Why Do Graphics Cards Have Only One HDMI Port?
The impact of HDMI vs DisplayPort competition on graphics card designs.
1HDMI's Ubiquity
HDMI is one of the most widely adopted audio/video standards in consumer electronics. According to HDMI LA, 14 billion HDMI-enabled devices have shipped since 2002. HDMI 2.2 was announced in 2025 with devices expected by 2027. You can find HDMI ports on devices ranging from Raspberry Pi to Samsung's 130-inch The Wall display.
2HDMI in Graphics Cards History
The first graphics cards with HDMI ports launched in 2006. Modern cards typically feature one HDMI and 2+ DisplayPorts. This design balances cost, user needs, and engineering. DisplayPort has become the preferred choice for gamers and professionals due to its technical advantages.
3DisplayPort Technical Superiority
DisplayPort is optimized for PC monitors. It can carry video, audio, data, and power over a single cable. Multi Stream Transport enables multi-monitor setups. It supports higher refresh rates and VESA Adaptive Sync. Nvidia's G-Sync only works over DisplayPort, making it essential for gaming setups.
4HDMI as Compatibility Port
HDMI serves mainly as a compatibility port on graphics cards. DisplayPort's bandwidth roadmap has consistently outpaced HDMI. While HDMI 2.2 promises 96 Gbps bandwidth, it will require certified cables and ports. DisplayPort 2.1 already supports three 4K monitors at 90Hz without compression.
5Cost Considerations
HDMI ports are more expensive than DisplayPort. They require more PCB space and additional hardware. HDMI 2.1 ports cost more than HDMI 2.0 versions. As a licensed standard, HDMI requires annual fees and per-device royalties. For example, Sparkle pays about $1 per HDMI port on its Intel Arc GPUs.
6Licensing and Certification
HDMI 2.1 and 2.2 will increase licensing costs further. Mandatory compliance testing adds to expenses. DisplayPort is an open, royalty-free standard managed by VESA members. This gives manufacturers significant cost advantages when implementing DisplayPort.
7Manufacturing Economics
Sparkle's Taiwan factory produces over 1,000 Intel Arc GPUs daily. On a $100-$110 card with 4 HDMI ports, $4 goes just to HDMI costs. The additional costs of HDMI 2.2 will likely maintain the trend of limited HDMI ports on graphics cards.
8Future Outlook
HDMI 2.2's bandwidth advantage may have limited impact until resolutions beyond 4K become mainstream. DisplayPort's roadmap has historically outpaced HDMI. The next DisplayPort version is expected to surpass HDMI 2.2, reinforcing manufacturers' preference for DisplayPort in graphics cards.
Original article: SlashGear — Ekran Kartlarında Neden Tek HDMI Portu Var?