Originally posted by: Conjugal Visit
@wpcoe - seek out the Orthos version specific to the Core 2 Duo - its called Orthos Beta. It will run stress tests on both cores automatically. You want to run your fans flat-out 24/7? Why? With a modest 3.0 overclock, that rig should be almost dead silent if you let PWM do it's thing. As I've said, the stock Intel cooler is plenty for that CPU at 3.0. Let PWM ramp it up at stress, and drop it down when it's not.
I think I might already be using the beta? I googled for an Orthos beta download and all the links I checked were for the same file I previously downloaded: orthos_exe_20060420.cab.
My version of Orthos > About reports v0.41.110.18 and it already does stress both cores, it's the *RAM* that needs a second instance running to max it out, at least according to Windows Task Manager.
I don't plan to run with the fans on full bore 24/7/365. The one case fan has a growl at full speed that would drive me nuts! I just decided that while experimenting and testing I would leave fan control off mainly for consistency -- one less variable to factor in.
Now that leads me to more questions:
Whatever mechanism(s) the mobo BIOS uses to control fans, whether specifying the Intel or Legacy (what the heck is that, anyway?) options, only operates the stock Intel heat sink fan in a range of about 600rpm to maybe 1100rpm** even when core temps are in the 60's. When fan controll is OFF, it tears along at just over 2000 rpm. Why doesn't the BIOS fan control use any of the range between 1100rpm** and 2000rpm? It seems to constantly nudge the speed up and down within a narrow 650-950 rpm range a lot, but nothing higher than 1100rpm that I've seen.
Also, I can not get SpeedFan, either v.4.33 with the 15° adjustment applied to the core temps, nor v.4.34beta with the temps properly reported, to consistently control fan speeds. I can manually reduce the fan speeds but when an temp rise invokes a corresponding fan speed increase, it never drops back down to a lower speed when the target temp is reached.
Is there any definitive answer to where the non-core temp readings are taken by SpeedFan on this mobo? Obviously core0 and core1 are the internal chip sensors, and there is one sensor that always shows something like -2° on my system, and I wonder if that's a flaky hdd temp reading?, but the other two: I read someplace where the C2D chip has a third sensor somewhere outside the cores -- is that correct? And, the other temp sensor I've heard speculation that it is the Northbridge temp -- is that correct?
Thanks again to all for your knowledge and your patience.
edited to add:
**I just set the fan speed control back to Auto in BIOS, core voltage back to 1.35v, and ran two instances of Orthos and I did see the CPU fan momentarily creep up to 1305rpm with core temps at 61°. But, not anywhere between there and 2000rpm.
I failed to mention that one of my case fans remains in a tight range of 1135-1160rpm with fan speed control set to Auto in BIOS. It roars (growls, too) to 1575-1600rpm when fan speed control is disabled.
Also, I just RTFM'd and saw under Smart FAN Control Method > Intel(R) QST:
"...This feature requires the installation of Intel Host Embedded Control Interface (HECI) driver from the motherboard driver disk."
Since I didn't recall doing that before, I navigated the Gigabyte CD and found the HECI directory, clicked on Setup.exe and got the following error:
"This computer does not meet the minimum requirements for installing the software. Setup will exit."
Is Intel QST supported on this mobo? If so, is the HECI driver required? And, if so, how do I install HECI?