MSI RX 580 Gaming X different hashrate

[aissar5]

I'm getting different hash rate, 4 MH/s and 29 MH/s with my MSI RX 580 gaming, it's mounted on a Gigabyte Z97.
i tried to swap, flash rom... nothing working

[NotFuzzyWarm]

Ask in the altcoin sections and you might find an answer.
You posted in BITCOIN hardware area and that means ASIC-based miners only.
Also um, maybe look at the very top post of this section 

[bumblebee24]

I'm getting different hash rate, 4 MH/s and 29 MH/s with my MSI RX 580 gaming, it's mounted on a Gigabyte Z97.
i tried to swap, flash rom... nothing working

What did you use to flash your cards? Have you tried to connect the monitor to the 4mhs card? Have you tried with original bios?

[MA3A]

Can you rephrase your question... i have two of these cards and they work flawlessly on both z170 and z97.

[MATHReX]

Well, you have to connect your display cable, i.e. HDMI cable to the GPU connect to the x16 PCIe slot nearest to the CPU. That'll definitely solve your problem.