P4P800-E Deluxe Droop Mod

[TyphooN]

Does anyone know how to do this mod? I just got a P4P800-E Deluxe, and do not have my P4P800 Deluxe anymore, I had to RMA the board and this is what they sent me back. I just finished installed my watercooling and the temperatures are great, but I cannot even reach 3.5ghz stable like I could on air, because I do not have a droop mod anymore. I did the 3.3v -> vdimm mod fine on the board. I searched the forum and could not find an answer, just people wondering the same as me. Does anyone have an idea of how to do this? I can scan my board if that could help possibly.

[Hell-Fire]

Originally posted by TyphooN
Does anyone know how to do this mod? I just got a P4P800-E Deluxe, and do not have my P4P800 Deluxe anymore, I had to RMA the board and this is what they sent me back. I just finished installed my watercooling and the temperatures are great, but I cannot even reach 3.5ghz stable like I could on air, because I do not have a droop mod anymore. I did the 3.3v -> vdimm mod fine on the board. I searched the forum and could not find an answer, just people wondering the same as me. Does anyone have an idea of how to do this? I can scan my board if that could help possibly.

As long as they havent changed the controller (ADP3180), this is how the mod should be done. Thats a 50K VR set to 28K ohms.

[TyphooN]

What do u mean? Solder where those old points would be? The resistor arrangement around the controller is totally different. I still have the 100k vr set to 28k that i used before. Even if the arrangement of the resistors is different just solder to those locations???

[Hell-Fire]

Post a picture of the area around the ADP controller.

[TyphooN]

Alright, I will post one when I can borrow a digicam.

[mion]

oops

[TyphooN]

mion.. what kind of a post was that? lol

[TyphooN]

I just took these pictures, My whitewater was still mounted, If these pictures do not cover enough then I can unmount it and take pictures again.

http://home.comcast.net/~typhoon007/p1.jpg
http://home.comcast.net/~typhoon007/p2.jpg

[Hell-Fire]

Originally posted by TyphooN
Sorry about that if someone has looked at the thread and couldn't see the images, the file extentions had capital letters so the links did not work, they are fine now.

On the ADP3180, the Vdroop is controlled via pins #17 (CSSUM) and #18 (CSCOMP).

It was hard to tell exactlly where the traces coming from these pins were going due to the thick white line present, but do a connectivity test between between those pins and the capacitor I pointed out. If they are connected to each end of that capacitor, then you can solder your VR to the ends of the capacitor, or to the solder pads behind it as they are also connected to it.

[Del]

Originally posted by TyphooN
Alright, I'll do a connectivity test when i get back from church this afternoon. Did you see my post about my X800? It is in the graphics vmods section.. If you can reply to it that would be great. Thank you for your help.

TyphooN, did this mod work out for you mate?

[TyphooN]

I did the conductivity test. It seemed to have worked out. I haven't done the mod yet. I am probably not going to do the mod until I get my x800 back this week. After that conductivity test I would say it would work and go for it. I will be trying it later this week.

Good Luck if you decide to do it

[CaTalyst.X]

Let us know how it goes, gj HF!

-CaT

[Del]

It works! Theres still a tiny droop but nothing like before.

Before: idle 1.62v load: 1.55v
After: idle 1.63 load: 1.60 - 1.62v

[Hell-Fire]

Originally posted by CaTalyst.X
Let us know how it goes, gj HF!

-CaT

Thx CaT.

Originally posted by Del
It works! Theres still a tiny droop but nothing like before.

Before: idle 1.62v load: 1.55v
After: idle 1.63 load: 1.60 - 1.62v

Nice to see it worked out.

You can always try adjusting the VR to see if you can get a little less droop.

[Del]

Na, I used fixed resistors. But still I'm pretty happy, allows me to up my clock from 3570 to 3640 One strange thing though, my vdimm seems to fluctuate a little more now from around 3.10v idle to around 3.06v but i've seen the voltage as high as 3.12v and as low as 3.02v according to the monitor in windows. I've check with a multimeter and it seems solid at 3.15v idle and load but I've not monitored it for long. Why is it that in windows it fluctuates so much? (Although it wasn't this bad prior to the mod).

Anyway Thanks Hell-Fire for showing us how it's done

[Hell-Fire]

Originally posted by Del
Na, I used fixed resistors. But still I'm pretty happy, allows me to up my clock from 3570 to 3640 One strange thing though, my vdimm seems to fluctuate a little more now from around 3.10v idle to around 3.06v but i've seen the voltage as high as 3.12v and as low as 3.02v according to the monitor in windows. I've check with a multimeter and it seems solid at 3.15v idle and load but I've not monitored it for long. Why is it that in windows it fluctuates so much? (Although it wasn't this bad prior to the mod).

Anyway Thanks Hell-Fire for showing us how it's done

Was my pleasure bro.

I would ignore what a monitor is telling me and trust the DMM read.

[TyphooN]

Good Job Del. Thanks Hell-Fire for figuring out this mod. Del, it is normal for it to slightly droop, I don't think its possible to have exactly no droop. Enjoy your motherboard now :0, can u get some pics for us?

[TyphooN]

Del, I was also wondering, which spots did you use? I was thinking I will be soldering to the pads, it looks easier.

[Del]

No pictures unfortunately, I've lent my camera to a friend who went on holiday. Hopefully I will be getting my hands on another before the weekend.

I soldered to the pads

[TyphooN]

Thanks. I will be doing the mod today ;D.

[Del]

Good luck matey

[CaTalyst.X]

Cool let us know how it goes

-CaT

[TyphooN]

I did this mod, now my comp doesn't start up. I really don't think it was because of the mod. My comp was not posting before the mod, I thought it was because of the video card. I think my CPU must be broken or something =/. When I turn my computer on, without a vga card, it never screams that vga test failed, when I have no memory in it says mem test failed, with the 12v connector disconnected it just says cpu test failed. But with everything in it just sits there not posting =/. Does anyone have any clue what could be wrong? I am probably going to go test my stuff in a friends computer.

[Del]

I did find on my first boot it didn't post, but I reset the bios and it was fine. Remember the concern I had with the fluctuating vdimm? It seems after the mod my board no longer runs with as tight memory timings. I've had to set RAS to CAS Delay to 4 when I used to have it at 3. Other than that everythings fine, and the board is much more stable

[Del]

Got my grubby mitts on a digital camera today heres a shot of the vdroop I did. Sorry for the obscured angle but thats the best I can do without removing my heatsink



Heres the vdimm if anyones interested in that. 15k resistor gives me spot on 3.2v at 1.85 in bios.