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"Overclocking past a max FSB"

ok, so my motherboard in one of my PCs has a 333mhz FSB. I just installed a 2800+ Barton into it (on a GA-7VAXP Rev1.1 Mobo).

Its on an FSB of 334 atm, never exactly on the said FSB as always.

Anyway, on a mobo with a 333mhz FSB, how much further over that could I get? I just raid in PC format I could put a better northbridge cooler on and put the excisting cooler on the southbridge to get further past the max FSB. This work!?

Thanks for any help.


Dan.

What type of modem is it? Find out what it is, some brands will work better than others. On board stuff gets affected as well at high speeds.

In thinking about it, aren't you getting broadband in? If so, just take the modem out.

modem. everything else is onboard.

And Hercules 9800 Pro.

Ok, ill have a play next week after some decent usage

There is no proper answer to that. Some cards can handle higher frequencies better than others. What do you have fitted?

ok, wats the max the PCI and AGP should be?

You seem to be getting decent temps. So I would say raise the voltage a touch, try 1.7 Volts Vcore and that might make it stable at 2375 MHz.

As for your PCI and AGP buses, the maximum that you can take them to before you start to break them is dependent on what cards you have. Some Sound Blaster PCI cards have been known to go as high as 50 MHz, 17 MHz out of spec, without problems. I would expect to get issues at around 36 MHz with most things, but it is trial and error.

I have an nForce 2 board now, so it isn't an issue for me.

You don't want any grooves at all on a heatsink. A perfect mirror flat surface is the optimum. If you lap properly you won't get a concave surface, so it will be better to the tune of several degrees normally.

And you won't get a vacuum in any case, the Arctic Silver or any thermal paste fills up the gaps. AS5 is so good because with a very well finished heatsink, you'll need very little of it to fill in the microscopic valleys on the heatsink and CPU core surfaces, and the AS5 molecules conduct the heat much better than tiny pockets of air.

[Edit - that was a fluke, you hadn't posted when I started typing.]

Well, I just cleaned and lapped my Heatsink, applied the Artic 5 (MAN ITS SOOOO EASY!!!). Ran 32oC Idle @ Stock 2.09 mhz. Now at 37oC Idlish at 2187.5mhz. Not much, but Im gonna give it a week. I managed to get it to 2375mhz before it crashes at 39oC with no added Vs.

Whats the Max my PCI and AGP should be? I've never been able to get this far before.

I have Memory (white speckle) artefacts in 3D Mark now, but it no other games, even FarCry. And a score of 5807.

I do lap my heatsink. If you do it too much though, you remove all the grooves and a vacuum forms, so the CPU snaps when you take the H&F off... lol!

Just for fun I put some Artec on an XP2400+, pretty easy. 2oC drop already. Looking good. Should drop a few more when its formed properly.

Even if you do get a better motherboard and ram you may still not be able to overclock your chip very far, some chips are not great at overclocking at all, you may have an athlon xp 2800+ with a core on that was from a batch that was tested at 2800 max stable running then you will be lucky to push more out of the chip and make sure your system unit is stable, I find P4 chips are much better at overclocking and because of there Heatspreader on the cpu they are also better at cooling (unless you go for the 64bit amd cpu's that also have a heatspreader), I have a P4 2.4 chip that ran at 3.2ghz just on air but i also had in one of my other machines a P4 2.8 that would only do a max of 3gig on air with the system being stable.

colin