperatures than that with a similar system. I'm wondering if there's air in yours, or if the block mounting is a bit off. It'll only be louder if you're running all the fans at 12V, once stable you can experiment with slowing them down to reduce noise. I think the problem is turbo. The instability is too odd, with too little information available through...
Quote: Originally Posted by robinlawrie lol i think we are all getting confused now. do you mean ioh or pll voltage? my pll is already up from 1.8v default to 1.88v my IOH is up from 1.1 to 1.25v thanks for the advice though, ill try that tonight when i get home. if that was to me i mean CPU PLL mate intel max rec is 1.88, auto is 1.8 i use 1.3
IOH core? is that vtt? If it's vtt intel recommends around a .5v differnece between this and vdimm, although if you need less don't raise it to make this difference. It's about stabilty iirc I have an IOH voltage is bios, can't recall exact name but default if 1.1v. Recommondation over at xs is this needs to be upped to 1.24v for 200bclk. I've got away with it at 1.2v. This a gigabyte?
you wont even notice the difference, i would be happy at 4.2ghz which im currently at, benchmarked at 4.5ghz and didnt see a massive boost, in the end i went back to 4.2ghz knowing my voltages and temps are safe
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