Dothan @ CT-479 - howto and fixes.

[jrw]

Time to sum up on the CT-479

+ =


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

[BadlyDrawnBoy]

Nice work. I really want to get one of these.

[uclajd]

Great job, thanks for this.

Edit: Here are the specs:

[socrilles]

Could those in the know add things like overclockability of the different boards, and what to expect on air cooling etc....I'm thinking about trying this out, and I have a 1.6 ghz 730 (533 fsb) I'm guessing 800 fsb will be forced for 2.4 ghz (this should be easy though right?) To people then use a program to raise Vore, and then change fsb, and if so is there a working lock on the agp/pci buses? Lastly will I have about the same success on all the boards cuz I would rather go with an el cheapo board.

[leejsmith]

this also works on the p4p800 not se with beta bios 1021.003 from

p4p800 beta 1021.003 bios

the p4p800 has the following bios options

bios 1021.003
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

p4p800-vm has the following settings
bios 1016
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.
ozc ddr booster not happy over 2.65v at 2.8v somthing on the p4p800-vm burnt out and stopped the board from posting.

on both boards the multi and vcore can be changed with cpu msr

cpu msr

both struggle with fsb over 170

u-wire mod info can be found here

dothan cpu vid mod guide

[jrw]

Thank you. All info added

Could someone add some info regards the availabe bios options on the different boards please? With used bios version...

I have a feeling Asus is doing some hard work on bios options and I would like to have the recent additions to bioses represented here

Thank you.

[The Stilt]

Tips:

After flashing P4P800-E bios to P4P800 and P4C800 series boards, you will get 4:5 and 3:4 dividers and adjustable Vcore. Remember also to program the bootblock, because if you dont you have a dead board.

All bios listed in here actually do work.

[jrw]

Added. Thank you.

[Marlowe]

Remember also to program the bootblock, because if you dont you have a dead board.

Could someone explain this in more detail? Looks extremely important to me, and I don't have a clue what it means

[Malachia]

guys do you know if it work a p4p800 bios on a p4p800 DLX?

[Astral7]

Thank you for this thread.
For shim I use a hole punch to cut circles from sheets of foam. You can get the kind with adhesive back and place as many as you want sticky side up on processor then heatsink/base on and you have a nice shim. What is the best bios editor for AMI?

[ex.treme]

Im still looking for information about P4GD1. thx guys

[Kamerat]

Asus P4GD1
- CT-479 support from BIOS 1005
- Change CPU vid = no
- Change CPU vcore = yes
- Change CPU multi = no
- Change FSB = yes
- DDR voltage upto 2.9v
- RAM/FSB: 4/5, 1/1, 3/2 all over (shows the DDR-frequency in BIOS)
- OCZ DDR Booster Works (tested 3,3V-3,4V)
- ClockGen for ICS954119 works: The ClockGen page - Direct link

[uclajd]

guys do you know if it work a p4p800 bios on a p4p800 DLX?

Yeah, I'd like some more info on compatibility of P4P800-DX (non-E).

[jrw]

Everything added.

I'll start condensing questions people need answers to, making it easier for people to contribution.

[leejsmith]

p4p800 and p4p800-dlx are the same bios so the 1021.003 bios will work on the dlx version
the biggest problem with this bios is not being able to change the multi.
I have a 1.6 400fsb 2mb running at 2591 16 x 162 1.586v ddr at 205 2-2-2-5 on air super pi 28s. If i drop the multi down to 15 the max fsb is 172 anything over this with any multi will reset the system.

Yeah, I'd like some more info on compatibility of P4P800-DX (non-E).

[Malachia]

p4p800 and p4p800-dlx are the same bios so the 1021.003 bios will work on the dlx version
the biggest problem with this bios is not being able to change the multi.
I have a 1.6 400fsb 2mb running at 2591 16 x 162 1.586v ddr at 205 2-2-2-5 on air super pi 28s. If i drop the multi down to 15 the max fsb is 172 anything over this with any multi will reset the system.

you have an fsb400, you must try with a fsb533

but multi in win with EIST or other softs work good on p4p800 dlx???

[leejsmith]

i have not used eist but will try it.
cpumsr can change multi and vid in windows. The multi will be 8 up to the max of the cpu and vid will be 0.7 up to 1.38. if you u-wire the cpu to get to 1.568v cpumsr can then lower the vcore but will still display the vcore as 1.38 max.

crystal cpuid can also change vid +multi and lower them when the system is idle.

i am looking on ebay for a 533 fsb dont have the money for a new one at the moment and the 1.6 400fsb only cost £40

you have an fsb400, you must try with a fsb533

but multi in win with EIST or other softs work good on p4p800 dlx???

[uclajd]

Just to confirm, you've actually done this, used the 1021.003 bios on the P4P800-DX (non-e)?

I'd like to be sure before I flash this thing...

Good news if true.

p4p800 and p4p800-dlx are the same bios so the 1021.003 bios will work on the dlx version
the biggest problem with this bios is not being able to change the multi.
I have a 1.6 400fsb 2mb running at 2591 16 x 162 1.586v ddr at 205 2-2-2-5 on air super pi 28s. If i drop the multi down to 15 the max fsb is 172 anything over this with any multi will reset the system.

[leejsmith]

No i have not done this but asus always show p4p800 and p4p800 dlx on the same bios download page

asus p4p800 p4p800 dlx bios

i am 100% sure 1021.003 is for dlx too.

Just to confirm, you've actually done this, used the 1021.003 bios on the P4P800-DX (non-e)?

I'd like to be sure before I flash this thing...

Good news if true.

[Malachia]

i will try, i only whant more infos on what the stilt said...

[uclajd]

i will try, i only whant more infos on what the stilt said...

I'm willing to try this on your board.

And WTH is with this boot block thing?

[GoriLLakoS]

Could someone explain this in more detail? Looks extremely important to me, and I don't have a clue what it means

me too...pls someone explain....

[death metal]

Nice info =)....

Can you guys also mention which board and which CPU gets the highest overclock to date?

[Gautam]

Do you lose PAT or anything else if you flash a P4C800 with a P4P's BIOS? What's the vcore range that you end up getting?

Do these mobos POST with Dothans with the stock BIOS? Or must you have a desktop chip in order to flash them?