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I've had my 21.5' for 2 1/2 weeks and now I want to upgrade. It's the higher-end one with the ATI 4650 HD card and the 1TB drive. Do I have a shot? I just passed the 14-day return window.

Hypothetically, dual channel 1333mhz ram has 21gb/s memory bandwidth compared to dual channel's 1066mzh, which is rated at 17gb/s memory bandwidth. Only a select few tasks will take advantage of that amount of memory bandwidth, and the difference probably won't be significantly noticeable. Question: Q: Can I use 1066MHz DDR3 ECC SDRAM in a 1,1 Mac Pro I recently upgraded my 2.66GHz 4 core Mac Pro 2006 to a 2.66 GHz 8 core. I am using 667MHz DDR2 ECC fully-buffered RAM but I see that when new the 8 core model used 1066MHz DDR3 ECC SDRAM which is less expensive.

I definitely want to upgrade to either the new 21.5' higher-end one or, for an extra $200, go with the lower-end 27'. By the way, FYI, I have 16GB of DDR3-1066 RAM.

Some of you may have added RAM as well so I checked that out as well: ALL four models with ALL of its base and upgradable processors support BOTH 1066MHz and 1333MHz DDR3 RAM. How much of a difference between the two speeds will be noticeable? I could just sell all four of my 4GB DDR3-1066 chips (all NEW! Grrr.) and then buy DDR3-1333's.What a pain. Any recommendations? Thanks, dfiler!

Sony vaio download drivers. So I won't then! I'll have to rip out the 2x2GB DDR3-1333 RAM chips and put my 4x4GB DDR-1066. I hope it really IS compatible lol.Just called my Apple store and they have the 27' in stock and are willing to swap it out (+$200 of course). Do I want the Core i5 for an extra $180? (educational discount)? It says on Apple's website that the Core i3 that's in the lower-end 27' model does support Turbo Boost, but according to Intel's website, that's not the case.

Sylvania mp3 player drivers for mac. They also have an error on there on the ATI card (512MB version).According to ATI(AMD's site), they're both GDDR5.WTF!???? Just like Crunch I recently ordered a 27' i7 that arrived today (7/27)! I spoke to apple an they told me to not open the box and they are doing a full exchange for a 2.93Mhz i7 version. In fact, I added a new track pad and a battery charger and after all is said and done, I will get back about $8 on my credit card.

The one question I have is that the i7 I purchased is configured with 2x2GB of 1333MHz memory (4GB total). I already purchased 2x4GB 1066MHz of memory that was supposed to go into the original system (for a total of 12GB). Does anyone know if the OS is smart enough to be able to mix the 4GB of 1333 and 8GB of 1066, or am I going back ebay?

Originally Posted by netispguy Just like Crunch I recently ordered a 27' i7 that arrived today (7/27)! I spoke to apple an they told me to not open the box and they are doing a full exchange for a 2.93Mhz i7 version. In fact, I added a new track pad and a battery charger and after all is said and done, I will get back about $8 on my credit card. The one question I have is that the i7 I purchased is configured with 2x2GB of 1333MHz memory (4GB total). I already purchased 2x4GB 1066MHz of memory that was supposed to go into the original system (for a total of 12GB).