Radeon X800 Non-Pro/X800 XL/X850 Voltmods

[Stormlord]

hi infrared

oh .. thats a really terrible with this shorted

which voltage had you used to get 480/610mhz?

greets
-stormlord-

 

[infrared]

I was using stock voltage on the core, because overvolting it didn't make any difference, even up to 1.7v, the memory was running at 2.10v and 2.45v i think. Not completely sure though.

Getting my Sapphire x800gto2 soon tho can't wait!

 

[TsvetanVR]

Hey guys . Is there anyone with X800XL and Zalman VF700 that can tell me how high on frequences he got ???
And what is the max safe temp where i must stop pushing mhz ?

P.S. I get to 425/580 without vmods at about 62C
P.S.2 Strange . In AtiTool on 580 memory i get lots of artifacts but in games and 3dmarks there are none

 

[Mussels]

yeah i had that setup. i got sweet fuck all, my cards a dud. i cant OC at all, or it just crashes randomly on me.

psst: ATI tool can have bugs try an older version, or a newer one.

edit: mine died around 75C+ before it started playing up, now its at stock i've had it at 100C+ without issues i had a fan die, ATI tool said 100C, touched heatpipe, burned hand, said OMFG and stopped playing BF2

 

[TsvetanVR]

I am using "The last stable version" on their site

Edit: I think to OC with Redline(Came on a CD with my Video) from now on!

 

[MaRiO]

Hi!

I have a question:

Could I make this vCore Mod to my Sapphire X800GTO Fireblade edition?

I have seen that my ATI have the same chip that the Sapphire that you put in the first page of this thread and I want be sure.









Thanks!

P.D. sorry but my english isnt very good

 

[Urlyin]

MaRiO ... indeed it looks like it's the same .. i'd do the vid vmod if you are not soldering VRs ... let us know how you make out ..

 

[MaRiO]

MaRiO ... indeed it looks like it's the same .. i'd do the vid vmod if you are not soldering VRs ... let us know how you make out ..

ohh! thanks!

Can I understand that the VID Vmod is possible in my x800gto fireblade if I am not solder VR´s?

And you want that I say how I make the vmod?

Sorry, but how I said, my english is very bad and I dont understand you very well

If I am wrong, please, say me

Thank you very much

 

[MaRiO]

Can I make vCore Mod of this way?

I am interested in this vmod but i dont know how is the vid´s in this moments, (activate: vid 1 + 2 + 3 and vid 4 disactivated or vid 1 activated and the others desactivated...)

Thanks

 

[MaRiO]

nothing?

 

[Urlyin]

Mario .. from the article on the Vid vmod

The VID Vmod requires a conductive pen or jumper to work. Looking at the image above, labeled VID Vmod, we can ascertain our default factory voltage by the placement of the SMR resistors by using the VID table below it. The picture shows a card with VID code 01101, which is 1.35V. By looking at the VID Vmod pic we can see, that there are SMD resistors at VID1, VID4 following the lines from pins 10 & 7 and by using the VID Table we use a zero(0) to show a resistor is present, with a 1 meaning no resistor present. So using 1.35V as an example to up the voltage using the VID setting we would use the VID table to determine a higher voltage with the same two SMR in place like the 1.55V setting to which we just connect the solder pads at VID2 with our conductive pen. Which would give a VID code of 01001. Unfortunately this limits our choices and for those with a 1.40V default voltage means the next available VID setting would be 1.60V without removing a SMR. Of course all is not lost if you are using a Water Block for cooling.

 

[MaRiO]

thanks guy!

i must test with a voltimeter all the vids and of this way,and i will know if it is 010010 or 011001, or... - true?

Thanks

 

[Urlyin]

thanks guy!

i must test with a voltimeter all the vids and of this way,and i will know if it is 010010 or 011001, or... - true?

Thanks

No Mario the Picture has the layout and you need to verify the VID voltage by the chart to determine what your default voltage is ... then you can decide on which one to connect to up the voltage

 

[MaRiO]

and how I can make this?

Thanks

 

[MooSey]

Hey fella's

just carried out the pencil mod on my X800XL. I'd love to say I got 500/600 but alas i only got 465/535 (450/525 previous to mod)to complete 3Dmark05/06. Im sure i could push the voltage levels up but like the article sez, I don't wanna get greedy! Looking at some of the clocks here im sure mine's an old duffer. (AGP by the way).
My card has a Zalman VF700CU fan on board, temps never topped 45 deg C.
Thanks Urlyin anyway, a good article and well described. (I managed to get 1.45v on the R1597 solder pads with pencil, maybe I'll try the VID mod instead).
Any other mods/tweaks i can do to this card to prolong its soon to be upgraded limited life?

 

[infrared]

the R430 core really doesn't like too much voltage. I got nothing out of voltmodding my core. I did however get a significant increase on the memory. Went from 550mhz to 610mhz Thats using the maximum safe recommended voltages btw, and with an AC ATI silencer cooling the memory.

 

[Erasage]

Hi

I am new here on this forum and have a quick question about the VR voltmod. For the GPU vmod can I use a 5k variable resistor instead of a 10k? and can I use 50k variable resistors for the vdd and vddq mods.
The only problem I see for the gpu mod will be a higher increase in gpu voltage than when using a 10k VR. Applying the rule of thumb mentioned in the article, that a 10k VR will get you 0.04V increase would mean that when I start out at 5k I would probably get around a 0.1V increase?! Can anybody verify that? I am using water so 1,5V-1,6V should be fine.

When using the 50k VRs instead of the 20K VRs I would probably have to turn the resistanz down some more before seeing the same results as with the 20k VR, is that correct?

 

[infrared]

the 50k VRs for the resistors are fine, that's what i ended up using. But beware, you will be turning the resistance down, and at first the voltage will rise slowly, but after you get below 16k, the voltage increases very quickly. I nearly made that mistake with my x800xl, very easy to become inpatient, and start doing 3 turns at a time - not a good idea

The 5k VR would be risky, it might work, but if you could get a 10k, it would be much safer.

 

[Erasage]

Could anybody check what voltage to the core they get when turning their VR to 5k ohms? Or maybe someone has some info on whta voltage the gpu gets with 6k or 7k?
Thanks guys

Ok I have measured the initial resistance for my Card and my multimeter tells me 0.433kohm which is 433ohm don´t know why it just doesn´t say the second one. Anyway I have done the math and since this is really nothing else than 2 resistors in parallel ->

R = 433*5K/(433+5K) = 398.5ohm which is pretty close to the R = 420*10K/(420+10K) = 403ohms mentioned in the article.

Since my Card has a standard VGPU of 1,42V 5K ohm should give me about a 36ohm drop which should translate into a boost vgpu of about 0.08-0.1V resulting in a vgpu of about 1,5V

I just really don´t whant to mess up my card so can anybody tell me if my math is right and is there really a linear correlation between the resistance and the resulting gpu voltage. Cause Infrared just mentioned someting about the voltage increasing quicker when the resistance is below a certain point??

 

[Erasage]

Well I did the mod and turns out the math I did was right

I did the vdd and vddq mods with the 50k VRs. Not wanting to trash my card with the 5k VR for the gpu mod I started out doing the pencil mod slowly dercreasing the resistance until I reached about 398ohm. From there I soldered in the 5k VR and all was good with the gpu getting 1,53V.

I am pretty happy with my OC. This is a X800GTO with 12pipes unlocked to 16pipes. Standard clocks are 400,490. No Voltmod I was able to do about 620,560 now with the voltmod and 1.6V to the core and Vdd and vddq @ 2.15V I am able to do 670,580 . Temperature on the core is max. around 48C

The ram even did 600mhz, but for that I had to lower the GPU clock to about 600mhz as well.

 

[infrared]

Great, nice job.

If you wanted a little more, the vdd voltage can go up a little bit. Maximum is 2.45v. I'm pretty sure that's what i used on my x800xl, and was getting 610mhz stable easily. What cooler is on your card? If the ram isn't cooled, you've got about the right voltage now.

 

[Erasage]

I am using an old cpu waterblock on the Card, Innovatek Rev 3.0, it used to be one of the best cpu coolers out there. I fitted some heatsinks on the rams. So maybe I can even up the voltage some more for the ram? I want it to be 24/7 stable and safe though.

I have attached some pics so you can take a look at the setup.
I am considering cooling the voltage regulators as they get really hot.

 

[Urlyin]

I am using an old cpu waterblock on the Card, Innovatek Rev 3.0, it used to be one of the best cpu coolers out there. I fitted some heatsinks on the rams. So maybe I can even up the voltage some more for the ram? I want it to be 24/7 stable and safe though.

I have attached some pics so you can take a look at the setup.
I am considering cooling the voltage regulators as they get really hot.

Where there's a will there's a way nicely done Erasage ... now you can post your pics here

 

[Turrican]

Hi

Last week i got my new Connect 3D X850XT from the RMA.

the last one wasn't that good in ocing. i was only able to reach 615/595 /w mem-tweak and Vmods.

But my new X850 XT is a really good one.

Now i'm at 660/610 (only VGPU Mod, VDDR/VDDQ will follow).
The Card is watercooled and running with 1.73V.
I hope there's more room for ocing

in 3dmark 05 i already get ~7500 3DMarks

greetings Turrican

 

[Urlyin]

Hi

Last week i got my new Connect 3D X850XT from the RMA.

the last one wasn't that good in ocing. i was only able to reach 615/595 /w mem-tweak and Vmods.

But my new X850 XT is a really good one.

Now i'm at 660/610 (only VGPU Mod, VDDR/VDDQ will follow).
The Card is watercooled and running with 1.73V.
I hope there's more room for ocing

in 3dmark 05 i already get ~7500 3DMarks

greetings Turrican

Well done