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Macbook Pro RAM Types?
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Senior User
Join Date: Mar 2004
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I'm going to Fry's to see if they carry the new PC2-5300 667mhz 1gb ram sticks for the mac book pro
Everyone has slower 200pin sticks. Is it true the slower ram will work in the macbook pro? I absolutely have to have RAM before 9am tomorrow moring so I was thinking of getting some cheepier ram 4200 200pin or something as long as it works for a day until i get the faster ram.
I hope fry's has the faster pc2-5300 ram (i should buy 2, 1gb sticks to get 2gb of ram in my macbook pro correct?)
Thanks for the help in advance.
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Moderator  Join Date: Oct 2001
Location: San Jose, CA
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A recent post discussed this that I can't find at the moment, but if a machine is rated for a certain RAM speed, you can't get slower memory to work with it. You can only do that if even higher speeds are available. But even then, the "slow" speed is the rated speed for the machine. For example, you can use DDR333 in a machine rated for DDR266, but the RAM will run at the slower DDR266 speed. There's no such thing as DDR133, but if there was, it would not work. It would be too slow.
Steve
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Dedicated MacNNer
Join Date: Feb 2006
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I had a 1 gig 4200 DDR2 in my Gateway (sold for the MBP) and figured WTH I'll try in the MBP, works perfect now I have 2 gigs not a problem at all.
BTW it is a kingston chip.
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Senior User
Join Date: Mar 2004
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Yeah I was told the Intel boards support any speed of SO-DIMM 200pin RAM.
However I just went to Fry's in San Jose. Fry's currently only has one carry of PC5300 200pin ram. It's CORSAIR.
So I bought 2, 1GB CORSAIR DDR 200PIN So-DIMMs. If any wants to know the fry's part number is VS1GSD667D2
It's so new it's not in the Fry's computer they had to write a manual ticket. Total for 2gb of ram was $259 which is a great price.
Where can I download the guide to install this? The bottom RAM will be easy, but the other one goes on top right? If 512MB is built in then I sould have 2.5gb? Or it appears that the 512mb is occupying the type slot?
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Posting Junkie
Join Date: Oct 2005
Location: Houston, TX
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Most of Intel's chipsets will support a number of RAM speeds; even the boards that supported DDR400 (and ran it at DDR400 speeds) would also support DDR333 and DDR266 (with the obvious speed penalty).
945PM, used in the Intel Macs (mini uses 945GM), supports DDR2-400 (PC2-3200), DDR2-533 (PC2-4200), and DDR2-667 (PC2-5300). I don't know if Apple has done anything to remove that support, but I doubt they have.
It also supports asymmetric dual-channel, which isn't something I've heard of before; sounds like you can get dual-channel performance with different sized DIMMs.
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Senior User
Join Date: Mar 2004
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Yeah supporting any RAM type is a really nice feature. I'm glad I got the more expensive RAM though...
Hopefully it will help. I'm going to be using Adobe Creative Suite, Textmate, Transmit....
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Moderator Join Date: Oct 2001
Location: San Jose, CA
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I guess I need to keep up with the times...
Steve
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Grizzled Veteran
Join Date: Sep 2001
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Originally Posted by mduell
Most of Intel's chipsets will support a number of RAM speeds; even the boards that supported DDR400 (and ran it at DDR400 speeds) would also support DDR333 and DDR266 (with the obvious speed penalty).
945PM, used in the Intel Macs (mini uses 945GM), supports DDR2-400 (PC2-3200), DDR2-533 (PC2-4200), and DDR2-667 (PC2-5300). I don't know if Apple has done anything to remove that support, but I doubt they have.
It also supports asymmetric dual-channel, which isn't something I've heard of before; sounds like you can get dual-channel performance with different sized DIMMs.
How does this work? Does it slow the system bus down to match the RAM? What's the performance hit?
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MacBook Pro 15" -- 2.2Ghz, 4GB, 200GB 7200rpm
iPod Nano 2G -- 8GB
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Senior User
Join Date: Jan 2003
Location: Newport Beach, CA
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Originally Posted by inkhead
Yeah I was told the Intel boards support any speed of SO-DIMM 200pin RAM.
However I just went to Fry's in San Jose. Fry's currently only has one carry of PC5300 200pin ram. It's CORSAIR.
So I bought 2, 1GB CORSAIR DDR 200PIN So-DIMMs. If any wants to know the fry's part number is VS1GSD667D2
It's so new it's not in the Fry's computer they had to write a manual ticket. Total for 2gb of ram was $259 which is a great price.
Where can I download the guide to install this? The bottom RAM will be easy, but the other one goes on top right? If 512MB is built in then I sould have 2.5gb? Or it appears that the 512mb is occupying the type slot?
Hi Inkhead,
I bought the same Corsair ram from Fry's here in Orange County. I paid with tax $119. It was in the computer, but I had been in two days prior and they did not have it. It's working just fine. I only bought one stick for mine for a total of 2GB. Rosetta is no problem with the extra ram.
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MacBook Air, Mac OS X (10.7), 1.6 GHz, Core i5, 4GB 1333 MHz DDR3, 128 GB SSD, 24" LED ACD, 1TB Time Capsule (late 2009), IOS4 ATV, 16GB iPhone 4
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Posting Junkie
Join Date: Oct 2005
Location: Houston, TX
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Originally Posted by John123
How does this work? Does it slow the system bus down to match the RAM? What's the performance hit?
The FSB to the CPU stays at 667Mhz, but the memory bus drops to match whatever RAM you put in.
Performance hit depends on what you're doing; may be trivial or significant.
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Fresh-Faced Recruit
Join Date: Mar 2006
Location: Portland, OR
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Just added 1GB of Crucial RAM to my MBP 1.83 that came with 512MB. The process was very easy -- three small screws and popped in the new stick.
DDR2 PC2-5300 • CL=5 • UNBUFFERED • NON-ECC • DDR2-667 • 1.8V • 128Meg x 64
Part Number: CT12864AC667
Price: $164.12
Boot up was normal and system showed the additional RAM at 1.5GB total. I may go for the full 2GB updgrade if performance warrants.
Cheers.
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Thanks,
~John (Mac newbie)
http://www.pbase.com/ttime4four
15" MBP 1.83 / 2GB Ram / 80 GB HD / 250GB FW HD / 20"Cinema Display
Self Built P4 3.0 HT WinXP PC 1GB Ram / 120GB HD
XBox 360
All Cat5 Networked
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