Asus P6T Deluxe Discussion Thread

[unclewebb]

martinakerman: Can you post a screen shot of the i7 Turbo tool and CPU-Z while running LinX? Your bios setting is 1.35625v but your actual core voltage is likely a little less than that.

Turbo throttling is mostly controlled by core voltage and then MHz. At full load, a 5% increase in core voltage should increase power consumption similar to what a 10% increase in frequency (MHz) would cause.

As the maximum TDP is reached, Turbo mode will start to cycle rapidly, hundreds of times a second, on and off. When you really start pushing things hard on the Asus P6T, Turbo mode will mostly remain off. Software that only looks at your multiplier once per second will initially miss what's going on inside your CPU when Turbo cycling first starts to happen.

I have a few ideas to make the i7 Turbo tool better but I'm still waiting for some more feedback. If enough people complain about this then maybe Asus will get off their butts and fix this issue and give users a way to turn off TDP based Turbo throttling like most other motherboards allow you to do.

Post some screen shots so I can have a look and send a link to Asus to get them to wake up and admit that there's a problem here.

ben805: A $15 Kill-a-Watt meter is a great thing to have in the tool box for tracking down issues like this. It should be very clear when power consumption at the wall reaches a certain level that Turbo mode starts to cycle.

Edit: Here's an example of Prime Large FFTs at 4200MHz and 1.392 volts being enough of a load to start Turbo cycling. CPU-Z is still choosing to ignore that something is going on. The core temp is only 63C so that's not the problem.