Originally Posted by robertapril
I can't seem to be able to get a stable 4.5Ghz O/C on my 3570k.
I tried 1.3V, but P95 crashed after about 3 hours.
I was stable at 4.4 with 1.24V.
If anyone has suggestions, I'm all eyes.
So another member and I had a little chat about how crappyly our 3570k's would handle low voltage OCing. I don't know about the bins and the batches or whatever, but it seems there is definitely a difference in chips that are made these days vs the older ones. Maybe Intel has done some machining modifications or efficiency improvements or something.
I looked around on the Intel site and to my surprise they actually had technical support chat! I wasn't expecting much, but the guy I was chatting with was actually very knowledgeable and seemed to be well versed in what I was talking to him about; the high voltage requirement of my chip.
So Stickg1 said it exactly how it is, "I need 1.4v for 4.6GHz, 1.375v for 4.5GHz, 1.31v for 4.4, 1.275 for 4.3." My chip is actually a little worse. I need 1.288 for 4.365ghz and 1.216v yields 4.243ghz. Now I'm no pro overclocker, but I've messed with all the settings available to me and cannot get my chip to run past 4.243ghz at 1.216. (btw if anyone has any advise please do enlighten).
The WORST part is that once I built my computer (last week) and booted it up, the frikin mobo was running the chip at a voltage of .978-1.357!!! I thought maybe the mobo was confused or something. Anyways, after a long discussion with the Intel tech, he told me these two bits of information:
Me: the VCORE is still at a maximum of 1.35 and averages 1.28 (at default everything 3.4/3.8ghz)
Me: like I said, I have no idea if that's high or low, but I feel like it's high based on the other specifications of the 3570k and previous processors I've had
Daniel: any parameter between 0.8 and 1.4 V per core is considered normal and it will keep fluctuating in that range.
Me: Thank you very much but may I ask where you drew this information from?
Daniel: our data base sir.
Daniel: it should be also on the data sheets as well.
Daniel: ok excellent that you were able to access the datasheet, I was confident was there somewhere,
Me: yeah but I still don't know if this thing is gonna burn out at 1.35
Me: I'm not sure I trust the datasheet
Daniel: yes it supports really high voltages compare to previous ones
Me: so it seems like as long as temps are under control it's doing fine
So I don't know anything other than what I've laid out here, but it seems the later chips take more voltage which means you're going to be getting SIGNIFICANTLY higher temperatures at the same clock of others. It's unfortunate but it seems that it's just a lottery to get a chip that OC's at low voltage. What you have right now, is actually SIGNIFICANTLY better than mine which would need ~1.33 to achieve a 4.4 clock.
All I'm trying to do is express my sorrow and put it out there that it seems like there are much much MUCH better chips, then there are other chips and you my friend, well you might just have one of those other chips. Oh that and apparently you can push 1.5v through no problem as long as your temperatures are in check. I think someone else also said something similar many pages back. IB likes voltage, but not high temps, SB was 'cool' with high temps, but didn't like voltage. Don't know much, but that seems somewhat valid given the smaller construction of IB.
Oh and Intel are *****es for ditching the solder and screwing up their thermal base. I loved that I didn't have to spread my thermal compound over an itzy chip (usually AMD in the far past) making it less technique sensitive. Now they've gone and screwed it all up. Even if you know what you're doing your conduction will be mediocre.
Again, if anyone has some advise for both of us, please share. Thank you.
And thanks to Totally Dubbed. I'm in my last year of Dental school and kinda surprised I still remember all that bio junk. I guess I really did find it more interesting than I realized. Some of the folding patters are nuts! In the past, researchers have mapped out some more simple macro structures of folding (called secondary structure) and we'd have to predict how a string of amino acids would fold on exams. These folding studies are trying to predict Quaternary structures of REALLY complex proteins. Quaternary structure occurs when you get multiple proteins interacting with each other to make a mega-protein like Hemoglobin (a 'simple' one).
So just to put things into some perspective, imagine cleaning up headphone wires that are about a mile long. You'll start off with a roll or folding back and fourth, but eventually you just get a mess. So you end up doing sub folds...the wire doesn't interact with itself so it's relatively mechanical and 'easy'. Proteins are interactions between connected molecules which then must be folded and sub folded, then sub folded again before interacting and making direct covalent and ionic bonds to other proteins to produce a single harmonious structure that either just sits there and acts as a physicochemical communication terminal, or alters strands of DNA to encode the information to express the tit's, ass and otherwise godly proportions on those Victoria Secret models. Miranda Keer had a frikin baby and still looks like that!!!
Maybe I got a little carried away...sorry
Oh yeah and in case anyone is interested, I also made a time lapse of my build, it's an ITX system: http://www.youtube.com/watch?v=EOqZ-Xc3AA4Edited by eatkabab - 12/12/12 at 6:20pm