黄仁勋重申铜技术路线,光学器件股Lumentum(LITE.US)、Coherent(COHR.US)盘前齐挫

智通财经
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智通财经APP获悉,周二盘前交易中,光学器件公司Lumentum(LITE.US)和Coherent(COHR.US)股价走低。此前,英伟达(NVDA.US)CEO黄仁勋重申其服务器机架将采用铜技术。截至发稿,Lumentum盘前跌超3%,Coherent跌近4%,而有源电缆生产商Credo Technology(CRDO.US)则逆势上涨近3%。

在长达两个半小时、涵盖多个主题的GTC演讲中,黄仁勋表示,英伟达在其即将推出的Vera Rubin Ultra和Feynman产品线中将同时采用铜技术和共封装光学技术,两种方案将并行推进。

摩根大通分析师哈兰·苏尔表示,英伟达双线并进的策略符合他的预期,并指出市场对共封装光学技术的期待"超前于下游产业链的准备情况"。

苏尔在给客户的报告中写道:"对于当前的Vera Rubin一代,Oberon机架采用铜互连技术实现NVL72规模的扩展,而光学互连技术则用于扩展至NVL576规模。Spectrum-6 SPX共封装光学以太网交换机已全面投产,该产品与台积电共同开发,(管理层)声称其光学能效比传统可插拔收发器提升5倍,弹性提高10倍。

对于Rubin Ultra(预计2027年推出),Kyber机架架构采用垂直计算托盘,通过中央背板和NVLink铜互连技术连接(最多支持144个GPU),同时还展示了一种基于CPO的NVLink交换机方案,用于机架间互连。

管理层表示,这两种设计将继续并行推进。对于Feynman(预计2028年推出),英伟达将明确提供采用铜互连和CPO互连两种规模扩展方案的Kyber产品,同时推出Spectrum-7(204T, CPO)用于横向扩展。"

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