2011 27" iMac SSD upgrade + fan speed - Whats the current consensus? | MacRumors Forums
How-To: Now's the right time to swap your old iMac's hard drive for a fast new SSD - 9to5Mac
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2011 imac 27" 32GB - final stage of 1TB + 2TB SSD upgrade (replaced HDD & optic drive). Also cleaned out the fans and case. Running 'SSD Fan Control' & 'Macs Fan