RAM compatibility, early 2008 non unibody Macbook Pro 15" (MacbookPro 4,1)

[EpicBlack]

Hi,

I'm upgrading the RAM on my early 2008, non-unibody Macbook Pro 15" (Macbook Pro 4,1)

According to specs this supports upto 4 gigs offically and 6 gigs max.
RAM specs are PC-5300 667 DDR2 SODIMM RAM

I am considering buying the following RAM from Crucial.

Manufacturer Crucial
Manufacturer Part # CT51272AB667S
Memory Type DDR2 SDRAM
Capacity 4GB
Pins 240 Pin
Bus Type PC-5300
Error Correction Registered ECC
Cycle Time 6ns
Cas CL5
Data Transfer Rate 667Mhz
Memory Clock 166Mhz
Rank Rank 1
Voltage 1.8

The crucial website has a tool that states that this RAM would be incompatible with my Mac. I dont understand why so I thought I'd check here.

Could anyone help me out since I plan to buy this soon.
If it isnt, would be great if you could suggest some options/

Thanks,
Epic

 

[simsaladimbamba]

That is because you have selected 240 pin RAM, which is RAM for desktop computers.
You need 200-pin DDR2 SO-DIMM RAM, which is RAM for older notebook computers and the older iMacs and the older Mac minis.

Upgrading RAM in MacBooks and MacBook Pros​

 

[EpicBlack]

Thanks... yeah I just figured that... Thing is, Im having a tough time finding DDR2 at reasonable prices... found this for a steal.

Ah well, Thank you. And great post you shared!

 

[EpicBlack]

Hey how bout these?

http://www.amazon.com/gp/product/B008LTBIHQ/ref=ox_sc_act_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

Cant seem to find a single 4gb sodimm so that I can upgrade to 6 GB

 

[simsaladimbamba]

They will work, here is a 4 GB module on eBay via this search.

Maybe also invest in an SSD, 256 GB ones can be had for less than 150 USD nowadays, and SSD will speed up your Mac immensely.

 

[EpicBlack]

But these are rated at 800 MHz whereas my MBP takes 667 MHz.

Is it backward compatible because its 200 pin? will I be able to mix 800MHz in one slot with 667 in the other?

Thanks in advance.

And yes, I'm going for a boot HDD replacement too. Want to juice this baby for another year at least..

 

[EpicBlack]

hey guys. can you help me out with whether 800 Mhz ram would be cackward compatible with my 667 rated macbook pro ram slot. I want to buy it today.

thanks in advance.