First 8rda+ Vdd mod casualty...

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Originally posted by Svenn
Sorry to hear about your 8RDA+. I'm about to get one and I'm just wondering, I thought the VDD went to 2.2 in bios? And the Vmem goes to 2.9 in bios? If that's wrong, what are the volts?

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The Vdd is not adjustable in bios, hence the Vmod... Yes, Vmem goes to 2.9.

I'm still running at Vdd of 2.0v. Visually looked at everything and I see no problems. Nothing glowing anyway's.... not to mention, I've only got aircooling on that nbridge... Soon 2 be watercooled..

no pain no gain right???.......:p

Hrm, what does Vcore go to? Maybe that's what I'm thinking about then.

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Originally posted by Svenn
Hrm, what does Vcore go to? Maybe that's what I'm thinking about then.

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2.2v

Be careful guys.

For my board, MBM and USDM underrate the voltage by 0.05-0.07V.

Better re-check using a digital multimeter on the tiny little inductor coil nearby.

hm im on 1.9V -560ohm no problems here...

going counter clock wise is to turn the voltage down right?
and do i have to ground the wire to pin 4 and if not where in my case can i ground it?

please reply asap

You can ground ANYWHERE on the metal case of the computer
inside.

Less resistance= more voltage

More resistance= less voltage

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Originally posted by RichBa5tard
My 8rda+ went up in flames at 1.94v Vdd today... The chip right next to the chipset voltage regulator (1cm to the left) catched fire (no kidding, it was glowing as bright as a LED).

I was going to overclock, so i slowly turned my pot.
mbm5 reported 2.04v, so i turn it back and it said 1.94v, i was aiming for 1.90v, so i turned it a little lower but windows froze.

Rebooting didn't help (motherboard turn itself of immediatly) so I unplugged the grounding of the mod (i didn't solder it on pin 4, but connected it to a fan connector grounding). Rebooted again and the chip right next started to glow... f*ck.

It killed my vidcard as well!!!!! I've yet have to test my friggin' expensive ram (2* Corsair XMS 3200) and CPU (XP2400+). I hope they still work...

By the way, my northbridge was watercooled.

Damnit. :'(

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no luck guy :( , sorry

i currently using 1.8v , i' ve no prob.
when i 've turned my poti too fast (in windows), => windows freeze, i must rebooted , go in bios and see 2.41v for the vdd .nothing killed . no luck for you

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Originally posted by TechTones
You can ground ANYWHERE on the metal case of the computer
inside.

Less resistance= more voltage

More resistance= less voltage

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but which way is more voltyage on the screw clockwise or counter clockwise

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Originally posted by King_of_qb
but which way is more voltyage on the screw clockwise or counter clockwise

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Depends on how you wire the VR.

The best way to experiment is to measure the VR with a DMM before you do the mod. That way you know for sure what to do.

Yes it depends on which legs are used for ground. Really doesn't matter much. If you use a MM, set it for higher resistance and you'll be in safe territory if not under.

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Originally posted by Learn
no luck guy :( , sorry

i currently using 1.8v , i' ve no prob.
when i 've turned my poti too fast (in windows), => windows freeze, i must rebooted , go in bios and see 2.41v for the vdd .nothing killed . no luck for you

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This is what happens most of the time when anyone turns to fast and you don't let the voltage stabilize. Turning to fast will also surge the voltage. Readings from the bios or MBM are slow to show you the changes as you turn a pot with any speed. I strongly suggest turning in very, very small amounts and then wait between each interval adjustment for about 15 seconds so the voltage can then stabilize and be read by a DVM. Once you find the error between bios/mbm and your DVM reading, then I would rely on those readings to help adjust the VDD. Again, be patient and very slow with the adjustments.

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Originally posted by Jeff
Depends on how you wire the VR.

The best way to experiment is to measure the VR with a DMM before you do the mod. That way you know for sure what to do.

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so the hire the # on the MM means the hire the voltage or lower the voltage

Higher the MM reads means lower the voltage, or, higher the resistance lower the voltage.

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Originally posted by Ace-a-Rue
Higher the MM reads means lower the voltage, or, higher the resistance lower the voltage.

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ok will try this in a little bit (thought it was lower and had it set to zero, good thing i asked)

i wanted to know what would happen if the smd grabber fell of the mobo?

Nothing really. The tip retracts so it can't short out anything. You might see a blip on the screen or slight disturbance but that's it. Worst case is you have to reboot. Now, if you're overclocked very high, and it reverts to default right away, you'll get a lock up and have to lower the FSB in the bios and redo the mod.

i have been turning it slowly and still have not seen a change in the vdd voltage does it take a while before it starts to go up when u start at the max resistence?

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Originally posted by King_of_qb
i have been turning it slowly and still have not seen a change in the vdd voltage does it take a while before it starts to go up when u start at the max resistence?

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Nope, mine would ony go up if I disconnected themicro clip from the pin, which may be your problem.

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Originally posted by Bushboy
Nope, mine would ony go up if I disconnected themicro clip from the pin, which may be your problem.

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u meen u would take off the smd grabber and then put it back on?

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Originally posted by King_of_qb
u meen u would take off the smd grabber and then put it back on?

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Yeh I thought it was weird but it kept reading the same resistance no matter how far I turned it...so I took it off (the grabber) and adjusted it, clipped it back on and got more voltage.

ok i will try that in a min first need to turn the pot back down some

What size pot are you using?

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Originally posted by Ace-a-Rue
What size pot are you using?

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1k variable

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Originally posted by Bushboy
Yeh I thought it was weird but it kept reading the same resistance no matter how far I turned it...so I took it off (the grabber) and adjusted it, clipped it back on and got more voltage.

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still no luck

can someone tell me how many turns it took them to get there voltage?