Hi,

some Days ago I bought a Maximus VI Hero together with a Core i7 4770k. I have a dual boot system with Win 8 64bit and Linux Mint 16 64bit (Ubuntu 13.10).Under Windows I testet everything is working and the benchmarks running fine. AI Suite 3 is setting my CPU to 4.2 Ghz constantly and the CPU gets not warmer than 43°C. Thats fine and I want the CPU to use this frequency all the time.

Than I started Linux (I'm just using Windows for gaming) and recognized that my new system is slower than my old system. A look in /proc/cpuinfo shows me that my CPU is running with 800 Mhz. I recognized this behavior at 8 am today. It's almost midnight and the only thing I found out is that with disabled Turbo and Speedstepping the CPU is running with 3.5 Ghz.

I thought: "ok, fine. then I force the CPU to run at 4.2 Ghz and disable Speedstepping and Turbu"... setting the Core ratio to 42 automatically enables the turbo mode.

Did you remember the time when you switched some jumpers to set the multiplier to 4 and no magic changed your CPU ever to a lower value than 133 Mhz? 🙂

Any suggestions how to fix this issue?

Running without turbo mode in linux is ok for me. But it is not ok to change the bios settings every time I want to play a game...

Thanks for your help.