Comparison
四款 HDMI 2.1 / KVM 选手逐项实测:谁能在 40 米认证铜缆上稳稳跑住 8K@60 4:4:4。
同一台码型发生器、同一卷 40.2 米认证 CAT6、同一套 8K60 压力图案。蓝色标记为每个对比项的 bench 赢家——全部是实测数据,不是数据表抄录。
| Specification |
Editor’s choice
NPG-EX50-8K HDMI 2.1 Extender over CAT6 9.2 $189 |
NPG-EX50C-8K Compact 8K Extender, slim chassis 8.6 $159 |
NPG-EX50KVM-18G 4K KVM Extender with USB 2.0 hub 8.8 $229 |
PT-CT-HDMI-S-8K 3×1 HDMI 2.1 Switcher 8.5 $99 |
|---|---|---|---|---|
| Max resolution | 8K@60 / 4K@120 | 8K@60 / 4K@120 | 4K@60 4:4:4 | 8K@60 / 4K@120 |
| Bandwidth | 48Gbps (FRL) | 48Gbps (FRL) | 18Gbps (TMDS) | 48Gbps (FRL) |
| Cable run | 40m / 131ft CAT6 | 35m / 115ft CAT6 | 50m / 164ft CAT6 | n/a |
| KVM / USB | ✕ | ✕ | 4-port USB 2.0 | ✕ |
| eARC passthrough | ✓ | ✕ | ✕ | ✓ |
| HDR formats | HDR10+, Dolby Vision | HDR10, Dolby Vision | HDR10 | HDR10+, Dolby Vision |
| HDCP | 2.3 | 2.3 | 2.2 | 2.3 |
| PoC (single PSU) | ✓ | ✓ | ✓ | USB-C powered |
Blue row-marks = bench winner. Scroll sideways on smaller screens; the spec column stays pinned.
HDMI 2.1 Extender over CAT6
Compact 8K Extender, slim chassis
4K KVM Extender with USB 2.0 hub
3×1 HDMI 2.1 Switcher