Question VDroop pencil mod for the Gigabyte P35-DS3 rev 2.1 motherboard ?

[LuKaWin10]

Hey guys, I wanna do the VDroop mod on this board mentioned above. I would want to deal with a lower VDroop as it is affecting my overclocking abilities by a LOOONG SHOT. Can anybody show me what resistor/s exactly I need to pencil out, like show it in a close up image or something else? Please someone help!
If anyone needs specs it's here:

Mobo: Gigabyte P35-DS3 rev 2.1
CPU: Q9550 @3.6 GHz (1.30625V currently, default VID is 1.2875V)
GPU: GTX 970 and GT 730 (used for extra HDMI ports)
PSU: MSI MAG A650BN
Cooler: LC POWER LC-CC-120 180W TDP cooler
RAM: G.SKILL DDR2-1066 RAM F2-8500CL5D-4GBPI TT Series, the Blue and White ones with huge heatsinks
Case: DELUX MG760 with case mod to have 3 80mm fans and 1 120mm fan
SSD: Samsung 870 EVO 500 GB and ADATA SU650 512GB
HDD: ST3250410AS 250 GB HDD
PCI-E cards: TG-3468 Ethernet card


If you need any images feel free to ask!

 

[Lutfij]

Perhaps you can look through this thread;

GIGABYTE GA-P35-DS3L VOLT MOD - PENCIL MOD - HARD MOD FOUND!

GIGABYTE GA-P35-DS3L VOLT MOD - PENCIL MOD - HARD MOD FOUND! !!DO THIS AT YOUR OWN RISK!! Well its been a long time coming. I know LOTS of people are looking this mod. I spend a ton of time reading poking going back and reading some more poking trying different things reading poking...

www.overclockers.com

IMHO, I'd leave them as is, since chances of you finding another working board for your platform might be slim to none.

 

[LuKaWin10]

Perhaps you can look through this thread;

GIGABYTE GA-P35-DS3L VOLT MOD - PENCIL MOD - HARD MOD FOUND!

GIGABYTE GA-P35-DS3L VOLT MOD - PENCIL MOD - HARD MOD FOUND! !!DO THIS AT YOUR OWN RISK!! Well its been a long time coming. I know LOTS of people are looking this mod. I spend a ton of time reading poking going back and reading some more poking trying different things reading poking...

www.overclockers.com

IMHO, I'd leave them as is, since chances of you finding another working board for your platform might be slim to none.

I saw this but I have no image of where to pencil it out..but thanks anyway

 

[BFG-9000]

I am not a fan of vDroop mods or LLC, because of how they work.

The reason Intel specified a vDroop amount in the first place is because the very low voltage means you are turning on and off around 100A through those little traces, so you either get voltage droop, or overshoot when the load is removed and power drops back to idle. If you want less actual droop under load then you have to engineer in more traces and pins to the processor. Whereas a "vDroop mod" will raise voltages everywhere exactly as if you had set the vCore voltage higher in the first place--it just means the overshoot will now spike further above the vCore voltage setting when the load is abruptly removed. In other words it just makes your vCore setting lie to you so you can feel better about using "less" voltage.

Fortunately you have a lot of vCore headroom available for your 45nm Core 2 Quad, as its maximum safe 24/7 vCore voltage is considered 1.45v, so just set the vCore higher instead. I did run one at 1.475v for more than 20 years and it still works fine, but you may not be so lucky and that requires a lot of cooling capacity. At this point replacement chips are so cheap that I would have no issue blasting 1.5v through one.
Note that P35 is much less conducive to high FSB on quads than P45, so you will most likely need to increase VTT and MCH voltages, but should not exceed 1.4v for either. Given default VTT voltage on P35 is 1.1v, this means max +0.3v on your board. Default MCH is 1.15v but seems to do best at 1.35v which is +0.2v on your board. Yes, these will increase stress on the chipset and is why everyone suggests a higher-multiplier CPU instead, so you won't need to do any of these things to reach the same core clock speeds at a more reasonable FSB.

If you must, the specification sheet shows you follow the 4th pin from the bottom left which is FB on pin 14 to a resistor that eventually makes its way back to VDIFF on pin 15 though I would strongly recommend a trimpot across the resistor rather than a pencil. But as I said, it's just a fancy way of pretending you are using less voltage than you really are:

 

[LuKaWin10]

I am not a fan of vDroop mods or LLC, because of how they work.

The reason Intel specified a vDroop amount in the first place is because the very low voltage means you are turning on and off around 100A through those little traces, so you either get voltage droop, or overshoot when the load is removed and power drops back to idle. If you want less actual droop under load then you have to engineer in more traces and pins to the processor. Whereas a "vDroop mod" will raise voltages everywhere exactly as if you had set the vCore voltage higher in the first place--it just means the overshoot will now spike further above the vCore voltage setting when the load is abruptly removed. In other words it just makes your vCore setting lie to you so you can feel better about using "less" voltage.

Fortunately you have a lot of vCore headroom available for your 45nm Core 2 Quad, as its maximum safe 24/7 vCore voltage is considered 1.45v, so just set the vCore higher instead. I did run one at 1.475v for more than 20 years and it still works fine, but you may not be so lucky and that requires a lot of cooling capacity. At this point replacement chips are so cheap that I would have no issue blasting 1.5v through one.
Note that P35 is much less conducive to high FSB on quads than P45, so you will most likely need to increase VTT and MCH voltages, but should not exceed 1.4v for either. Given default VTT voltage on P35 is 1.1v, this means max +0.3v on your board. Default MCH is 1.15v but seems to do best at 1.35v which is +0.2v on your board. Yes, these will increase stress on the chipset and is why everyone suggests a higher-multiplier CPU instead, so you won't need to do any of these things to reach the same core clock speeds at a more reasonable FSB.

If you must, the specification sheet shows you follow the 4th pin from the bottom left which is FB on pin 14 to a resistor that eventually makes its way back to VDIFF on pin 15 though I would strongly recommend a trimpot across the resistor rather than a pencil. But as I said, it's just a fancy way of pretending you are using less voltage than you really are:

Thanks for the help and for this useful comment. I found the mod from the wayback machine for my old board so I'm gonna try it and see if it gets me any better results. And I will buy a Xeon E5450 as I do have a modded BIOS along with some other stuff modded to it

 

[LuKaWin10]

I am not a fan of vDroop mods or LLC, because of how they work.

The reason Intel specified a vDroop amount in the first place is because the very low voltage means you are turning on and off around 100A through those little traces, so you either get voltage droop, or overshoot when the load is removed and power drops back to idle. If you want less actual droop under load then you have to engineer in more traces and pins to the processor. Whereas a "vDroop mod" will raise voltages everywhere exactly as if you had set the vCore voltage higher in the first place--it just means the overshoot will now spike further above the vCore voltage setting when the load is abruptly removed. In other words it just makes your vCore setting lie to you so you can feel better about using "less" voltage.

Fortunately you have a lot of vCore headroom available for your 45nm Core 2 Quad, as its maximum safe 24/7 vCore voltage is considered 1.45v, so just set the vCore higher instead. I did run one at 1.475v for more than 20 years and it still works fine, but you may not be so lucky and that requires a lot of cooling capacity. At this point replacement chips are so cheap that I would have no issue blasting 1.5v through one.
Note that P35 is much less conducive to high FSB on quads than P45, so you will most likely need to increase VTT and MCH voltages, but should not exceed 1.4v for either. Given default VTT voltage on P35 is 1.1v, this means max +0.3v on your board. Default MCH is 1.15v but seems to do best at 1.35v which is +0.2v on your board. Yes, these will increase stress on the chipset and is why everyone suggests a higher-multiplier CPU instead, so you won't need to do any of these things to reach the same core clock speeds at a more reasonable FSB.

If you must, the specification sheet shows you follow the 4th pin from the bottom left which is FB on pin 14 to a resistor that eventually makes its way back to VDIFF on pin 15 though I would strongly recommend a trimpot across the resistor rather than a pencil. But as I said, it's just a fancy way of pretending you are using less voltage than you really are:

I'm gonna go insane. I have been tryna find the resistor for a long time and still I don't know which one. I even measured some one time it is 1600 Ohms and 2nd goes back to 1900 can anyone help? I will show an image of it

https://imgur.com/a/XH5YorU

View: https://imgur.com/a/XH5YorU

 

[LuKaWin10]

Anyone?

Edit: I penciled the wrong SMDs and resistor and dealt with BSODs. I cleaned up everything with water cuz I did not have iso alc (Ik im stupid) but now everything works again so win win?

 

[LuKaWin10]

Perhaps you can look through this thread;

GIGABYTE GA-P35-DS3L VOLT MOD - PENCIL MOD - HARD MOD FOUND!

GIGABYTE GA-P35-DS3L VOLT MOD - PENCIL MOD - HARD MOD FOUND! !!DO THIS AT YOUR OWN RISK!! Well its been a long time coming. I know LOTS of people are looking this mod. I spend a ton of time reading poking going back and reading some more poking trying different things reading poking...

www.overclockers.com

IMHO, I'd leave them as is, since chances of you finding another working board for your platform might be slim to none.

Actually finding S775 boards in my country is actually very easy. So if the board ever dies out because of my stupidity, I can just gamble and buy a new one😎👌

 

[LuKaWin10]

I am not a fan of vDroop mods or LLC, because of how they work.

The reason Intel specified a vDroop amount in the first place is because the very low voltage means you are turning on and off around 100A through those little traces, so you either get voltage droop, or overshoot when the load is removed and power drops back to idle. If you want less actual droop under load then you have to engineer in more traces and pins to the processor. Whereas a "vDroop mod" will raise voltages everywhere exactly as if you had set the vCore voltage higher in the first place--it just means the overshoot will now spike further above the vCore voltage setting when the load is abruptly removed. In other words it just makes your vCore setting lie to you so you can feel better about using "less" voltage.

Fortunately you have a lot of vCore headroom available for your 45nm Core 2 Quad, as its maximum safe 24/7 vCore voltage is considered 1.45v, so just set the vCore higher instead. I did run one at 1.475v for more than 20 years and it still works fine, but you may not be so lucky and that requires a lot of cooling capacity. At this point replacement chips are so cheap that I would have no issue blasting 1.5v through one.
Note that P35 is much less conducive to high FSB on quads than P45, so you will most likely need to increase VTT and MCH voltages, but should not exceed 1.4v for either. Given default VTT voltage on P35 is 1.1v, this means max +0.3v on your board. Default MCH is 1.15v but seems to do best at 1.35v which is +0.2v on your board. Yes, these will increase stress on the chipset and is why everyone suggests a higher-multiplier CPU instead, so you won't need to do any of these things to reach the same core clock speeds at a more reasonable FSB.

If you must, the specification sheet shows you follow the 4th pin from the bottom left which is FB on pin 14 to a resistor that eventually makes its way back to VDIFF on pin 15 though I would strongly recommend a trimpot across the resistor rather than a pencil. But as I said, it's just a fancy way of pretending you are using less voltage than you really are:

This resistor? (Check image)
https://ibb.co/WWdQ8vWZ . Also how do i pencil it, the resistor or even the solder pads and everything on it?

 

[BFG-9000]

No, not that one. Looks the same as P35-DS3R:

 

[LuKaWin10]

No, not that one. Looks the same as P35-DS3R:

Oh I'm so dumb. Yeah that's why I was getting BSODs.

So this one yeah?:
https://ibb.co/1JM5XXBn

 

[LuKaWin10]

Oh I'm so dumb. Yeah that's why I was getting BSODs.

So this one yeah?:
https://ibb.co/1JM5XXBn

And what type of pencil do I use? I think 2B or 4B is good

 

[BFG-9000]

Yep, that's the one. I'm going to warn that you can get 12v out of it when the BIOS still reads 1.2v if you lower the resistance enough. Also that it is ridiculously easy to blow something up from shorting voltmeter leads where they don't belong, because everything is so small.

There's usually no conformal coating on those so you just color in the top of the resistor with a pencil, a little bit at a time until you get the voltage you want. If there is a coating then you should be able to scrape it off with just the pencil.

 

[LuKaWin10]

Yep, that's the one. I'm going to warn that you can get 12v out of it when the BIOS still reads 1.2v if you lower the resistance enough. Also that it is ridiculously easy to blow something up from shorting voltmeter leads where they don't belong, because everything is so small.

There's usually no conformal coating on those so you just color in the top of the resistor with a pencil, a little bit at a time until you get the voltage you want. If there is a coating then you should be able to scrape it off with just the pencil.

Got it, thank you so much! I am just gonna get a 6B pencil or whichever one I find in the local store then tell you my results. And I will be careful with this mod not to short something out. I will try getting as low Ohms as possible then tell you the results

 

[LuKaWin10]

Yep, that's the one. I'm going to warn that you can get 12v out of it when the BIOS still reads 1.2v if you lower the resistance enough. Also that it is ridiculously easy to blow something up from shorting voltmeter leads where they don't belong, because everything is so small.

There's usually no conformal coating on those so you just color in the top of the resistor with a pencil, a little bit at a time until you get the voltage you want. If there is a coating then you should be able to scrape it off with just the pencil.

Mod from vr-zone doesn't work! I am gonna try finding a different one.