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Thread: 4.2 to 4.4 ?

Started 1 month, 3 weeks ago by robinlawrie
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 ...
Site: Overclockers UK Forums  Overclockers UK Forums - site profile
Forum: Overclocking & Cooling  Overclocking & Cooling - forum profile
Total authors: 7 authors
Total thread posts: 18 posts
Thread activity: no new posts during last week
Domain info for: overclockers.co.uk

Other posts in this thread:

Rroff replied 1 month, 3 weeks ago
I take it this is an i7 rig? The IOH Core looks very very high - whats the default?

Superewza replied 1 month, 3 weeks ago
What sort of watercooling?

JonJ678 replied 1 month, 3 weeks ago
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/...

robinlawrie replied 1 month, 3 weeks ago
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 ...

capriboy1978 replied 1 month, 3 weeks ago
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 ...

robinlawrie replied 1 month, 3 weeks ago
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.

BigBruiserAl replied 1 month, 3 weeks ago
cpu pll 1.3 and clock scew 100 pcs sorted me out from 4.0 -4.2 been running at 4.2 for over a month np. maybe they will help you and john 4.2-4.4

robinlawrie replied 1 month, 3 weeks ago
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.

BigBruiserAl replied 1 month, 3 weeks ago
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 ...

robinlawrie replied 1 month, 3 weeks ago
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?

 

Top contributing authors

Name
Posts
robinlawrie
9
user's latest post:
4.2 to 4.4 ?
Published (2009-11-12 02:42:00)
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...
JonJ678
3
user's latest post:
4.2 to 4.4 ?
Published (2009-11-12 01:08:00)
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...
BigBruiserAl
2
user's latest post:
4.2 to 4.4 ?
Published (2009-11-09 15:55:00)
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
Rroff
1
user's latest post:
4.2 to 4.4 ?
Published (2009-11-08 23:50:00)
I take it this is an i7 rig? The IOH Core looks very very high - whats the default?
Superewza
1
user's latest post:
4.2 to 4.4 ?
Published (2009-11-08 23:55:00)
What sort of watercooling?
capriboy1978
1
user's latest post:
4.2 to 4.4 ?
Published (2009-11-09 11:01:00)
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?
toon_mad
1
user's latest post:
4.2 to 4.4 ?
Published (2009-11-12 02:30:00)
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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