ATI 4850/4870 voltmod thread

[DemonEyez]

I was wondering. I did the vmem mod for the HD4850 with a 100K VR. The lowest voltage I can get is 2.10v , without the mod it's 2.04v After reading that there seems to be a sweet spot at 2.075v i want to redo the mod so i can get a lower voltage. Should I replace the 100K VR with a 50K VR?

[babalouj]

I was wondering. I did the vmem mod for the HD4850 with a 100K VR. The lowest voltage I can get is 2.10v , without the mod it's 2.04v After reading that there seems to be a sweet spot at 2.075v i want to redo the mod so i can get a lower voltage. Should I replace the 100K VR with a 50K VR?

You will need more resistance aka 150K to 200K ohm VR.

[DemonEyez]

You will need more resistance aka 150K to 200K ohm VR.

Thanx for the info! Will pickup a new 200K trimmer this week. Crysis gives me artefacts at 1200MHz and 2.12v.
really want to try less voltage :P