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does 8G RAM works on OSX 10.5.7 and uMBP 470?

C

chrix

macrumors newbie
Original poster
I'm just curious, does the 10.5.7 release solved the issue that uMBP 470 can't support 8G RAM?
 
chrix said:
I'm just curious, does the 10.5.7 release solved the issue that uMBP 470 can't support 8G RAM?
Click to expand...

What's uMBP 470? Is that the older one? If so, it's a hardware issue, so I don't see how a software update can fix that.
 
sorry for the confusing, but MB470 and MB471 and even 17 inch MBPs are using the same chipset, so I guess it was just SW/Firmware limitation
 
chrix said:
sorry for the confusing, but MB470 and MB471 and even 17 inch MBPs are using the same chipset, so I guess it was just SW/Firmware limitation
Click to expand...

Software limitation imposed by Apple. The hardware can support 8 GB, Apple just doesn't want to add that support, only for the 17" model.
 
jav6454 said:
Apple screwed up, it happens.
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what i think happened is instead of creating different boards for the high end 15" and 17" they just the same one for both. but the 2.4Ghz is still the old chipset hence half the 3MB instead of 6MB. this is probably why it doesnt support the 8GB of RAM.
 
ViciousShadow21 said:
what i think happened is instead of creating different boards for the high end 15" and 17" they just the same one for both. but the 2.4Ghz is still the old chipset hence half the 3MB instead of 6MB. this is probably why it doesnt support the 8GB of RAM.
Click to expand...

It has nothing to do with the amount of L2 Cache in the processor. All Intel C2D P8X00 series processors can use up to 8GB of RAM provided the chipset allows it. Not sure what Apple has done to block that, but if you were to pair the P8600 with a PM45 chipset, it would support 8GB (maybe even 16GB) of DDR2/DDR3.
 
Be honest with your self. Do you really NEED a whole 8 gigs of RAM? Sure it would be nice, but I doubt you would regularly max it out. I'm just waiting for the prices to come down so that I can get 6 gigs.
 
Sneakz said:
It has nothing to do with the amount of L2 Cache in the processor. All Intel C2D P8X00 series processors can use up to 8GB of RAM provided the chipset allows it. Not sure what Apple has done to block that, but if you were to pair the P8600 with a PM45 chipset, it would support 8GB (maybe even 16GB) of DDR2/DDR3.
Click to expand...

i know that the cache size has nothing to do with the amount of RAM. i was using that spec to compare the two different logic boards.
 
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