The Complete ATI Radeon 9800 Pro Voltage Modding Guide!

[wiseblud007]

I have tried the pencil techinque, and it seems to not be working for me. I have read the default voltages and they are as follows: VPU= 1.57ish (kinda low), Memory= 2.7ish ( seems okay). My card has a visibly confirmed R360 and when modded to an XT, works fine on everything but Doom 3. My problem is that I want the little speckles to go away and thus my volt modding attempt.

When I read the default voltage, I thought that there might be something wrong but it seems to work fine. I have tried to put enough graphite, excessive amounts on the posts of the chip and connect the circuit on the chip itself as described in your article. No matter how much (graphite) I put on these posts, the voltage does not waver from 1.57. The volt meter is a radio shack analogue volt meter set on DC 5V (I assume its direct current), and I am totally frustrated with the results. One thing that may be suspect is my power supply, but I cannot believe that it wouldn't work because of this, since my rig is stable. If you could throw some nuggets of wisdom my way, it would be greatly appreciated.

Thanks
Jeff

[Max_87]

I'm very sure that you didn't put enough graphites in the place where the pins protrude out of the IC's plastic body

[wiseblud007]

By that, do you mean the pins themselves? I had basically colored the pins near black with graphite and connected them on the chip like in the article. I will try this once again to make sure, but I believe that I had done that. One question though, are you talking where the pins protrude from the PCB or out of the chip itself?

Thanks for your help.

Jeff

[wiseblud007]

Okay, retried the mod after blowing off the excess graphite placing alot of graphite along where the pin sticks out of the chip, still no change in voltage. My card is a 128 Mb 9800 Pro with an R360 and a 9800 pro PCB. I am beginning to think that it may be my PSU (an Enlight 420 with a near out of spec 5 rail, 4.75). The voltage reading is still at 1.57ish. Have no clue what I am doing wrong.

Thanks
Jeff

[Max_87]

Originally Posted by wiseblud007

By that, do you mean the pins themselves? I had basically colored the pins near black with graphite and connected them on the chip like in the article. I will try this once again to make sure, but I believe that I had done that. One question though, are you talking where the pins protrude from the PCB or out of the chip itself?

Thanks for your help.

Jeff

the chip itself even i did the same mistake

[Snowman]

i messured my voltages and teh gpu voltage was 1.68v and mem was 2.9v so how high can i go with the gpu v with 24/7 use with a artic cooling vga silencer?

[kutteke]

500/415 artifact free !@ 1.99/2.92v
btw its a r9800pro on xt pcb with r360 and 2.5ns hynix ramchips

[Max_87]

Originally Posted by Snowman

i messured my voltages and teh gpu voltage was 1.68v and mem was 2.9v so how high can i go with the gpu v with 24/7 use with a artic cooling vga silencer?

Only you can find out how far your card will go not every 9800pro overclocks the same

[Max_87]

Originally Posted by kutteke

500/415 artifact free !@ 1.99/2.92v
btw its a r9800pro on xt pcb with r360 and 2.5ns hynix ramchips

Congratz that's a very good overclock

[Snowman]

Originally Posted by Max_87

Only you can find out how far your card will go not every 9800pro overclocks the same

i mean how much is safe to run 24/7 because i dont wanna fry my card