Corsair Mac Memory - Beeping After Replacing RAM on Late 2008 Macbook

[minky1234]

I bought this RAM:

http://www.memoryexpress.com/Products/MX34047

I have read online that with the correct boot ROM (MB51.007D.B03) my computer should support 8gb of RAM.

When I installed them and try to turn on my macbook I just get 3 beeps.

I'm pretty sure this is the correct RAM, unless anyone can correct me? Is the RAM bad?

Oh yeah and I also tried different combinations of the old RAM and new RAM, but the same thing happened until I put the stock RAM back..

Thanks

 

[old-wiz]

likely defective ram.

 

[minky1234]

Went back to the store with my Macbook, tried out 3 sets of Corsair RAM and all wouldn't work..

Then switched for GSkill 8gb (2 x 4gb) PC3-10666 DDR3 1333 MHz and works perfectly! Not sure if Macbooks are picky with Corsair RAM.

 

[brop52]

Went back to the store with my Macbook, tried out 3 sets of Corsair RAM and all wouldn't work..

Then switched for GSkill 8gb (2 x 4gb) PC3-10666 DDR3 1333 MHz and works perfectly! Not sure if Macbooks are picky with Corsair RAM.

Yeah the G. Skill set works well in mine.

 

[chiefpavvy]

The latest firmware is absolutely required to run 8GB in the late 2008 unibody MacBook.

And there are some incompatibilities [with some RAM modules by some manufacturers], although I used Corsair modules with no problem. Remember that Corsair makes a zillion different model numbers and you probably just got unlucky with one that it doesn't like.