crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934243:0crwdne2934243:0 sg101

crwdns2947189:0crwdne2947189:0:

High hard drive fan speed after SSD upgrade

crwdns2934249:0crwdne2934249:0:

I just upgraded the drive on my 2009 iMac to a 500GB SSD using the iFixit kit.  Everything is good but the hard drive fan now runs at full speed all the time which  I gather is a common problem after SSD upgrades.   I am temporarily managing it by overriding system fan control using TG Pro to keep the fan speed down but doesn’t seem like a good, long-term solution.

I re-used the adhesive temp sensor from the old drive (now sticking to the metal  case of the new SSD) and TG Pro reads ~40°C  (@ 1600RPM).   So, if the sensor is reporting that the drive is at a reasonable temp, why does the computer think it needs to run the fan so fast?

Is there a solution to this that lets the computer properly regulate fan speed without being overridden or is there some hardware flaw I need to address?

thanks,

crwdns2866306:0crwdne2866306:0:

iMac Intel 20" EMC 2266

crwdns2915684:0crwdne2915684:0:

open

crwdns2934251:0crwdne2934251:0:

+593633

crwdns2934241:0crwdne2934241:0 sg101

crwdns2947189:0crwdne2947189:0:

High hard drive fan speed after SSD upgrade

crwdns2934249:0crwdne2934249:0:

I just upgraded the drive on my 2009 iMac to a 500GB SSD using the iFixit kit.  Everything is good but the hard drive fan now runs at full speed all the time which  I gather is a common problem after SSD upgrades.   I am temporarily managing it by overriding system fan control using TG Pro to keep the fan speed down but doesn’t seem like a good, long-term solution.

I re-used the adhesive temp sensor from the old drive (now sticking to the metal  case of the new SSD) and TG Pro reads ~40°C  (@ 1600RPM).   So, if the sensor is reporting that the drive is at a reasonable temp, why does the computer think it needs to run the fan so fast?

Is there a solution to this that lets the computer properly regulate fan speed without being overridden or is there some hardware flaw I need to address?

thanks,

crwdns2866306:0crwdne2866306:0:

iMac Intel 20" EMC 2266

crwdns2915684:0crwdne2915684:0:

open