Unverified85% confidenceDecision RuleTime unknown
万兆场景若两台设备近距离直连或有光纤布线，SFP+光口方案比10G电口发热低约一半、功耗更省，配DAC铜缆短距离连接性价比高于万兆电口网卡
1
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85%
Confidence
Long-term
Relevance
-
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Unverified万兆电口(10GBASE-T)网卡发热和功耗显著高于万兆光口(SFP+)，短距离机架内互联建议用SFP+光模块/DAC线，长距离布线或复用现有网线才选电口86% similarUnverified万兆速率跑铜缆(10GBASE-T)需CAT6A网线且距离≤55米(CAT6)，长距离或省电应选SFP+光模块方案；SFP+网卡功耗和发热明显低于万兆电口网卡80% similarUnverifiedNAS/多机万兆互联优先选带2个万兆SFP+光口的2.5G交换机，SFP+可插DAC铜缆或光模块，比RJ45万兆功耗低、发热小；纯电口万兆交换机满载单口功耗可达3-4W易过热80% similarUnverified线缆越粗越短传输越稳定，长度与速率成反比：需要2m以上又要40Gbps只能选光纤主动线（价格高且弯折敏感），性价比方案是控制在1m内78% similarUnverified端口速率与散热的权衡：万兆电口（10GBASE-T）发热远高于万兆光口（SFP+），万兆电口机型几乎都需主动散热风扇，追求静音应优先选SFP+光口方案75% similar
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