P4 Overclocking, AGP / PCI dividers still being used?

[Mavrick007]

<< That's cool! - I wasn't sure 🙂


So you're saying 174mhz fsb (some random speed) can still be a perfect 66 / 33 - that's bloody wonderful!

- do they have such chipsets for AMD cpu's yet?! >>



I have heard that the nforce 415 will lock out the pci/agp dividers at 33/66 when overclocking. I'm not sure if it's true, but that would be great considering the Athlon XP comes factory locked.

 

[AbRASiON]

<< I have heard that the nforce 415 will lock out the pci/agp dividers at 33/66 when overclocking. I'm not sure if it's true, but that would be great considering the Athlon XP comes factory locked. >>




Sounds good to me!

P.S to whomever said I can get 133 now are you sure?

I can get 333mhz ram speeds (166mhz) - full speed ram bandwidth.
133mhz CPU bandwidth (533mhz quad pumped)
and 33 / 66 PCI / AGP?

If so that's pretty much perfect.

Think we will get the same performance Tom did when he overclocked to 533mhz?

http://www6.tomshardware.com/cpu/02q2/020402/p4_2400-08.html

 

[knutp]

I got a asus a7n-266-e board for testing some weeks ago, and that has fixed pci. So I would guess that the asus a7n-266 and a7n-266-c also got it.

Im not sure if the p4b266 got it, but it does sound possible.

 

[Dimitri]

My experience with my Asus P4B266-C board was that it locked the pci/agp up to 133 bus, then increments from there brought them out of spec. Problem is as soon as you hit 133 bus the memory multiplier gets stuck at 1:1 so the memory will stay at 133. So of course if you run at 132 and set cpu:memory ratio to 3:4 then you are pretty close to running everything in spec except the cpu (assuming your memory is rated 333) and still getting close to 333 memory speeds.