Some time ago I sourced a working Cisco router that has a 1.7 GHz 7448 - to be precise, SC7448HX1700LD.
I’ve been thinking of a way to use this in one of my G4 Cube’s.
I have a NewerTech MAXSpeed single 1.6 GHz 7447a card, which was part of their 7447a/7448 range.
This might be a suitable base to get the 7448 swapped onto. It has 744x etched on the card which suggests they used a single card design for all versions - single/dual/7447a/7448. It has a jumper block for the speed. I think I read that the SC7448’s aren’t really suited to OC’ing but I’m not really too fussed. Even a 1.7 GHz 7448 would be a great step up for my Cube.
Now where I am stumped is the voltage. I understand I need to get this down to 1.4V max.
On the card, there is a hidden (under the heat sink) jumper block (SW3) which I think might be for this purpose. I looked up datasheets for the IC’s on the card until I found the one that is related to voltage regulation…
I'm far from an expert on these kind of things, but it doesn’t look like the simpler ones on the factory Apple cards, to trace the related resistors/jumpers.
I did try to contact OWC/NewerTech to see if they’d give any secrets away for an old, legacy card. They were happy to help, but had no such documentation.
So I’m pretty stumped at this point and bit out of my knowledge zone.
Any experts who can chime in with some tips please? It would be much appreciated..
Or maybe if I’m lucky, any photos of the 7448 version of this card for comparison?
I’ve been thinking of a way to use this in one of my G4 Cube’s.
I have a NewerTech MAXSpeed single 1.6 GHz 7447a card, which was part of their 7447a/7448 range.
This might be a suitable base to get the 7448 swapped onto. It has 744x etched on the card which suggests they used a single card design for all versions - single/dual/7447a/7448. It has a jumper block for the speed. I think I read that the SC7448’s aren’t really suited to OC’ing but I’m not really too fussed. Even a 1.7 GHz 7448 would be a great step up for my Cube.
Now where I am stumped is the voltage. I understand I need to get this down to 1.4V max.
On the card, there is a hidden (under the heat sink) jumper block (SW3) which I think might be for this purpose. I looked up datasheets for the IC’s on the card until I found the one that is related to voltage regulation…
I'm far from an expert on these kind of things, but it doesn’t look like the simpler ones on the factory Apple cards, to trace the related resistors/jumpers.
I did try to contact OWC/NewerTech to see if they’d give any secrets away for an old, legacy card. They were happy to help, but had no such documentation.
So I’m pretty stumped at this point and bit out of my knowledge zone.
Any experts who can chime in with some tips please? It would be much appreciated..
Or maybe if I’m lucky, any photos of the 7448 version of this card for comparison?
Attachments
Last edited:
