Comparison

8K Non-HDBaseT HDMI Extenders

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。

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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.

NPG-EX50-8K 9.2

HDMI 2.1 Extender over CAT6

NPG-EX50C-8K 8.6

Compact 8K Extender, slim chassis

NPG-EX50KVM-18G 8.8

4K KVM Extender with USB 2.0 hub

PT-CT-HDMI-S-8K 8.5

3×1 HDMI 2.1 Switcher