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Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Cisco’s Silicon One G300 is a 102.4-Tbps switching processor designed to move data through AI and other large data-center networks. It is not a GPU or a standalone computer chip: Cisco plans to integrate it into switches, including announced N9000 and Cisco 8000 systems. Cisco’s published specifications describe its capacity and features; its performance figures are simulations, and the available announcements do not confirm that G300 systems have begun shipping as of October 4, 2026.
What the Silicon One G300 does
The G300 is a switching processor: it directs network traffic between devices rather than performing the AI calculations done by GPUs or other compute processors. Cisco positions it for fixed-form-factor data-center switches serving AI networks, including spine and leaf roles and both scale-out and scale-up traffic.
That distinction matters in AI clusters. Compute accelerators exchange data with one another and with storage; the network must carry those flows while contending with bursts, congestion, and failed or degraded paths. Cisco describes its G300 design as a way to increase switching capacity and manage those traffic conditions. The processor is intended to be sold as part of networking systems, not as a chip for an individual consumer to install.
G300 specifications Cisco has announced
Cisco’s G300 data sheet specifies 102.4 Tbps of full-duplex switching capacity and a 64×1600-GE switching configuration. Cisco’s engineering blog adds support for 1.6T Ethernet ports using integrated 200-Gbps SerDes and says the design can scale to as many as 512 ports. These are Cisco product specifications, not independently measured throughput results.
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- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
| Specification or claim | What Cisco says | How to interpret it |
|---|---|---|
| Switching capacity | 102.4 Tbps, full duplex; Cisco data sheet, 2026 | The stated switching capacity of the processor; not a guarantee that a particular deployed network will deliver that application throughput. |
| Switch configuration | 64×1600 GE; Cisco data sheet, 2026 | A stated design configuration, not a specification for every announced switch model. |
| Ethernet ports and SerDes | 1.6T Ethernet ports with integrated 200-Gbps SerDes; Cisco engineering blog, 2026 | Vendor description of the chip’s port technology. |
| Port scaling | Up to 512 ports; Cisco engineering blog, 2026 | A stated scaling capability; the blog does not establish that every system configuration exposes this port count. |
| Packet buffer | 252 MB; Cisco engineering blog, 2026 | The reported size of the shared on-chip packet buffer. |
How Cisco says G300 handles AI network traffic
Shared packet buffer for bursts
Cisco says the G300 has a fully shared 252 MB on-die packet buffer. In a shared design, any port can use available buffer capacity rather than being limited to a permanently assigned portion. Cisco’s stated rationale is that this can help absorb bursts when traffic arrives unevenly across ports.
Path-based load balancing
Cisco describes load balancing that responds to congestion or link faults by directing traffic along alternate paths. The aim is to avoid leaving flows on a path that has become less suitable. The announcement describes the intended behavior; it does not provide independent field results showing how a particular topology performs.
Rank #2
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- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Telemetry and programmability
Cisco also highlights programmable telemetry for diagnosing flows and network behavior, along with programmability in the chip. Its data sheet identifies RDMA and RoCE v2 use cases. These capabilities are relevant to AI clusters, where operators need to diagnose traffic problems across many interconnected systems, but the exact tools and configuration depend on the switch and software stack.
What Cisco’s performance figures do—and do not—show
Cisco reports a simulated 33% improvement in network throughput in its engineering blog, attributing the result to the larger packet buffer. The February 2026 newsroom announcement describes a 33% increase in network utilization. These are vendor simulation claims, not independent benchmark results.
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- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Cisco also reports a simulated 28% reduction in job-completion time. The engineering blog compares against advanced packet-spray implementations; the newsroom release describes a comparison with simulated non-optimized path selection. Because Cisco describes the comparison differently in the two materials, the figure should be read with that distinction in mind rather than as a result against one universally defined baseline.
Cisco’s newsroom announcement separately says that 100%-liquid-cooled systems combined with new optics could deliver nearly 70% better energy efficiency. That is a claim about the announced system-and-optics configuration, not a measurement of the G300 silicon alone. The cited Cisco materials do not supply independent G300 field measurements or a basis for treating these figures as guaranteed results in a buyer’s deployment.
Rank #4
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- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Where G300 fits in Cisco’s Silicon One portfolio
Cisco identifies its G-Series as its AI scale-switch family. For a basic capacity comparison, Cisco’s portfolio page lists the G200 at 51.2 Tbps, while the G300 data sheet specifies 102.4 Tbps full duplex. The stated G300 figure is twice the G200 figure, but capacity alone does not establish which chip or system is the better choice: network role, switch configuration, optics, software, cooling, and deployment topology also matter.
Cisco announced G300-powered N9000 and Cisco 8000 systems, as well as new optics. The chip’s role is within data-center switching; it should not be confused with equipment selected primarily for connecting separate data centers or with a general-purpose router. Cisco has not provided enough configuration detail in the cited announcements for a complete model-by-model buying comparison.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
When will G300 switches be available?
Cisco’s February 10, 2026 newsroom announcement said the G300, its systems, and optics would ship in 2026. Cisco SVP and General Manager Nick Kucharewski’s engineering blog set a more specific target: first system availability in the second half of 2026. Cisco’s investor presentation also characterized G300 as shipping in calendar 2026. These are company targets, not confirmation that products have shipped.
As of October 4, 2026, the cited material does not establish whether shipments have started or which configurations are orderable in a particular market. Cisco named the Nexus N9364F-SG3 in a customer quotation about a G300 switch, but that mention does not establish the model’s current orderability. Buyers should confirm availability, configuration, and delivery timing with Cisco or a market-specific seller.
What buyers should verify before evaluating a G300 system
The chip’s headline capacity is only one input to a network purchase. Since Cisco has announced systems rather than a consumer chip sale, evaluation should focus on the actual switch configuration and deployment:
Quick Recap
- System model and port layout: Confirm the switch model, supported port speeds and counts, and which configurations are available for the intended topology.
- Software and operations: Establish which network operating system, telemetry, and management features are included and how they fit existing operations.
- Optics and connectivity: Verify supported optics and their compatibility with the selected system and the links on both ends.
- Cooling and power: Compare the actual air- or liquid-cooled system configuration and its documented power requirements; do not apply Cisco’s system-level efficiency claim to the chip by itself.
- Evidence and economics: Request deployment-relevant test results, power figures, pricing, and delivery commitments. Cisco’s published simulations do not substitute for independently verified results in the buyer’s workload and topology.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
