7 Replies Latest reply: Oct 25, 2008 8:44 AM by Brad Minskoff
ZooCrewMan Level 2 Level 2 (225 points)
Hi everyone,

I'm not exactly a computer expert, but I'm learning, so I'm sorry if this sounds like an ignorant question, and I apologize if this has been addressed before...

I have read that the maximum (officially) supported RAM on a MacBook Pro is 4 gigs. I have also read, that the maximum (un-officially) supported RAM is 8 gigs.

Are there any issues I have to worry about if I get 2 4 gig chips and put them in my laptop, like extra power use, or extra heat? Has anyone else used this configuration? Will I see any real noticable speed increase? Or is this an exercise in futility?

MacBook Pro (Early 2008), Windows Vista
  • Kappy Level 10 Level 10 (260,560 points)
    Your model fully supports 4 GBs (two 2 GB modules.) Yes, there have been reports from some users who claim to have installed two 4 GB modules successfully. This is unsupported because Apple could not test the configuration at the time the new models were released. You can install 8 GBs but at your own risk - meaning if they don't work you have no recourse but to install two 2 GB modules at your expense.
  • Joe Goes Level 1 Level 1 (15 points)
    I don't know if you can use 8GB chips in the MacBook Pro but I'm using 2 2GB chips of Corsair VSA4GSDSKIT667C4 G they reckon it's the first performance memory for Macintosh computers. I think they are right cause I am noticing significant performance increase in games and load up times, also the bootup and shutdown times have improved as well.

    Hope the above helps.

    Oh I bought the kit for around £70 including delivery which is pretty cheap know?
  • JoeyR Level 6 Level 6 (8,275 points)
    I'd have a hard time thinking of any application that would require up to 8GB (unless you're just of the "more is better" school). Are you running some type of specialized app that requires lots of RAM? Admittedly... I have 8GB in my desktop just because I can... no because I realize any actual benefit from it.
  • stewiesno1 Level 1 Level 1 (120 points)
    Here is a link to one of my co-forum members from MacTalk Australia who has tried 8Gb and 6Gb in his MBP. He settled on the 6Gb as it slowed down too much with 8.
    http://forums.mactalk.com.au/29/58184-g-skill-4gb-ram-single-stick-works-macbook pro-1x4gb-1x2gb-6gb-works-10.html
    Different Ram modules from other manufacturers may give you the full 8Gb memory,
    As always , YMMV.


    Message was edited by: stewiesno1
  • ZooCrewMan Level 2 Level 2 (225 points)
    There is no single program I'm using that requires 8 gigs...There aren't even programs that require 4 gig to the best of my knowledge...I was just hoping it might work, because when I'm using Final Cut, and Photoshop, and a few others, it seems sluggish...especially when I try multi-tasking. It was just a thought though...
  • Sideman7 Level 1 Level 1 (0 points)
    I know in my 2.4 Ghz Santa Rosa Macbook Pro, 6GB is working wonderfully... From what I have read so far, 8GB will not. This article (here) I think gives an explanation as to why. Basically, these machines can address up to 8GB of memory, but this includes addressing the video ram as well, so a full 8GB of ram can't be addressed. If you try, the machine will eventually get confused and start to slow down a lot... This is the same issue with previous MBP's that could only address 4GB, so you could max them at 3GB of usable ram...
  • Brad Minskoff Level 1 Level 1 (5 points)
    *I wanted to see if anyone can help I am having issues with Firewire, no Hard Drive will mount (only one Lacie using USB which is Firewire 800 as I always used to use for it. One thing thats weird is I have a old IPod Photo which using firewire 400 does work! I am trying to log and Capture in Final Cut Pro HD 4.5 and it just quits right away. Also before that It would not recognize my* *Sony GV-D1000 Camera Deck via firewire. If anyone can check this out please any input is great!!
    I see if I need to upgrade, fix my hardware, or what ever is going on (or in this case not going on) is very frustrating.
    Sorry about LONG POST!
    Here is the the rest of this message go to http://web.me.com/bhm123/Main/PROBLEM_REPORT.html
    I need to try anything at this point!*

    Hardware Overview:

    Model Name: MacBook Pro
    Model Identifier: MacBookPro3,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 2.6 GHz
    Number Of Processors: 1
    Total Number Of Cores: 2
    L2 Cache: 4 MB
    Memory: 2 GB
    Bus Speed: 800 MHz
    Boot ROM Version: MBP31.0070.B07
    SMC Version: 1.18f4
    Serial Number:
    Sudden Motion Sensor:
    State: Enabled
    Name : ST9160823AS Media
    Type : Disk

    Partition Map Scheme : GUID Partition Table
    Disk Identifier : disk0
    Media Name : ST9160823AS Media
    Media Type : Generic
    Connection Bus : Serial ATA 2
    Device Tree : /PCI0/SATA@1F,2/PRT0@0/PMP@0/@0:0
    Writable : Yes
    Ejectable : No
    Mac OS 9 Drivers Installed : No
    Location : Internal
    Total Capacity : 149.1 GB (160,041,885,696 Bytes)
    S.M.A.R.T. Status : Verified
    Disk Number : 0
    Partition Number : 0

    Model: MacBookPro3,1, BootROM MBP31.0070.B07, 2 processors, Intel Core 2 Duo, 2.6 GHz, 2 GB
    Graphics: GeForce 8600M GT, GeForce 8600M GT, spdisplayspciedevice, 256 MB
    Memory Module: BANK 0/DIMM0, 1 GB, DDR2 SDRAM, 667 MHz
    Memory Module: BANK 1/DIMM1, 1 GB, DDR2 SDRAM, 667 MHz
    AirPort: spairportwireless_card_type_airportextreme (0x168C, 0x87), 1.4.4
    Bluetooth: Version 2.1.0f17, 2 service, 1 devices, 1 incoming serial ports
    Network Service: AirPort, AirPort, en1
    PCI Card: pci168c,24, sppci_othernetwork, PCI Slot 5
    Serial ATA Device: ST9160823AS, 149.05 GB
    Parallel ATA Device: MATSHITADVD-R UJ-85J
    USB Device: hub_device, high_speed, 500 mA
    USB Device: USB 2.0 LaCie d2 HD, LaCie, high_speed, 500 mA
    USB Device: Photosmart C4200 series, HP, high_speed, 500 mA
    USB Device: Built-in iSight, Apple Inc., high_speed, 500 mA
    USB Device: Bluetooth USB Host Controller, Apple, Inc., full_speed, 500 mA
    USB Device: Apple Internal Keyboard / Trackpad, Apple Computer, full_speed, 500 mA
    USB Device: IR Receiver, Apple Computer, Inc., low_speed, 500 mA
    USB Device: USB Hub, full_speed, 500 mA

    Process: Final Cut Pro [458]
    Path: /Applications/Final Cut Pro HD.app/Contents/MacOS/Final Cut Pro
    Identifier: com.apple.FinalCutPro
    Version: 4.5 (4.5)
    Build Info: FCPApp-4860000~2
    Code Type: PPC (Translated)
    Parent Process: launchd [102]