I’ve been doing some research trying to find the best way to overlock a XFX AMD Radeon RX 570. Before starting we start check the clocks to make sure our adjustment are properly done.
my default output is
GFX Clocks and Power: 1750 MHz (MCLK) 1286 MHz (SCLK) 90.63 W (VDDC) 16.0 W (VDDCI) 117.181 W (max GPU) 118.165 W (average GPU)
First we’ll overclock the core frequency, if we cat
output is 0 which means no overclocking
The way this works, if I enter a number, the core frequency is over clocked by the number entered as a %, we can enter a number between 0 and 20, if I put in 5 that means 5% over clock from the GPU’s core frequency. Example
echo 5 > /sys/class/drm/card0/device/pp_sclk_od
Same thing works for memory over clocking
also returns the default value of 0, no overclocking, now lets see what we can do.
echo 5 > /sys/class/drm/card0/device/pp_mclk_od
Now checking the clock speeds of our GPU afterwards
GFX Clocks and Power: 1837 MHz (MCLK) 1337 MHz (SCLK) 85.18 W (VDDC) 16.0 W (VDDCI) 124.50 W (max GPU) 113.120 W (average GPU)
that looks like it worked, I pushed mine a little more
echo 10 > /sys/class/drm/card0/device/pp_sclk_od
This gives me
0: 300Mhz 1: 588Mhz 2: 952Mhz 3: 1076Mhz 4: 1143Mhz 5: 1208Mhz 6: 1250Mhz 7: 1414Mhz *
What I find is interesting, we started with the hashrate of 22Mh/s and it didn’t incrase
ETH: GPU0 22.108 Mh/s, GPU1 22.125 Mh/s
So i’m still investigating what to do.
I’ll let you know once I find another way to overclock. I’m thinking the other option is to mod the bios like other people are doing but I just don’t normally recommend changing the bios.