[SOLVED] Can't get 75hz on my UHD 630

[warhammer23]

As per the title, I can't seem to make this Dell Pc output 75hz on my 75hz FHD screen; only 60hz.

While waiting to build my new pc, I got myself a Dell MFF 7070 with an i5 9500T to keep me going. From Intel's & Dell's website, the CPU supports up to 4k@24hz on HDMI and 4k@60hz on DP, so plenty for my screen.

This particular 7070 has 2x DP ports at the back. Also the CPU checks DP 1.2 and HDMI 1.4 protocols.

My screen is an Acer KG271 FHD 75hz with 2x HDMI and 1xVga. Before this I had an Asus Strix GTX 1080 and the 75hz @ 1080p worked, of course, on the same HDMI cable I'm using now(+an dp to hdmi adapter since DP only on the Dell).

I tried:
-2 generic HDMI cables on a generic DP to HDMI adapter, nothing.
-All the drivers, up to date.
-Tried a custom resolution from Intel's app and from Windows, no luck

So I'm wondering, do I need a higher tier DP to HDMI cable or it's something else I'm missing?

Thank you.

 

[boju]

Do you know if the adapter is type 1 or 2? Type 1 is limited to 60Hz. Only way of knowing if it is type 2 is if the advertised resolution supports 4k.

Guide to Display Cables / Adapters (v2)

Glenwings Guide to Display Cables / Adapters This is a guide intended to assist with the selection of cables and adapters. It covers the different types of DisplayPort, HDMI, DVI, VGA, and USB-C cables, as well as every possible combination of adapters between these interfaces. This guide feature...

linustechtips.com

 

[white.a.drew]

As per the title, I can't seem to make this Dell Pc output 75hz on my 75hz FHD screen; only 60hz.

While waiting to build my new pc, I got myself a Dell MFF 7070 with an i5 9500T to keep me going. From Intel's & Dell's website, the CPU supports up to 4k@24hz on HDMI and 4k@60hz on DP, so plenty for my screen.

This particular 7070 has 2x DP ports at the back. Also the CPU checks DP 1.2 and HDMI 1.4 protocols.

My screen is an Acer KG271 FHD 75hz with 2x HDMI and 1xVga. Before this I had an Asus Strix GTX 1080 and the 75hz @ 1080p worked, of course, on the same HDMI cable I'm using now(+an dp to hdmi adapter since DP only on the Dell).

I tried:
-2 generic HDMI cables on a generic DP to HDMI adapter, nothing.
-All the drivers, up to date.
-Tried a custom resolution from Intel's app and from Windows, no luck

So I'm wondering, do I need a higher tier DP to HDMI cable or it's something else I'm missing?

Thank you.

I would try a new cable over anything's else to start minus checking to see if the computer drivers are up to date from manufacturer site

https://www.dell.com/support/home/en-us/product-support/product/optiplex-7070-desktop/drivers

 

[warhammer23]

Do you know if the adapter is type 1 or 2? Type 1 is limited to 60Hz. Only way of knowing if it is type 2 is if the advertised resolution supports 4k.

Guide to Display Cables / Adapters (v2)

Glenwings Guide to Display Cables / Adapters This is a guide intended to assist with the selection of cables and adapters. It covers the different types of DisplayPort, HDMI, DVI, VGA, and USB-C cables, as well as every possible combination of adapters between these interfaces. This guide feature...

linustechtips.com

Thank you very much. I have no idea, I have had it for a while. Doesn't say anything on it no branding etc. So chances are this might be the reason. Will order a new one and see what happens.

 

[boju]

Make sure to check DP to Hdmi suggestions by Glenwing on that site. Put in DP to Hdmi in fields if haven't done already.

 

[warhammer23]

Ok, borrowed another dp to hdmi adapter from a friend (some chinese 'quicent' brand) which was newer and voila! 75hz is back. So yes, you were right @boju , the adapter I had was way tier 1.

Thank you again!