Intel P4C's with I845 based motherboards question

[teknocity]

Just wanted to know if there where any issues with running the current P4C (800MHz bus) processors on the older I845 chipsets, particularly on a abit IT7 MAX 2. Ive got XMS 3200 DDR ram so that should be ok, but will wit run at its fully fledged 800Mhz bus like the I875/865 succesors??
And hows overclocking on the mobos with these P4C's go like?

Thanks

 

[imNAKED]

The same question is on my mind as well. Can somebody please tell us if they have sucessfully run Intel P4C on an Intel 845E chipset?

 

[brainwave]

OK, I have put a p4 2.4C HT enabled on my Albatron 845PE PRO II mobo. I did ask Albatron if it would work and they said yes. And technically it does work. BUT the highest FSB I can run stable with this board with P4C and Corsair 3200 C2 is 190. At that FSB the 2.4C was running under-clocked at 2.28, but benchmarks with SANDRA and PCMark2002 were much higher than the same mobo with a 2.4B chip.
Since then there have been occasional random freezes, so I have further underclocked to FSB=166, which runs the 2.4C at 2.0, and the DDR 415 2-3-3-6. Even at this, the benchmarks are still faster than the 2.4B running at 533FSB.

Albatron says they are working on a BIOS revision which will support 800FSB and then I should get full speed out of the 2.4C chip. In the meantime, I get the benefit of HT which is running faster than the 2.4B ran even though the 2.4C is underclocked. There are some 845 boards which are supposed to support 800FSB, such as Aopen, but all they are doing is oc'ing to FSB 200 and setting DDR400 ratio to 2.0x. The real question is stability at that FSB on an 845.

My plan is to eventually buy an 865 board, probably an ASUS or ABit and move the 2.4C to that mobo. But for now the 845 board with HT is running underclocked, but fast and stable.

 

[brainwave]

OK, I have put a p4 2.4C HT enabled on my Albatron 845PE PRO II mobo. I did ask Albatron if it would work and they said yes. And technically it does work. BUT the highest FSB I can run stable with this board with P4C and Corsair 3200 C2 is 190. At that FSB the 2.4C was running under-clocked at 2.28, but benchmarks with SANDRA and PCMark2002 were much higher than the same mobo with a 2.4B chip.
Since then there have been occasional random freezes, so I have further underclocked to FSB=166, which runs the 2.4C at 2.0, and the DDR 415 2-3-3-6. Even at this, the benchmarks are still faster than the 2.4B running at 533FSB.

Albatron says they are working on a BIOS revision which will support 800FSB and then I should get full speed out of the 2.4C chip. In the meantime, I get the benefit of HT which is running faster than the 2.4B ran even though the 2.4C is underclocked. There are some 845 boards which are supposed to support 800FSB, such as Aopen, but all they are doing is oc'ing to FSB 200 and setting DDR400 ratio to 2.0x. The real question is stability at that FSB on an 845.

My plan is to eventually buy an 865 board, probably an ASUS or ABit and move the 2.4C to that mobo. But for now the 845 board with HT is running underclocked, but fast and stable.

 

[Davegod75]

Originally posted by: brainwave
OK, I have put a p4 2.4C HT enabled on my Albatron 845PE PRO II mobo. I did ask Albatron if it would work and they said yes. And technically it does work. BUT the highest FSB I can run stable with this board with P4C and Corsair 3200 C2 is 190. At that FSB the 2.4C was running under-clocked at 2.28, but benchmarks with SANDRA and PCMark2002 were much higher than the same mobo with a 2.4B chip.
Since then there have been occasional random freezes, so I have further underclocked to FSB=166, which runs the 2.4C at 2.0, and the DDR 415 2-3-3-6. Even at this, the benchmarks are still faster than the 2.4B running at 533FSB.

Albatron says they are working on a BIOS revision which will support 800FSB and then I should get full speed out of the 2.4C chip. In the meantime, I get the benefit of HT which is running faster than the 2.4B ran even though the 2.4C is underclocked. There are some 845 boards which are supposed to support 800FSB, such as Aopen, but all they are doing is oc'ing to FSB 200 and setting DDR400 ratio to 2.0x. The real question is stability at that FSB on an 845.

My plan is to eventually buy an 865 board, probably an ASUS or ABit and move the 2.4C to that mobo. But for now the 845 board with HT is running underclocked, but fast and stable.

almost the same sit. here but i'm using an asus p4b533