Radeon X800 Non-Pro/X800 XL/X850 Voltmods

[XibaD]

Can someone help me?

 

[Urlyin]

Can someone help me?

First you should use a multimeter if you are going to do the pencil vmod .... the conductive pen is also called a circuit writer like here or even a window defroster repair kit ..

 

[XibaD]

Ok, finally with multimeter I tried pencil vgpu mod once again. Probing, I could raise vgpu to 1'48v, temps went high 2 3º (about 57º full). Is it safe with Zalman Vf700 or Ati Silencer?

 

[Urlyin]

Ok, finally with multimeter I tried pencil vgpu mod once again. Probing, I could raise vgpu to 1'48v, temps went high 2 3º (about 57º full). Is it safe with Zalman Vf700 or Ati Silencer?

That is a safe temp XibaD .... so 57c is the temp at load?

 

[XibaD]

Yes, 57ºc is at full load (well it may get a little higher about 60º max). The OC capabilities increased about 15mhz without artifacts in core. But now I get artifacts in games with same frecuencies that before vmod didn't show any. Why this could be?

 

[Urlyin]

XibaD ... that's the problem with the non resistor pencil mod .. the graphite doesn't like to stick to the two solder pads... it maybe that graphite has fallen off or been blown off ... what was the vcore before you did the vmod? did you check the ohms before and after? ... did you cover it with tape?

 

[Raptor]

Sapphire X800XL (R430) AGP with AC ATi Silencer 5 Rev 2, AS5 on the GPU. Could only do about 430/560 stable before the mod (at 1.35V default) - stable as in game/benchmark stable, although ATI Tool doesn't find any artifacts (with the slider to the left) down at about 425/530. Did the VID mod (my initial configuration was exactly the same as the one in the picture from the guide) to 1.55V using a normal 1K resistor. Now it is game/benchmark stable for 6+ hours at 460/560. Max temperature I hit is in 3D Mark 2001 Nature test loop for over 3+ hrs - 59c. Is that ok?

 

[XibaD]

XibaD ... that's the problem with the non resistor pencil mod .. the graphite doesn't like to stick to the two solder pads... it maybe that graphite has fallen off or been blown off ... what was the vcore before you did the vmod? did you check the ohms before and after? ... did you cover it with tape?

Yes, I covered all with tape. Before mod, my card showed (well I measured VGPU with ASUS software, because I'm afraid to blow up my card If I do wrong with multimeter) 1'33v, pretty low for this card. I had locks when trying to find max core in ati tray tools and so on. So I thought about modding.

I measured de resistor between the solder pads before the mod. With the multimeter in 20k ohm scale, it showed 0.44. Well, I put graphyte between the solders until it lowered to 0.40, then I checked VGPU with ASUS soft. It showed 1'47v. The temperature went high between 3 and 5 degrees higher, so I thought about removing a little graphite. I tried to blow some of it and tried to clean it with a little brush. It worked, ASUS soft show now 1'44, 145v. Perfect, temps went a little low and the core is more stable now (It seems that with 1'47v the only thing that I gained was overheat). Well I have a Zalman VF700 Al-Cu, but I'm thinking of changing to an ATI Silencer 5.

I found max core and mem with the extra energy and it went high a little: 450/570 core mem stable without artifacts for 2 hours (the time that I had tested it). For example, Far Cry shows no artifacts with this overclock, Call of Duty 2 neither, but F.E.A.R. does. If I lower oc to default frecuencies, the artifacts are gone. It seems that F.E.A.R. and GPU oc does not work very well together, or that game overheats the GPU. I don't know.

And this are my experiences with the VMOD. Someone has anything to add?

Thanks Urlyin for answering my questions.

P.D. : yes, I covered my work with tape, and my full temps are 60º w games and w zalman in 5v mode

 

[Urlyin]

Sapphire X800XL (R430) AGP with AC ATi Silencer 5 Rev 2, AS5 on the GPU. Could only do about 430/560 stable before the mod (at 1.35V default) - stable as in game/benchmark stable, although ATI Tool doesn't find any artifacts (with the slider to the left) down at about 425/530. Did the VID mod (my initial configuration was exactly the same as the one in the picture from the guide) to 1.55V using a normal 1K resistor. Now it is game/benchmark stable for 6+ hours at 460/560. Max temperature I hit is in 3D Mark 2001 Nature test loop for over 3+ hrs - 59c. Is that ok?

Raptor ... 59c is okay ... good job on the mod

 

[Urlyin]

Yes, I covered all with tape. Before mod, my card showed (well I measured VGPU with ASUS software, because I'm afraid to blow up my card If I do wrong with multimeter) 1'33v, pretty low for this card. I had locks when trying to find max core in ati tray tools and so on. So I thought about modding.

I measured de resistor between the solder pads before the mod. With the multimeter in 20k ohm scale, it showed 0.44. Well, I put graphyte between the solders until it lowered to 0.40, then I checked VGPU with ASUS soft. It showed 1'47v. The temperature went high between 3 and 5 degrees higher, so I thought about removing a little graphite. I tried to blow some of it and tried to clean it with a little brush. It worked, ASUS soft show now 1'44, 145v. Perfect, temps went a little low and the core is more stable now (It seems that with 1'47v the only thing that I gained was overheat). Well I have a Zalman VF700 Al-Cu, but I'm thinking of changing to an ATI Silencer 5.

I found max core and mem with the extra energy and it went high a little: 450/570 core mem stable without artifacts for 2 hours (the time that I had tested it). For example, Far Cry shows no artifacts with this overclock, Call of Duty 2 neither, but F.E.A.R. does. If I lower oc to default frecuencies, the artifacts are gone. It seems that F.E.A.R. and GPU oc does not work very well together, or that game overheats the GPU. I don't know.

And this are my experiences with the VMOD. Someone has anything to add?

Thanks Urlyin for answering my questions.

P.D. : yes, I covered my work with tape, and my full temps are 60º w games and w zalman in 5v mode

XibaD ... I wouldn't trust the ASUS program as far as I could throw W1zzard... I don't see how a .04k ohm drop would give you close to a .10v increase to vcore.. really do think you should check out the Vid Vmod.. it's not permanent and you'll get a more exact increase in voltage ...

 

[XibaD]

XibaD ... I wouldn't trust the ASUS program as far as I could throw W1zzard... I don't see how a .04k ohm drop would give you close to a .10v increase to vcore.. really do think you should check out the Vid Vmod.. it's not permanent and you'll get a more exact increase in voltage ...

But starting with 1'35v configuration, I can't reach 1'45v, only 1'4v or 1'55v with VID VMOD, do I? What do you mean It's not permanent?

I figured out from your article that (for example) to pass from 1'35v core to 1'4v core the only I have to do is join the VID0 solder pads with a conductive pen, its that correct?

Sorry for so many questions

 

[Urlyin]

But starting with 1'35v configuration, I can't reach 1'45v, only 1'4v or 1'55v with VID VMOD, do I? What do you mean It's not permanent?

I figured out from your article that (for example) to pass from 1'35v core to 1'4v core the only I have to do is join the VID0 solder pads with a conductive pen, its that correct?

Sorry for so many questions

NP .. that is correct ... you can clean off the conductive pen with alcohol ...

 

[XibaD]

There is no way to increase VGPU to 1'45v with vid vmod?

 

[Urlyin]

What is your VID code 01101?

 

[XibaD]

Yes, thats my vid now

 

[Urlyin]

You'd have to go to the 1.55v which wouldn't be bad if you don't go to high on the oc and keep an eye on the temps ...

 

[XibaD]

Yes I know. But I was following the guide exactly, and as it says not passing 1'55v, I didn't consider that option (and I want to get the most of my card's OC)

Well, thanks anyway, I'll see what I can do. First of all is to buy a conductive pen

 

[Urlyin]

Yeah ... it's a "Catch 22" you'll find it hard to do the pencil vmod and don't like me discourage you in that attempt... just don't rely on the ASUS prog to get your voltages ... the VID Vmod is a much easier option in that you just need to connect the dots per say ... even though you are running at a higher voltage but at stock speeds you shouldn't notice very high temps until you go to overclock where the temps will start to overwhelm your cooling ... just need to be careful take it a little bit at a time to find the median between oc and heat, possibly obtain better cooling down the road ...

 

[XibaD]

By the way I will remove soon the Zalman and I will buy an ATI Silencer 5 for this card to see if I can lower the temperatures a little more. For now (and with this shitty pencil vmod) I reach 450/570 with 60º at full load and with Zalman in 5v mode (oh yeah, silence baby )

Thanks again dude!

 

[infrared]

The measuring point on my x800 for the vgpu mod is covered by my ati silencer backplate. If i install a VR, and start from maximum resistance, and slowly reducing it to increase voltage, can i judge the optimum voltage just by slowly making small adjustments and monitoring temperature?

I'm thinking this method wouldn't work for the ram though

 

[Urlyin]

Infrared ... a 10k VR set at 10k will give you around .04v on the vcore, so yes you could work out the math if you wanted to to it that way but I would suggest if you are going through the trouble of soldering the VR you might as well solder a wire on the measure point to the top the of PCB and get an accurate reading... look here to see some of the setups that people have posted ... because if you lose count on how manys time you turned it or get confused ...

 

[infrared]

man... why didn't i think of that

Thanks for the hint m8

 

[Kai]

Hi everyone! I' m new to the forum, but I've been a reader for quite some time!

Well, on with the question!

I have a Sapphire GTO2 Dual-DVI. These cards come with the 16 pipelines already unlocked as you might know. Therefore, all is needed is to o/c the card to X850XTPE speeds!

And here is the prob: I o/c to 540/590 and let ATITool run with the 3D view enabled. Temperature is between 58-61 deg after a few minutes. And a few minutes later the screen goes black and I have to reset the system!
I don't see any artifacts, just the black screen that happens unexpectedly!

I suspected the PSU at first, but I tested 3 of them and currently I am with an Enermax 535W, so power shouldn't be a prob!

Do you think that this instability could be resolved with a V-mod?
It it logical to have the black screen without artifacts or it could be a mobo problem?

Thanx!

 

[Mussels]

temps seem good (at 70C+ you may start to have heat issues) you've ruled out PSU too. You can try a mod,but keep in mind you lose the warranty, and can kill the card. I may sound negative, but i and a few others here have indeed killed cards modding them, its a warning beginners need to hear.

That said, Try the pencil mod first so you get the hang of things.

 

[Super XP]

Yes, my card was also unlocked. But there still is a problem. What happend to me was that the system was reading the card as a X800XL - R430 core - with same speeds & 16 pipeline.

So, I had to "Force" flash the video bios to a X850XT so that it would instal the correct R480 Cat drivers. Now it runs even faster @ same speeds as the R430.