P4C800 w/2.4b

Just ordered a P4C800 and 2x 256 Buffalo 3200 (winbond) to replace my p4b533/1x512 corsair xms 2700.

I can't really afford to replace the proc at this time but was wondering if this board has dividers to allow for DDR400 operation with a 533 bus (or an OC thereof). I've verified this chip (2.4b b0) at a max (stable) 170fsb on this board.

Basically I just want to get PAT functioning w/my 2.4b...possible or no?

Word has it PAT only functions on 800FSB procs.

how would that work exactly? Inadequate dividers for 533 chips? BIOS Check? Chip Level detection?

PAT isn't an on chip solution afaik so it seems like a matter of "won't" not "can't"

Well...newegg actually sent me a P4P800 (I could get the p4c800@springdale price buit I'd rather not deal with the downtime)

This board is pretty sweet. A couple quirks but 1006 bios adds the vcore i needed to really shine.


On PAT: It does work...on 1:1 ratio. With my 2.4b I can run dual channel ddr333 with pat and get ~3800 in sandra mem bench.

Unfortunatley things get weird once I started to oc.

Running at 163 fsb, Auto runs memory at ddr~320. By specifying DDR333 in bios CPUz Shows the ram running at 202.3 (ddr404) but the mem bench scores never go above ~4100

Lowering timings dont help mem scores AT ALL tho 3DMark sees a minimal boost (within margin of error)

Maybe I'm on crack but 4100 seems pretty low for dual channel ddr400 cl2/2/2/5

Mem is Buffalo 2x256 3200 (winbond)===CPUz Shows it as Melco pc2700 (wtf is melco?)