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FACE
03-27-2010, 05:46 AM
Hey guys... I'm having a ton of trouble with soft voltage tweaks on my newly acquired 2900xt and his 3870. The drivers go nutz, and I've tried several.

What I am looking for are the guides to get some trimmers on these boards, but the existing guides are old, and the pics I need are not there anymore. I'm thinking the pencil mods are fail, so I'm soldering on these.

Thanks in advance. :Hi:
Neuromancer
03-27-2010, 05:54 AM
2900xt
http://www.blazingpc.com/forum/showthread.php/ati_2900xt_voltage_mod-7603/index.html?

3870 pencil mod
http://forums.techpowerup.com/showthread.php?t=48544

3850/70 hardmod

http://www.xtremesystems.org/forums/showthread.php?t=166623

PIctures work in all 3 threads :)
Neuromancer
03-27-2010, 05:58 AM
You tried Riva, ATI tray tool and ATITool?
FACE
03-27-2010, 06:05 AM
I tried them all bro. even tried amd gpu tool. These cards just seem to hate soft volts

I guess my browser needed restarted, because the pics work now.... an hour ago I got buttkiss.
FACE
03-28-2010, 07:29 AM
The pic for vgpu mod is missing for the 2900xt. That's the most important one.... doh!
HITandRUN
03-28-2010, 08:25 AM
The pic for vgpu mod is missing for the 2900xt. That's the most important one.... doh!

What are the markings on the vGPU voltage driver IC? The picture is not too good. Do we have the data sheet for it?
Neuromancer
03-28-2010, 08:42 AM
2900xt vmod by shammy

http://ocxtreme.org/forumenus/showthread.php?t=863
FACE
03-28-2010, 10:30 AM
2900xt vmod by shammy

http://ocxtreme.org/forumenus/showthread.php?t=863

Bookmarked, so if I am reading it right, on the vmem mod, i just connect the two to each other, or both to ground? I believe the points are shorted, but I ask our gurus to clarify before I noob something.... :shock:
HITandRUN
03-28-2010, 10:58 AM
Bookmarked, so if I am reading it right, on the vmem mod, i just connect the two to each other, or both to ground? I believe the points are shorted, but I ask our gurus to clarify before I noob something.... :shock:

Looks like this is what he wants you to do. A little different from all the Vmods I have done in the past. In most cases you go from the FB leg on the voltage IC to ground.