Mining: RX 580 4GB , HiveOS

Hi,

i just build up a tiny mining rig to get my first experience with mining. I have the following setup:

mainboard: asrock q1900m with celeron j1900

gpu: sapphire nitro+ rx 580 4gb elpida

ram: oem 8gb, says "amd ram"

psu: bequiet systempower 9 400watt

os: hiveos at 8gb usb stick

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i tried out a lot today with mining eth and rvn, but all in all i think the hashrate is too low.

for eth i just get around 5mhs in zombie mode.

for rvn hiveos shows me 10,86mhs@100watt, but the ravenminer explorer shows me up to 13 mhs.

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my oc stats:

core clock 1170

core state –

core voltage 870

mem controller voltage –

mem clock 2150

mem state 2

mem voltage 860

fan –

power limit –

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how can i get a higher hashrate. when i informed about the card i expected a hashrate of around 14.

and how can the hiveos hashrate and the ravenminer hashrate differs that much? which one is valid?

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greetings