New to overclocking

Upping the voltages boost the northbridge for higher clocks.

Setting the PCI Express Freq to 100mhz locks it in place. It used to be a problem in older boards where-by upping the FSB also upped the PCI freq, and that caused problems with hard drives and graphics cards. But it's not really a problem these days, but we still lock it anyway.
 
Ok. Your very helpful Cob.

Also when im happy with my overclock do i put the system memory multiplier back down to auto? If i do that then my memory freq goes well above 800.
Im still a bit confused about this part.
 
I wouldn't set it to Auto. Maybe x2.5 depending on how high you get to set your FSB. But you should be able to get over 400x7, in which case you'll be able to leave the memory multiplier on x2.0.
 
I have my FSB set to 350 at the moment. Speed fan is giving me 66C on cores 0 and 1 (just in windows). Is that exceptable?
But also another rate called 'core' is at 48c
 
Is that at idle or under load? Either way it sounds a little high for 2.45ghz, tho your voltage is still pretty high.

Download CoreTemp and use it to monitor the CPU temps.
 
Ok. Your very helpful Cob.

Also when im happy with my overclock do i put the system memory multiplier back down to auto? If i do that then my memory freq goes well above 800.
Im still a bit confused about this part.

My advice would be when clocking nothing should be set to auto, and everything should be set manually... Listen to what Cob is telling you ;)

Overclocking should be done in stages:

1. Diasble all the rubbish like E1ST...
2. Set Ram Multi to 2x
3. Slacken Ram Timings
4. Increase Ram Voltages to manufacturers recommended highest
5. Increase FSB in stages until you get stuck
6. Increase vcore
7. Repeat step 5 & 6 checking temps all the way until you're satisfied with the clock or limited by temps or other elements
8. Set ram to desired speed using the Ram Multi
9. Tighten ram timings
10. Show off to all your mates :D
 
I was using speedfan to measure temps but it seems to give me about 3 different core temperatures. Whats a normal temperature when not under stress and whats the max when under stress?

You mentioned tightining ram settings, ive not got to this bit yet so i odnt know much on doing that. There are at the Geil's recommended which is 4 4 4 12.

Ive reduced my vcore to normal, and will only up it if i get stuck.
 
I was using speedfan to measure temps but it seems to give me about 3 different core temperatures. Whats a normal temperature when not under stress and whats the max when under stress?

You mentioned slackening ram settings, ive not got to this bit yet so i odnt know much on doing that. There are at the Geil's recommended which is 4 4 4 12.

Ive reduced my vcore to normal, and will only up it if i get stuck.

Set ram to 5-5-5-15 for now

set Vcore to 1.35 for now

DONT use speedfan...

Download Intels TAT (thermal analysis tool) for temps

Download Orthos for testing stability afterwards
 
Idle temps mean very little. But try to keep load temps below 70c.

You can probably drop your CPU voltage down to 1.425v for a while if you wish too.
 
While running that Orthos and stressing my cpu the temps went up to about 67 after only a few mins. I ran it with my CPU voltage down to 1.35 and was running at 2100 (300 x 7)

Seems a bit hot.
 
Seems a bit warm, even if you're using the stock cooler.

Are you using the stock cooler?
 
Im running 2492 at 1.35v
Bus speed 3.56
Rated FSB 1424.0

No under stress 60C
As soon as i put it under stress using Orthos it jumps up to 68C then quickly reaches 72C.

Thats when i turn the stress off :( 1 min in all.

Maybe ill have to go get some new paste and reseat the heat sink and fan.
I will reset optimal defaults 1st and see what kind of temps i get at stock.
 
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Even when at stock the cpu goes up to 70 fairly quickly.

I did find an intel chart that gave a max of 80C. Ill have a play about tomorrow (Ive got the Witcher to enduldge now).
Ive learnt a lot about overclocking today. Cheers to all especially Cob.

Just as one last question, whick is better for overclocking ram 4 4 4 12 or 5 5 5 15?
 
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Isn't lower latency preferred thus 4 4 4 12 is better particularly in gaming which increases FPS? Anyway this Intel Temp thing I downloaded but do I have to test the workload on each core at 100%? How do I work this thing?
 
Im running 2492 at 1.35v
Bus speed 3.56
Rated FSB 1424.0

No under stress 60C
As soon as i put it under stress using Orthos it jumps up to 68C then quickly reaches 72C.

Thats when i turn the stress off :( 1 min in all.

Maybe ill have to go get some new paste and reseat the heat sink and fan.
I will reset optimal defaults 1st and see what kind of temps i get at stock.

Are you sure all four legs of the cooler are secured correctly?
 
After reseating the processor im getting it clocked to 2500 at 65c under load.

My RAM is now running at about 740 mhz (as per bios), although its 800mhz. Am i getting the most from the ram?
 
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