Unverified88% confidenceDecision RuleTime unknown
追求4K60HDR无损采集或多路视频源同时采集需选PCIe内置卡（如Elgato 4K60 Pro），PCIe带宽远高于USB，且CPU占用更低，但只能装台式机不能用于笔记本
1
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88%
Confidence
Long-term
Relevance
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Unverified低配笔记本(轻薄本无独显)不建议搭配4K60采集设备，采集时CPU软编码占用极高会导致直播掉帧，此类设备应选带硬件编码的采集卡83% similarUnverified笔记本电脑不要选内置PCIe采集卡（无扩展插槽），应选USB3.0外置卡；反之台式机长期高强度直播优先PCIe内置卡，延迟更低且不占USB带宽81% similarUnverifiedUSB采集卡受USB带宽限制，1080P60通常是无损上限；若需要真正无延迟的1080P120或4K60直通，必须选PCIe内置采集卡（如4K60 Pro）而非USB外置卡81% similarUnverified分辨率/帧率越高越吃总线带宽和CPU：外置USB卡做4K60直播时若开硬件编码可省CPU，但便宜的USB卡多为软件编码，会导致主机CPU占用飙高、直播掉帧80% similarUnverified带独立硬件编码芯片的采集卡（如Elgato 4K60 Pro MK.2）录制时CPU占用可低于5%，而依赖软件编码的低端卡会占用20%以上CPU，直播同时打游戏时应优先硬件编码型号79% similar
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