macinbot
Well-known member
I need help figuring out which jumpers / resistors to adjust for overclocking the G4 Gigabit DP processor card.
I am slowly chugging along with my G4 Gigabit Budget Upgrade project. I want to overclock its G4 500MHz DP card to 600MHz. From this post on XLR8YourMac, there are two, or maybe three, areas with jumpers that set the clock multiplier.
https://www.xlr8yourmac.com/G4ZONE/sawtooth/Dual_G4_550_mods.html
To me, it's unclear in the post if the third callout at the bottom of the card (near the connector pins) is supposed to be changed as well.
So I'm unsure if it's just the two sections: The jumpers in multiplier section on the front of the card, and then the jumpers near the processors on the back of the card?
Or is it all three sections that need to be adjusted? And if so, what would be the configuration in that third section on the bottom near the connector pins? The jumper layout is different, with only three pads (instead of four) to adjust the jumpers (see my photos below).
From the post, it looks like the jumpers for the multiplier section in the front, and two sections on the back are flipped (though I suppose it depends on your orientation). And from the post, here is the multiplier chart:
So, what I'm getting from the post is that all the jumper sections need to obviously have their jumper configuration changed. And the config goes for the 500MHZ DP goes from this:
And changes to this for 600MHZ overclock:
As a guy who hasn't soldered in a very long time, and who absolutely does not excel at SMD level soldering, I want to make sure that removing the resistors and running straight solder trace across is fine. I believe that the resistors are null value and just act as jumpers.
And being that guy who hasn't soldered in awhile, recommendations for iron temp when performing this kind of work? (FYI: I have flux and a desoldering braid)
Three sections of the processor card in question...
Front bottom of processor card:
Back Processor Card near processors:
Back Bottom Right near connector pins:
I am slowly chugging along with my G4 Gigabit Budget Upgrade project. I want to overclock its G4 500MHz DP card to 600MHz. From this post on XLR8YourMac, there are two, or maybe three, areas with jumpers that set the clock multiplier.
https://www.xlr8yourmac.com/G4ZONE/sawtooth/Dual_G4_550_mods.html
To me, it's unclear in the post if the third callout at the bottom of the card (near the connector pins) is supposed to be changed as well.
So I'm unsure if it's just the two sections: The jumpers in multiplier section on the front of the card, and then the jumpers near the processors on the back of the card?
Or is it all three sections that need to be adjusted? And if so, what would be the configuration in that third section on the bottom near the connector pins? The jumper layout is different, with only three pads (instead of four) to adjust the jumpers (see my photos below).
From the post, it looks like the jumpers for the multiplier section in the front, and two sections on the back are flipped (though I suppose it depends on your orientation). And from the post, here is the multiplier chart:
So, what I'm getting from the post is that all the jumper sections need to obviously have their jumper configuration changed. And the config goes for the 500MHZ DP goes from this:
- OPEN
- JUMPER
- OPEN
- OPEN
And changes to this for 600MHZ overclock:
- OPEN
- OPEN
- JUMPER
- OPEN
As a guy who hasn't soldered in a very long time, and who absolutely does not excel at SMD level soldering, I want to make sure that removing the resistors and running straight solder trace across is fine. I believe that the resistors are null value and just act as jumpers.
And being that guy who hasn't soldered in awhile, recommendations for iron temp when performing this kind of work? (FYI: I have flux and a desoldering braid)
Three sections of the processor card in question...
Front bottom of processor card:
Back Processor Card near processors:
Back Bottom Right near connector pins: