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2008 Mac Pro memory configuration
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Senior User
Join Date: Jun 1999
Location: San Jose, CA
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So I purchased a new Mac Pro with the stock 2 GBs. I want to upgrade the memory, as I have heard that having 4 slots filled will yield better performance. My question is does it matter if those 2 slots are filled with like sized RAM modules? Do I have to now stick with 1 GB sticks to maximize performance? Or can I stick in 2x2GB and still expect to maximize my performance?
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Senior User
Join Date: Jun 1999
Location: San Jose, CA
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Anyone have any thoughts on this?
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Forum Regular
Join Date: Dec 2003
Location: Connecticut
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MacPro 2.8/8-core Xeon/10.5.8/8GB ram. MacBook Pro 2.26/10.6.2/4GB ram/250GB drive. Airport Extreme 802.11n
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Posting Junkie
Join Date: Oct 2005
Location: Houston, TX
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Yes, 4 modules is better than 2, and no, the second two don't have to match the first two.
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Fresh-Faced Recruit
Join Date: Nov 2007
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Ok, do I get this straight: one could add 4GBs (2x2GBS) to the stock 2GBs (2x1GBs) by moving the stock modules to the bottom riser and replacing them with the new modules on the top riser? But the performance would be better by adding 4x1GBs instead? How would you add these? Would it make more sense to first buying 2x1GBs, then later purchase 2x2GBs, to make it 8GBs total. Does that make more sense, or should I purchase 6GBs right away? I'm on a budget. This is a bit confusing.
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Forum Regular
Join Date: May 2007
Location: Canada
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I would suggest 4x2GB and sell the 2x1GB that came with it. Then you have 8GB in the second best configuration and room for growth.
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Mac Elite
Join Date: Oct 1999
Location: Carmel, IN, USA
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I don't know yet what the performance impact will be, but I got 2x2, put them in the top and moved one of the 1s down to the bottom. I certainly wouldn't fill the machine with 1GB units, as that's just crippling expansion. Further, a set of 2 2GB is cheaper than 2 sets of 1GB (got mine at OWC). I know it would be a bit faster though.
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Last edited by schalliol; Feb 20, 2008 at 11:12 PM.
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iMac Late '15 5K 27" 4.0 Quad i7 24/512GB SSD OWC ThunderDock 2 Blu-Ray ±RW MBP '14 Retina 15" 2.6 16/1TB iPhone 7+ 128 Jet Black iPad Pro 128 + Cellular
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Forum Regular
Join Date: Jul 2001
Location: Houston
Status:
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Thanks for the info...I'm about to buy some 2GB's as well.
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Junior Member
Join Date: Jan 2008
Status:
Offline
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Do not sell the 1GB sticks, if your mac pro buggers up, you need to have those for sending it back to Apple.
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