To move a drive from an 08 to an 09 you must use the correct sled or the pins don't match up to the motherboard when you slide them in. The 08 takes DDR2 The 08 takes DDR3 Īlso, & you really can't tell without sitting two side by side, the drive sleds are different sizes. I forgot to mention that the memory isn't compatible either. It can also be updated to Sierra 10.12 once the firmware has been upgraded. It can reasonably simply be upgraded to 2012 5,1 firmware & will take dual 6-core Westmere's rather than the original Nehalems. OWC's picture also hints at (well, advertises -) one more thing about the 09. The 2009 has an entirely different structure - both the CPUs & RAM are on a removable daughterboard, the huge front fan assembly has been replaced by a single fan & a nice PCI card release, far improved over the 08's 'fiddle around underneath like a PC' structure. At the front is a large dual fan assembly. The 08 mounts the CPUs directly to the motherboard, 'sideways' like a standard PC, with separate removable RAM daughterboards onto which individual sticks are installed. The top ⅓ is visually similar, though the 08 uses PATA connections in the optical bay, the 09 has SATAII.Īs for the rest, these are just the visible highlights. The machines are totally different as soon as you take the side off, visually & electronically.
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