ECC memory on Macbook Pro mid-2009

For what I researched, it uses regular DDR3 1066MHz PC38500 SO-DIMM modules, not LPDDR, so 1.5V.

Being ECC modules, I believe this specific function won't work, but memory modules will. Being Macs kinda finicky about RAM, you better test it.

Also, an SSD would be the real improvement, way more noticeable the the RAM itself, even with 4GB of RAM.

fredericoroldao wrote:

Hi. My MacBook has 2×2 GB memory cards. I can get hold of 2×4 GB memory cards to give it a boost but these are ECC cards while the Mac has non-ECC cards. I’d like to know if I can use the ECC cards, even knowing I will not take advantage of the ECC. I just need to make sure if the Macbook will accept the cards and “ignore” the ECC and this won’t harm the MacBook. I’m also trying to figure out if this MacBook uses 1.5 or 1.35V cards.

Thanks and forgive the ignorance :-)

Best to buy RAM from reliable source with the exact specs.

Usually a lifetime guarantee on RAM from third party source like:

* https://eshop.macsales.com/shop/memory/Apple_MacBook_MacBook_Pro/Upgrade

https://www.crucial.com/products/memory/mac/memory-for-mac

*See all OWC/MacSales partners/ reseller around the world:

https://www.owcdigital.com/reseller/resellers