This is the resistor you will use the 2b pencil on following the steps we went through above. VCore VmodUsing Image 2 as our guide locate the the resistor R1597 that is under the pencil labeled VGPU. Keep in mind that if you want your card to last awhile don't get greedy. 04 Volts so again that's around 15 Ohms you need to reduce your resistor. A 10k variable resistor will give you around. 06 V to the reading that you saved for future reference, for example the VCore reading of 1.39 V your voltage should now be around 1.43 V - 1.45 V. If you go by the rule of 15k Ohms equals roughly.
400k obviously it's a 18k ohm drop in resistance. For example if your starting Ohm reading is. Using the number you've written down subtract the new reading. Do a couple swipes then check again with the meter.
Then gently run your pencil along the side of the resistor from one end to the other. You'll need to measure the resistance in Ohms first, by placing the black lead on one side and the red lead on the other side of the resistor, write it down it's our starting Ohm reading. Basically what we are trying to do is use our 2b pencil to reduce resistance on the selected resistor. Yes, at this point you should be reading from a printed document. Pencil TimeTime to shut down the system and take out the card, your work area should be static free. Write your VDDQ number down for, you guessed it, future reference. Your meter should be reading around 2.08v. Once more with the same steps as before place the black lead on ground carefully placing the red lead on the left side of C215 (you're upsidedown from the pic facing the card). Right below the VDD capacitor, closer view in Image 3. Find the measure point in Image 1, green arrow pointing to capacitor C215.
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Next measurement we'll check before we start the mod will be VDDQ. Write that VMem number down for future reference. Your meter should be reading around 2.00v. Place the black lead on ground carefully placing the red lead on left side of C213 (you're upsidedown from the pic facing the card). With the same steps we used in the previous measure point. A closer view in Image 3, it's the top capacitor in the top right hand corner. Again in Image 1 locate the green arrow pointing to our measure point, over to the left of the card labeled C213. There is not a measure point for the IGPU Vmod that I'm aware of at this time.įor the time being lets move on to the VDD (VMem) measure point. Write that VCore number down for future reference. Your meter should be reading around 1.39v, cards vary from manufacture to manufacture. Carefully place the red lead on the top side of capacitor C60 (you're upsidedown from the pic facing the card). Important when touching card with a meter lead that you don't accidently ground something out. Set your meter to DCV 20 V before placing the black lead of your meter on the screw holding in the video card, this is ground. Now with the system running and the side cover off visually inspect the area to first locate the capacitor and making sure there isn't anything in the way. Starting with Image 1 locate the green arrow pointing to the capacitor in the top right hand corner labeled C60. So grab a pencil and paper (should already have a pencil) we're going to write down our starting voltages. Try the VCore vmod first then move on to the next one if you feel you need to.
I'd like to note that you don't need to do all of the next steps if you're not doing all of the vmods. To check the voltage for the VCore and VMem starting measurements set the multimeter to DCV 20v and to check Ohm resistance you'll set the meter to Ohms 2k or 20k depending on the resistor we're working with. The second to check the resistance in Ohms of the resistors we're using our 2b pencil on to safely lower their resistance to raise the voltage. One to check the voltage before and after we make our changes. Getting StartedBefore we get down to work, lets run through the multimeter to make sure we're on the same page. If it doesn't bring it back up to where I want it, I'll wet the other side of the Qtip with Alcohol to clean and restart. If I've brought the resistance down to low, I'll dab the dry end on the resistor a couple of times and recheck the Ohm reading. I like to use Alcohol (99% Isopropyl Alcohol) and a Qtip to clean the graphite off the resistor.