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7950 Mac Edition Fan Speed

ok...something new happened with my mac pro.
now the stress test doesn't work, my 680 stays with 1380 fan speed even after the open gl test.
i really can't understand
 
xelanaiznac said:
ok...something new happened with my mac pro.
now the stress test doesn't work, my 680 stays with 1380 fan speed even after the open gl test.
i really can't understand
Click to expand...

same here, I noticed in that test with the HD 7950 I would get like 900fps on the very first test, with my GTX 680 I get like 600fps for the very first test.

Either the OpenGL test doesn't push the card for some reason (drives keeping the card in "low power mode" or amd has better opengl drivers since the 7950 beats it on that test.

However if I run an actual game the card gets stressed and fan speeds come down.
 
I forgot to mention that I had nvidia web drivers installed.
I just upgraded to 10.8.4, the nvidia web drivers are not compaible. AND now that they are disabled, and under 10.8.4 the problem of the high pci exp fan speed disapears !
Of course this does not concerns amd cards such as 7950 but it seems (at least for me) that upgrading to 10.8.4 from 10.8.3 saved the problem. Waiting for new nvidia web drivers
 
macmaniac75 said:
I forgot to mention that I had nvidia web drivers installed.
I just upgraded to 10.8.4, the nvidia web drivers are not compaible. AND now that they are disabled, and under 10.8.4 the problem of the high pci exp fan speed disapears !
Of course this does not concerns amd cards such as 7950 but it seems (at least for me) that upgrading to 10.8.4 from 10.8.3 saved the problem. Waiting for new nvidia web drivers
Click to expand...

do you have a 4,1 or 5,1?
 
macmaniac75 said:
I forgot to mention that I had nvidia web drivers installed.
I just upgraded to 10.8.4, the nvidia web drivers are not compaible. AND now that they are disabled, and under 10.8.4 the problem of the high pci exp fan speed disapears !
Of course this does not concerns amd cards such as 7950 but it seems (at least for me) that upgrading to 10.8.4 from 10.8.3 saved the problem. Waiting for new nvidia web drivers
Click to expand...

no, I cannot confirm this. We are talking about high fan speed after cold boot.

btw. web drivers are still present if not uninstalled after upgrade from 10.8.3, you only need to modify the OS version check in NVDAStartup.kext Info.plist, then they run on 10.8.4 as well.
 
Sorry adder7712, you are unfortunately RIGHT ! The problem came back once more after cold reboot ! It is very strange that after a cold reboot on another boot drive, or after a system upgrade, the fna speed is OK at 800 rpm. The next cold boot on the same HD , the fan speed is at 1500 rpm. At least on my configuration, i lunch Glview ewtendion viewer test and after it, the fan speed comes back to 800 rpm.
 
some recent news about this problem : it seems to be solved ! no more high fan speed on cold reboot.
And the only thing that I see to explain this is that the problem disapeared after an update of my little snitch software to 3.1.1 ....
 
macmaniac75 said:
some recent news about this problem : it seems to be solved ! no more high fan speed on cold reboot.
And the only thing that I see to explain this is that the problem disapeared after an update of my little snitch software to 3.1.1 ....
Click to expand...
I have Little Snitch 3.1.1 since it was out.
Nevertheless the problem is still there with my new GTX 680 Mac Edition.
The OpenGL Extensions Viewer trick works for me.
I think I have to live with it...
 
SadChief said:
I have Little Snitch 3.1.1 since it was out.
Nevertheless the problem is still there with my new GTX 680 Mac Edition.
The OpenGL Extensions Viewer trick works for me.
I think I have to live with it...
Click to expand...

OK I found on another thread (thank you ActionableMango) that putting the card in slot 2 solves the fan problem on cold reboot.
It did :)
 
SadChief said:
OK I found on another thread (thank you ActionableMango) that putting the card in slot 2 solves the fan problem on cold reboot.
It did :)
Click to expand...

I just moved my GTX 680 to SLOT 2, and the PCI-E and PSU fan are running at normal speed on a cold start. YAY!!!!

Is there any performance differences using SLOT 2 instead of SLOT 1?
I have a MP 4,1 2009
 
^^^^In a word - No! Both slots are PCIe 2.0, 16 Lane. You do however lose the third PCI slot.

Lou
 
macmaniac75 said:
My similar experience : Mac pro 4,1, upgraded 5,1 under 10.8.3, with w3690 + evga gtx 670 2Gb. Evrything run smoothly untill 2 days ago, without any notice (as far as i know, no system upgrade. PCI-e fan always at 800 rpm, and now around 1500-1600 rpm. Pushing with a gpu intensive application at 2000 rpm has the effect to unlock this high fan speed, otherwise it is stuck to 1500 rpm and never lower !
I did pram reste --> no effect. I did smc reset, twice, no effect ! I have my system backup on a external drive. I noticed that at the first boot on this backup disk on FW, the fan speeds are all OK around 800 rpm (booster and PCI the others at 600 rpm). But the next boot the PCI fan speed goes back to 1500 rpm.
Very strange ! I do not see a cause to this. For me it is not a Hardware change and I do not think it is a hardware failure wether the graphic card nor the computer or internal components I have in (6 SSD + 4 HD + 2 velocity solo x2, + 1 esata card).
So i suspect is is software, but i do not have the courage to test another osx version startup disk ...
Click to expand...

I have the same
mac pro 4.1 to 5.1 ati 5770 pci fan 1300.
What can I do?
 
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