Macs and dpi issues

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Raymond Lin said:
New, the latest one.
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Hmm, That is a HDMI 2.1 port so should have no issue going up to 120/165hz at that res. I've had various problems with HDMI cables. I was recommended not to go shorter than 2 meter cable length, and certified. The ones I use are Cable Matters 48Gbps
 
eurokage said:
Hmm, That is a HDMI 2.1 port so should have no issue going up to 120/165hz at that res. I've had various problems with HDMI cables. I was recommended not to go shorter than 2 meter cable length, and certified. The ones I use are Cable Matters 48Gbps
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Mines a 1 meter Kenable certified 2.1 HDMI cable and I have no problems with my monitor.
 
eurokage said:
Hmm, That is a HDMI 2.1 port so should have no issue going up to 120/165hz at that res. I've had various problems with HDMI cables. I was recommended not to go shorter than 2 meter cable length, and certified. The ones I use are Cable Matters 48Gbps
Click to expand...

I am going to get a UGREEN 0.5m one and try again.

UGREEN HDMI 2.1 Cable Certified 10K 8K 4K 1440P@240/165/120Hz eARC HDR Dolby Vision Atmos HDCP 2.3 48Gbps​

 
nlel1975 said:
This is the one I got and have no problems…

https://www.kenable.co.uk/en/hdmi-cables/hdmi-21-cables/certified-hdmi-21-cables/
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Ah poo....I just checked the spec of the monitor.

HUAWEI MateView - HUAWEI Canada

Canada. HUAWEI MateView, a monitor that enhances every aspect of your experience. Presents elegance in design and a stunning 4K+ display. Enables smart work via wireless connectivity to multiple devices.
consumer.huawei.com consumer.huawei.com

Looks like I need a HDMI to DP cable.

USB-C-to-USB-C and MiniDP-to-DP cables are also provided as standard. Actual display effect is 1.07 billion colours when using USB-C or MiniDP. Due to the theoretical bandwidth limitation of HDMI 2.0, the maximum resolution/refresh rate supported by the HDMI 2.0 interface is 3840 x 2560@50 Hz. MiniDP and USB-C interfaces are recommended.
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Raymond Lin said:
Ah poo....I just checked the spec of the monitor.

Looks like I need a HDMI to DP cable.
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Yeah my old 27” 144 Hz 4K monitor only supported HDMI 2.0 I had to use a DisplayPort cable to get 120 Hz. I just used the DisplayPort to DisplayPort cable included with my monitor as my graphics card had both DisplayPort and HDMI ports.
 
nlel1975 said:
I'm running my Mac mini M4 at 3008 x 1692 120 Hz on my Dell 4K monitor. It looks sharper than my Windows 11 machine on the same monitor at 3840 x 2160 with 150% scaling. The only issue I had was that at 240 Hz the monitor wouldn't come out of standby properly so had to set it to 120 Hz.
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One thing I have noticed with my new USB-C to DisplayPort cable, is that I can now run 3008 x 1692 at 240 Hz whereas before with my HDMI 2.1 cable I had to set it to 120 Hz as it wouldn't come out of monitor standby at 240 Hz. It now comes out of standby at 3008 x 1692 240 Hz.

I thought this was a limitation of the HiDPI Retina resolution but it might have been the cable. I also noticed that I now have VRR option of (48-240 Hertz) whereas before with the HDMI 2.1 cable I only had VRR option of (48-120 Hertz).

Maybe the USB-C to DisplayPort cable is better but if I set the resolution to 4K 3840x2160 240 Hz with the HDMI 2.1 cable it came out of standby no problem which suggests there was nothing wrong with the cable.

Here's the USB-C to DisplayPort cable I bought if you are in the market for one...

https://www.kenable.co.uk/en/usb-cables-adapters/usb-type-c-cables/usb-c-to-displayport-cables/
 
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