mpopkin said:maybe not that much slower, but it is a earlier generation mobile g4 processor so their is a power/performance difference and the margin is larger not in speed but in processing(altivec) performance.
X_Entity said:Hurrah its arrived.
Will post back later with more impressions...
Sir_Giggles said:All LI-ion batteries start to die after they are created. During normal use, you're better keeping the batteries topped up then keeping them discharged, so what you are doing is fine. Apple recommends for long term storage, that you keep the adaptor plugged in, or fully charge the battery before storing it for under 5 months. Over 5 months, they recommend you do a full charge, then remove the battery for long term storage.
Since you are using the machine as a desktop, keeping the battery fully charged is normal and won't affect the performance or expected life expectancy.
Every month you should do a battery calibration, which is basically doing a full charge, then using your PB on batteries until it depletes and goes to sleep automatically, then do another full charge. This basically keeps your battery meter calibrated, especially if you run the batteries alot.
X_Entity said:On a side note I'm very impressed with the ease of use. I've installed wsmanager to give me my virtual desktops ( which I can't live without ) and X11.app so I can run the Gimp. Firefox is now my default browser I almost feel at home. Once I learn the strange key combos to get things done I'll be sorted.
etep said:Any facts to back this claim up? I thought that all new PowerBooks used the 7447A.
scdreger said:well my bto 15" is supposed to arrive tommorrow, it went from shanghai to ancorage, then to indianapolis, I live near Los Angeles why would they send it from alaska almost to the east coast? Now the fedex page says it hasn't left indianapolis because of a "regulatory agency clearance delay." What the hell is that? did anyone else's package go through this? It's starting to look like Im not getting it before the weekend like i was supposed to 🙁 Im still hoping for the best though because fedex hasnt changed the delivery date/time...bizarre!
mpopkin said:The A version runs at speeds exceeding 1.5 ghz, while the Normal version which was seen in the Powerbook Aluminum Rev A was a 1.3 ghz processor underclocked to 1.25 ghz and over clocked to 1.33 ghz. These processors were made under the MPC7447 Processor from Motorola and Currently, the only machines still using the MPC7447 processor in this form are the Powerbook 12", The Powerbook 15"(1.33 Ghz) and the 14" Ibook with a totally earlier gen of this processor.
However the only basic differences other than speed on these processors, is a more powerful implementation of Altivec Technology, Increased Speed(small increase as you can see), and SOI(Silicon on Insulatior Design which increases performance while reducing power requirments and heat production. The MPC7447a is only made in speeds of 1.5 ghz and really cannot be underclocked by the speed needed to make 1.33ghz) While the changes are not great over the 1.33 ghz MPC7447 chip, the 1.5 ghz MPC7447A Chip is faster, lower power +heat, and better altivec performance, but nothing more.
solaris said:I finally got my 15" Powerbook (1.5GHz, 1GB 1 SO-DIMM, 128MB VRAM, 5400RPM) today.
Been playing with it for 4-5 hours and I am so pleased. No dead pixels and no wobble on the desk.
It`s just perfect.... 😀
Solaris
data1ore said:Really? Only the 1.5ghz machines use the 7447A? Strange...I'll check out my friend's 12" PB in a bit to see if it's true...maybe that's why the 12" PB's palmrest gets hotter - mine hardly feels anything beyond warm.
If that's the case those who bought the 'lesser' machines would surely feel ripped off. Hmmmm...*goes to ponder*
mpopkin said:Hey
Actually it is a practice that Apple uses often that i deplore in which they will shortchange lower end models( examples at least recent ones is the base model G5 with less memory, bus speed(between MBoard and G5 and less performance) difference between Powerpc 8600 and 8500 and so on and so on.) Why would Apple underclock a new MPC7447a when they have thousands of 1.33ghz MPC7447's lying around which is the case here, this is just using common sense, it is a fact that the 12" PB and the Base Model 15 PB is using the MPC7447 not the MPC7447A, the performance difference is not terribly great except as stated above with less power, heat and more advance altivec extensions in addition to the 170 mhz speed difference or 167mhz if you are being exact, i would not put off buying a 12" pb because of this, it is still a great computer with a great processor and i have Zero Doubt that Apple has taken care of the heating issue, that means i believe that it has been taken care of, as my computer had zilch problems(cept for the wobble and it is now gone 🙂 ) so buckle up and enjoy the new PBooks
remarq said:ABout the cpu
If you check the developer note from Apple, all new Powerbooks have the MPC7447A with the new feature that besides the BUS has a low power mode...This was not the case for the MPC7447
You have here the 1.33 and 1.5 technical note
http://developer.apple.com/document...acintosh_CPUs-G4/15inchPowerBookG4/index.html
About the 12"
In this page some people did a take apart with the Powerbook 12" and the talk about a 7447A
http://www.kodawarisan.com/ug/PowerBook/21.html
About the 1.5 and 1.33 performance:
I think there is a little improvement about performance in 1.5 but you can
see this here:
http://www.barefeats.com/pb11.html
remarq
data1ore said:EXACTLY remarg! I thought I came across the developer's notes on that and had my friend in Apple tell me the same thing, so I was kinda surprised when mpopkin said his stuff - he sounded believable too lol.
A wild's goose chase after all. 😀
JonGraves said:I'm sorry mpopkin but you are not making any sense at all. You talk about evidence to support the idea that the new models are a mix of MPC7447 and MPC7447A but you do not provide any. The fact that the developers notes do not specify the processor does not constitute evidence for or against your hypothesis.
I am inclined to think that they are all MPC744A since they all require a new 10.3.3 build to boot.
Jon