Overclocking an Intel Rig

BigDom · 5 Apr 2006 at 16:28

Hiya

I've just put together my first Intel Rig, used mainly for Folding, which need a bit of a tweak to make it even faster

...

It's using the 2.6Ghz Dual core Processor on a AL8 Abit mobo with 2gig Geil Ram.

Cooling is using the Default Retail HSF for now but if that becomes a problem will be replaced.

Anyway I've never OC'd a P4 before so am looking for tips etc. on how to try to get the best out of this rig

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Thanks.

BigDom · 5 Apr 2006 at 16:53

BillytheImpaler said:
I don't really have anything constructive to say here but...

w00t! New dual core FAH rig!

*grins* Maybe I should pit this rig against your two measly CPU's

BigDom · 5 Apr 2006 at 17:08

Thank's Guys, from memory the CPU is running at 133fsbx20, does that mean that currently the RAM (GeIL 1GB PC5300 667MHz Value DDR2 Dual Channel) is running at an underclocked speed? Thus bumping up to say 166 without touching the divider will in most probability Succeed.. I am expecting to need a new HSF I hasten to add but wanted to see what I could get out of it without. The HSF by default does look pretty damned poor.

BigDom · 5 Apr 2006 at 17:15

PC-M Vip3r said:
what socket Processor is it?

Dunno - lol... LGA775?

BigDom · 5 Apr 2006 at 17:43

Raikiri said:
Big dom, would you mind listing the overclocking options on that board?

CPU Voltage
Memory voltage
Chipset voltage
FSB
Multiplyer

Cheers

all of the above.

CPU is Intel Pentium 4 805 Dual Core "LGA775 Smithfield" 2.6GHz

BigDom · 5 Apr 2006 at 18:04

Multiplier is currently at 20 and go's down to at least 14 I believe.

FSB I have been told will go to 299.

The rest I'm not sure.

BigDom · 5 Apr 2006 at 18:17

For reference currently Abit nGuru is showing temps of :-

CPU 35degC
System 27degC

That's folding on both cores so 100% on both.

BigDom · 5 Apr 2006 at 23:39

Well I've done a little messing...

Pushing it up to 147 FSB with a .25 increase in volts. Seems stable with both cores folding and 38degC temp. Not sure how good that is.

I tried 150fsb with a .5 volt increase but no go.

So would like some tips to get it a little higher

BigDom · 6 Apr 2006 at 00:04

Raikiri said:
Do you mean 0.025v and 0.05v?

Really it should be going higher than that, mine runs fine at 166fsb stock volts.

Make sure the ram is set to 1:1 and keep trying.

yeah I was expecting more

- and yes your obviously right on the voltage

...

I'll check the ram timing although it's speed appears right when I look at it (DDR500odd).

BigDom · 6 Apr 2006 at 01:33

Is there anything similar to the HTT on AMD chips which needs slowing down when you start clocking much?

BigDom · 6 Apr 2006 at 01:41

eah I'm pretty sure both are locked

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BigDom · 6 Apr 2006 at 10:25

OK, PCI-E is locked to 100, I'm assuming there is an internal divider knocking PCI to 33 as no direct setting I can see.

149FSB, with Memory at 1:1, boots and so far is running stable at 100% load.

150FSB flat refused to boot properly if at all, usually have to do a CMOS reset.

It's as if I'm missing a setting somewhere.

Any thoughts?

BigDom · 7 Apr 2006 at 20:10

WJA96 said:
Set the PSB to 1066, then you can go to 299MHz, otherwise the Intel clock-block kicks in.

YEY thankyou, I KNEW there must be something I was missing as I'd been told the board was 299 capable....

Running at 166fsb now and 39degC at 100% folding load

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BigDom · 7 Apr 2006 at 20:39

monkeypants said:
Ahh, sorry for not telling you that

I have no idea how accurate that temperature is if you're using the software monitor. If you're using some more accurate method, raise the speed! That chip should be 100% stable much faster than that.

hehe one step at a time

...

That is the Abit nGuru monitoring software temperature so granted might not be 100% accurate ( probably not to be honest ) but I agree it appear's there is more to get out of her... Although I understand RAM might be a limiting factor as not doing 1:1 is a nono?

Oooo 1500 posts *smiles*

BigDom · 7 Apr 2006 at 22:41

5300 - was thinking that was 166 not 333

BigDom · 8 Apr 2006 at 12:19

monkeypants said:
The motherboard BIOS is good in that it tells you the RAM speed for each divider when you select them. Set the divider as high as you like, but try and keep the RAM speed below 667 (unless you want to find out how fast it'll go.)

hehe Not to worried about the RAM now

- up to 180FSB

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Stock volts too... Mmm Wonder if I'll manage to get past 200

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BigDom · 8 Apr 2006 at 16:40

Looks like 187 is max stable.. had to up the voltage to get it stable.

BigDom · 8 Apr 2006 at 17:52

m3csl2004 said:
you still using stock cooler? - a clock smith will be plenty hot, maybe get a big t

yep stock cooler, 43degC according to nGuru at 100% load (folding on both cores ).

Fortunatly the case, which is home made and wooden, has very good airflow so plenty of cool air. 2 80mm feeding air in and 120mm extracting with nothing of consquence to impede the flow. The PSU and CD are well above the board ( it's a tower sized case that doubles as my bedside table ) and the HDD is bolted vertically to the front of the case.