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PS5的HDMI 2.1接口带宽缩水,不如XBOXS

为了支撑4K 120Hz和8K输出,今年的Xbox Series X以及PS5主机都配备了HDMI 2.1接口。

不过,HDTVTest发烧友Vincent Teoh实测发现(电视机是LG 48寸CX),PS5的HDMI 2.1输出带宽被限制在了32Gbps。HDMI 2.1的理论带宽是48Gbps,也就是说缩水了1/3。

相较之下,Xbox Series X稍微好点,能到40Gbps。

这意味着,两款主机在开启4K 120Hz模式后,PS5仅能呈现YUV 4:2:2色彩编码采样的图像,XSX则是4:4:4,画面表现更优。

当然,PS5的HDMI 2.1并非一无是处,它完整支持了FRL(Fixed Rate Link,固定传输信令),在8K 60Hz和4K 120Hz下的编码效率更高。而Xbox Series X则依然是上一代HDMI 2.0的TMDS(最小化传输差分信令)。

暂时还不清楚PS5的HDMI 2.1带宽限制是硬件芯片问题还是软件锁死,要是后者的话希望索尼可以尽快更新修复。

PS5的HDMI 2.1接口实测残血:带宽缩水了1/3

PS5的HDMI 2.1接口实测残血:带宽缩水了1/3

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