Asus P5P800 Voltage Mods

[Verdict]

here is the pictures :

pienari do nice work with those mods, thx for him



Vmods

i drive some tests with those mods and it works fine,
but now i need know how we can do VTT mod, that maybe
helps with fsb.

1.4v 5150mhz, 303fsb, 5:4,
Superpi 8m 4:43

[bh2k]

Doesn't vtt track right on asus boards? Excellent mods too

[hammer]

What cooling is this? 5G??

[macg]

what's the resistor value for the droop mod??

[Salkcin]

I must ask... I can see you spent some time figuring out how to make the AGP voltage mod. What is this good for? high FSB? higher AGP frequency or what?

Another thing. Have you had any problems with P5P800 detecting frequencys wrong at post and in bios when going at FSB's beyond 250MHz? The FSB seems unstable to when exceeding the speed of 250MHz... open CPU-Z and it would detect 255-260-265-268-269-270MHz... just an example.

[CarNabY]

I need help for vdroop mod.In the photo of Verdict I do not see well.
I have need of confirmation before the mod



And still...what's the resistor value for the droop mod ?
Thx all

[bh2k]

If the resistance there is the same as it is on the P4C800 then you need 28k ohms of resistance.

[CarNabY]

Thx bh2k,.. now I have only need of knowing if the points in red are exact for the vdroop

[Hell-Fire]

Thx bh2k,.. now I have only need of knowing if the points in red are exact for the vdroop

Without having the board, I have no idea if thats the correct locations or not.

But, what you do need to know is that the pins that control the Droop are #17 and #18. You can solder the VR to anything connected to both pins. But make sure that what you solder to is connected to BOTH pins and not just one.

I am pretty sure that the capacitor ends in green are connected to #17 and #18, but stilll cant tell. Best to do a connectivity test if you cant follow the traces from the pins.

I marked the pins in green in the pic.

[CarNabY]

Thx Hell-Fire

Mmmm I cannot directly solder the resistance to pin 17 and 18?

[Hell-Fire]

Sure ya can bud...just most people dont because they are scared of bridging the pins together, or other pins, and causing a short circuit.

[macg]

im with carnaby. really not sure where those wires are connected to...

[CarNabY]

Sure ya can bud...just most people dont because they are scared of bridging the pins together, or other pins, and causing a short circuit.

Ok Hell-Fire..no problem
Thx for y help

[CarNabY]

im with carnaby. really not sure where those wires are connected to...

Pin 17 and pin18 with trimmer fixed 28k
Bye

[Hell-Fire]

Just to be on the safe side....can you give me a resistance check between those 2 pins so I can make comparison between your findings and the resistance on a P4C that I have here/

[Salkcin]

Now I see your active... could you answer my question please?

Another thing. Have you had any problems with P5P800 detecting frequencys wrong at post and in bios when going at FSB's beyond 250MHz? The FSB seems unstable to when exceeding the speed of 250MHz... open CPU-Z and it would detect 255-260-265-268-269-270MHz... just an example.

Did any of you experience any wierd things with the FSB at all?

[Hell-Fire]

That could stem from all kinds of problems, or glitches.

That could be a simple bios glitch, a chipset problem,...things like that.

I have never modded, nor owned a P5P board, so I am not familiar with it all as far as how it clocks and things like that.

I have encountered things like this on other boards, and typically a bios changed fixed the improper readings.

[Salkcin]

It's not only me that have the problem, but I would like to know if ALL boards are like this or only some...

Take a look at this galleri. Stop when you had enough (not my pictures, but another one with the same problems)
http://www.overclockers.at/attachmen...chmentid=61793

[Hell-Fire]

It could simply be that the board is not engineered properly, or they are using capacitors that have a ton of leakage.

The board could simply be substandard.

[CarNabY]

Ops!! other problems
Oczbooster with this P5P? The connection in OCZBooster in cable 20Pin..and P5P is 24Pin!!

[macg]

Pin 17 and pin18 with trimmer fixed 28k
Bye

thanks mate!
now if a vdimm mod could be done for this board...

[Hell-Fire]

thanks mate!
now if a vdimm mod could be done for this board...

Verdict has a posted pic of the Vio = Vdimm mod, but for the standard Vdimm mod using a trimmer, I need a pic to go by gents.

[CarNabY]

P5P+560 Stock cooling and vcore default PAT Disable
http://www.ocpassion.com/CarNabY/Asus775/Screen11.GIF
http://www.ocpassion.com/CarNabY/Asus775/Screen04.GIF
The voltage in cpuz not real..bug

P5P+560 Stock cooling and vcore +0.050v
http://www.ocpassion.com/CarNabY/Asus775/Screen05.GIF
http://www.ocpassion.com/CarNabY/Asus775/Screen10.GIF
Maybe with BH5 2-5-2-2 30 sec?


New test Water cooling
With BH5 and OCZBooster. P5P800 No mod Water cooling(water +20°) the maximum frequency that I have closed superpi is:
http://www.ocpassion.com/CarNabY/P4/wbvcored.GIF

And with +0,050Vcore :
http://www.ocpassion.com/CarNabY/P4/Superpi29.GIF



Now i need Vdroop

THX Hell-Fire and Macci for Help

[CarNabY]

VDroop ok :banana4:

Now i have 3DMark under test with 4300Mhz..vcore 1.45v and Water +20°

[macg]

guys,

is there any other way to do the droop mod? i mean, am i limited to soldering the trimmer between pin 17 and 18? or could i solder to some other area or component/s?