Memory upgrade for iMac 8.1




I have a friend who wants to upgrade the memory in his 8.1 iMac (Early 2008)
Below are the computer’s specs:

Model Name: iMac
Model Identifier: iMac8.1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 1 GB
Bus Speed: 1.07 GHz
Boot ROM Version: IM81.00C1.B00
SMC Version (system): 1.29f1
Serial Number (system): ------------
Hardware UUID: -------------

Memory Slots:

ECC: Disabled


Size: 1 GB
Speed: 800 MHz
Status: OK
Manufacturer: 0xAD00000000000000
Part Number: 0x48594D503131325336344352362D53362020
Serial Number: 0x0000400A


Size: Empty
Type: Empty
Speed: Empty
Status: Empty
Manufacturer: Empty
Part Number: Empty
Serial Number: Empty

I simply want to check to make sure these 8.1 iMacs are not too picky when it comes to memory. Can I get any 1GB stick of DDR2 SO-DIMM and the computer will run at the slowest sticks speeds/timings. Do I have to get a PC-6400 with the same timings as the first stick? Do I have to use “Mac approved” memory? Any suggestions are welcome.

Thanks in advance!

adict2jane :cool:


I would go with a 2GB stick, its okay to mix that with the current 1GB stick. Go with CL5 and 1.8V and you should be fine, G.SKILL 2GB 200-Pin DDR2 SO-DIMM DDR2 800, $52 FS.

I would rather go Crucial or Corsair due to compatibility concerns, you can run 4Gb sticks if you want more ram.