Radeon 9700 volt mods posted

[MrIcee]

Hi guys

Just stopped in to let you overclockers know we finally got a pictorial guide to volt modding the Radeon 9700 Pro posted on our site. OPPAINTER and myself and many others have tested and utilized these mods for some time now..and with xtreme cooling have been seeing GPU overclocks in the 450-500Mhz range. Come on over and check it out here :Radeon 9700 volt mods

Take care my friends,

Randi


__________________

[finalgt]

Just have one question. In the pictures, each VR has 2 wires...one connecting to the designated pins, but where does the second wire go? I can only assume it's for grounding purposes (unless I'm completely wrong...), but I'm not entirely sure where it's grounded to. Yes, I'm a noob when it comes to extreme stuff like this, hehe.

Thanks for the guide, PiLsY, Manoj, DD, and of course, Icee.

[CATCH22ATPLAY]

ok looks like you guys got the GPU and VDDQ/VDD volt mod correctly. BTW 454/363 zero artifacts with my 4 different volt mods and i'm using an old POS socket 370 heatsink/fan But good job with your mod so far and oops edited for political reasons lmao

[Lagwagon]

Core voltage checks out ok but the mem voltage only shows 1.4 volts.This is half of the default 2.8.What am i doing wrong?

[DDTUNG]

I think you have used the wrong measuring point for Vmem.

DDTUNG

[Lagwagon]

I have closely checked Manoj Mahtani's card and it looks like
the point to check is right next to the ground wire

[Lagwagon]

Can someone please tell/show me where on the card i can check the mem voltage.

[toofast]

One thing that might be handy guy`s if you showed the voltage measurement points so you know how high you got it cranked

[zteve]

Thanks MrIcee, will try it next week when I get my Radeon.
Your Voltmod tutorial for the KX7 is excelent.

[Pyro]

Originally posted by Lagwagon
Can someone please tell/show me where on the card i can check the mem voltage.

ThisGUIDE includes a picture of where to measure the memory voltage.

[Lagwagon]

That guide shows core modding only,not memory

[zippyc]

Hello All:

Although this thread is a little old, I still believe there is a need for clarification as to where the MEMORY voltage measure point is, not CORE as the link above covered.

Can anyone tell us where the best measurement point is for the memory?

(The scary part is I did the mod thinking I had the correct measuring point. After the mod, it clocked up to 379 on the memory and there was nothing burning, but I don't dare make any further adjustments until I can quantify the voltage changes).

Please help!

-Zippyc-

[PiLsY]

Apologies for not noticing this earlier .

New pic posted below :

[Edited due to idiocy - well spotted DD ]

PiLsY.

[PiLsY]

And for the sake of completeness I edited one of Mahoj's pictures to show Vgpu measurement. Hope you dont mind m8 .

PiLsY.

[dmitriyaz]

Originally posted by Lagwagon
Core voltage checks out ok but the mem voltage only shows 1.4 volts.This is half of the default 2.8.What am i doing wrong?

exactly the same problem here.
Lagwagon, i am wondering, are you using the original ATI?
the card i am Vmodding right now is a Gigabyte,
and while its highly unlikely, the strange 1.4v measurement might be attributed to the fact that its somehow different than the original ATI.
any other suggestions as to why that may be?
thanks

[zippyc]

Gentlemen,

I also get a measurement of 1.398V across that point, and I have a USA version of the ATI...built by ATI, so I do not believe that we have the right measurement point. The voltage does not change at that point with adjustment of my trimmer either, so I believe we will need further even further clarification on this matter.

Thanks Pilsy, for the help, but I think we are still stuck. Perhaps DDtung knows?

Thanks to all the xtreme moderators on this one!

-Zippyc-

[zippyc]

DD cleared this up for me via. PM last night, and I have taken the liberty of plagerizing the original pic. to illustrate the correct measuring point for your memory voltage. Measure the cap legs right next to the cap we were reading 1.4V from, and you'll get your readings (which DO change with the trimmer settings this time.)
:-).

I was running 3V when my memory hit the 379.93 mark in Powerstrip.

-Zippyc-

[a.p.versteeg]

I did the GPU mod and have used a 10kVR, but when I`m messured the Vgpu there is 1.7(Hercules is default already 1.6).
The 10K is messured on 8, but when I adjust I don`t messure difference in voltage. What`s wrong??
I also used a 8k and that give`s me 1.74vgpu(I use WC on the GPU) , what will bring me 7K. , higher voltage or lower?
And what`s the max voltage with water temp`s 19*C ?

Vgpu mod. @430/380 score 19863

http://service.madonion.com/compare?2k1=5091499

[PiLsY]

Ooops....

Sorry .

PiLsY.

[Lisch]

ok... so far my core is at 420, what do i set the 20k VR at initially for the mem volt mode?? how high is safe?

[zippyc]

Lisch,

Your resistor has less effect on raising the voltages the greater your resistance is. (think of it as no connection= infinite resistance=no volt mod IE: factory voltages.)

So in the future you can always start with whatever the greatest resistance setting is and should be safe (assuming you have the right value potentiometer or trimmer in the first place.) I adjusted a turn at a time until I got close to 7% higher voltage than factory specs and then went half a turn at a time from there. With the right variable resistor, you should quickly get a feel for how much the voltage is affected by a single turn.

I suggest you use a 20-turn trimmer for this mod as it seems to allow me to make minute adjustments very easily compared to the round tiny pot kind that requires a phillips head screwdriver to turn.

When my voltages were too high, the memory temperature became my limiting factor. When the memory thrermal probe read 50C or higher, I began experiencing slowdown on my scores and more jaggies, so I guess my advice is for you to be sure to monitor those temps closely.

Happy clocking!

-Zippyc-

[Lisch]

ok, thanks a lot!!!

[muzz]

I noticed that the x-bit labs mod has 1 more modification than this one, and was wondering why it has been left out of this one? He modded the memory at 2 different points,1 of them the same as this mod, but 1 under that heat shield...... did this get left out because it wasnt needed for some reason? Or because it was found out that it wasn't worth the effort to include it. I noticed the he uses fixed resistor values ( which for obvious reasons is not as tunable), like he did on the 8500 mod.
The mod page is here:
http://www.xbitlabs.com/video/radeon...-overclocking/

[dmitriyaz]

appearantly, the one under the shield is for increasing voltage of memory I/O circuits,
as opposed to increasing the voltage of "inner circuitry of the graphics memory", that we all know about.
interesting, this may be the reason why only few people got decent memory overclocks with only one of the memory mods--the I/O circuits couldn't handle the speed, while the memory may be capable of more...

[muzz]

Yeah I saw what it was for, I was just wondering why DD and Randi didn't use it........ interesting. If it will make a difference, and/or make it more stable( I should say no mem tearing) at higher clocks, then it is as good as done.
Thanks for your input dimitri.

muzz