They weren't overly popular IIRC, besides, all they did was overclock the processor.Wow, I wonder, is there anywhere I can get one with the Daystar upgrade? I checked all over eBay, and could not find one.
They weren't overly popular IIRC, besides, all they did was overclock the processor.
Here's a thread that has a lot of details about how to overclock various Macs (seemingly concentrating mainly on PowerBooks) by moving jumpers.Well then, is there any way for me to do that myself? I thought it was impossible to overclock a PowerBook, you can fake the frequency via software or the OpenFirmware, but that does not help performance any.
They weren't overly popular IIRC, besides, all they did was overclock the processor.
Doesn't the DLSD PowerBook have a 7448? I was pretty sure it does... And I was only thinking of the Daystar upgrades for DLSD PowerBook, opposed to earlier 7447a based AlBooks. And I'm pretty sure the 7448 processor can be overclocked by moving a few jumpers. I remember a friend I had claiming he had overclocked his PowerBook using that method up to 2.8GHz!Daystar completely replaced the processor with a 7448 vs. the 7447A that shipped in the DLSD(and most other AlBooks). It's not just simply overclocking it, and the swap is significant as the TDP of the 7448 is-as I recall-about half that of the 7447A.
The computer had to go to them for the upgrade.
Doesn't the DLSD PowerBook have a 7448? I was pretty sure it does... And I was only thinking of the Daystar upgrades for DLSD PowerBook, opposed to earlier 7447a based AlBooks.
I'm finding a lot of conflicting information, EveryMac says it "actually has a PowerPC 7448 (G4) processor as required to interface with the PC2-4200 DDR SDRAM"; various sources online say both 7447 and 7448, and MacTracker says it has a 7447b (this sounds most likely).No, no Apple computer shipped with a 7448. They were only available as aftermarket upgrades.
I've seen the die markings on the DLSD Powerbook, they are a 7447 variant.
"The A1139 was the only one that had the 7448A. Funny enough, Apple's own Internal Engineering team made an "Oops" and screwed up the Design datasheets. Obviously this was later corrected before production, but it appears that the Marketing department didn't get the memo. Therefore the A1139 will always live in infamy (in my mind) as the machine that was always labeled as the 7447A w/ DDR2. Which technically isn't possible."
snip
Notes: This was done on an A1139 Bozeman EVT Powerbook G4. No voltage modification performed. Processor is NOT a 7447A, this model has the 90nm 7448A CPU. I'm expecting 2.3Ghz if a Voltage modification was performed.
Question: Are G4 CPU upgrades plug and play, instantly identified by the OS and correctly reported by System Profiler or along with the hardware is there a software/driver installation?
Also, IIRC, isn't 1.7GHz the highest a 7447A can be overclocked to?
In any case, as I said earlier the cache size is a giveaway. If it has L3, the processor is a 745x. If it has 1mb of L2, it's a 7448. The L3 thing is iffy as a lot of 745x processors didn't have it, and I've also found a quirk in Quicksilvers where the L3 doesn't generally show up if the computer didn't originally ship with it. As far as I know, though, the 1mb L2 is an absolute positive/negative test for a 7448. 1mb L2=7448, less than 1mb=not 7448
Afternoon all, me releasing this thread/video has seemed to really kick the hornets nest more than I had anticipated. I noticed a lot of you think I'm playing some ruse here with a 7447A, Which I can totally understand but this machine is indeed a 7448 based chip chugging away at 2Ghz on the stock 1.3v. There is no way you'd be sitting cinebench stable at 1.3v on a 7447, but regardless I do indeed have factual proof this is a 7448. Personally I really don't want to tear this thing down to ribbons to take a die shot, but if I must that can be allocated when i find the time.
In addition I do have Apples very own Internal Engineering documentation (Both revisions) (And board designs for manufacturing) regarding the story I posted about. But I don't know if posting them online is going to get me into any kind of Intellectual Property problems.
As of right now I'm trying to get the machine back up after screwing with the FSB to run it back at 200Mhz. Turns out that was a bad idea as their is a bit to be set that makes the FSB/PLL chips take in the configuration table as read only. So now I've to figure out how to set that back to stock. None the less I'm more than happy to provide any details that may be needed to prove this is indeed the truth.
-Thanks.
Afternoon all, me releasing this thread/video has seemed to really kick the hornets nest more than I had anticipated. I noticed a lot of you think I'm playing some ruse here with a 7447A, Which I can totally understand but this machine is indeed a 7448 based chip chugging away at 2Ghz on the stock 1.3v. There is no way you'd be sitting cinebench stable at 1.3v on a 7447, but regardless I do indeed have factual proof this is a 7448. Personally I really don't want to tear this thing down to ribbons to take a die shot, but if I must that can be allocated when i find the time.
In addition I do have Apples very own Internal Engineering documentation (Both revisions) (And board designs for manufacturing) regarding the story I posted about. But I don't know if posting them online is going to get me into any kind of Intellectual Property problems.
As of right now I'm trying to get the machine back up after screwing with the FSB to run it back at 200Mhz. Turns out that was a bad idea as their is a bit to be set that makes the FSB/PLL chips take in the configuration table as read only. So now I've to figure out how to set that back to stock. None the less I'm more than happy to provide any details that may be needed to prove this is indeed the truth.
-Thanks.
I was watching your video when I noticed at the 52 second mark you mention that the "7448" has a "platform controller hub" to allow DDR2 ram to work. I'd like to bring to the attention of readers that in a G4 system the CPU in no way handles or has anything to do with memory support or controlling memory directly.