![]() ![]() There are sensors for ambient air, the heat sink/pipe, the palm rest, the CPU, the GPU, the hard drive, etc. You most likely have a malfunctioning sensor, and it's not necessarily restricted to the CPU. One thing that I like in Macs is that you never hear the fans while you work. Checking the temperatures (always very low).That's strange because my other MacBook Pro (Mid 2010) is always quiet while I work, you start hearing the fans only under load. When I leave the MBP alone for 10 minutes, it becomes quiet again (you can't hear anything) but as soon as I start the simplest application, there go the fans at 2000 RPM. The problem is, as soon as I make the smallest action (like opening Finder), the fans start going at 2000 RPM (which seems to be the minimum speed on this machine) and you can always hear them in background. I was getting much better performances (booting Sierra in 18 seconds, instead of 30 seconds when it was in the Superdrive location). So I swapped the location of the HDD and SSD putting the HDD in the caddy. I installed a HDD+SSD setup on this MacBook Pro 15" Late 2011.Īt first I installed the SSD where the Superdrive was with an optical bay HDD caddy, but then I saw in System Informations -> SATA that while the speed link was 6 Gigabit, the negotiated speed was 3 Gigabit. ![]()
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