Problem with ASUS P4C800 E Deluxe

[V I P E R]

Hello,
I have ASUS P4C800 E Deluxe rev 2.0 and P4 3,0C. I did the droop mod on the mobo and now the vcore is not fluctuating any more, but I can not set anything more than 1,525V in BIOS. If I set more the system resets in a few minutes when I start some CPU loading. I think that the OVP is kicking but I don't know how to disable it. I have a friend with the same mobo and he told me that on his Northwood is the same, but if he puts Prescott or Celeron D this problem does not occur.
Can you help me with some vmod or something else. This thing was not noticeable before the vdroop mod, and I need at least 1,6V, because my CPU is 2x Prime 95 stable 100% load @ 3,9G @ 1,55V in Windows (1,525V in BIOS).
Thank you in advance.

[V I P E R]

Bump!

[comment]

Hello,
I have ASUS P4C800 E Deluxe rev 2.0 and P4 3,0C. I did the droop mod on the mobo and now the vcore is not fluctuating any more, but I can not set anything more than 1,525V in BIOS. If I set more the system resets in a few minutes when I start some CPU loading. I think that the OVP is kicking but I don't know how to disable it. I have a friend with the same mobo and he told me that on his Northwood is the same, but if he puts Prescott or Celeron D this problem does not occur.
Can you help me with some vmod or something else. This thing was not noticeable before the vdroop mod, and I need at least 1,6V, because my CPU is 2x Prime 95 stable 100% load @ 3,9G @ 1,55V in Windows (1,525V in BIOS).
Thank you in advance.Although this thread is not misplaced, you might have more luck getting an answer in the Xtreme Motherboard Vmods' forum rather than here.

Good luck :)

[Jupiler]

You're sure that the Droop mod was done correctly and that it works fine?
Just asking, because I have the same board and a 2.8 NW.

After I did the mod, it worked fine for several months. Until the day I noticed that my system became unstable at the same speeds I was running before.

I uninstalled everything and noticed that one of the wires came loose. Probably happened after I removed the WB from the socket and must have touched the wire.

I redid the mod and it worked fine again.

Right now, after setting default voltage, ASUS Probe reads 1.584.
At 1.60V, VCore should be around 1.664-1.680V and it doesn't fluctuate to much. So it works.

[Blunt]

i had the same problems with my droop mod when one fo the wires came loose but after i removed the other wire it worked fine so you might check you vmod closely

[V I P E R]

The droop mod works perfectly. I'm talking about something else here. I need to remove the OVP.

[V I P E R]

It is possible some of the moderators to move my Thread in the Vmods section of the forum?

Thank you in advance.

[Falkentyne]

What is "OVP"?
.......
And why would it kick in when others aren't having the problem?

[saaya]

over voltage protection.

viper, the problem is not the ovp, its the mod most likely, listen to jupiler and check it again, the ovp does NOT kick in at 1.55v, no way...

if you want you can make a thread about this in the xtreme mods section and post a link to this thread in it. good luck :)

[Jupiler]

I think that the OVP only kicks in above 1.6V, when a Prescott is used.
Fugger had some early issues with his first Prescott on the P4C, where he couldn't go above 1.6V.

Perhaps you can ask this question to Macci, but it sounds strange that the OVP would kick in on a NW.

What's your idle/load Vcore at 1.55V?

[kristos]

how does one notice that the ovp kicks in?

With my 2.8c, I've been up to 1.7V bios without droop and without issues.
with a 2.8a, I've been up to 1.6V bios without droop and serious undervolting.
same 2.8a, 1.6V bios with droop (1.660'ish cpu-z)
seccond 2.8a, upt to 1.6V bios with droop, somehow, psu ran into probs :confused: I noticed because the delta is hooked up to the psu fan lead and it suddenly looses power, spins up again, looses power, spins up again,... enz. shut it down right away offcourse.
same 2.8a, 1.55V bios (1.61* cpu-z) no more psu problems... ran a full prime max heat test without probs.

[V I P E R]

One friend of mine have the exact same problem, and the problem occurs when it is used P4 3,0C. Mine is Sl6WK and it goes to 3,9 at default vcore on air, but I want to use more vcore to up the FSB a little more.
I'll check the droop mod again and I will use various settings for it ... from 25 till 50k and I will see what will happen.

Jupiler - my vcore is 1,57v in idle and 1,55v with load .... it can move to 1,54v but it happens for 1 or 2 seconds in 1 hour.

[XyKo]

Did you buy this mobo recently? I thought they fix all these droop already. I bought mine with ver 1.x and there's no droop or anything. Works perfectly out the box.

[IamAnoobieCheez]

just clock it down a bit. the voltage fluctuation will not be beefy enough to fail your system then. :D


Voltage fluctuation is natural guys. :D You get that with all systems. Asus boards(for example) are not responsible for Vdroop issue(which is natural) when overclocking past what the board is meant to run at. It is up to the user to apply the vdroop mod and make it work. :D

I still haven't applied vdroop mod on my p4c800 because I'm lazy. :D I still get high stable clocks of 4.3ghz for gaming and 8+ hrs of Prime95. What's helping my stability is because i can manage to have CPU temp at dead steady even after all day of gaming.

[Jupiler]

Jupiler - my vcore is 1,57v in idle and 1,55v with load .... it can move to 1,54v but it happens for 1 or 2 seconds in 1 hour.

Looks like the drop mod is working fine then. Otherwise, vcore would jump all over the place.

You're sure the cpu isn't maxed out?
Might sound funny, but maybe your 3.0c simply doesn't like voltages at all.

Can you test it with another cpu?

[masterofpuppets]

just clock it down a bit. the voltage fluctuation will not be beefy enough to fail your system then. :D


Voltage fluctuation is natural guys. :D You get that with all systems. Asus boards(for example) are not responsible for Vdroop issue(which is natural) when overclocking past what the board is meant to run at. It is up to the user to apply the vdroop mod and make it work. :D

I still haven't applied vdroop mod on my p4c800 because I'm lazy. :D I still get high stable clocks of 4.3ghz for gaming and 8+ hrs of Prime95. What's helping my stability is because i can manage to have CPU temp at dead steady even after all day of gaming.

Of course it's natural, but some motherboards do a better job of preventing it. P4C800's are notorious for droop.

[V I P E R]

Looks like the drop mod is working fine then. Otherwise, vcore would jump all over the place.

You're sure the cpu isn't maxed out?
Might sound funny, but maybe your 3.0c simply doesn't like voltages at all.

Can you test it with another cpu?
No, my CPU is not maxed because before the vdroop mod I was able to clock it to 4,2Ghz, but the vcore fluctuation was terrible and I started to worry about the CPU. When I set 1,6V in BIOS, in Windows it fluctuates from 1,58 till 1,72v.

[V I P E R]

Did you buy this mobo recently? I thought they fix all these droop already. I bought mine with ver 1.x and there's no droop or anything. Works perfectly out the box.
Them mobo is brand new ... about 2 months. I've burned my other P4C800 E Deluxe and my supplier replaced me the board with the new rev.2.0 board.