I did the mod too.
Before (1,45V in bios):
1,387V orthos-> 1,373V
After:
1,412V orthos-> 1,411V
Printable View
I did the mod too.
Before (1,45V in bios):
1,387V orthos-> 1,373V
After:
1,412V orthos-> 1,411V
Alright, I decided to rub the hell out of that little thing with my pencil.
I'm getting no vdroop reported by asusprobe. Vcore stays at 1.51 all the time :cool:
Nice, what have you set in bios?Quote:
Originally Posted by couppi
HI GUYS,
i have a question: safe range for vmch?
I measured vmch after mod with multimeter: 1,79volt real -> 1.65volt bios
how can i reach over 500 fsb?
sry for bad english
thx cya all
welcome to XS :D Can you not hit 500FSB at that voltage? for much higher voltages, i`d suggest improving the cooling on the chipset :)
Kenny
Yea, my first tought too. I managed 505 with cold air, with normal air temp I can't get over ~495 with any vmch/vfsb.Quote:
Originally Posted by K404
1.5375 or something like that. The mod sort of fixes the board's undervolting, but not that much.Quote:
Originally Posted by ManagHead
lol, magic forum :D
thx for fast answer :)
without vmod i get ~500....with mod vcpu, vdroop, vmch and vddr i get ~500 too :( ----> 505 black screen :( :(
i have liquid cooling on cpu, northbridge and vga ;)
can i reach 500+ increasing again vmch or i break my mobo?
Thx, thx, thx!!
E6600
Team Group Xtreem DDR2 800 3-3-3-8
P5B dlx
other voltages? other settings? you don't give much info , you might have something else you can tweak.
Thats a bit weird :confused: What BIOS you running? water on the chipset should definately get you past 505, tho from what i`ve read here, board performance ranges wildly from user to user?Quote:
Originally Posted by giovysax
i think it is your cpu that limitedQuote:
Originally Posted by giovysax
Well....
1° config:
BIOS: 0804 ufficial
CPU: E6600@3,5GHz 1,55volt 500x7;
Vmch: 1,78volt (bios 1,65volt);
RAM: 1000MHZ 5-5-5-15 1:1 2.45Volt (bios 2.35volt)
If i set 500+ black screen :(
Actualy i use this config:
BIOS: 0804 ufficial
CPU: E6600@3,84GHz 1,55volt 480x8;
Vmch: 1,78volt (bios 1,65volt);
RAM: 960MHZ 4-4-4-10 1:1 2.4Volt (bios 2.3volt)
thx for help xD
cya all
well,
after various test i inderstand that my limit in overclock is SoutBridge Vcore!!!!
If i set it at 1,8Volt i can reach 500MHz fsb stable with vmch=1,55V, vcore 1,50volt, vddr=2,35volt!! (orthos run for 7+ hours)v :woot:
If i set it at 1.7 is not stable for me.
With sb vcore 1,8volt i can boot at 510 but is not stable with orthos :(
any southbridge vmod??? :stick: :stick:
thx for help!!
(Merry Xmas and Happy New Year!!!! :D :D :D :D :D :D :D :D :D )
Interesting, I'll try this myself. Time to put watercooling on sb, and tec on nb? :D
I was able to pass 500FSB without cold air with southbridge 1,8V! Haven't tested anything else than Pi 1m. Nice find!
Thanks for the info..Quote:
Originally Posted by couppi
Just checked mine. Set at 1.525(in the bios) reads 1.48 with programs. Load it drops a little, to 1.464.
Do I need the vdroop mod?
Did the pencil trick. It took more than a couple of times for it to stick.
Before I'd set 1.50 in the bios, I'd get 1.456.
Now, 1.5 I get 1.48.
Before 1.480 idle, 1.464 load.
Now, 1.480 idle, 1.472 load.
Not that much difference.
Maybe tomorrow I'll crack open the conductive ink.
what mods can you use conductive inc for?Quote:
Originally Posted by OnDborder
Have to try that pencil mod. SB voltage does help for a few more FSB mhz. A good cpu as wel :D Me first one did 505 orthos, 510 dual 32M but bsod at 512 or higher... Second one does 550 stable on air and max about 570 1M with mach. Same board/mem/bios/settings.
I think no mod can be done in the P5B with conductive ink.Quote:
Originally Posted by Nosfer@tu
Instead of using the pencil, thinking about using the ink instead, on this vdroop. It's more reliable.
It's not the same thing ! be carefull !!! :nono:
The pencil reduces de resistance a little bit. The conductive ink reduces the resistance to 0 ! If you do that it could fry your CPU :D
Ok, I'm just a little confused. Help me out, please.
When using pencil lead aren't you connecting the 2 posts, by passing the resistor? So you can "control" the amount of resistance with the amount of pencil lead applied? A little lead, little resistance, rubbing the heck out of it, alot of resistance?
I thought either the current bypassed or it doesn't.
Maybe that explains the different readings. Like I stated, it took a few times to get a stable vcore. One reading would be 1.509 then fluctuate to1.49. Another try it read 1.3 when set to 1.5, maybe too much pencil?
Now it's pretty much stable at 1.48/set at 1.5.
I guess I got lucky and used the right amount of lead.:)
i don't boot with fsb 510+ :(Quote:
Originally Posted by loc.o
help me? :stick:
cya all
You should just use a trimpot, its alot safer. :)
Lol, you haven't seen me solder.
I'll probably just leave it. It's nice and stable. No fluctations.
Anyone know if there's possible to use 10kvr for the vMCH mod?
Why am I still not understanding how to do this pencil mod? Am I retarded? I cant see where to do it. Can someone please help me.
Here's a close-up. http://www.xtremesystems.org/forums/...15&postcount=5
Here's another, further away. http://www.xtremesystems.org/forums/...2&postcount=26
You "pencil" in between the 2 ends of that tiny resistor. The lead conducts the current past the resistor.
Just completed the Vmods and they all work great. I found that roughly 20k will raise vcore by .6v so the mod can be done with a 20k vr. Just be sure to set your vcore in bios down by at least .5~.6 below where you usually run at.
Yes you can. It will raise the voltage roughly .5~.6 so 1.45 bios at 10k will give you roughly 1.5Quote:
Originally Posted by ManagHead
Do you mean it will raise 0.05? If I have 1,45V in Bios, and it raises 0.5V, it will become 1,95V?Quote:
Originally Posted by Quest For Speed
Sorry, I meant .05. I currently have my VR set at 10k and bios set to 1.55 and my multimeter is reading 1.606.Quote:
Originally Posted by ManagHead
???:confused: if p5b de=p5b dh de=p5b=p5wdh=all ws proQuote:
Originally Posted by Onepagebook
hmm i can do the all mods of all mobos in p5w64 ws pro:cool: or some mobo else?
sorry for the english:(
Is there eny program to see mem voltages after Vmem mod, or I must do it vith my bear hands and votmeter
asus ai suite it is on the cd but there is a new one (less than a week old) on the website.
any southbridge vcore mod????
My limit is sb vcore...
Help me plz!!!
soooo anybody wanna do the vcore and vdroop for me?
i can do it for a price. pm me.
Zhangmaster..where are you based?
T07N..I`ll do your avatar for free :p:
does this pencil mod voids the warranty?Quote:
Originally Posted by OnDborder
i mean if something happens i can erase the pencil so nobody can see it! :woot:
after all vdroop makes the motherboard more stable
Quote:
Originally Posted by karateo
You can erase it easily with a pencil rubber ;)
thanks :D
So for 1000% shure the mods are the same for the p5b-e ??
I'm not sure my friend ;)Quote:
Originally Posted by |-jokker-|
But it must be. I think.
what type of pencil do i use for hicookie's vdroop mod on the 1st page?
Anyone has the vSB mod?
zhangmaster12: something with low resistance.
How many Ohms would be 100% neutralizing the vDroop, but not anything extra?
does asus p5b-e plus have same mods like p5b deluxe ?
so a number two pencil will work?
and this mod workd on all p5b deluxes right?
i gotta be causous, dont wanna waste 150$
screw it, im gonna solder it. can i use this VR?
http://www.alliedelec.com/Search/Sea...C0&Ntk=Primary
why does it have three leg things?
I will make a vdroop/vcore mods, but i have a question:
Do i place the 50K resistor on 50K and then turn it down, or how do i start?
/Jesper
yes always start with max resistance when vmodding.
I am 99% sure it does, if you want post some pictures of the mod area and i can confirm it. But the board has the same PCB and layout, so i would imagine its not any different.Quote:
Originally Posted by Revage
Thx
/Jesper
fully clockwise is full resistance right?dont have multimeter atm hence the question. was going to do vcore,vmch and vdroop as I can measure them all in BIOS/windows.
Does show u teh tool from asus 1,76V Vmch if the setting in bios is 1,65V? If not u should better get a DMM.
Did all Vmods now and did the final adjustment:
Vcore = 1,72V
Vdimm = 2,72V
Vmch = 1,90V
Thats fine for my cooling imho. :)
Quote:
Originally Posted by funkflix
yeah couldnt find it, getting one today. didnt want to risk it without.
1.72V with watercooling? you are a brave man. I might run that though my kentsfield when I have a S775 kit for the MachR507a.
Already benched with 1,66V and reached 4320MHZ for 1M.
But idle temps of the cpu was 11/6°C. ;)
11/6C? have you got a water chiller there?
just a quick Q is it safe to ground all my vmods to the same ground poit?(was going to screw them to inside of case all on one screw.
1. My CPU is a really cool one and it is lapped, plus fluid metal thermal paste and i was outside. Watertemp was about 4°C. ;)Quote:
Originally Posted by pumbertot
2. Yes, it should work.
ive finished them all except vdroop. either my skills or equipment but whenever I got contact with the cap I would then short the other wire to the first by mistake. it seems hard to get hands on flux here in Oz so solder isnt flowing too great. I suppose a magnifying glass would help and good light as was damned hard to see such small components.
can some one please measure the resistance from the vcore solder point to ground through the pot set to full resistance? im only reading 1000ohms(its definitely a 50k pot and I checked before soldering it in) set to full. I havent powered the pc on yet as im afraid it will blow the cpu. maybe ive done somthing wrong but I dont see what as it looks soldered to the correct capacitor.
or funkflix can you measure resistance across vmch with vr full. also not getting anywhere near 50k. :(
Someone please tell pumbertot the original resistance between the VCore-mod points, either on an unmodded board, or just with the 50K turned up to it's full resistance. Don't know why he's asking for vmch. :shrug: He had PMed me.
Already told him my resitance on Vcore and it was 963 ohm, but i increased Vcore by 0.06V, so his ~ 1000 ohm should be fine.
yep thanks to both of you for your help. both mods running fine. also vdroop pencil has reduced it from .03V under load to .01V. just ready in time for my kentsfield thats on the way. :D
Gratz and have fun with it! :toast:Quote:
Originally Posted by pumbertot
Nice to hear that it worked fine. Didn't expect anything else. :)
i am worrying about the vdroop pencil mod.
if stability is the only result of this mod why motherboard manufacturers do not fix it from the beginning?
i can't understand why they just don't use a lower resistance?
Quote:
Originally Posted by karateo
It safes them money, that's why. ;) Google around for "droop voltage" or vdroop and you'll find out what I mean. With implemented droop function, the manufacturers can use less parts or parts of lower quality, thus they safe money.
Quote:
Originally Posted by celemine1Gig
well, if we can minimise the vdroop problem by reducing the resistance of a resistance (:slap: ) this means that they could just use a lower resistance from the beginning. And i think that they wouldn't save even 1$/motherboard.
The only logical reason that comes to my mind is that it stresses the motherboard more. (don't know how technically)
A few times i saw something like - "intel want that Vdrop from motherboard manufactures" over the forums, but don't know if this is true... ;)
chicken out of solder.
im using my p5b in a tower case. pencil dust wont fal or anything causing short outs willl it?
Sorry, but you don't get it. ;) It's not about that one resistor. Anyways, search on google, as I said, then you should discover what I'm talking about.Quote:
Originally Posted by karateo
It's all about decoupling capacitance. The VCore caps cost money and not little in comparison to other parts. For example have a look at how expensive the often used Sanyo OSCON caps are (4V 560µF is one example). Safeing one or two on each board is major cash! :fact:
cover any pencil mod with some sellotape to stop it wearing off. ;)Quote:
Originally Posted by zhangmaster12
Quote:
Originally Posted by celemine1Gig
I googled decoupling capacitance and i understood what you said.
the thing is that WE can minimise the vdroop effect just by decreasing one resistance. Couldn't they do just this? I am not saying to use completely different parts to diminish vdroop but to at least minimise it as we do.
do you still think that I don't get it?
Its been there for years. Nothing has been done about it, except by us. I doubt the situation/story will change.Quote:
Originally Posted by karateo
ya one thing i dont understand is all of a sudden on the forum everyone is crying about the vdroop, and mostly bashing Asus for it....for years since i have been into computers (before celly 300a days when OCing took off) all mobos have had a vdroop ..... only way i can explain this is the ppl that cry the most and bash Asus is that they probably started OCing with the Ultra-D that really had a very slight drop or none, and now migrated to c2d and dont even know that vdroops are normal on mobos....and lol its not a Asus "feature" like some are calling it, it has always been there on all mobos...well except the ultra-d but that is why it really was an exstraodinary peice of hardware.......Quote:
Originally Posted by GMX
You won't like to hear it, but yes.Quote:
Originally Posted by karateo
What you still don't seem to understand is that there are engineering rules. Changing the droop function has more effect on the vcore regulation than just the one different resistance. This resistance controls the droop function, it is not the droop function.
As I already said, they want to safe money, as they want to make money at all. I don't think that the manufacturers earn a fortune designing motherboards for enthusiasts. We are not the main source of capital in this industry. When you wanted a board that was perfect (speaking about regulation and parts), I guess you'd have to pay more than for example the latest Asus boards and still the board wouldn't sell good, as most people who buy these boards (even the so called enthusiasts) don't have a clue about vdroop etc. That's to say colored LEDs and mechanical and thermal features often are more eye-catching and buying reason.
So why honestly would any manufacturer in his right mind listen to what you say? Nothing against you, but think about it.
of course but hey wasnt the DFI venus designed designed to be like the expert but made purely for o/c. they could release P5B-Deluxe Extreme Edition with 0.001Vdrop, 2C Vcore, 1.9VMCH etc.lol just a thought.Quote:
Originally Posted by celemine1Gig
lol@me big update. yep mobo survived my not so great mod skills and then I killed here by trying to flash to older BIOs(why do you ask, because always looking for a better overclock). tried 24 BIOS reset(battery out etc etc) but no good no boot.
so have to RMA. prob is getting the mods off with crap iron I have. when I removed vmch wire the solder flowed between the 2 legs on the IC and no matter how I try with braid and iron it wont budge.2 legs are shorted.bah!
any tips on how to get it off?
You don't need to RMA the whole board when only the BIOS is the problem. Ask someone from the forums to rewrite the EEPROM for you. I bet someone near you (I mean in your country :) ) will be able and willing to help you. It's no big deal and sure cheaper and faster than RMA.Quote:
Originally Posted by pumbertot
And concerning the DFI Venus:
a) It was, as I said, very very expensive.
b) All the difference was, AFAIK, the all solid caps and another BIOS. If it was a bit more complicated, I apologize. :)
c) The Asus P5B-E Plus ist sort of Asus's Venus. Yet still there's the droop "problem" you all moan about and I doubt that Asus will ever do anything about it. :D Reasons stated above.
Try one of that things:
http://666kb.com/i/algin35dcbehocjvc.jpg
http://666kb.com/i/algincjbumj5jvw60.jpg
And try to boot with the Asus-CD was in the package of the board, maybe it will flash the old original bios. Or try a disk with flashprogram + biosfile. Sometimes the boards will boot this way!
@celemine1Gig
EEPROM is not in a socket, it is soldered to the board.
I think I will try that suction thing, already have wick/braid and it wont budge.lol if I just RMAed as is they would be like wtf is this?:DQuote:
Originally Posted by funkflix
Anyhow, are u sure that ur P5B bios is damaged? How the board affects if u power the pc on? Just black screen, but ur screen getting a signal? Or beeps?
Three days ago i flashed 1004 bios, and i needed about 2 hours to get my P5B back to life.. ;) Thought it was dead too.
WOW! :eek: All I can say is damn Asus. Intel has no socketed BIOS on BadAxe and many other boards, but they got good recovery functions. Is there none on the Asus?Quote:
Originally Posted by funkflix
Some guy on hwluxx wrote, that he get back his P5B to life, when he insert teh Asus-CD from the OVP. Then the board flashed back the 605 bios to the EEPROM and it worked again. Know that function from my old lanparty nf3, it flashed new bios from disk, after i had a corrupted flash.Quote:
Originally Posted by celemine1Gig
I would give that all a try before i make the RMA. :)
Ahh, looks like they integrated ATA support to the bootblock. Sounds like a chance.
I tried battery out for 24 hours. will try boot with cd like that other guy did but I need to remove this solder short first as cant power it on,lol.Quote:
Originally Posted by funkflix
yeah it was black screen.no ginal, no beeps.
I need pencil vmod for the memory, please :(
Slowly finding the balls to be a bit more adventurous and decided to do the Asus P5B Deluxe vdroop pencil mod :D I used a 2B pencil and about 4 strokes across resistor pictured with yellow line through it below:Quote:
Originally Posted by OnDborder
http://fileshosts.com/intel/Asus/P5B...pencil_mod.jpg
------------------------------------------------------------------------------------
Before vdroop pencil mod
- resistance was DMM measured at 80 ohm
- 1.325v bios set vcore = 1.280-1.288v bios monitored, 1.29v idle/1.27v load Asus PC Probe2 reported.
------------------------------------------------------------------------------------
After vdroop pencil mod
- resistance was DMM measured at 37.4 ohm
- 1.325v bios set vcore = 1.296v steady bios monitored, 1.30v idle/1.30v load Asus PC Probe2 reported.
I'm happy with that for now a reduction in vdroop by ~0.03v Asus PC Probe2 reported under load. Not going to be too greedy :D
------------------------------------------------------------------------------------
Before vdroop pencil mod @1.325v bios set
CPU Prime95 v25.1v small ffts load:
http://fileshosts.com/intel/Asus/P5B...ime95_load.png
CPU Prime95 v25.1v small ffts post load idle:
http://fileshosts.com/intel/Asus/P5B...tload_idle.png
------------------------------------------------------------------------------------
After vdroop pencil mod @1.325v bios set
CPU Prime95 v25.1v small ffts load:
http://fileshosts.com/intel/Asus/P5B...ime95_load.png
CPU Prime95 v25.1v small ffts post load idle:
http://fileshosts.com/intel/Asus/P5B...tload_idle.png
------------------------------------------------------------------------------------
@eva2000:
Nicely done! Just two things:
1.) Didn't you measure Vcore with a DMM? You wrote that you just measured the resistance before and after the mod, but no word about measuring vcore while testing. I wouldn't really trust the software readings too much and I think you know that, too.
2.)You do know that droop is a function of the current drawn by the CPU, do you? Honestly, I doubt that 2.933GHz at ~1.3V is your normal overclock, thus your droop-mod results won't help you much. If you want to minimize vdroop, then you have to do it again for each new operating point of the circuit. That's to say when you raise your vcore now and overclock some more, vdroop will occur again, although you did the mod. The reason is the higher current draw. If you are clocking at very high vcores for example, I'd always advise you to do the mod adjustable (with a trimmer), as it could be that you adjust vdroop to a minimum at high vcore, but then get increased idle volts at lower vcore settings, as a result.
Just a little reminder.
Yeah to be honest i totally forgot to DMM measure the vcore (didn't even bother looking for vcore measure pt in this thread) - was so preoccupied with the resistance measurement hehe
Yeah there's a bit more droop at higher vcore i.e. i get 0.008v droop under load at 3807mhz at 1.5875v bios (1.56v idle/1.552v load) :)
Idle
http://fileshosts.com/intel/Asus/P5B...ime95_idle.png
Load
http://fileshosts.com/intel/Asus/P5B...ime95_load.png
@3600Mhz use to take 1.45v (1.38v Asus PC Probe2 loaded), now with vdroop pencil mod 1.4125v (1.38v Asus PC Probe2 loaded) :)
http://fileshosts.com/intel/Asus/P5B...ime95_load.png
Also my P5B Deluxe is setup in a part of the room where it's hard to get down on my knees to hold a DMM steady for measuring vcore under load hehe
As i said, I'm not going to be too greedy here... I'm happy with the improvement so far... :)
From what I understand, Droop is built into Intels spec for CPUs, but AMD dont worry about things like that. The entire power circuit set, although obviously having similar raw components and basic purpose, is totally different.
To compare the Ultra-D (and NF4 LP series) to the C2D boards is crazy.
Quick question: The droop pot mod is applied directly across a resistor...is it safe to say this mod works off voltage divider ruling, not tricking the sense pin of an IC?
eva...did u try a quad yet with the vdroop....you will probably have to adjust it since with quads there is even bigger vdroop
eva2000 Superb mate. I was ready to strip my entire rig just to do this mod. No need now i seen your results mate
:toast:
thanks guys..
haven't tried Q6600 kents yet but it did 3600mhz at 1.45v bios set vcore before vdroop so can only be better now with penciled vdroop as is anyway :)
final outcome 4hrs solid @3807mhz at 1.5875v bios (1.56v idle/1.552v load) :)
Load
http://fileshosts.com/intel/Asus/P5B...d_4hr_mark.png
Post Load Idle
http://fileshosts.com/intel/Asus/P5B...01min_idle.png
Guess you were spot on... At higher vcore above 1.6125v the initial pencil modded of drooping resistor from 80ohm to 37ohm resistance wasn't enough to prevent further vdroop. So whipped out the 2B pencil and dropped resistance down to 14.5 ohm. And now it's all good at least from bios perspective :)Quote:
Originally Posted by celemine1Gig
Final outcome
http://i4memory.com/reviewimages/mot...lmod_table.jpg
Improvements after vdroop pencil mod are amazing! Before the mod, 10x 400FSB = 4000Mhz would need 1.7v max vcore set in bios for 1.62v idle and 1.59v load. I could pass single Super Pi 32M but Systool dual 32M Pi would reboot at 50-80% mark - Systool dual 32M Pi is a good indicator of whether a setting is capable of dual Super Pi 32M.. Now with vdroop pencil mod, with vcore set to 1.65v in bios I get 1.616-1.624v idle and 1.624v load and now capable of Systool dual 32M Pi :D
Idle
http://fileshosts.com/intel/Asus/P5B.../cpuz_idle.png
Systool dual 32M Pi load
http://fileshosts.com/intel/Asus/P5B...ol_dual32m.png
http://fileshosts.com/intel/Asus/P5B...m_finished.png
OT but man thats a nice quad :slobber:Quote:
Originally Posted by eva2000
eva how are your temps so low with a storm? whats your full loop consist of?I thought its roughly same as mine but you load 10c less than me at same volts. wait have you got airconditoning at home and have a low ambient?
Eva,
your excellent results inspired me to do the pencil mod. :toast:
load
http://img255.imageshack.us/img255/6...runningev7.jpg
idle
http://img255.imageshack.us/img255/6...4hridlenj9.jpg
mobo used to vdroop by 0.03/0.05v from idle to load at the same clocks and voltage set in bios (1.5000v) not to mention that at idle it sat @ 1.450 ish :slapass:
very quick and worthy mod imho :fact:
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 onQuote:
Originally Posted by pumbertot
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!
http://i4memory.com/reviewimages/cpu...arrived_06.JPG
congrats :)Quote:
Originally Posted by Slay0r