When I was tuning memory I noticed that SoC Voltage has increased by a huge margin.
I thought about it and went ahead and tested 2 configurations to confirm my hypothesis that manual voltage setting causes SoC Power draw to go up.
1. Stock config, memory set to XMP.
SOC - Auto
VDDP - Auto
VDDG IOD/CCD - Auto
![Auto mode.PNG Auto mode.PNG](https://tpucdn.com/forums/data/attachments/164/164611-f59e7989a678fe6047fc428c82835c88.jpg)
Notice the SoC Power under running Cinebench R20 is arround 5W.
2. Stock config, memory set to XMP. Same voltages set manually in BIOS.
SOC - 1V
VDDP - 0.9V
VDDG IOD/CCD - 0.9V
![Manual setting.PNG Manual setting.PNG](https://tpucdn.com/forums/data/attachments/164/164612-5d3393de050503271fd510aa321e540b.jpg)
Now the SoC power has gone up to around 8W, which stays there even when idle and what actually bothers me that those 3W are actually taken away from CPU Power.
I am running B550 Tomahawk on latest bios.
HWinfo:
![1604924624920.png 1604924624920.png](https://tpucdn.com/forums/data/attachments/164/164608-ac06e301e7cc7386b72ef0b1d9c0e83e.jpg)
![bla.PNG bla.PNG](https://tpucdn.com/forums/data/attachments/164/164609-d6ac05853dad3a0569f6ecb17af54ff7.jpg)
I thought about it and went ahead and tested 2 configurations to confirm my hypothesis that manual voltage setting causes SoC Power draw to go up.
1. Stock config, memory set to XMP.
SOC - Auto
VDDP - Auto
VDDG IOD/CCD - Auto
![Auto mode.PNG Auto mode.PNG](https://tpucdn.com/forums/data/attachments/164/164611-f59e7989a678fe6047fc428c82835c88.jpg)
Notice the SoC Power under running Cinebench R20 is arround 5W.
2. Stock config, memory set to XMP. Same voltages set manually in BIOS.
SOC - 1V
VDDP - 0.9V
VDDG IOD/CCD - 0.9V
![Manual setting.PNG Manual setting.PNG](https://tpucdn.com/forums/data/attachments/164/164612-5d3393de050503271fd510aa321e540b.jpg)
Now the SoC power has gone up to around 8W, which stays there even when idle and what actually bothers me that those 3W are actually taken away from CPU Power.
I am running B550 Tomahawk on latest bios.
HWinfo:
![1604924624920.png 1604924624920.png](https://tpucdn.com/forums/data/attachments/164/164608-ac06e301e7cc7386b72ef0b1d9c0e83e.jpg)
![bla.PNG bla.PNG](https://tpucdn.com/forums/data/attachments/164/164609-d6ac05853dad3a0569f6ecb17af54ff7.jpg)