On 2/7/2010 4:30 PM, Jonas Ulrich wrote:
What do you mean "shimming the GPU?"

My guess would be to cut out a shim to go around the non core portion of the GPU. When you bolt the heatsink back down, it will put pressure on top of the chip and sometimes make better electrical connection if there was a flaky connection.

I had a video card that I shimmed at one point and it helped until I moved the case and made things worse. Believe it or not, I pulled the card apart and removed all plastics, baked that puppy in the oven at 375 degrees for 10 minutes to reflow the solder. Let it cool completely, reassembled the card and voila, card still works to this day without the need to be shimmed. If you decide to go the crazy route like I did, be sure to support the board with aluminum foil balls on a cookie sheet. Also remove any plastics and ESPECIALLY heatpipes if there are any. Those can explode with great vigor lol. Also, if you have non solid capacitors, aka standard capacitors, watch them closely as they can burst. When time is up, turn oven off and gently open door to vent heat and let it cool completely for about 30 minutes to an hour.

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