Nvidia Corp has begun shipping next-generation co-packaged optics (CPO) switches developed with Taiwan Semiconductor Manufacturing Co (TSMC, 台積電), as the US tech giant seeks to tackle data transmission and power consumption challenges in artificial intelligence (AI) data centers, a Nvidia executive said yesterday.
The company has begun shipping its new Spectrum-X CPO switch to select partners, Nvidia senior vice president of networking Gilad Shainer said at the company’s GTC event in Taipei.
The switch uses Nvidia’s most advanced CPO technology and has a throughput of up to 400 terabits per second, he said, adding that production capacity is expected to expand in the second half of this year.
Photo: CNA
CPO switches are networking devices that integrate optical engines — components that convert electrical signals into optical signals — directly with switch chips, which route data between servers and processors, to transmit data more efficiently while reducing power consumption.
The push comes as AI factories rapidly expand their computing capacity, making bandwidth and power consumption between server racks in data centers key factors affecting AI performance, Shainer said.
Those server racks house equipment such as servers, graphics processing units (GPUs) and switches that process and transmit data in AI data centers.
Nvidia is pushing ahead with CPO technology as a key way to maximize the performance-to-power ratio in AI factories, Shainer said.
CPO technology allows Nvidia to move beyond conventional designs that place optical transceivers outside switches by integrating and packaging optical engines directly with switch chips, thereby minimizing power consumption and transmission distances, he said.
TSMC has played a crucial role in the packaging process, with the two companies working closely to adopt the chipmaker’s new COUPE, or compact universal photonic engine, silicon photonics packaging platform, Shainer said.
The innovation allows optical engines, switch chips and related components to be packaged together in a highly reliable and flexible way, paving the way for volume production, he added.
Also at GTC Taipei, Shar Narasimhan, Nvidia’s director of product marketing for data center GPUs and AI training, said Taiwan’s technology ecosystem has been a great partner in enabling many remarkable technologies that allow the company to scale up the new systems on display.
He said Taiwan’s supply chain has two core strengths — being "hard-working" and having "very advanced technology" — making it an indispensable partner for Nvidia.
With global demand for AI computing power already far exceeding available computing capacity, Nvidia needs Taiwan’s ecosystem to help expand production for AI factories around the world, Narasimhan said.
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