P5B Deluxe Vmods

[pumbertot]

Yes i have 1HP portable air con but still room temp hovers between 24-28C on cool day and 28-37C on hot day with air con on

loop = Swiftech G4 Storm/Thermochill 120.3/MCP650 + Kayl 100W Custom PSU with T-line

The reason - it's the cpu, this X6800 i have runs 15-20C cooler than any core2 cpu i have used at the same volts! all my other E6600/E6700 run 3600mhz at 1.35-1.4v in same room at 60-68C load versus X6800 @3600mhz at 1.4v at 42-48C load!

it could be due to good IHS - notice the corners are lower than the middle!

yeah can see that,hmmm think i will lap the qx6700 might drop temps a bit.
yeah similar setup here with storm, 120.3PA and DDC1(petra top-ek barbs) but no air con. the x6800(sold now) loaded about the same as your other chips.

how hot does your Q6600 get @ 3.6GHz(1.4-1.42V)?

[eva2000]

Q6600 @3600Mhz at 1.45v load done before vdroop mod = prime95 small ffts 4+ hrs loaded at 70/65C for the 2 dies

[pumbertot]

yeah eva get ready for a serious vdroop. I got the resistance to 10k and still get .03V vdroop with kentsfield compared to .01V with X6800.

[funkflix]

yeah eva get ready for a serious vdroop. I got the resistance to 10k and still get .03V vdroop with kentsfield compared to .01V with X6800.

By the way, what happend to ur board now?

[pumbertot]

By the way, what happend to ur board now?

bought a new one. cleaned the other one up and sent off for RMA. fingers crossed they dont take stock NB heatsink off and see I replaced the TIM with ceramique.

[Revage]

Can a pencil vCore mod be done by penciling where hicookie soldered a 50k VR?

[eva2000]

yeah eva get ready for a serious vdroop. I got the resistance to 10k and still get .03V vdroop with kentsfield compared to .01V with X6800.

Swapped in my Q6600 B3 on P5B Deluxe with same vdroop pencil mod at 14.5k ohm.

Before vdroop pencil mod = 3600Mhz at 1.575v bios = 1.4480v load

After vdroop pencil mod = 3600Mhz at 1.45v bios = 1.432v idle and 1.440v load!

Using 1KW OCZ ProXStream psu.

I'm happy for now

[Millyons]

ya with 14.5k i get a 0.01 raise at load on a e6600 / x6800 lol the way it should always be, wonder what even lover resistance would do and what do you guys think how much harder is it on the mosfets and caps with the vdroop mod, could there be any issues with that 24/7....not my first vdroop mod just that these caps are already burning under load and i cant do anything to help cause of the Infinity, you could say my first vdroop with a tower cooler

[zhangmaster12]

i got some pictures of my pencil mod.

[zhangmaster12]

although this mod helped eliminate dvroop a bit, it did not help the fact that when i enter 1.67 something vcore, asus probe only detects it as 1.6. why is this hapening and how do i fix it?

[pumbertot]

you need to do vcore voltmod to get it higher im afraid.

[eva2000]

although this mod helped eliminate dvroop a bit, it did not help the fact that when i enter 1.67 something vcore, asus probe only detects it as 1.6. why is this hapening and how do i fix it?

lower resistance might be needed

[giraffen]

Hey.
I have made the Vdroop mods...Succes
But i have a problem: I will make the Vcore mods, i have try´t one time before without succes and I think the soldered point is distroy so i can not solder it.
The question is:
Is there another soldered point where i can solder it? The ground is okay.

/Jesper

[giraffen]

Here is some results with Vdroop mods;
SuperPi 9*520
peecee.dk/?id=30925
Aquamark 9*500
peecee.dk/?id=30926
I don´t think i can get higher without Vcore mods.

/Jesper

[OMEGA3]

P5B Deluxe, Vfsb mod is here.
For your information.

http://www.xtremesystems.org/forums/...postcount=3595

[funkflix]

P5B Deluxe, Vfsb mod is here.
For your information.

http://www.xtremesystems.org/forums/...postcount=3595

So no FSB improvement, if the CPU is limiting?

Thanks!

[OMEGA3]

So no FSB improvement, if the CPU is limiting?

Thanks!

But not sure...
I think that necessary to verify at about all conditions.

However, it seems to be certain that it changes the FSB limit with each CPU.

[alpha0ne]

Sorry if this has already been answered but I just cant seem to find it ATM

Can someone please tell me what to set the VR's to (is it no resistance at all) before turning on the board for the first time after soldering all the vmods ????


Thanks

[funkflix]

Max. resistance of the VRs.

[Nordling]

Vcore mod P5B-Del worked on Commando? Need ~2,2V

[graysky]

Before vdroop pencil mod = 3600Mhz at 1.575v bios = 1.4480v load

After vdroop pencil mod = 3600Mhz at 1.45v bios = 1.432v idle and 1.440v load!

You got a reference/guide to doing the pencil mod on the P5B-Del?

[davexl]

Holy - Did the pencil mod on my P5B Deluxe with a Q6600 @ 3510Mhz

VDROOP is now VBOOST

Vdroop of 0.072 volts has now turned to a BOOST of 0.048 volts

Before pencil mod:

1.6000V BIOS = 1.552v idle = 201watts, P95 8k load = 1.480v = 359watts

After pencil mod:
1.4625V BIOS = 1.440v idle = 181watts, P95 8k load = 1.488v = 367watts

Passed priming overnight. This is nuts!

Makes me wonder about if I am stable at near idle though...

[GMX]

it's ok, some dfi boards do that "vboost" lol

[davexl]

it's ok, some dfi boards do that "vboost" lol

Lets face it, rubbing a pencil across a resistor... I did not have high hopes!

I would have been happy with reducing vdroop, let alone reversing it.

This is close to ideal behavior is it not? Lower power at idle, juice when you need it...

[VoRtAn_MaDgE]

Can anyone tell me the original value for the vcore mod resistance ?

Talking about the one that has the yellow wire soldered.


And the other next to it's right ?

Thks.