Well… that was quick! Just two days after they were released, the 2011 iMacs have a firmware update.
While iMac EFI Update 1.6 is described as including “fixes that improve performance and stability for Thunderbolt,” it would also seem that an unadvertised benefit is that it also unlocks the full 6Gb/s, SATA 3.0 capabilities of two of the internal drive bays.
Unfortunately, the optical bay remains at 3Gb/s.
We’ll be doing some testing and posting some numbers to show the speed differences, and posting them as soon as we get them, so hang tight.
Oh, and for what it’s worth, it appears there’s also an update for the 2011 MacBook Pros, which includes “fixes that resolve an issue with Turbo Mode in Boot Camp, and improve performance and stability for graphics and Thunderbolt.” No word on if it addresses any issues with 6Gb/s SATA in the main hard drive bays of the 17” model.
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