Greetings Everyone,
Current mobo:Asus P4C 800 Deluxe . Current CPU:Intel P4 2.8C 800fsb (northwood), 478 socket. Mobo manual states 3.2mhz is the highest cpu you can have in this mobo. Does anyone know for certain what the highest mhz & fastest P4 cpu w/800fsb can be installed with this mobo ???

Thank You,
Sincerely, I am,
The G-MAN

Intel P4 2.8C 800 fsb W/Zalman CNPS7000A-ALCU cooler & Artic Silver 5
ASUS P4C800 Deluxe mobo
Twin Corsair 512mb XMS Platinum RAM @ 3-3-3-8
Windows XP
ATI X850 PRO 256mb w/Artic Cooling 5 rev.2 cooler & Artic Silver 5
Twin 80gb WD/HDD @ RAID 0
Vantec 420 volt PSU w/3-fans
Asus CD ROM - Liteon DVD-RW- Floppy -ZIP drive
Lian Li 6010 aluminum case w/extra cooling
Temps:
MOBO:30 degrees C/86F
CPU :28 degreesC/80F
GPU :34C/36C @ idle

Max you can install is P4 3.4C(Northwood),3.4E(Prescott),3.4EE.(Gallatin). GL

The hand manual might be out of date.

You can find CPU support on Asus site:

CPU Support

Looks like it will accept 3.4ghz (Prescott) CPU:

P4C800 Deluxe

P4-3.20 GHz (800 FSB, L2 cache:512KB, HT, D1)

P4-3.20 GHz Extreme Ed. (800 FSB, HT)

P4-3.20E GHz (800 FSB, L2 cache:1MB, HT, 90nm)

P4-3.40 GHz (800 FSB, L2 cache:1MB, rev.G1)

P4-3.40 GHz (800 FSB, L2 cache:512KB, HT, D1)

P4-3.40 GHz Extreme Ed. (Socket478, 800 FSB, HT)

P4-3.40E GHz (800 FSB, L2 cache:1MB, HT, 90nm)

P4-3E GHz (800 FSB, L2 cache:1MB, HT, 90nm)

Also may want to check the latest bios.

Edit: gah.. tanker beat me to it.