Does setting DPM matter if you manually set core clock?

AMD Cards
1

I have a rig with several RX 570 8GB. All of them have clocks set to 1050 in the worker settings. Right now I’m trying to fiddle with DPM settings but changing these digits doesn’t seem to change anything. amd-info gives me the following:

=== GPU 2, 06:00.0 Radeon RX 570 8192 MB ===
  Bios: 113-D0003400_100, UUID: M769E0120418
  Core: 1050 MHz 1006mV, Mem: 2050 MHz 900mV, VDDCI: 900mV, REF: 5
  PerfCtrl: manual, Load: 100%, MemLoad: 100%, Power: 99.144 W, Cap: 120 W
  Core: 60°C, Fan: 80%, RPM: 2350
  Core state: 3, clocks: 300 588 952 1050* 1106 1168 1209 1244
  Mem  state: 2, clocks: 300 1950 2050*
  PCIE Link speed: GEN2 (5.0GT/s), PCIE Link width: x1
  Memory total: 8192.00 MB, used: 4486.90 MB, free: 3705.10 MB, type: Micron MT51J256M32
  VDDC: 1006mV, VDDCI: 900mV

=== GPU 3, 0a:00.0 Radeon RX 570 8192 MB ===
  Bios: 113-D0003400_100, UUID: M76AL0120720
  Core: 1050 MHz 993mV, Mem: 2050 MHz 900mV, VDDCI: 900mV, REF: 5
  PerfCtrl: manual, Load: 100%, MemLoad: 100%, Power: 93.226 W, Cap: 120 W
  Core: 54°C, Fan: 80%, RPM: 2386
  Core state: 2, clocks: 300 588 1050* 1041 1106 1168 1209 1244
  Mem  state: 2, clocks: 300 1950 2050*
  PCIE Link speed: GEN2 (5.0GT/s), PCIE Link width: x1
  Memory total: 8192.00 MB, used: 4486.90 MB, free: 3705.10 MB, type: Micron MT51J256M32
  VDDC: 993mV, VDDCI: 900mV

I suppose DPM only matters if you let the GPU decide its own clock rate without setting it fixed. Am I right?

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