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Cable Standards Showdown – 2025 Edition.
Here’s how the latest connection standards stack up:
HDMI 2.2 vs DisplayPort 2.1b vs Thunderbolt 5 vs GPMI
🎯 Use Case Overview
StandardBest For
- HDMI 2.2:
TVs, consoles, home theaters
- DisplayPort 2.1b:
PCs, monitors, gaming rigs
- Thunderbolt 5:
Laptops, hubs, external GPUs
- GPMI:
All-in-one A/V + power setups (early adoption)
📊 Bandwidth
StandardMax Bandwidth
- HDMI 2.2:
96 Gbps
- DisplayPort 2.1b:
80 Gbps (UHBR20, uncompressed)
-Thunderbolt 5:
80 Gbps bidirectional / 120 Gbps one-way (Bandwidth Boost)
- GPMI:
96 Gbps (Type-C), 192 Gbps (Type-B)
⚡ Power Delivery
StandardMax Power over Cable
- HDMI 2.2:
❌ None
- DisplayPort 2.1b:
❌ None
- Thunderbolt 5:
✅ Up to 240W (USB-C PD 3.1)
- GPMI:
✅ 240W (Type-C), 480W (Type-B)
🎥 Video Capability
StandardSample Resolutions
- HDMI 2.2:
4K@240Hz, 8K@240Hz, 12K@120Hz (compressed)
- DisplayPort 2.1b:
Up to 16K@60Hz with DSC
- Thunderbolt 5:
Dual 8K@60Hz, Triple 4K@144Hz
- GPMI:
Up to 8K/10K+ (bidirectional), designed for future XR/AR
🔧 Key Features
- HDMI 2.2:
LIP (sync), VRR, ALLM, eARC, Dynamic HDR, QMS, SBTM
- DisplayPort 2.1b:
Multi-stream (MST), DSC compression, HDR
- Thunderbolt 5:
USB4 v2, PCIe Gen4, Thunderbolt Share
- GPMI:
Combines video, audio, data, network & power; uses ADCP protection
🔌 Connector Type
StandardConnector
- HDMI 2.2:
HDMI
- DisplayPort 2.1b:
DisplayPort
- Thunderbolt 5:
USB-C
- GPMI:
USB-C (Type-C) or proprietary (Type-B)
🌍 Adoption Status
- HDMI 2.2:
Released June 2025, wide adoption expected
- DisplayPort 2.1b:
Already rolling out in high-end GPUs and monitors
- Thunderbolt 5:
Appearing in new laptops and docks
- GPMI:
Backed by Chinese OEMs (TCL, Huawei, Hisense); adoption still early
✅ Summary
- HDMI 2.2 →
Best for AV setups and TVs
- DisplayPort 2.1b →
Best for high-res PC displays
- Thunderbolt 5 →
Best for mobile users needing speed + power
- GPMI →
Promising, but depends on future adoption
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