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Thanks for answering, I found the solution!!! First I will describe my setup and then what I did to make it work. Alienware m18x R2 Windows 10 pro 64bit Swicks A11 unlocked bios Gtx 980m SLI I7 2960xm 2.9 ghz 16gb 1600 MHz ram It is water cooled, look at my thread here: In my dual power adapter I used this bridge rectifier with 40A and 60volt https://www.mouser.dk/ProductDetail/ON-Semiconductor-Fairchild/MBR4060PT?qs=3csLVnQQLU29uwhOO580Zw== Everything is soldered and the output shows 19,5 volt. First I tried to reinstall windows 10 because I also had problems with my Oculus Rift CV1 loosing too many samples. They had worked flawlessly from the first day I got them until 3 months ago. Also I lost the usb 3.0 functionality in an attempt to fix it, and was stuck at usb 2.0. I was hoping a reinstall would help, also now when I knew how to use throttlestop my CPU would stop throttling to 800 MHz. Oculus rift don't work in SLI but a heavy overclocked gtx 980m can handle it very well. But a reinstall of windows fixed nothing but my usb 3.0 worked again. The maximum power draw was still at 330w - 360w I got frustrated, formatted the computer again and install a fresh windows 7 64 bit with absolutely no preinstalled drivers. I installed all the original drivers from dell and the newest from Nvidia. I ran valley benchmark and accidentally looked at the watt meter which was now showing 565 watt!!! And when activating throttle stop it raised to 630 watt. I also overclock both my gtx 980m 75+ voltage, 271+ core clock 500+ memory clock I should mention my CPU runs at 4.4 ghz but I can get a stable overclock at 4.9 ghz. But 4.4 ghz and 2 heavy overclocked gtx 980m can draw 760watt. But what I suspect to be the whole issue is the chipset driver! Why? Because I had windows 10 on one partition and windows 7 on another partition for music making. Both would never draw more the 360w. Also using the PEG IGFX PEG trick would work until I opened throttle stop and unchecked BD Prochot. When I did that the CPU locked at 4.4 ghz but the GPU started power throttling!. So I did not suspected the Nvidia drivers, it was also not the vbios. Also I tried disabling BD Prochot in bios, it did nothing. So I started suspecting 3 things, it could be a faulty motherboard reading wrong temperature, it could be a faulty CPU or it could be the chipset driver. I am happy I got the power mod to work, now the time will show if my Oculus is working normal again too. P.S. you can build it without a bridge rectifier. I have tested it. But what happens is when you turn on one power supply, the light on the other power supply will also turn on, meaning to are sending power into the other power supply as well. Also I think it felt like the hole on the back of the computer become very hot. I only tested it for a day or two and it worked. But in the long run I don't know if it is a good idea.