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Journeyman III
Journeyman III

only 30 Hz at ultra HD with RX 470

I have a 4K Philips monitor (BDM4065UC 40", 4k) and bought a Sapphire RX 470 this week.

Without any driver i am at 64 Hz at Ultra HD (3840*2160)

After installing 16.9.2 (or 16.9.3 beta) i only have 30 Hz at that resolution.

It is not a matter of the cable (high quality DP cable). I had a Geforce 980 Ti before and there were no problems. Even with the Intel CPU graphics i had 60 Hz at ultra hd.

This seems to be a driver problem?

How can i solve this?

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17 Replies
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Forerunner
Forerunner

Re: only 30 Hz at ultra HD with RX 470

Are you aware that the RX-470 is a step down in performance from the 980ti?

GPU Hierarchy - Comparison of Graphics Cards for Gaming

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Big Boss
Big Boss

Re: only 30 Hz at ultra HD with RX 470

Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3200c16d kit, Aorus nvme gen4 1tb,
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Journeyman III
Journeyman III

Re: only 30 Hz at ultra HD with RX 470

@arcticwind

i am aware, that the 470 is a step down - i don't have the time for hardcore gaming, so the 470 with full hd power is enough in the near future

@goodplay

ofc the monitor is already on dp 1.2

i quote myself :-) "It is not a matter of the cable (high quality DP cable). I had a Geforce 980 Ti before and there were no problems. Even with the Intel CPU graphics i had 60 Hz at ultra hd."

terrible drivers so far - i had only 24 hz an hour ago even on 1080p

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Big Boss
Big Boss

Re: only 30 Hz at ultra HD with RX 470

Sometimes people forget to recheck settings after(new card/driver/windows install will sometimes reset to default native res.).

What OS ?.

amdmatt​ may have other suggestions.

Ryzen 5 5600x, B550 aorus pro ac, Hyper 212 black, 2 x 16gb F4-3200c16d kit, Aorus nvme gen4 1tb,
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Journeyman III
Journeyman III

Re: only 30 Hz at ultra HD with RX 470

OS is Windows 10 Pro.

Yesterday evening it worked once. 60 Hz at ultra hd, but it is now at 30 hz again.

I installed the tool from this thread:

https://www.monitortests.com/forum/Thread-AMD-ATI-Pixel-Clock-Patcher

The custom monitor setting in the crimson driver won't help too, since it tells me, that my monitor won't support the resolution with the 59 / 60 hz and is not compatible (which of course it is)

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Journeyman III
Journeyman III

Re: only 30 Hz at ultra HD with RX 470

update:

i started in safe mode and uninstalled all old driver with the "display driver uninstaller"

then i intalled the newest (beta) crimson driver

still no change :-(

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Challenger
Challenger

Re: only 30 Hz at ultra HD with RX 470

The 980 doesn't fully support Full fat UHD playback, this is well documented, it compresses the colour space, it has limted bandwidth, 10gbps I think.

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Elite
Elite

Re: only 30 Hz at ultra HD with RX 470

Did you also install the driver for your monitor? If not,  you can download it here: https://www.download.p4c.philips.com/files/b/bdm4065uc_00/bdm4065uc_00_dw8_eng.zip

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Journeyman III
Journeyman III

Re: only 30 Hz at ultra HD with RX 470

The monitor driver is also installed.

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