Sawtooth ATX PSU conversion

[max1zzz]

The G4 was introduced in mid 1999, ADC was added to G4s in mid 2000.

Sawtooth, that this thread is about, is first gen G4.

Actually if I'm being a little bit pedantic Yikes is actually the first gen G4 (though it is essentially just a re cased B/W G3 with a G4 CPU card)

But either way the Sawtooth doesn't have ADC support so no +28V rail is needed. I'm pretty sure the DA dose have ADC support which is where some people get confused as it looks almost identical to the sawtooth

 

[Phipli]

Actually if I'm being a little bit pedantic Yikes is actually the first gen G4 (though it is essentially just a re cased B/W G3 with a G4 CPU card)

But either way the Sawtooth doesn't have ADC support so no +28V rail is needed. I'm pretty sure the DA dose have ADC support which is where some people get confused as it looks almost identical to the sawtooth

Hum, but Yikes and Sawtooth were release concurrently. I would call them both first gen G4s.

 

[max1zzz]

Hum, but Yikes and Sawtooth were release concurrently. I would call them both first gen G4s.

I was always under the impression that Yikes was released first as the Sawtooth hardware wasn't ready, could be wrong though

 

[Renegade]

IIRC, both models were announced at the same time but the Yikes shipped first.

 

[Phipli]

I was always under the impression that Yikes was released first as the Sawtooth hardware wasn't ready, could be wrong though

Nah, both released at the same time, Aug 31st 1999.

Edit - can't confirm what Renegade said easily. But they were announced together.

 

[GRudolf94]

Going back to the origin of this thread, I have, at times, fit boards from new PSUs into old PSU cases where the screw holes happened to coincide, but that was a side effect of having a large pile of junk. When feasible, I just fix the stocker.

A PSU with a 120mm fan, does that end up facing the open air on a Mac, or the case panel? Having a hard time remembering which side the fan sits on with regards to the rear screws, and how that is on a G4.

 

[3lectr1cPPC]

I was always under the impression that Yikes was released first as the Sawtooth hardware wasn't ready, could be wrong though

Pretty sure it was that the fastest sawtooth was delayed.

 

[Phipli]

Pretty sure it was that the fastest sawtooth was delayed.

They dropped all the speeds by 50MHz I think, due to yield issues.

 

[3lectr1cPPC]

Something like that’s what I remember.

 

[CC_333]

They dropped all the speeds by 50MHz I think, due to yield issues.

And in so doing, they kept the prices of each respective model the same, which caused some controversy.

c

 

[pizzigri]

In regards to size, I found that using SFX psu’s allows for a lot of leeway in internal placement when rebuilding mac power supplies. there are quitr powerful ones too,