ATI 4850/4870 voltmod thread

[Jim M0rrison]

Hey you guys, is there a voltmod for the Palit/XpertVision HD4870 Dual Sonic 1024MB card? I'm planning to get two of these babies, and plan to voltmod them both.
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It uses a new VRM design and has the same controller (NCP 5388) as the Gainward HD4850 GS. Earlier a few people where talking about this card and seemed anxious to see it released. Any user experience so far?

I came upon this post of Dejanh concerning the same card, but it never got resolved:
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My Powercolor 4870 1GB "pcs" has the same controller (NCP 5388) and I just modded my card successfully. Its actually just a few posts above yours!

I measured 16kOhms between pin19 and ground and soldered a 200kOhm potentiometer between that pin and ground. This worked for me and I can now adjust the GPU voltage.

Look for the resistance to ground from the 19'th pin on the image below:


Good luck!

[DemonEyez]

My Powercolor 4870 1GB "pcs" has the same controller (NCP 5388) and I just modded my card successfully. Its actually just a few posts above yours!

I measured 16kOhms between pin19 and ground and soldered a 200kOhm potentiometer between that pin and ground. This worked for me and I can now adjust the GPU voltage.

Look for the resistance to ground from the 19'th pin on the image below:


Good luck!

Thanx mate for the quick response, that was the info I was looking for. I had a hunch that i could use the same mod as you but just wanted to be sure. I'll post my results once I have my cards delivered to me.