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if you need it now, just buy now. Sandy Bridge isn't looking to be a huge step in speed, clock-for-clock, so you'd be waiting on 8-core CPUs...but that's a ton of productivity lost just for 2 more cores.

TB is too slow for high-end graphics, PCI cards will probably be available next year, and in the meantime there's still USB 3 and eSATA 6.

note that if you build your workstations, you do the support, too. do you have time to do your own support? that would also be a reason to ditch Apple and go with Dell or HP (better business support).

are you pricing the 12-core MP with Apple parts? because there's no reason to. just get the CPUs and GPU and put in everything else yourself.
 
if you need it now, just buy now. Sandy Bridge isn't looking to be a huge step in speed, clock-for-clock, so you'd be waiting on 8-core CPUs...but that's a ton of productivity lost just for 2 more cores.

TB is too slow for high-end graphics, PCI cards will probably be available next year, and in the meantime there's still USB 3 and eSATA 6.

note that if you build your workstations, you do the support, too. do you have time to do your own support? that would also be a reason to ditch Apple and go with Dell or HP (better business support).

are you pricing the 12-core MP with Apple parts? because there's no reason to. just get the CPUs and GPU and put in everything else yourself.

This is probably a bit too confusing for the poor guy :) Some people say wait, SB-E will be a HUGE leap, some people say buy 12c 2.93 now, difference won't be noticable.

;)
 
This is probably a bit too confusing for the poor guy :) Some people say wait, SB-E will be a HUGE leap, some people say buy 12c 2.93 now, difference won't be noticable.

;)

it won't be fast enough to make up for 4 months of lost productivity. that's what it comes down to.
 
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