Cable Matters 8K DisplayPort 1.4 to HDMI Adapter with 4K@120Hz or 8K@60hz, Unidirectional (DP 1.4) Display Port to HDMI port 8K Cable Adapter in Black, Support for RTX 3080/3090, RX 6800/6900 and More

These work for me perfectly at 120hz 4k hdr.....I had an issues with signal loss and reconnecting intermittentley so bought some new cables from cable matters and bingo works perfectly everytime. I have two of these connection two lg 48 oled tvs to my pc via the rtx graphics card. Dosent work at 4k 120hz with nvidia surround but does as nvidid multi screen and with resize raccoon software all sims are covered

Well I took a chance. Finding a display adapter/cable that could display 120 hz - freesync - HDR on Linux is not easy. VRR included. My previous cable which was DP to HDMI was causing issues and wasn't working properly. My TV has 144hz and is a great display but no Display Port and HDMI standards have ruled out HDMI 2.1 coming to Linux. My TV is basically a 55 inch monitor and with this adapter - it brings everything that is blocked to those of us with perhaps a 7900 xtx AMD card (which I have) to life. I now have a stable display at 120hz and the TV reports that Freesync and HDR are working. I have confirmed they are working and the display looks superb. HDR now fully functions and it's awesome. I have the TCL C6K and it now rivals OLED in contrast and colour reproduction. Previously my display was 120hz with the older cable but HDR was washed out and not functioning properly. VRR was causing blank screens in games and it was unusable. VRR is now working perfectly. This is a must for Linux users. Spread the word.

I have been using the item for 3 days now and works great at 120hz, but make sure you flash the latest firmware first to 7.02.123 the adaptor will get warm which is perfectly normal but won’t be hot to touch, I guess this is because it processing DP to HDMI signals. I have tried CB 102103 and the Ugreen 8K cable DP to HDMI and they both work but they will heat up very quickly on the HDMI end and the screen will start to flick and lose signal. It got so I hot I thought the cable might melt, so I sent them back I hope this helps everyone.

Bad quality product, I'd call it misleading even. This is how black text on a white background looks with it... Like a rainbow. Not only 4:4:4 is not available with this, even RGB IS BROKEN! The cable can't handle the bandwidth and reverts to 422 YCbCr which results in the image seen. Absolutely horrible product. Buy a cable instead of an adapter. I did the same and now both RGB and 444 works properly on my TV.

I bought this for the purpose of being able to use 4K 120hz on my LG C9 with a GTX 1070 to play some Older Games in crisp 4K and it worked straight out of the box for me. All I did afterwards was enable 10 bit colour in the Nvidia Control Panel, as well as enabling HDR when I need it for certain games ( HDR works great with the adapter at 4K 120hz ) . The only issues I've had with the adapter is the screen can sometimes cut out when exiting a game ( Hasn't happened often ) or when using Custom Resolution Utility to setup 1440p which requires a restart to get the image back, GSync also isn't supported with the adapter either. But other than that, couldn't be happier with the result.

Works perfectly for my meta quest 3 headset, easy to use.

Great product, I bought a 3 monitor / 3 computer KVM... I had no idea about Display port adapters being one way only and that not all adapters would work on my kvm.. they worked on my old KVM, but not the new one ..... after much searching I found in the reviews for this, that peoplke had fixed similar problems to mine .. so I bought this ... it worked perfectly ! I would highly reccomend this to convert 8k 60Fps to a 1080p HDMI monitor ... great result !

Disclaimer: 4k 120Hz is not supported out of the box, it will require manual tweaking The process of enabling it is straight forward and requires less than 5 minutes of work. You will require a Windows machine with a DisplayPort to plug in and flash the adapter. The firmware and instructions are found online after searching: DP/USB-C/Thunderbolt 3/4 to HDMI 2.1 4k@120hz RGB4:4:4 10b HDR with Apple Silicon M1/M2/M3 now possible ! The Cable Matters USB-C to HDMI 2.1 solved all my issues. I've long wanted to embrace the one cable life with my Macbook but always had to compromise. All docks I've come across are limited to 4k 60Hz when connected to Macs just like the HDMI port on the device itself. This adapter was outstanding and singlehandedly resolved my issue. Using the firmware update tools and an older firmware version I was able to utilize the DP 1.4 port on my dock and display 4K 120Hz HDR to my TV. If you're planning to replicate this, for the smoothest experience ensure the adapter is the 102101-BLK model and you're using a certified HDMI 2.1 cable. The build quality on the adapter is great, even though it's made of plastic it is durable and doesn't get as warm as other adapters. Highly recommend this adapter!