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Voltage

arc@css

arc@css

arc@css

Caporegime
Joined
8 Nov 2008
Posts
29,406
Hey,

After changing the voltage to 'manual' in the bios am I right in saying that its the vdimm and vcore that you increase by 0.5 increments. I'm assuming that the reason I struggle to get a stable overclock past 3.0ghz is because there is not enough voltage. Haven't yet tried upping the voltage. Hope I don't hear a pop.

Cheers.
 
You should only need to up VCore gradually at first. Leave everything else on auto until you're at the point of fine tuning. 3.0 should be doable under 1.3V, I'm on a stable 3.2 clock at 1.2250V at the moment.
 
lol Wayne. :D

Just checked my Vcore and before I even attempted to increase it further past 3.0 it is reading 1.556. That seems high to me. Is that reading telling me not to bother?
 
MikeHunt79 said:
Does that even happen now? I thought c2d's and c2q's have thermal overload protection...
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That's what I heard also, not tested it myself!

Also I hope this Thermal protection can't be *disabled* in the BIOS by mistake! :p

MikeHunt79 said:
I've done it with old stuff, it's a distinctive smell! :D
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I think its at about 100°C that computer components start letting off a strange metallic aroma, anyone who has left a baking tray in a scorching oven with no chips on it will know the smell as will those who lock the GPU's fanspeed to 10% and then run furmark for an hour! ;)
 
Big.Wayne said:
That's what I heard also, not tested it myself!

Also I hope this Thermal protection can't be *disabled* in the BIOS by mistake! :p
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Ahh, I know what you mean now with the BIOS thing... I think the chips may still have some sort over thermal shutdown thing tho, but I'm also not that brave, even with my old e4300! ;)

I remember that vid where they were taking heatsinks off P4 chips while running quake, P4 was fine, it just crashed, and alongside was a Socket A athlon with smoke pouring out of it! :D
Big.Wayne said:
I think its at about 100°C that computer components start letting off a strange metallic aroma, anyone who has left a baking tray in a scorching oven with no chips on it will know the smell as will those who lock the GPU's fanspeed to 10% and then run furmark for an hour! ;)
Click to expand...
Ahh, that missing 0 makes such a difference! :p ;)

Audio amps can make that smell also, sometimes you even get a lovely black mark across your shiny anodized heatsink! :D
 
Under 'PC health status' in the bios the cpu Vcore is about 1.32 yet in 'Intelligent Tweaker' it reads 'Normal CPU Vcore' 1.556 .
(system voltage control = auto)

edit : Mobo advice booklet reads that system voltage control, at default, is set to manual. Thing is it isn't, its always on auto unless you change it of course.

Of course, this also means that I can't get the most out of my ram.
 
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Get the bios of auto, particularly on cpu vcore, my method is, find the vid via coretemp, then use this as a starting point, sometimes you can actually go lower than the vid. but i normally start at a clockspeed that i know my cpu will do on stock volts, if stable ill try and bring the vcore down, then when i push for a higher oc, im always working from known stable settings, its a bit slow but it pays off in the end.
 
Yeah just take Vcore options off auto and start at something low (easier to test for too low a voltage than too high) like 1.2v, if it's stable keep taking it down. If it's not then take it up one or two increments a time. 1.556 is too high really and verging on dangerously so.

Oh and use something like prime95 to test stability.
 
Appreciate the helpful comments chaps but on reflection I think I'd better get a mate round. All mobo bios are different and what I really need is a basic beginners guide, better to have someone there to answer questions as I go through it. Thanks for the responses though. :)
 
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