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First update of the README.

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Thibault Heckel
2022-11-10 23:32:35 +01:00
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README.md
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# amdgpu-overclock
## Increase performances of your AMD GPU on linux system:
- Download & install [amdgpu-clocks](https://github.com/sibradzic/amdgpu-clocks) (go for the "manual installation");
- Set `amdgpu.ppfeaturemask=0xffffffff` as boot kernel parameter ;
- Check initial status of your gpu (`card0` generally) with `cat /sys/class/drm/card0/device/pp_od_clk_voltage`
*Example output*
```
OD_SCLK:
0: 500Mhz
1: 2580Mhz
OD_MCLK:
0: 97Mhz
1: 1000MHz
OD_VDDGFX_OFFSET:
0mV
OD_RANGE:
SCLK: 500Mhz 3000Mhz
MCLK: 674Mhz 1075Mhz
```
- Retrieve also all power-profile-modes available `cat /sys/class/drm/card0/device/pp_power_profile_mode`
*Example output*
```
PROFILE_INDEX(NAME) CLOCK_TYPE(NAME) FPS MinFreqType MinActiveFreqType MinActiveFreq BoosterFreqType BoosterFreq PD_Data_limit_c PD_Data_error_coeff PD_Data_error_rate_coeff
0 BOOTUP_DEFAULT :
0( GFXCLK) 0 5 1 0 4 800 4587520 -65536 0
1( SOCCLK) 0 5 1 0 1 0 3276800 -65536 -6553
2( MEMLK) 0 5 1 0 4 800 327680 -65536 0
1 3D_FULL_SCREEN :
0( GFXCLK) 0 5 0 1600 4 650 5242880 -3276 0
1( SOCCLK) 0 5 1 0 1 0 655360 -65536 -6553
2( MEMLK) 0 5 4 850 4 800 327680 -65536 0
2 POWER_SAVING :
0( GFXCLK) 0 5 1 0 3 0 5898240 -65536 0
1( SOCCLK) 0 5 1 0 1 0 3407872 -65536 -6553
2( MEMLK) 0 5 1 0 3 0 1966080 -65536 0
3 VIDEO :
0( GFXCLK) 0 5 1 0 4 500 4587520 -65536 0
1( SOCCLK) 0 5 1 0 1 0 3473408 -65536 -6553
2( MEMLK) 0 5 1 0 4 500 1966080 -65536 0
4 VR :
0( GFXCLK) 0 5 4 1000 1 0 3276800 0 0
1( SOCCLK) 0 5 1 0 1 0 655360 -65536 -6553
2( MEMLK) 0 5 1 0 4 800 327680 -65536 0
5 COMPUTE*:
0( GFXCLK) 0 5 4 1000 1 0 3932160 0 0
1( SOCCLK) 0 5 1 0 1 0 655360 -65536 -6553
2( MEMLK) 0 5 4 850 3 0 327680 -65536 -32768
6 CUSTOM :
0( GFXCLK) 0 5 1 0 4 800 4587520 -65536 0
1( SOCCLK) 0 5 1 0 1 0 3276800 -65536 -6553
2( MEMLK) 0 5 1 0 4 800 327680 -65536 0
```
- Go for the **COMPUTE** n°**5** power profile to get maximum performances ;
- Create the file `/etc/default/amdgpu-custom-states.card0` ;
*Configuration example*
> You better read the amdgpu-clocks shell script to understand & find some useful variables.
```
# GPU Clock
OD_SCLK:
0: 500Mhz
1: 2580Mhz
# Compute
FORCE_POWER_PROFILE: 5
# Watt
FORCE_POWER_CAP: 332000000
FORCE_PERF_LEVEL: manual
```
- Enable the amdgpu-clocks systemd service ;
- Enjoy 99% GPU usage in games now :).