FAN noise and no TRIM after modifying iMAC and MacBookPro with SSDs.

Modified my iMAC and MBP with SSD drives on Yosemite 10.10.4:
- MBP with Intel Speed Demon.
- iMAC with Samsung 850 Evo.

Issues:
- MBP had TRIM disabled.
- iMAC had TRIM disabled
- iMAC fan was going fast.

Solution:
- Enable native OSX trim:
sudo trimforce enable

- Download software
SSD Fan Control

No need for custom software with Yosemite 10.10.4 and above.  TRIM can be enabled for non Apple SSD drives.