E4600 noob overclock

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Camberwell

Gawd
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Jan 20, 2008
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I have an E4600 with an Asus P5K-VM with 2x1Gb Corsair XMS2 PC2-5400 (no seperate graphics card), and right now I am overclocked with fsb@250 and multiplier x 12, giving me 3.0Ghz.

I want to try to overclock the fsb up to 333 with multiplier x 9 to get around 3.0Ghz with the 1:1 divider ratio - I would like to do this with the stock cooling and stock voltages.

My question is, is it better to have a high fsb and lower multiplier, or the other way around (ie leave it at fsb 250 x 12)?

Thanks!
 
The performance difference is marginal if anything. RAM speed makes hardly any difference to performance with C2D systems, so if you want to get the most out of your CPU you'll want to use a high multiplier so you aren't FSB-limited.
 
Zero82z said:
The performance difference is marginal if anything. RAM speed makes hardly any difference to performance with C2D systems, so if you want to get the most out of your CPU you'll want to use a high multiplier so you aren't FSB-limited.
Click to expand...

Forgive my noobness, what happens if you are fsb-limited? Thanks!
 
Camberwell said:
Forgive my noobness, what happens if you are fsb-limited? Thanks!
Click to expand...

Man thats hard to explain, I just made three paragraphs and deleted each one each time because its a bad answer.

Almost every E6000 series Core 2 can reach 3.3Ghz on air cooling. There are many ways to go about this. If you have a CPU with a high multiplier, such as an E6700, with a multiplier of 11, to reach a nice 3.6GHz CPU overclock you simply need 330Mhz (aka 1320Mhz) FSB. This speed can be easily handled by almost any chipset (motherboard). To reach the same 3.6GHz CPU overclock on a much cheaper CPU (say an E6320) with the lower CPU multiplier of 7, you have to reach a huge 520MHz (aka 2080MHz) FSB. This FSB can only be reached on much higher end chipsets, such as the bearlake family, perhaps 680i, or perhaps P965.

FSB limited simply means your chipset cant support the needed FSB speeds, but your CPU is still able to overclock higher! The solution: get a CPU with a higher multiplier. The problem: thats more expensive. The other solution: get a chipset with a super high FSB support. Problem: thats something of a crap shoot (your best bet here is a P35 based motherboard, I suggest the DFI blood Iron).
 
Well the high multiplier isn't a problem, the E4600 I have has a multiplier of 12 (M0 stepping), but I have read that the 800 FSB cpu's like mine hit an fsb overclock wall at around 350 or so...not really an issue for me, as I mentioned in the original post I'm only aiming for around 3Ghz as for now I need to keep the cooling (and therefore the voltages) stock. My mobo is the Asus P5K-VM.
Thanks for everyones replies, I think I'm getting a handle on all this!
 
Well, a limit of 350FSB isn't a problem since with a 12x multiplier that would give you 4.2GHz :D. Plus, regardless of what you're "aiming for", you'll end up trying to see how far you can push the CPU anyways.
 
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