Asus P5KC first look

[over@locker886]

http://www.xtremesystems.org/forums/...d.php?t=151968

Deja vu?

ASUS needs to get their act together!!

Yes, deja vu..

Tomorrow, I will talk with one person from Asus Hungary and tell these problems.

[Eldonko]

35712, a 50k VR is just a variable resistor with 50k resistance. Basically you solder it between the two points marked and adjust until vdroop is gone. But if you are new at that type of thing it is probably best go with cadaveca'a advice and do the pencil mod.

[Achill3uS]

Thanks for sharing the vdroop and vcore mods Achill3uS, Ive been trying to figure those out. I added your mods to my photo so its a lil more clear.



Do you know vdimm or mch?

welcome and thx to added your photo.
I know the vdimm too just need to test it, vmch I dont need but maybe could show you where could be find.

http://www.xtremesystems.org/forums/...d.php?t=151968

Deja vu?

ASUS needs to get their act together!!

yeah
and I've measured the temperature of the heatsink on the fet's, on P95 smallFFT after 5 min it was at the feet 59°C WITH a 9.2mm 2900rpm fan cooled!

[35712]

For you, best is to pencil mod. just "colour" the resistor indicated from end-to-end with a 2B pencil.

Like this? Is the thickness of the line important?



And what do you gus think of this statement concerning the vdroop?

http://support.asus.com/faq/faq.aspx...Language=en-us

[Eldonko]

701 is working well for you guys? Seems my stability is shot since I flashed..

[Achill3uS]

701 is working well for you guys? Seems my stability is shot since I flashed..

Yes, I use 701 for a long time, and its quite good, don't feel difference after 414 or 402 or what was that

[Eldonko]

Yes, I use 701 for a long time, and its quite good, don't feel difference after 414 or 402 or what was that

Dam, that is weird, I cant mem freq at all, it has to stay on auto or I cant even boot to windows. I can inc fsb and change mem timings, but I have to use whatever DRAM Freq the board sets for me. :/

[Achill3uS]

Dam, that is weird, I cant mem freq at all, it has to stay on auto or I cant even boot to windows. I can inc fsb and change mem timings, but I have to use whatever DRAM Freq the board sets for me. :/

hmm, try it on the black slots, I have in yellow slots problem with DRAM Freq too, It goes stable only at 1:1, but dont remember wich bios do this, long time no use that dimm's

[Achill3uS]

Yesterday I've tested a bit the mobo with my QX6700 on DryIce
(DI temp was around -50C, not soo good quality )
But in couple weeks I will test it with LN2 on an overclocking show here in hungary

photos:





max valid with 4 cores at 4600mhz

SPI 1M @ 4585mhz 11*416 1:1 4-4-4-4-4-25-4-4-4 2T
and only realtime tweak with daily used XP
11.171s

so more tests coming, warm up done
regards

[Eldonko]

hmm, try it on the black slots, I have in yellow slots problem with DRAM Freq too, It goes stable only at 1:1, but dont remember wich bios do this, long time no use that dimm's

Tried black and yellow slots, but still no luck with anything but 1:1. I can boot @ 1:1 or sometimes on auto it boots at 5:6, but if I was to select 5:6 manually, no boot. Need a way to backwards flash to see if an older BIOS works...

[Achill3uS]

Tried black and yellow slots, but still no luck with anything but 1:1. I can boot @ 1:1 or sometimes on auto it boots at 5:6, but if I was to select 5:6 manually, no boot. Need a way to backwards flash to see if an older BIOS works...

hmm interesting.. AsusUpdate could backward flash, or I like EZ Flash
But if with older bios don't would better, go rma

[Eldonko]

Ill see if I can a beta BIOS out of ASUS, otherwise I'll have to.

[Eldonko]

So I called ASUS today and they tell me that only Kingston DDR2 mem is supported by the board lol. So apparently because my D9GMH is Mushkin and Crucial and not Kingston I'm SOL for support.. They dont even know how to say the different types of chips properly, ie qimonda, elpida and they base their support on manufacturers instead of particular chips. Ridiculous.

[Achill3uS]

So I called ASUS today and they tell me that only Kingston DDR2 mem is supported by the board lol. So apparently because my D9GMH is Mushkin and Crucial and not Kingston I'm SOL for support.. They dont even know how to say the different types of chips properly, ie qimonda, elpida and they base their support on manufacturers instead of particular chips. Ridiculous.

LOL
So have you tryd some older bios or other memory's too?

something else..
I'm working now to find the pll mod, if somebody know that, don't take as a secret

[freakBYnature]

Yesterday I've tested a bit the mobo with my QX6700 on DryIce
(DI temp was around -50C, not soo good quality )
But in couple weeks I will test it with LN2 on an overclocking show here in hungary

photos:





max valid with 4 cores at 4600mhz

SPI 1M @ 4585mhz 11*416 1:1 4-4-4-4-4-25-4-4-4 2T
and only realtime tweak with daily used XP
11.171s

so more tests coming, warm up done
regards

Nice work

[Potato Salad]

I'm only at 2.7GHz for the moment..
There are so many bios settings for this board, has someone posted a thread with reguards to what they all do..
What do i need to diasble in bios to get more stable oc?
C1E??
what else?
You can see stuff in my sig..

[Achill3uS]

I'm only at 2.7GHz for the moment..
There are so many bios settings for this board, has someone posted a thread with reguards to what they all do..
What do i need to diasble in bios to get more stable oc?
C1E??
what else?
You can see stuff in my sig..

in CPU settings, you could everything to set disabled, only CPU multipiler not.
btw try to follow my guide, I think It could be useful
P5K OC Guide

Nice work

thank you very much

[Eldonko]

Here is a pretty good guide to getting started as well.

[Eldonko]

Ok so with the help of Brian @ Mushkin and Jimmy @ ASUS we got the divider issue sorted, whoo hoo!

First off, forget using auto on any RAM secondaries when changing DRAM freq. BIOS sets them too tight and you get no boot. So disable DRAM Static Read control and set secondaries as follows:

TWR: 5
TRFC: 42
TWTR: 11
TRRD: 3
TRTP: 5

5:6 and 4:5 dividers now confirmed to be fine! My issue was static read had to be disabled and twr was too tight. Now that I have this thing working properly I can do the mods.

EDIT: H20 FSB test, 510, shooting for more sub zero.

[Potato Salad]

Ok thanks..
I'll check it out later

in CPU settings, you could everything to set disabled, only CPU multipiler not.
btw try to follow my guide, I think It could be useful
P5K OC Guide



thank you very much

[Eldonko]

Vcore and vdroop volt mods done. Mods work perfectly, vdroop when from 0.13v to 0v. Vcore adjustable to whatever I see fit.

Mounted the trimmers to some pcb and glued down for easy access:



The mods:



Droop = 0v! 1.50v BIOS = 1.50v idle, 1.50v load, Real vcore = 1.49v steady.



Special thanks to Achill3uS! Now if ya got a mch or dimm mod that would be awesome. How does a mod work when voltages for DDR2 and DDR3 are different, is it the same mod just DDR3 gets .3v less?

[Eldonko]

Tiny droop now.

[Achill3uS]

haha very nice work Eldonko, I like it
but if you would upgrade to a Quadcore cpu, I think those bga coolers wouldn't cool enough the fet's.. they are crazy hot under p95 to me

[Eldonko]

Yeah, I know what you mean. Last night I measured those fets with fluke and they hit 75-80C orthos loaded! Tonight I am going to add a 120mm directly over that area, should help a lot. I'm pretty sure that is why your cap exploded, that is the hottest area of the board, right at the base of that cap.

[35712]

A guy in the hardwareluxx (germany) forum tried to do the pencil mod with a conductive pencil. It was not a 2B as far as I know. And he reported, that the vdroop would not have gone at all.

Is the usage of a 2B pencil that important, so that his line does not do him any favor?