RAM configuration for MacPro

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You're better off getting two or four 2 GB FBDIMMs rather than loading your machine up with 1 GB FBDIMMs. OWC is a good vendor, also check Data Memory Systems

 

I would buy 4 x 2 GB modules from OWC. Keep in mind that each FB-DIMM sucks about 10 watts so getting 8 x 1 GB instead of 4 x 2 GB increases the power consumption of your machine by 40 watts in addition to producing more heat.

I have the original 2 GB that came with my machine sitting in an anti-static bag since I am seldom breaking the 8 GB barrier with my current usage patterns. Getting 4 x 2 GB also allows the possibility of upgrading to 12 or 16 GB without throwing any memory away 2-3 years down the line.

Installing new memory on the mac pro is dead simple and definitely something any one can do even if you don't have prior experience with doing your own hardware upgrades (same goes for upgrading the hard drive which is even easier).

 

4 x 2 GB definitely. It's faster, more cost-efficient and you'll have some free slots for the future upgrades.

Great. It comes along with a very helpful instruction leaflet.

Piece of cake. Really.

 

Yet another Mac Pro memory configuration thread.

Here we go again:

Toss the 1Gs to the side and do:

Top riser
2, 2, 0, 0

Bottom Riser
2, 2, 0, 0

Or, if you want to keep the 1Gs, do this

Top riser
1, 1, 2, 2

Bottom Riser
1, 1, 0, 0