Overclocking Core2Duo

[m21s]

Not that well off on overclocking and have a few Q's

On a Core2Duo Set up running DDR2-800 RAM on a Gigabyte GA-965P-DS3

To get a small start would it be as easy as bumping up the CPU Frequency from 266 to whatever?

Having DDR2-800 RAM should eliminate having to touch that correct?
Because its already rated to run faster than 266? I think the max on DDR2-800 would be 400 (correct me if I am wrong here please)

Any tips to start somone out who is new to overclocking would be great with these chips.

 

[Cuhulainn]

I'm in the same boat. I've just gotten all the drivers and whatnot installed, and wondering what the process is to get the thing running closer to 3.0ghz. I've looked at the sticky in this forum for ocing the amd cpus. I can't seem to apply some of that information to my Conroe setup.

Any help would be appreciated for us noobs to o/cing!

 

[Pabster]

Just crank up that FSB until she fails to POST.

 

[Henny]

Go here:

Text

Now do a search using "DS3".

Don't post a question over there until you've done an adequate search. Questions like your's have already been answered and discussed.

 

[harpoon84]

Intel overclocking is damn easy, theres no multiplier to adjust (unless you get the X6800), no HTT bus, it's just a matter of cranking up the FSB and hoping your mobo and RAM can keep up.

Basically, C2D runs on a quad pumped 266MHz FSB, or 1066MHz effective. Multiply the FSB by the CPU multiplier and you have your clockspeed.

DDR2-800 will be good for 400FSB and beyond.

 

[m21s]

The reason I ask this is my buddy bumped his FSB up only 20mhz from 266 to 286 and his PC wouldnt post!

I suspect something with his memory multiplier? He has it set to AUTO which is the default, by him setting it to 2.0 will that give him the max 400fsb (1:1) on his ram?

 

[lopri]

Just find out your mobo's limit regarding FSB and ratios, insert the chip and crank it up. Wether it makes it to the FSB or not, you will find it out easily. Due to such low multipliers, there is not much you can do. I've got an E6600 and found its limit in 30 mins with a few reboots. Incredibiliy easy compared to Socket 939 OC'ing.

This is not, however, everything. (UN)Fortunately, there are alot going on underneath the user configurable BIOS settings, and if those were given to end-users, we'll see a whole different world. But I strongly doubt we'll see those BIOS with 975X/P65.

 

[lopri]

Originally posted by: CrazyJohn @XS

Q. Why can?t I overclock at all?
This issue is often mistaken with the issue below. Be sure to read this explanation.
Symptoms of no o/c?ing at all (may be one, may be all):
Cannot change PCIe bus speed, after changing to anything from Auto the system resets in POST before mem testing.
Cannot change fsb because system resets as above.
Changing any V in BIOS doesn?t make any difference in o/c.
Changing timing in BIOS doesn?t make any difference in o/c

Changing in my mind means ex. 267fsb (stock 266), 265fsb and so on. These are slightly (and more significant) changes which cannot be done. This is not a problem of >450fsb or sth. This is a problem of no o/c at all!
This is not a problem of a fsbwall ? this is not for you if you have already overclocked even a 1Mhz!

A. There are several possible causes of this problem:
ONE ? BIOS:
look below at disabling the Legacy USB storage detect option in BIOS
TWO ? VGA:
Your VGA card is probably making MB not to overclock. Try buying some crappy PCI /not PCIe/ VGA 1MB card (or 2, 4 MBs ) and putting it in, booting with only PCI VGA. It worked for me, I could overclock and when I finished I put my 7600GS inside. Everything is working quite ok If not, just try another video card but a different model.
THREE ? RAM:
This is the least well known issue today. I guess... replace ram and see if it helps o/c?ing... If so... just buy new sticks ;/ Sorry

Q. What should I do to overclock more? ? a fsbwall
A. First of all Disable all special features in bios, if you don?t use LPT, disable it. The chipset would very appreciate you not to have to be working so hard Then Disable in Advanced BIOS Features everything starting from Limit CPUID Max to 3, ending at Virtualization Technology (including these two mentioned). Then at Integrated Peripherals disable Legacy USB storage detect ? it?s an option which is required only if you have na USB hard drive. Set PCIe to 100Mhz, timings to 5-5-5-15 (or other high timings your mem is working with), set x2 for mem speed, set +0.1V for MCH, set 1.5V (or higher) for CPU ? to see if it?s not a cpu fault. You may also disable everything under PC Health Status menu... Finally, unplug all USB devices. Hope it helps! If no (for those >450fsb) it means the system overlockability has ended or mother board doesn?t like so much your ram or vga... Try then borrowing, and replacing to see if it works...

 

[myocardia]

m21s, you have one of four problems. First thing to do is lock your PCI bus to 33 Mhz and PCI-E to 100 Mhz. Second, set the RAM to run at 266, NOT at 400 Mhz. Then, just keep the timings the same as they were at 400 Mhz, and you should be able to get to at least 425-450 with those timings. If those things don't do it, your friend's power supply is too weak, and will have to be replaced with a more powerful one.

 

[m21s]

Thanks guys
I will pass on this info so far.

 

[evilbix]

Check your power supply before OC'ing. Then check the brands on hardocp's "do not buy" post for power supplies. If yours matches ANY of the ones there then I'd pass on OC'ing. A bad PS + overclocking = bad OC and/or dead parts. A bad power supply is something you don't want to push too hard. Once they reach near peak outputs they tend to send out too little voltage and will many times restart the computer instantly.

For overclocking intel chips there isn't anything special you have to do.

Here's how you do...

1) Lower the ram to the lowest divider speed.
2) Ramp up the CPU speed as much as it can while being stable. Lock the PCI and PCI-E freq. I forgot what they should be off the top of my head. However, they can lead to problems once you're overclocking more than 10-20%.
3) Now up the RAM speed with the aim being the speed it's rated for or a small amount more. (i.e. ddr2-800 running at 820 or 830 at most)
4) Now that you know the top speed that both will hit.. tweak it until your bench results are best.
5) Watch the chips temps during the benchmarks. Make sure it isn't too high or throttling.
6) Now overclock the vid card and still watch the temps on the CPU. If you're air cooling the GPU can push the heat up on the CPU if you're doing a high OC. The ambient temps in my case went up 5C when I oc'd the hell out of my X1900XT.
7) Grab a beer and load up your favorite game as a reward to yourself.

 

[killr Kadoogan]

Word up