QUOTE (AlanG @ Jul 8 2008, 08:07 AM)
The Mac motherboard requires a RAID card whereas lots of PC motherboards have RAID built in.
Not necessarily. A Mac Pro only requires a RAID card for doing RAID 5, but RAID 0 and RAID 1 are supported by the OS disk utility straight out of the box.
QUOTE (AlanG @ Jul 8 2008, 08:07 AM)
In addition, the Mac Pro is limited to 4 internal hard drives and what look like 2 5 1/4 bays.
You can add more hard drives if you put one of these in it:
http://www.maxupgrades.com/istore/index.cf...&product_id=158not to mention the ability to add on eSATA out the back...
I recently bought the base level quad core Mac Pro and installed the following:
16Gb DDR 800 RAM
300Gb 10k Velociraptor - OS / Apps
2x 74Gb 10k Raptors in RAID 0 - scratch
2x 500gb 7.2k Barracudas RAID 0 - data
1Tb 7.2k Barracuda - data backup
(os / apps backed up wirelessly to Time Capsule)
Works like a dream.
Personally for me though the amount of memory you can install is what truly makes the Mac Pro better for Photoshop than the PC. Thats the number one factor affecting Photoshop performance so it makes sense to use as much as possible. I am a pretty heavy power user, working with several multi-gigabyte files at a time, and I noticed a big difference going from a top-of-the-line PC with 8Gb to a dual quad core Mac Pro with 16Gb. I'm sure 32 would be even better too, but it really boils just down to what your needs are if thats worth the cost.