How do I get my Prescott 3G to clock in on a P4B533?

[Slugbait]

Been wracking my brain for a couple of hours, going in and out of my BIOS and reviewing the manual. Can't seem to get this to work.

Just got a Prescott 3.06, and I'm trying to get it up and running on an Asus P4B533 mobo. I tried cranking the external frequency to 200, but the manual CPU speed still shows a max of 2.4G. I tried several other things as well.

Does anybody know how I can get this puppy up to speed? And is there any headroom for overclocking?

TIA

 

[Furen]

have you checked what your frequency in windows is? the bios might just be misreporting.

 

[Rock Hydra]

Maybe your board doesn't suppor the prescotts or maybe a BIOS update is in order.

 

[Stumps]

easy answer, you board doesn't support this CPU at it's full speed, you need to operate it at the 800mhz fsb, your board only supports the 533mhz fsb, buy a new board if you want it to run at full speed..or try and overclock your board, but i doubt it would reach the 800mhz(200mhz) speed

 

[Slugbait]

Thanks for the answers. I got this proc from a family member and didn't know what it was...it's not retail, and I couldn't find the markings when googling. He wrote on the plain brown box "Prescott N 3.0 2M". I figured he didn't know what he was writing, cuz there are no 2M Prescotts in the 478 flavor. So I downloaded CPU-Z and found out it's Gallatin 3G proc, which really sucks for me since there are hardly any friggin' mobos for this damn thing! I found just two, both are Intel mobos, both are OEM, one's an 865 and the other is an 875.

I also just found out from CPU-Z that I don't have the latest BIOS as I had always believed. With a bios flash, I might be able to take this thing to 3G, but I still lose out not only on the HT bonus of the chip, I also lose out on the EE. Considering I also have an unlocked 6800 running on a slow 4x AGP bus, I'm really losing out on some serious perf by sticking with my P4B mobo.

I figure I'll go for the D875PBZ up at newegg. It's not a bargain at $126 (plus I need to buy new RAM), but they got me by the proverbial balls on this one...there just aren't any other mobos out there. On the bright side, for a free gamer's proc, it's worth it to spend a little cash to get the most out of this CPU.

 

[o1die]

You don't need to spend that much for an 875 board. The 865 works very well, and you can get one for about half that price. My 865 msi overclocks a 2.8c to 3500, an easy 25% boost with no increase in voltage. Newegg sells some 865 refurbs starting at $32 without accessories that will work fine.

 

[Slugbait]

Originally posted by: o1die
You don't need to spend that much for an 875 board. The 865 works very well, and you can get one for about half that price. My 865 msi overclocks a 2.8c to 3500, an easy 25% boost with no increase in voltage. Newegg sells some 865 refurbs starting at $32 without accessories that will work fine.

There was only one socket 478 refurb I saw at newegg compatible with the Gallatin, but it was a PC Chips board, and it has SiS chipsets...no SATA, no RAID, no gigalan, only two RAM slots, etc. Besides, I haven't seen much on the 'net indicating if any other 865 mobos support the Gallatin, and the one Intel 865 I found was actually more expensive. But thanks for the reply.