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Hmm
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Forum Regular
Join Date: Mar 2003
Location: Minneapolis
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Today I bought a stick of 512mb Crucial DDR2700 memory, and installed it into my G4 iBook, but under my system profiler it lists this:
Memory: 640mb
Bus Speed: 133mhz
Is it just me, or shouldnt it be 266mhz? Also, I thought in the first window that pops up from Finder for 'about this mac' said the memory type aswell under the processor, mine just says 640 MB.
Is it just me, or is something amiss?
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Addicted to MacNN
Join Date: Jul 2002
Location: Minnesota - Twins Territory
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apple's website says 266mhz....did it say 133mhz when you ordered it from crucial?
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"I'm for anything that gets you through the night, be it prayer, tranquilizers, or a bottle of Jack Daniel's."
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Fresh-Faced Recruit
Join Date: Apr 2003
Location: Seattle, WA
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Originally posted by teknik:
Today I bought a stick of 512mb Crucial DDR2700 memory, and installed it into my G4 iBook, but under my system profiler it lists this:
Memory: 640mb
Bus Speed: 133mhz
Is it just me, or shouldnt it be 266mhz? Also, I thought in the first window that pops up from Finder for 'about this mac' said the memory type aswell under the processor, mine just says 640 MB.
Is it just me, or is something amiss?
I had Apple install the max RAM when I ordered my G4 iBook, and I'm getting exactly the same figures. 133Mhz bus speed (as it should be per Apple's listed specs for the G4 iBook), 640MB memory. I think nothing is amiss.
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20" iMac G5 2GB RAM, 933Mhz 14" iBook G4 640MB RAM.
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Mac Elite
Join Date: Dec 1999
Location: NYC
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Administrator  Join Date: Apr 2001
Location: San Antonio TX USA
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Note that the "DDR" means "double data rate." With a 133MHz clock, you get 266MHz performance.
I don't think it's any more confusing than the fact that DDR RAM is called "PC2700" or something like that.
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Glenn -----
OTR/L, MOT, Tx
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Addicted to MacNN
Join Date: Jul 2002
Location: Minnesota - Twins Territory
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256MB of PC2100 (266MHz) DDR SDRAM (128MB built-in and 128MB in SO-DIMM slot) with support for up to 640MB
thats where i got 266....133 is right on the bus speed...i was thinking ram
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"I'm for anything that gets you through the night, be it prayer, tranquilizers, or a bottle of Jack Daniel's."
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Mac Enthusiast
Join Date: Nov 2001
Location: California
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Originally posted by nredman:
256MB of PC2100 (266MHz) DDR SDRAM (128MB built-in and 128MB in SO-DIMM slot) with support for up to 640MB
thats where i got 266....133 is right on the bus speed...i was thinking ram
It's kinda the same thing. DDR (double data rate) Ram running at 133 MHz will give SDR (single data rate) 266 MHz "performance" as GHPorter brought out. Some folks might call DDR 133 MHz, 266 MHz, but the clock for the bus only runs at 133 Million cycles per second with data being sent at the beggining and (this is importand) ending of each cycle.
Long story short, if it's working in your iBook, it must be the right type.
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12" Powerbook 1.5GHz/SuperDrive, 1.25GB Ram, 80GB HD, Airport Extreme, Mac OS X 10.4.11 Tiger
iBook (Late 2001)600MHz/Combo, 640MB RAM, 20GB HD, Airport, Mac OS X 10.3.9 Panther — web server
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