Dothan @ CT-479 - howto and fixes.

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Time to sum up on the CT-479

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Dothan 1M results
- 23sec by Eel - Dothan 750 @ P4C800-E Deluxe, modded Mach II
- 23sec by Kamerat - Dothan 730 @ P4GDI, MachII
- 24sec by Eel - Dothan 750 @ P4C800-E Deluxe, MachII
- 24sec by charlie - Dothan 750 @ P4C800E Deluxe, chilly1
- 24sec by gclg2000 - Dothan 730 @ P4C800E, air
- 25sec by leejsmith - Dothan 730 @ P4C800 Gold, air
- 25sec by uclajd - Dothan 760 @ ?, stock Vapo
- 26sec by Schnubbi - Dothan 760 @ P4P800SE, air
- 26sec by Gautam - Dothan 730 @ P4C800-E Deluxe, air
- 26sec by stryg - Dothan 730 @ P4C800-E Deluxe, all air
- 26sec by mrlobber - 740 @ P4GD1
- 27sec by pcboarder - Dothan 730 @ P4C800E Deluxe, air
- 27sec by Peteri - Dothan 730 @ P4C800-E Deluxe, air
- 28sec by Icy - Dothan 740 @ P4C800 Deluxe, air
- 29sec by Unseen - Dothan 750 @ P4C800-E Deluxe, air


Dothan 3DMark01 results
- 38014 by Eel - Dothan 750 @ P4C800-E Deluxe, modded Mach II
- 36004 by Kamerat - Dothan 730 @ P4GDI, MachII
- 31233 by gclg2000 - Dothan 730 @ P4C800E, X800Pro, air
- 29692 by leejsmith - Dothan 730 @ P4C800 Gold, 6800GT, air
- 28008 by uclajd - Dothan 755 @ ?, stock 6800GT
- 27235 by stryg - Dothan 730 @ P4C800-E Deluxe, 9800Pro, all air

Keep 'em coming and remember info on CPU, board, bios, OC-procedure, vcore, vdimm, mods, cooling (tricks), etc...


CT-479 FAN
70mm, 3000rpm, 32.5CFM, ~30db


Officially supported boards - and needed BIOSes
P4P800 SE (Atleast BIOS 1008)
P4P800-VM (Atleast BIOS 1016)
P4C800-E Deluxe (Atleast BIOS 1021)
P4GD1 (Atleast BIOS 1005)
P4GPL-X (Atleast BIOS 0205)


Other non-official supported boards
P4P800 / P4P800-Deluxe (beta bios 1021.003)
P4C800


Grab your BIOS here
- Newest regular and beta BIOSes available here


Tips
- Sonoma Dothans (with 533FSB, name: 7x0) clocks radically better than the old Dothans with 400FSB (7x5)
- Needs to be booted at 200+FSB for AGP/PCI lock (=higher clocks).
- Booster works with the CT-479 (confirmed on P4P800 -> 3.5, P4P800SE -> 3.6)
- Dothan tricky vcore u-wire mod
- Dothan easy vcore u-wire mod (1.55vcore)
- Best chips available are IMO (Stilt) the 730 and 750 models (good multi´s to boot with 200+FSB)
- P4P800 and P4P800-Deluxe use the same bios; so the 1021.003 works for both boards.
- Basically every P4C800 BIOS (-E, DLX etc) works in every P4C800 board without bootblock "trick".
- If your Dothan clocks particularly bad, try stepping up through clockgen in 200-300MHz steps max. Helps for some...
- Take care when flashing with non-matching bios! (Bootblock needs to be flashed as well, see below)


Tools
- EIST - Multi and vcore changes - work on: P4P800SE, P4C800-E
- Clockgen for the boards - FSB adjustments - work on: all boards except P4GD1
- CPUMSR - Multi and vcore adjustments - work on: P4P800, P4P800-VM, P4C800-E
- CrystalCPUID - multi adjustments - work on: P4C800-E
- 865/875 tweaker - memory timings on the fly
- systool - multi, fsb, mem and lots of other cool stuff


P4C800
- Newest beta bios allows Multiplier and Voltage options.


P4P800SE
- Vcore -> 1.6
- DDR voltage upto 2.85
- AGP -> 1.8v
- OCZ Booster works, 3.6vdimm
- If booted at 200+ FSB ratios 266, 333, 400, 500 become available
- Vcore and multipliers available in beta bios 1009.003


P4C800
- Kyosen vdimm mod
- Other vdimm mod
- Vcore mod
- P4C800 E Deluxe rev. 2.00 Vcore mod, Vdrop mod, Vmem
- Flashing to P4P800-E bios gives 4:5 and 3:4 dividers along adjustable vcore


P4C800-E
- CPUMSR works (might be needed to disable 'user protection' or whatever its called in program settings)
- EIST works
- Crystal CPUID works


P4P800
- Change cpu vid = no
- Change cpu vcore = no
- Change cpu multi = no
- Change fsb = yes
- DDR voltage upto 2.8v
- At 100fsb ram = ddr 266
- At 133 and above ram = ddr 266 and 333
- At 133fsb only memory turbo for 3:4 settings but with turbo on no pci lock.
- OCZ DDR Booster ok so far upto 3.5v
- Difficult to get above 170FSB
- Flashing to P4P800-E bios gives 4:5 and 3:4 dividers along adjustable vcore


P4P800-VM
- Change CPU Vid = Yes
- Change CPU Vcore = No
- Change CPU Multi = Yes
- Change fsb = No
- DDR voltage upto 2.65v
- At 100FSB ram = DDR 266
- At 133FSB (jumpers on ct-479) DDR=266 and 333
- PCI/AGP is locked.
- OCZ DDR Booster not happy over 2.65v at 2.8v somthing on the p4p800-vm burnt out and stopped the board from posting.
- Difficult to get above 170FSB


P4GD1
- The Asus P4GD1/CT-497 experience by kamerat
- Change CPU Vid = No
- Change CPU Vcore = Yes
- Change CPU Multi = No
- Change FSB = Yes
- DDR voltage upto 2.9v
- FSB/DRAM - 4:5, 1:1, 3:2 all over (shows the DDR-frequency in BIOS)
- OCZ DDR Booster Works (tested 3,3V-3,4V)
- Clockgen works
- Two helpful threads - 1 2


Bootblock flashing
- New versions of Afudos can´t flash the bios in if the ROMID´s are different (ex. P4C800 & P4P800-E). Thats why you must use old Afudos version that allows flashing rom´s with different ID´s (get it here). The only problem is that the older v1.16b version dont flash the bootblock automatically unlike the new versions, so you must flash the bios in with following command "afudos /iromname.rom /n /pbnc". If you don't use the following command, your board won't post after the update.


Mounting alternative cooling solutions
- Dimensions of the CT-479
- Shim needed to protect core
- Core-height above silicon(?)
- Dothan dimensions here
- Mounting Zalman CNPS7000 on CT-479 - here and here
- Mounting Zalman CNPS7700 on CT-479 - here and here
- P4 IHS mounting on Dothan chip here


Various tests of the CT-479
- PC Perspective - P4P800-SE
- x86-secret - P4C800-E
- hardware.fr - all boards except VM
- Legitreviews - P4P800SE
- Presence-PC - P4P800SE
- GamePC.com - P4P800SE