I am not so sure of this one. I'll say that 2 MB of L3 cache would have been necessary to make a difference when the L2 cache is raised to 512 K. Intel just release the P4 EE, wich features a 2 MB L3 cache.
But's i'll guess that a 1 mb L3 cache won't make a big difference.
Well, that debate will have to occur somewhere else, since it's hard to do more than guess with the information we have. I'm just rationalizing backward from the fact that L3 cache appears nowhere, and that Mot seemed to think that Apple was using 7447s. Both companies have made mistakes in their literatures, so nothing here is definitive. Someone will have to take a PB apart - so I'm hoping for a link to some Japanese site before long.
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For the type of processor, i still believe they use the 7457. Apple never used the 744* line in his products, even if they don't used the L3 cache technology. I think they don't want to change the design of the pins connection and they want also to have options in the future. Adding some L3 cache in the future, may be an easy way to improve their computer without doing much re-engeenering.
What is the future? The 7457/7447 is the last CPU in the G4 line, as far as anyone knows, and you don't need L3 if you've got efficient L1 and L2 and a fast pipe to system RAM. Perhaps the 7447 is preparing for the future.
NOT Motorola. I hope. Moto looks to be in harvest mode for almost all operations. They have had 3 years to make a better G4 and what did they come up with???? Squat. Motorola needs a SERIOUS change in leadership and attitude before it can even begin to consider thinking about becoming copetative. Hopefully IBM will pick up the slack.
Motorola needs to remember that you cant do business sitting on your a$$ and you cant make $$ without spending $$.
Comments
It's not the first time old information has been left in.
Originally posted by Powerdoc
I am not so sure of this one. I'll say that 2 MB of L3 cache would have been necessary to make a difference when the L2 cache is raised to 512 K. Intel just release the P4 EE, wich features a 2 MB L3 cache.
But's i'll guess that a 1 mb L3 cache won't make a big difference.
Well, that debate will have to occur somewhere else, since it's hard to do more than guess with the information we have. I'm just rationalizing backward from the fact that L3 cache appears nowhere, and that Mot seemed to think that Apple was using 7447s. Both companies have made mistakes in their literatures, so nothing here is definitive. Someone will have to take a PB apart - so I'm hoping for a link to some Japanese site before long.
For the type of processor, i still believe they use the 7457. Apple never used the 744* line in his products, even if they don't used the L3 cache technology. I think they don't want to change the design of the pins connection and they want also to have options in the future. Adding some L3 cache in the future, may be an easy way to improve their computer without doing much re-engeenering.
What is the future? The 7457/7447 is the last CPU in the G4 line, as far as anyone knows, and you don't need L3 if you've got efficient L1 and L2 and a fast pipe to system RAM. Perhaps the 7447 is preparing for the future.
Originally posted by Amorph
What is the future?
NOT Motorola. I hope. Moto looks to be in harvest mode for almost all operations. They have had 3 years to make a better G4 and what did they come up with???? Squat. Motorola needs a SERIOUS change in leadership and attitude before it can even begin to consider thinking about becoming copetative. Hopefully IBM will pick up the slack.
Motorola needs to remember that you cant do business sitting on your a$$ and you cant make $$ without spending $$.