2 Gb Ram?
- Thread starter ksv
- Start date
phatsharpie
Futuristic Robotic Cat
I don't think OS X has any problems with more than 1.5GB of RAM. It's the fact that G4's only have 3 RAM slots, and the biggest RAM modules you can buy right now is 512MB. 512MB x 3 = 1.5GB... That's your ceiling... It's just physcially impossible to have more RAM.
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simX
Unofficial Mac Genius
I personally don't have 2 gigs of RAM, but I'm pretty sure you can use 2 gigs of RAM in OS X. The thing about the Finder only recognizing 1.5 gigs was only in OS 9, because you had to set the memory allocation from the Finder. With OS X, the UNIX underpinnings (which can recognize more than 1.5 gigs of RAM) assign memory usage, so there should be no problem.
Oh, by the way, it's "Sawtooth".
Did the first-generation G4 (codename "Yikes!") have 4 slots?
Oh, by the way, it's "Sawtooth".
Did the first-generation G4 (codename "Yikes!") have 4 slots?
ksv
web developer
Originally posted by simX
Oh, by the way, it's "Sawtooth".
Did the first-generation G4 (codename "Yikes!") have 4 slots?
Yeah, I often miss some letters when I type too fast on an Apple Pro Keyboard by some reason
Ah, yep, both the Yikes! G4 and B&W G3s had 4 slots, too. The 9600 had 12
actualy it can only take 1.5 because of the 32 bit cpu adressing, i read it somewere yesterday in a magazine at borders.... because of the 32 G4 it only alows 1.5 for some reason.... 64 bit prosesors (hooopfuly g5) will alow TERABYTES of ram, not that that would be over doing it at all . the problem with moving to 64 bit is that almost all apps would need to be re tooled to handle it. (g5 should be 32 back compadible)
. the problem with moving to 64 bit is that almost all apps would need to be re tooled to handle it. (g5 should be 32 back compadible)
ulrik
Registered
it does not only depend on the 32 bit of the G4, it depends on it's instruction set. There are 32 bit processors which can handle several gigabytes of RAM (Xeon. f.e.).
But the pointers used to adress the RAM are too short to adress any further than 1,5 gigabyte. You could change the instruction set - of course - but I am not a CPU designer so I don't know what a huge task that would be (you'd have to increase the register which holds the data pointers for the RAM addressing), but as it was already pointed out, the G5 will have much larger registers (simply because he can know operate on 64 bit per cycle) and thus the data pointer can reach deeper into the RAM to address areas outside of the current 1,5 gig limit.
But the pointers used to adress the RAM are too short to adress any further than 1,5 gigabyte. You could change the instruction set - of course - but I am not a CPU designer so I don't know what a huge task that would be (you'd have to increase the register which holds the data pointers for the RAM addressing), but as it was already pointed out, the G5 will have much larger registers (simply because he can know operate on 64 bit per cycle) and thus the data pointer can reach deeper into the RAM to address areas outside of the current 1,5 gig limit.