Multi problems with Dothan + ct-479 on p4c800-e

[k|ngp|n]

LOL...now Im ready to overclock this bit**

[Malachia]

go king, go!!

[k|ngp|n]

go king, go!!

hehe....this kit is a blast Best 1:1 1mpi so far on AIR with the adapter hsf and still using def voltage. This chip is gonna be good for about 2.6ghz out of the box for benching me thinks.


Im cooking up a mounting kit at the moment to put old faithful on the dothan
First DI then hopefully my first Ln2.

Vcore mod for adapter/p4c is next.

[ibby]

:o lol nice

[kristos]

One problem down, one to go

What did the trick?

And how are you mounting that container? I thought the adapter blocked off 2 holes... or... is that not the dothan setup



keep us updated on the Vcore mod

[conrad.maranan]

Okay. So what did you do to finally get it working right?

[Mathias-K]

hehe....this kit is a blast Best 1:1 1mpi so far on AIR with the adapter hsf and still using def voltage. This chip is gonna be good for about 2.6ghz out of the box for benching me thinks.

Most impressive! Makes me want a similar setup even more

[k|ngp|n]

Okay. So what did you do to finally get it working right?

Re-flashed 1021 w/ the latest version of afudos, then reflashed with dothan installed. Dothan is still locked in bios, but not in software. Crystal cpuid works great for changing multis in windows. Setfsb works very well for changing clocks in windows too. To get 1:1, 166fsb set from bios was needed along with auto setting on ram. 200fsb set from bios makes 400 divider become available in dram settings. Overclocking went smooth once it got locked into 1:1.
I wish I had more time to spend with it this weekend
Overall impression is its very fast and feels just like fx55 on desktop. I was able to install win2k3 at 166x15 without a hitch. Nearly 600mhz overclock benching on air with def vcore is nice too.
I have some other p4p boards that clock better here that I want to try it on. Only p4p800se is supported though atm.

[k|ngp|n]

Still going strong on ct-479 alminum heatsink.....Im trying to get into the 26.xx for 1m on air using this asus def hsf for the adapter.
almost got it:

[conrad.maranan]

Man. Dothans just annihilate when it comes to SuperPi. Lookin' good there, k|ngp|n!

[k|ngp|n]

Man. Dothans just annihilate when it comes to SuperPi. Lookin' good there, k|ngp|n!

for sure....If you are into 1mpi (which I shamelessly am), then you can't go wrong with dothan lol... Although I will be 3d'ing it not too long from now w/xtpe and dual cascade . Now that will be interesting.

[conrad.maranan]

We'll be comparing notes shortly, my friend.

[pcboarder]

Did you have to restart you computer after changing mutliplier and stuff

[k|ngp|n]

Did you have to restart you computer after changing mutliplier and stuff

Do it on the fly as you overclock No need to reboot.


nearly 2.7ghz for 1mpi on this craptastic ct-479 aluminum cooler lol.
Cpu wont go much farther than this with def. cooler without getting sketchy.

26.**sec 1mpi would be easy as pie with around 245x11(2695mhz). I can run ram up to 260-270 stable, but not the fsb of the cpu. It walls at 232fsb no matter what multi. I'm hoping some extreme cold will take care of that...it could just be a chip limitation of mine though. I also suspect it may have to do with the way the chip overlclocks in 1:1 depending on how you set fsb in bios.

[Bennah]

Good work there Kingpin on air. Shame about the 232fsb cpu wall

However 27.234s isnt too shaby on air

[kiko]

Do it on the fly as you overclock No need to reboot.


/CUT

king is a philippine chip your 760?

Ciao

[The Stilt]

I can run ram up to 260-270 stable, but not the fsb of the cpu. It walls at 232fsb no matter what multi. I'm hoping some extreme cold will take care of that...it could just be a chip limitation of mine though. I also suspect it may have to do with the way the chip overlclocks in 1:1 depending on how you set fsb in bios.

You have to boot atleast with 200FSB to change NB Strap from 400FSB mode to 533FSB (200FSB boot) or 800FSB (201FSB or higher boot). When system is booted up with less than 200FSB, 400FSB Strap mode is used. With 400FSB Strap your motherboard will max out at ~ 230FSB. When the Strap is changed to 533FSB or 800FSB mode, you board will be able to run 30MHz - 50MHz higher FSB than now.

Unfortunately you can´t do this with 760 chip, without phase or C02/LN2 cooling, since the multiplier can´t be adjusted from the bios. Unless your cpu is able to run at 3GHz (15x200) speeds with air

[pcboarder]

I have the same issue as you but i dont quite understand how you fixed it

[k|ngp|n]

You have to boot atleast with 200FSB to change NB Strap from 400FSB mode to 533FSB (200FSB boot) or 800FSB (201FSB or higher boot). When system is booted up with less than 200FSB, 400FSB Strap mode is used. With 400FSB Strap your motherboard will max out at ~ 230FSB. When the Strap is changed to 533FSB or 800FSB mode, you board will be able to run 30MHz - 50MHz higher FSB than now.

Unfortunately you can´t do this with 760 chip, without phase or C02/LN2 cooling, since the multiplier can´t be adjusted from the bios. Unless your cpu is able to run at 3GHz (15x200) speeds with air

Thanx for the info my man
I suspected that was the case. With DI, 200x15 should be no problem for boot up.

[pcboarder]

you had to get to 200fsb to lock in at a 1:1 in bios right, but did your pc post with those settings i cant get it to go much past 166fsb with out kicking the can(in bios)

[Tony]

I may be able to help here, i think I found a way of forcing the 533 strap on the P4C800e but I have not tested the bios file.

When I modded the p4p800D bios witht he p4p8x boot block the board was running 533 strap by default all the time to force PAT, only issue was none of the dividers on the ram worked and you are forced to run 1:1.

So i then looked at the changes in HEX from the stock P4p800 to the modded bootblock version and was able to apply the changes directly. This may be just what we need.

Im away on holiday so don't PM for the bios...its not here and its not tested but i do now have the CT-479 and will try and get the bootblock modded to 533 by default for us all.

If no joy i will beg Asus again to add the strap option like the IC7 has.

Tony

[The Stilt]

Tony, I think it would be easier to wait Asus to add same multi and vid settings (like P4P800-VM has) to their next P4C800 bios release

The easiest way doesn´t offer you the excitement thou

Keep on working

[k|ngp|n]

I may be able to help here.

Tony

Thanx for your work big toe. Much appreciated.

I cooked up a pretty decent mount for my chilly1 container using the stock p4 bracket and adapter card with hooks and springs....working good so far I think,but need to recheck contact to be 100% sure. I shimed the dothan with some really thin foam tape to cushion the container around the core.
Bios temps were reporting -30c on p4p800se with chip at 1.6v. Does this sound about right for -64 to -66c on container? I guess I'll know for sure when I re-check my contact. It was tricky at first to get the container centered nicely over the core. I still may have not got it dead on.



ROFL! Ghetto NB cooling


I was able to boot into windows at 200x15 with the container on and 1.5v


and here were some 1m runs ......my dumbass knocked the solder joint loose on my vcore mod while it was on .. so only 1.56-1.58vcore under load available. Will re-attach the mod tonight and try to get in some runs(2am).
Cpu would not run faster than 3.16ghz with 1.58v... I'm thinking it was vcore(lack of 1.6+) holding it back.....but it easily could have been poor contact. I did manage to run fsb at 316 which ended up being my best score




LOL...I was able to beat my cascade cooled fx-55 clocked at 278x13 with only 3.16ghz and 253 ram speed. With 1.6-1.7vcore load and better contact maybe... Im thinking low 22's...maybe break into high 21's on DI with high mem + mobo speeds + max ghz. I'll give it a shot before I use ln2.

[macci]

Nice start there with Dice sir!

[leejsmith]

I have a 2nd hand p4p800-vm for use with a ct479 but i dont know what the vid settings in the bios is for i tried searching but so far nothing. I downloaded the manual from asus but it didnt cover the newer version of the bios with the vid settings. Can i use this to increase the vcore.

Nice OC k|ngp|n to answer a question from your first post the bios from the p4p800-se will not work in the p4p800 but the p4p800-vm bios will but as the vm uses intel lan the p4p800 3com gigabit lan will not work and it stopped pci lan cards from working too.

Tony, I think it would be easier to wait Asus to add same multi and vid settings (like P4P800-VM has) to their next P4C800 bios release

The easiest way doesn´t offer you the excitement thou

Keep on working