ATI 4870X2 voltmod thread

[jimmyz]

The issue is there's no feasible soldering point on the frontside. The mod itself should be "50ohm VR from pin#9-to-ground" as stated earlier?

I should have been more clear. I have the spots to check on the backside. Thanks to W1zzards excellent pics. Visit Tech Power-up and check out his revierw. He generally includes Hi-res pics for us modders. http://www.techpowerup.com/reviews/S...4870_X2/3.html

I do not have a card here so please test before modding. I am not responsible if your card is damaged, please only test if you are comfortable with the risk. Any results or questions I will check in later tonight.

Check from the mod points indicated to ground. multi set to low range. the resistance should be around 2.5 ohm .Voltage read points, of course need to be checked while card is functioning.

Ignore the part about Elmors reading in the pic. I thought he said what resistance , he stated 50 ohm to ground which is for a resistance of roughly 2.25 ohm (resistance X 20 = size of VR recommended) so 20 x 2.25 = 45 ohm so a fifty is fine.
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If the resistance is within spec these should be the mod points. as Elmor stated it should be a 50 ohm VR. PLEASE test before modding, these may not be the proper points!!!