I have a mid 2007 IMac, 2.4Ghz intel core 2 Duo with 2 GB 667 MHz DDR2 SDRAM can I upgrade to 4GB

I have a mid 2007 IMac, 2.4Ghz intel core 2 Duo with 2 GB 667 MHz DDR2 SDRAM can I upgrade to 4GB?

Maximum Memory
6.0 GB (Actual) 4.0 GB (Apple)
Memory Slots
2 - 200-pin PC2-5300 (667MHz) DDR2 SO-DIMM

Similar Messages

I have an iMac 5.1 ,2ghz core 2duo with 1gb 667 MHz ddr2 SS ram running osx 10.6.8. How much tota ram can I install and will it be enough to run lion and/or mountain lion?

I have a iMac 5.1 running osx 10.6.8 , core 2duo, and 1ghz 667mhz DDR sdram. How much ram can be added and will it run lion/mountain lion? Thanks.

As an additional thought: I had this same model iMac and although you can install 4 GB RAM, it will only address just over 3 GB. Since Lion is somewhat of a memory hog, you really will not be very happy with the performance using anything less than 4 GB - and even 4 GB is a bit of a minimum; fine for basic needs, but any photo or video editing will require more than that.

I have a mac OS x version 10.4.11 2 GHz Intel Core 2 Duo 1 GB 667 MHz DDR2 SDRAm. Can I use Crucial 2 x 1 GB 667 MHz DDR2 SDRAN to upgrade memory?

I have a mac OS x version 10.4.11 2 GHz Intel Core 2 Duo 1 GB 667 MHz DDR2 SDRAm. Can I use Crucial 2 x 1 GB 667 MHz DDR2 SDRAN to upgrade memory?

The downloads are probably .dmg files (disk images). You would open the disk image (double-click it) to find the application or an installer. If it's the application itself, you then drag the application to your Applications folder to "install" it. If it's an installer, double-click the installer to run the installer that installs the application.
NOTE: If you iMac is Intel, it's not a PPC G5.

Hello I have an iMac 24 inch Mid 2007, 2.4 GHz Intel Core 2 Duo, 4 GB 667 MHz DDR2 SDRAM, with recently updated and reinstalled Maverick OS 10.9.1 due to frequent sudden crashes, save mode hasn't seemed to help, crash report below

Anonymous UUID: 394498C3-A77C-DEE2-E84F-B124F1F29240
Mon Feb 17 22:09:58 2014
panic(cpu 1 caller 0xffffff80186dc19e): Kernel trap at 0xffffff8018541110, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0xffffff8018541110, CR3: 0x000000006ab66000, CR4: 0x0000000000000660
RAX: 0x000000001be3bdb1, RBX: 0xffffff8023f81408, RCX: 0x000000000000000c, RDX: 0xffffff802894be90
RSP: 0xffffff8098273828, RBP: 0xffffff80982738d0, RSI: 0xffffff8098273c70, RDI: 0xffffff8018ceeae0
R8: 0x0000000000000000, R9: 0x0000000000000000, R10: 0x000000000000001d, R11: 0x0000000000000246
R12: 0x000000001be3bdb1, R13: 0xffffff8098273c70, R14: 0xffffff8023f814c4, R15: 0xffffff8018ceeae0
RFL: 0x0000000000010282, RIP: 0xffffff8018541110, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0xffffff8018541110, Error code: 0x0000000000000010, Fault CPU: 0x1
Backtrace (CPU 1), Frame : Return Address
0xffffff80982734b0 : 0xffffff8018622f69
0xffffff8098273530 : 0xffffff80186dc19e
0xffffff8098273700 : 0xffffff80186f3606
0xffffff8098273720 : 0xffffff8018541110
0xffffff80982738d0 : 0xffffff8018811d38
0xffffff8098273940 : 0xffffff80187fc9db
0xffffff80982739a0 : 0xffffff80187d544b
0xffffff8098273a20 : 0xffffff80187d4da4
0xffffff8098273ae0 : 0xffffff80187f3dc6
0xffffff8098273b80 : 0xffffff80187e5f15
0xffffff8098273c30 : 0xffffff80187e67d2
0xffffff8098273f50 : 0xffffff8018a3de23
0xffffff8098273fb0 : 0xffffff80186f3e06
BSD process name corresponding to current thread: fsck_msdos
Mac OS version:
13B42
Kernel version:
Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64
Kernel UUID: 1D9369E3-D0A5-31B6-8D16-BFFBBB390393
Kernel slide: 0x0000000018400000
Kernel text base: 0xffffff8018600000
System model name: iMac7,1 (Mac-F42386C8)
System uptime in nanoseconds: 260732062621
last loaded kext at 32683580624: com.apple.driver.AppleBluetoothHIDKeyboard 170.15 (addr 0xffffff7f9a1c9000, size 24576)
last unloaded kext at 213959498726: com.apple.driver.AppleFileSystemDriver 3.0.1 (addr 0xffffff7f9a3ff000, size 8192)
loaded kexts:
com.apple.driver.AudioAUUC 1.60
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleBluetoothMultitouch 80.14
com.apple.iokit.IOBluetoothSerialManager 4.2.0f6
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AppleHDA 2.5.3fc1
com.apple.iokit.CSRBluetoothHostControllerUSBTransport 4.2.0f6
com.apple.driver.ACPI_SMC_PlatformPlugin 1.0.0
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleBacklight 170.3.5
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.driver.AppleMCCSControl 1.1.12
com.apple.kext.AMDFramebuffer 1.1.4
com.apple.ATIRadeonX2000 8.1.8
com.apple.kext.AMD2600Controller 1.1.4
com.apple.driver.AppleIRController 325.7
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.iokit.SCSITaskUserClient 3.6.0
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.4.0
com.apple.driver.AppleUSBHub 650.4.4
com.apple.driver.AppleRTC 2.0
com.apple.iokit.AppleYukon2 3.2.3b1
com.apple.driver.AirPortBrcm43224 700.36.24
com.apple.driver.AppleFWOHCI 4.9.9
com.apple.driver.AppleAHCIPort 2.9.5
com.apple.driver.AppleIntelPIIXATA 2.5.1
com.apple.driver.AppleUSBEHCI 650.4.1
com.apple.driver.AppleUSBUHCI 650.4.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleSMBIOS 2.0
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 216.0.0
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleIntelCPUPowerManagement 216.0.0
com.apple.driver.AppleBluetoothHIDKeyboard 170.15
com.apple.kext.triggers 1.0
com.apple.driver.IOBluetoothHIDDriver 4.2.0f6
com.apple.driver.AppleMultitouchDriver 245.13
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.driver.DspFuncLib 2.5.3fc1
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAudioFamily 1.9.4fc11
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.0f6
com.apple.driver.AppleHDAController 2.5.3fc1
com.apple.iokit.IOHDAFamily 2.5.3fc1
com.apple.driver.IOPlatformPluginLegacy 1.0.0
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.IOPlatformPluginFamily 5.5.1d27
com.apple.iokit.IOFireWireIP 2.2.5
com.apple.iokit.IOSurface 91
com.apple.iokit.IOBluetoothFamily 4.2.0f6
com.apple.driver.AppleSMC 3.1.6d1
com.apple.driver.AppleSMBusController 1.0.11d1
com.apple.iokit.IONDRVSupport 2.3.6
com.apple.kext.AMDSupport 1.1.4
com.apple.AppleGraphicsDeviceControl 3.4.12
com.apple.iokit.IOGraphicsFamily 2.3.6
com.apple.driver.AppleUSBHIDKeyboard 170.15
com.apple.driver.AppleHIDKeyboard 170.15
com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.0
com.apple.iokit.IOUSBMassStorageClass 3.6.0
com.apple.iokit.IOUSBHIDDriver 650.4.4
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.driver.AppleUSBComposite 650.4.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.6.0
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOATAPIProtocolTransport 3.5.0
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.0
com.apple.iokit.IOUSBUserClient 650.4.4
com.apple.iokit.IO80211Family 600.34
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOAHCIFamily 2.6.0
com.apple.iokit.IOATAFamily 2.5.2
com.apple.iokit.IOUSBFamily 650.4.4
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.10
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 21
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.8
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0
Model: iMac7,1, BootROM IM71.007A.B03, 2 processors, Intel Core 2 Duo, 2.4 GHz, 4 GB, SMC 1.21f4
Graphics: ATI Radeon HD 2600 Pro, ATI,RadeonHD2600, PCIe, 256 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR2 SDRAM, 667 MHz, 0x7F7F7F1900000000, 0x4D4943533338554642203247422020202020
Memory Module: BANK 1/DIMM1, 2 GB, DDR2 SDRAM, 667 MHz, 0x7F7F7F1900000000, 0x4D4943533338554642203247422020202020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x88), Broadcom BCM43xx 1.0 (5.10.131.36.16)
Bluetooth: Version 4.2.0f6 12982, 3 services, 22 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: WDC WD3200AAJS-40RYA0, 320.07 GB
Parallel ATA Device: OPTIARC DVD RW AD-5630A
USB Device: Built-in iSight
USB Device: USB2.0 Hub
USB Device: Photosmart 8100 series
USB Device: ScanSnap S510M
USB Device: Keyboard Hub
USB Device: Apple Keyboard
USB Device: IR Receiver
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus:

That panic was not caused by third-party software. If the problem is recurrent, the possibilities are:
A stale or corrupt kernel cache
A damaged OS X installation
A fault in a peripheral device, if any
Corrupt non-volatile memory (NVRAM)
An internal hardware fault (including incompatible memory)
An obscure bug in OS X
You may already have ruled out some of these.
Rule out #1 by booting in safe mode and then rebooting as usual. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a Fusion Drive or a software RAID, you can’t do this. Post for further instructions.
You can rule out #2 and #3 by reinstalling the OS and testing with non-essential peripherals disconnected and aftermarket expansion cards removed, if applicable. Sometimes a clean reinstallation may solve a problem that isn't solved by reinstalling in place.
Corrupt NVRAM, which rarely causes panics, can be ruled out by resetting it.
If your model has user-replaceable memory, and you've upgraded the memory modules, reinstall the original memory and see whether there's any improvement. Be careful not to touch the gold contacts. Clean them with a mild solvent such as rubbing alcohol. Aftermarket memory must exactly match the technical specifications of the machine.
Apple Diagnostics or the Apple Hardware Test, though generally unreliable, will sometimes detect a fault. A negative test can't be depended on. Run the extended version of the test, if applicable.
In the category of obscure bugs, reports suggest that FileVault may trigger kernel traps under some unknown conditions. Most, though not all, of these reports seem to involve booting from an aftermarket SSD. If those conditions apply to you, try deactivating FileVault.
Connecting more than one display is another reported trigger for OS X bugs.
If your system is not fully up to date, running Software Update might get you a bug fix.
In rare cases, a malformed network packet from a defective router or other network device can cause panics. Such packets could also be sent deliberately by a skillful attacker. This possibility is something to consider if you run a public server that might be the target of such an attack.
Otherwise, make a "Genius" appointment at an Apple Store to have the machine tested. You may have to leave it there for several days. There isn't much point in doing this unless you can reproduce the panic, or if you can't, it happens often enough that it's likely to be repeated at the store. Otherwise you may be told that nothing is wrong.
Print the first page of the panic report and bring it with you.

IMac 2 GHz Intel Core Duo with 2GB RAM

The Internet is frequently very slow. I am hard wired to the TimeWarner Motorola cable modem, but also have a new router with 5 GHz that has a Firewire port. Would my Internet speed increase substantially by hard wiring to the router by Firewire?
My MacBook with 4GB RAM is much faster via a wireless connection.
Thanks very much for any ideas or comments.

Unfortunately, connecting your iMac by Firewire directly to a router which then connects to the cable modem will Not increase the speed of your Interent connection relative to directly connecting your iMac to the cable modem. Your iMac's network speed is at your ISP's delivered maximum directly through the cable modem. All the router would add is the ability to share the cable modem's output signal among multiple connected computers. I believe you are experiencing the fact that the internal hardware (CPU, RAM, etc.) of your older iMac may be slower in processing the ISP's internet signal than your more powerful MacBook.
Hope this helps:)

I have a MacBook running 10.6.8 2.2Ghz Intel core 2 duo 1 GB 667 Mhz DDR2 SDRAM is there any way to upgrade my MacBook without buying a new one since funds are not availible for a new one ? Thank You -Lance

Any advice would be helpful regarding this subject.....

You can start by upgrading your RAM. An advise would be to buy it from internet, here is a good page for that: https://www.ifixit.com/Store/Mac Along with some useful manuals for doing the upgrading yourself

I have a mid 2007 iMac.    2 GHz Intel Core 2 Duo, 4 GB 667MHz DDR2 SDRAM, OSX 10.9.5.   I attempted to do the latest update and got the message: Start up disk is full. Delete files. How do I do that?

I have a mid 2007 iMac.    2 GHz Intel Core 2 Duo, 4 GB 667MHz DDR2 SDRAM, OSX 10.9.5.   I attempted to do the latest update and got the message: Start up disk is full. Delete files. How do I do that?

Freeing Up Space on The Hard Drive
1. See Lion/Mountain Lion/Mavericks' Storage Display.
2. You can remove data from your Home folder except for the /Home/Library/ folder.
3. Visit The XLab FAQs and read the FAQ on freeing up space on your hard drive.
4. Get an external hard drive on which to store some of your files after which you can
      erase the data from your internal drive to free up space.
5. Also see Freeing space on your Mac OS X startup disk.
6. See Where did my Disk Space go?.
7. See The Storage Display.
You must Empty the Trash in order to recover the space they occupied on the hard drive.
You should consider replacing the drive with a larger one. Check out OWC for drives, tutorials, and toolkits.
Try using OmniDiskSweeper 1.8 or GrandPerspective to search your drive for large files and where they are located.

Mid 2007 iMac 2.4GHZ. after start up the iMac will slow down to a freeze. Specially while on internet (youtube).

mid 2007 iMac 2.4GHZ. after start up the iMac will slow down to a freeze. Specially while on internet (youtube).

See:
Mac Maintenance Quick Assist,
Mac OS X speed FAQ,
Speeding up Macs,
How to Speed up Macs,
Macintosh OS X Routine Maintenance,
Mac troubleshooting: What to do when your computer is too slow,
Essential Mac Maintenance: Get set up,
Essential Mac Maintenance: Rev up your routines,
Maintaining OS X,
Five Mac maintenance myths and
Myths of required versus not required maintenance for Mac OS X for information.

I have a mid 2007 iMac and the internal superdrive audio cd won't play, the DVD works. Can I purchase an external cd drive that will work with my iMac?

I have a mid 2007 iMac (Model A1224 iMac 7,1) and the internal superdrive audio cd won't play, the DVD works. Can I purchase an external cd drive that will work with my iMac?

Welcome to the Apple Support Communities
Any external optical drive will work with your Mac. If you want an Apple USB SuperDrive, see > http://www.tuaw.com/2012/04/02/use-the-macbook-air-superdrive-with-any-almost-ma c/
The best option is to take the Mac to an Apple Store and get the Mac's SuperDrive repaired

I have a mid 2007 iMac and want to know if i can upgrade to OS X Mavericks?

I have a mid 2007 iMac and want to know if i can upgrade to OS X Mavericks?

Just adding a point to Paul's suggestion of suppliers. (Congrats on getting to 5 figures, Paul)
In North America contact OWC …        Upgrade Apple iMac Memory
In Europe contact Crucial.com …       RAM Memory Upgrade
Both companies have facilities to guide you and will recommend the correct memory package to meet whatever needs you describe to them.
There may be benefits buying from your own geographical location insofar as Shipping charges, Local sales taxes and Exchange rates. Check out the basic memory costs and do your sums.

It takes a long time to open up documents on my Imac. I get the multicolor circle for a long time. I have 27 In Mid 2010 3.2 ghz Intel core I3 with 16 gb memory.

It takes a long time to open up documents on my Imac. I get the multicolor circle for a long time. I have 27 In Mid 2010 3.2 ghz Intel core I3 with 16 gb memory.

There are file hidden all around in your system.
Go to Phil Stokes' info page, for a gerat uninstall primer.

Hi, I have a macbook pro 17" 2.4ghz intel core 2 duo 2007, will upgrading to Yosemite slow me down or create problems with my Iphone or other app ?

Hi, I have a macbook pro 17" 2.4ghz intel core 2 duo 2007, will upgrading to Yosemite slow me down or create problems with my Iphone or other app ?

Yes, i do not suggest upgrading right now. There is some software malfunction or glitch that spontaneously shuts down this specific model. I upgraded and it was a pain to downgrade and make my mac usable again.

IMac (3.4gHz Intel Core i7) shuts down when sleeps, then won't restart

Just bought a brand new 27" iMac (3.4gHz Intel Core i7) which shuts down when sleeps, then won't restart (ie completely dead).
In order to restart, I have to unplug the power cord from the computer, hold power key down for 10secs, replug in and it then starts up. I returned to the store and they spent a couple days letting it go to sleep etc and overnight and for them it was fine. Woke up no problems. They returned it to me yesterday.
So I set it all up again, left it overnight and this morning it was dead again. So now it leaves me to wonder if it's something I have plugged into it.
I have a new Seagate 3TB external hard drive hooked up using USB3.0. This is plugged directly into the back of the computer.
I also have a powered USB hub plugged into the computer which has regular USB stuff such as printer, graphics tablet and another external hard drive (this one is older LaCie 500gb, and have put it into a new USB 3.0 case as well for the arrival of the new iMac (this had an old firewire hard drive case). However this hard drive is switched off at the case and is not being used.
I believe it could possibly be the Seagate 3TB disk causing this problem, but it works fine during the day while I am using the computer, it's just when I either leave it at lunch time to go to a meeting or walk etc or overnight that I come back and it has shut down....leaving me to believe that it's due to the computer going to sleep.
Has anyone else had a similar problem with a Seagate drive? Today I'm conducting an experiment and heading off for lunch with both hard drives unhooked. If I come back and the computer wakes up from a click of the mouse or keyboard as it should, I will plug in one hard drive at a time and re-test. I will leave the Seagate for last, as I don't think it is the old LaCie disk (which is off).
For reference sake, I also have a NAS running off my network through Airport Extreme etc and have my old iMac hooked up to the network too, but don't believe this is the problem.
Initially I did put in some after market RAM (another 8GB) and though that might be the problem, but I removed and it still reacted the same way (plus store I bought it from again booted up fine and woke up fine at their shop after I had taken RAM out too).
Will keep this post updated with my next test (letting computer sleep without either hard drive in), but keen to hear if anyone has had any similar experiences with Seagate disks/cases and the new iMacs.
Cheers,
Kristin

Hey kristinandmike,
I had a similar problem shortly after I bought my 27" iMac. Here is an excerpt from my discussion:
"As BDAqua suggested, I started the process of elimination by shutting down the externals and just leaving up one of the USB drives and using the computer until time to shut it off. After eliminating 2 of the 3 drives I figured it had to be the last one. That drive is a Seagate GoFlex Desk version that allows different bases with differing connectivity. I had previously used FW800 to connect but had switched to USB3 on the new computer. I went ahead and got a Thunderbolt to FW adaptor cable and switched this drive back to Firewire rather than USB3. So far so good."
For some reason the Seagate I was using didn't agree with the USB3 on the Mac.

IMac (27-inch, Mid 2011) 2.7 GHz Intel Core i5 4 GB 1333 MHz DDR3 running10.10.2 (14C1514). Trying to install Windows 7 64 bit from an install disc. When attempting to create an ISO image I can save the file in disk utility but can convert cdr to iso

iMac (27-inch, Mid 2011) 2.7 GHz Intel Core i5 4 GB 1333 MHz DDR3 running10.10.2 (14C1514). Trying to install Windows 7 64 bit from an install disc. When attempting to create an ISO image I can save the file in disk utility but can convert cdr to iso. I select the file and the hit return as in step 8 of the Creating an
iSO image document but the box that should open to select use iso does not open. How should I proceed?

The Mac SuperDrive built into your Mac is the Optical drive.
1. Insert your Windows DVD in Optical drive. Disconnect any external storage.
2. Insert a USB2 Flash drive. This will be used to hold the BC drivers.
3. Start BCA. Check the options to download software and Install Windows. You do not need to download Windows. The BCA will download the BC drivers to the USB.
4. Partition your drive.
5. You can see the Windows installer screens at https://help.apple.com/bootcamp/mac/5.0/help/#/bcmp173b3bf2.

I have a MacBook Pro 13inch 2.4GHz (Intel Core 2 Duo, 4Gb RAM, 250Gb HDD, NVIDIA GeForce 320M graphics, SD card slot, up to 10 hour battery life)bought in October 2010 in the UK. The charger has stopped working. Which model and voltage do I need please?

I have a MacBook Pro 13inch 2.4GHz (Intel Core 2 Duo, 4Gb RAM, 250Gb HDD, NVIDIA GeForce 320M graphics, SD card slot, up to 10 hour battery life) bought in October 2010. The charger has been playing up for a while now - the light going out but coming back on when I move the cable a bit - faulty connection it seems. It has now stopped working at all.
Apple UK charge a whopping £65 for a replacement - and the reviews are AWFUL for it!
I need to know which one I need - 45w, 60w and 80w are listed - can someone tell me please? If I'm going to pay this price I want to make sure I get the right one!
Also, is a genuine Apple one available on Amazon UK, does anyone know please?
Any help will be much appreciated.
Meanwhile my battery is going down.....

Thanks for that wjosten. Much appreciated.
I've read here on Apple's site that the 85W version will work, as you say, and that it would run cooler with a 13" Macbook - I have a 13" MBP of course but assume this would be the same with mine. I wonder if running cooler is a good thing (it sounds as if it is) and it would be better for me to get the 85W version than the 60W one?
Then I have to decide whether to pay the (extortionate as it seems to me, though I may be wrong) £65 from Apple (bearing in mind the rotten reviews here of the Apple product), or risk a cheaper alternative from Amazon UK, at around £20 (also with various rotten reviews)... Any suggestions? Please? :-)

I have a mid 2007 IMac, 2.4Ghz intel core 2 Duo with 2 GB 667 MHz DDR2 SDRAM can I upgrade to 4GB

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