LR3 How Much RAM?

Hi all,
I'm going to order the following spec mac shortly:
-27" iMac i7 2.93gz quad-core
-2TB internal disk (7200rpm) - For OS and APPS only
-2TB G-Tech G-Raid Raid0 FW800 external disk (7200rpm) - For LR3 Catalog, Photos and Video
-Running Snow Leopard OS
I'm a photographer and will be using this for Lightroom 3 RAW processing (25MB files), video file management and Adobe Production CS5 for HD video editing.
My question is really around RAM, the iMac's default spec is for 4GB 1333 DDR3.
Would anyone who is using LR3 on a mac, please give give me an indication as to what the base level should be for efficient use?
Also any comments on using the FW800 external RAID0 drive as my primary LR3 drive would be appreciated.
Many thanks.

ghdweb wrote:
Hi all,
I'm going to order the following spec mac shortly:
-27" iMac i7 2.93gz quad-core
-2TB internal disk (7200rpm) - For OS and APPS only
-2TB G-Tech G-Raid Raid0 FW800 external disk (7200rpm) - For LR3 Catalog, Photos and Video
-Running Snow Leopard OS
I'm a photographer and will be using this for Lightroom 3 RAW processing (25MB files), video file management and Adobe Production CS5 for HD video editing.
My question is really around RAM, the iMac's default spec is for 4GB 1333 DDR3.
Would anyone who is using LR3 on a mac, please give give me an indication as to what the base level should be for efficient use?
Also any comments on using the FW800 external RAID0 drive as my primary LR3 drive would be appreciated.
Many thanks.
Check with OWC (Other World Computing).. They have a mod for the new iMac's which allows for an eSATA external drive which would be much faster than a FW800 RAID. You should keep the LR3 app. and catalog on the system drive if you can. I have my LR Cache on an eSATA connected external drive. Good luck with the new machine.
Jay S.

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