I always thought that iStat Menus already had some fan control included. Do you suggest SMC in addition to iStat?
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CPU A vs CPU B Temperature difference of 10 degrees
- Thread starter rueyloon
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I always thought that iStat Menus already had some fan control included. Do you suggest SMC in addition to iStat?
For me i can get faster access to the presets on SMC than iSTAT but thats the only benefit.
Hi everyone,
since I have a dual X5690 system, I have checked my temps (all in °C by the way).
My temps were a little bit higher after the initial installation on CPU A, so I decided to reapply thermal paste a few months ago. I used MX4.
They came down quite a bit, and I think there OK now.
Anyway, I was running a 15min full blast. Fan settings were not changed (system default), ambient temps are about 23°C...
since I have a dual X5690 system, I have checked my temps (all in °C by the way).
My temps were a little bit higher after the initial installation on CPU A, so I decided to reapply thermal paste a few months ago. I used MX4.
They came down quite a bit, and I think there OK now.
Anyway, I was running a 15min full blast. Fan settings were not changed (system default), ambient temps are about 23°C...
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Anyone know why in istat 5 when you adjust the booster on either a or b it reads it as double so if i adjust both booster a and b to 1500 it will read as 3000 on both a and b on the dropdown menu
Did you modify the custom "Medium" setting of the fan rules? Try to add a new set and modify this to your needs. I think the "Medium" setting of iStat is somehow broke. It is configured with 2300 rpm for CPU A and 3000 rpm for CPU B. If you modify the rpm setting for CPU B it will nevertheless let the fans spin at 3000 ....
I set up a new one and that appears to be working as intended.
After reinstalling the heatsink with a torque screw driver I can report back that everything is running cooler now.
Temperature difference between CPU A and B between 1 and 7 degrees (1 at startup, 5 at light usage and 7 under full load). Temp difference between CPU and heatsink 15 degrees under heavy load. Both heatsinks warm up. Without fan rules modification i get low 70 degrees C under full load (handbrake) on CPU A and if I increase both CPU fans to 2400 it cools down.
Machine is still amazingly quiet.
Under light usage both CPUs are between 40 and 50 degrees C and I think I do not need to modify the fan speed. That means I have the same level of sound emitted as with my 2x 2,4 GhZ setting.
Under heavy load I increase the rpm of the fans slightly (CPUs > 2300 and the rest >1000-1100) in order to have a lower temp, but the machine is running still at almost the same sound level when stressed out.
So anyone who is interested in putting two X5690 in their MAC PRO: yes you can, and yes it will still be the same quite machine you bought.
...
I would like to thank @h9826790, @lexR and @JronMasteR as well as all the others for their support!
Temperature difference between CPU A and B between 1 and 7 degrees (1 at startup, 5 at light usage and 7 under full load). Temp difference between CPU and heatsink 15 degrees under heavy load. Both heatsinks warm up. Without fan rules modification i get low 70 degrees C under full load (handbrake) on CPU A and if I increase both CPU fans to 2400 it cools down.
Machine is still amazingly quiet.
Under light usage both CPUs are between 40 and 50 degrees C and I think I do not need to modify the fan speed. That means I have the same level of sound emitted as with my 2x 2,4 GhZ setting.
Under heavy load I increase the rpm of the fans slightly (CPUs > 2300 and the rest >1000-1100) in order to have a lower temp, but the machine is running still at almost the same sound level when stressed out.
So anyone who is interested in putting two X5690 in their MAC PRO: yes you can, and yes it will still be the same quite machine you bought.
...
I would like to thank @h9826790, @lexR and @JronMasteR as well as all the others for their support!
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Congrats and glad to hear all is well. Your temps are normal as I've used various Mac Pros with X5670, X5674 or X5680 and temps and fan speed are similar as yours. Enjoy your Mac Pro.
my cpu A is at 40 Celsius and the B is at 28 . Is this normal ? Yesterday i replaced my 2,26 to the x5690 and to be sure that i have done the installation properly i used stat and realised the difference which varies from 10-14 celsius from time to time ...