Amazon.com: GIGABYTE nVidia GeForce RTX 4090 GAMING OC 24G Video card, PCI-E 4.0, GDDR6X, 3 x DP 1.4, 1 x HDMI 2.1 : Electronics
Graphics Card with HDMI 2.1 Technology: What You Need to Know About the New HDMI UpdateWhat is Graphics Card for Gaming?What is the HDMI 2.1 Specification?
SOYO NVIDIA GeForce RTX3070 GDDR6 RTX3070Ti GDDR6X 12G Graphics Card HDMI 2.1-Compatible DP*3 Game Card 256Bit Desktop PC GPU
Are there graphics cards with multiple HDMI 2.1 ports, preferably 4 ports? - Quora
YUAN SC750N1-L 8K60 HDMI 2.1 Video Capture Card SC750N1-L