Slots 3&4 and 7&8 need to be the same density. If you go with 4GB DIMMs then I would do 6 x 4GB and replace all the 1GB DIMMs, I strongly recommend looking at the whole system and it definitely needs at least 20GB RAMĪn SSD is the cheapest and best way to improve performance - but you are on the too lite site of RAM right now. Sometimes it makes sense as shipping and VAT, especially if you were to buy: memory, GPU, etc along with this. Take a look at OWC for reference in price and configurations However I would be looking into 8GB DIMMs.ģ x 8GB memory to start with and another 24GB later.Ģ4-32GB is common and referred to as sweet spot.Ĩ x 4GB might be 'enough' but adding more would mean selling some. No not into the two empty slots, the memory utility will pop up when you reboot and let you know when it is not right.īeing DDR3 it uses triple channel so 3 or 4 of the same is best, and the two end positions need to be the same as well.ģ x 4GB on one bank would be the minimum I would do, and have 4 x 1GB on the other bank.
After boot up (10.9.5) I'm usually down to about 2.4 GB of RAM with Safari open (source Memory Clean App) so Another 8GB should be enough to open PS CS3 and maybe iTunes (I'm a intermediate photographer - So i tend to use my Pro for editing images). Could I drop this: *-earl y-2009/CT942676 2x4GB into the 2 empty slots?