• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Want to overclock my CPU, where do I start?

aph

aph

Associate
Joined
27 Oct 2005
Posts
96
Hi guys, was just wondering if someone can point me in the right direction of some good C2D overclocking guides.

Been looking at the MIT settings on my Gigabyte motherboard, and there's lots I don't know about.

Help would be appreciated!
 
Okay, that was probably pretty dumb posting in the CPU section and not the overclocking section, as it implies I haven't looked at the stickied guide. Which I actually have. The thing is it just talks in rather general terms about overclocking.

Is there a guide a little more tailored to Gigabyte boards, and Core2Duo processors? I've tried a few google searches, and I haven't turned up anything great :|
 
aph

Many people on this Forum use Gigabyte boards.
Although the procedures are the same regardless of brand.

You will need to list your components, MB, CPU, RAM etc.

Mod
Can this thread be moved please.
 
Right.

CPU = C2D E4500
Motherboard = Gigabyte P31-S3L
RAM = Samsung 2x2GB PC2-6400

I'll write down the settings I'm conused about in the BIOS and post them up on here.
 
Right, well there's one setting I think I understand:

CPU Host Clock Control

- Right now that's set to auto, but I presume that's where I change the CPU's FSB setting... simply upping that increases the speed right?

But then do I Need to change:

PCI Express Frequency

- This is currently at auto, would I need to set this to a set speed.

I don't know what:

CIA 2

Performance Enhance

Robust Graphics Booster

&

High Speed DRAM DLL Settings does

also

would I need to change:

System Memory Multiplier

So all in all, a few queries.
 
just set the memory multplyer to 2, and up the CPU Host controll by 25 each time.

keep everything else on auto, and run a blend test for 20mins inbetween each step up.

having said this you can probly up the CPU host controll to 333mhz straight away.
 
just set the memory multplyer to 2, and up the CPU Host controll by 25 each time.

keep everything else on auto, and run a blend test for 20mins inbetween each step up.

having said this you can probly up the CPU host controll to 333mhz straight away.

Think I understand that. Is a blend test a setting in Prime95?
 
Hi aph

I have just upped my FSB in 5 steps at a time from 3.16 GHZ I'am now at 3.8 GHZ, I did this in the bios... I also turned off speedstep to get a true reading at what the cpu numbers were..

also get this proggy to do a stress test Orthos Stress Prime 2004
 
Last edited:
Hi aph

I have just upped my FSB in 5 steps at a time from 3.16 GHZ I'am now at 3.8 GHZ, I did this in the bios... I also turned off speedstep to get a true reading at what the cpu numbers were..

Hi, just tried the setting as advised above. As yantorsen mentioned, I jumped straight to 333MHz. Unfortunately, the system didn't boot for a few secs, and then when it did - according to CPU-Z everything is as before. So I presume the BIOS didn't like the settings and reverted back to it's default. How annoying.

How do I turn off speedstep?
 
Hi, just tried the setting as advised above. As yantorsen mentioned, I jumped straight to 333MHz. Unfortunately, the system didn't boot for a few secs, and then when it did - according to CPU-Z everything is as before. So I presume the BIOS didn't like the settings and reverted back to it's default. How annoying.

How do I turn off speedstep?

maybe try just starting the CPU host controll (FSB) at 300mhz to get you going, then go in steps of 20mhz on the FSb.

if it's unstable past that then you may have to start upping volts. but refer back to us here when you get that far :)
 
Yeah, I thought you might say something like that. Currently the BIOS on my board doesn't present that option. Whether it's just not there, or there under another name I'm unsure.
 
Yeah, I thought you might say something like that. Currently the BIOS on my board doesn't present that option. Whether it's just not there, or there under another name I'm unsure.

press Ctrl + F1 in the BIOS main screen, should give you some more options.

and set the memory performance to "standard" rather than it's default "turbo"
 
333 Mhz might be a bit much to start with.
11 multiplier on that CPU.

He/She would need quite a bump in the vcore to pull that off.



CPU Host Clock Control
toggle to manual
Set to 266mhz initially
That will give you a 33% overclock for starters


PCI Express Frequency
Could be left on auto
or manually set to 101
some folks advise manually setting 101

CIA 2
Leave disabled


Robust Graphics Booster
Leave on auto


High Speed DRAM DLL Setting
Leave on option1
 
Last edited:
PCI Express Frequency
Could be left on auto
or manually set to 101
some folks advise manually setting 101

What does this actually do? I've never bothered doing it.




and I was think he/she was using a 266mhz x 9 cpu like my quad, silly me.
 
The Auto setting might not set 100Mhz correctly.
Some times it just selects a ratio based on the CPU strap and if you overclock the FSB it throws the clock way off.
Manually setting 101 forces this clock to 101 and not a fixed division of the FSB.
This isn't really an issue these days it's more old school but still worthy of mention.
 
333 Mhz might be a bit much to start with.
11 multiplier on that CPU.

He would need quite a bump in the vcore to pull that off.



CPU Host Clock Control
toggle to manual
Set to 266mhz initially
That will give you a 33% overclock for starters


PCI Express Frequency
Could be left on auto
or manually set to 101
some folks advise manually setting 101

CIA 2
Leave disabled


Robust Graphics Booster
Leave on auto


High Speed DRAM DLL Setting
Leave on option1

Hi, I read this after having rebooted. I first tried 300Mhz. Again, no luck. Went back to BIOS, actually thought about it for a sec, and yeah realised that 300 x 11 = 3.3GHz = possibly a stretch too far to begin with. I've just booted at 250MHz (so... 2750MHz). I'll reboot at 266MHz, and then stress test it.

I've changed:

Performance Enhance

to 'Standard'

What exactly does 'Turbo' do? Sounds bizarre.

Also I'll set the PCI Express Frequency to:

101.

Thanks for the info guys, looks like I'm getting somewhere... slowly
 
Last edited:
Back
Top Bottom