AMD Instinct MI300 vs NVIDIA Switch 2 GPU Comparison

FAQ

Q: What are the core architectural differences between the AMD Instinct MI300 and the NVIDIA Switch 2 GPU?

A: The AMD Instinct MI300 uses the CDNA 3.0 architecture on a 5 nm TSMC process with 153,000 million transistors on a 1017 mm² die. The NVIDIA Switch 2 GPU uses the Ampere architecture on Samsung's 8 nm process with a 200 mm² die and an unknown transistor count.

Q: How do the memory subsystems compare?

A: The Instinct MI300 has 128 GB of HBM3 memory on a 8192-bit bus, delivering 5.32 TB/s of bandwidth. The Switch 2 GPU has 12 GB of LPDDR5X memory on a 128-bit bus, delivering 102.4 GB/s of bandwidth.

Q: Which GPU has higher raw compute throughput?

A: The Instinct MI300 delivers 47.87 TFLOPS FP32 and 47.87 TFLOPS FP16 (1:1). The Switch 2 GPU delivers 4.301 TFLOPS FP32 and 8.602 TFLOPS FP16 (2:1). The MI300 leads in both metrics.

Q: What are the clock speed differences?

A: The Instinct MI300 has a 1000 MHz base clock and 1700 MHz boost clock, with memory at 1300 MHz (5.2 Gbps effective). The Switch 2 GPU has a 561 MHz base clock and 1400 MHz boost clock, with memory at 800 MHz (6.4 Gbps effective).

Q: Do both GPUs support standard graphics APIs?

A: No. The Instinct MI300 lists N/A for DirectX, OpenGL, and Vulkan, indicating no display or graphics API support. The Switch 2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What are the physical and power specifications?

A: The Instinct MI300 has a 600 W TDP with 2x 8-pin power connectors and a suggested PSU of 1000 W. The Switch 2 GPU has a 40 W TDP, no power connector listing, and no suggested PSU. The MI300 measures 267 mm by 111 mm; the Switch 2 GPU measures 272 mm by 116 mm by 14 mm.

The Verdict

The data shows two fundamentally different products aimed at entirely separate workloads. The AMD Instinct MI300 is a compute-oriented accelerator with no display outputs and no graphics API support, designed for data center tasks where raw FP32 and FP16 throughput, massive memory capacity, and immense bandwidth are critical. The NVIDIA Switch 2 GPU is a console-class graphics processor with full DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 support, built for rendering in a low-power mobile form factor.

The Instinct MI300 is the clear choice for computation-heavy workloads that can leverage its 47.87 TFLOPS FP32 and 128 GB HBM3 memory. Its 5.32 TB/s bandwidth and 8192-bit bus provide a data path that the Switch 2 GPU cannot approach. The Switch 2 GPU, with its 12 GB memory and 102.4 GB/s bandwidth, is suited for graphics rendering tasks where its 12 RT cores and 48 tensor cores enable hardware-accelerated ray tracing and AI features within a 40 W power envelope.

The recorded data indicates the MI300 wins in every raw compute and memory metric, while the Switch 2 GPU wins in power efficiency, graphics API compatibility, and compact physical design. Neither GPU is a substitute for the other. The MI300 is for server installations, and the Switch 2 GPU is for embedded or console use cases.

Head-to-Head Benchmarks

The head-to-head benchmark data is empty, so the comparison relies on the technical specifications recorded in the database. The most significant margin is in FP32 throughput: the Instinct MI300 delivers 47.87 TFLOPS, which is 11.1 times the 4.301 TFLOPS of the Switch 2 GPU. In FP16, the MI300 delivers 47.87 TFLOPS versus 8.602 TFLOPS, a 5.6 times advantage. These are the largest numerical gaps in the comparison.

Memory bandwidth shows a similar disparity. The MI300's 5.32 TB/s is 52 times the Switch 2 GPU's 102.4 GB/s. The memory capacity difference is also substantial: 128 GB versus 12 GB, a 10.7 times difference. The bus width difference of 8192 bits versus 128 bits drives the bandwidth gap.

The Switch 2 GPU leads in pixel rate with 22.40 GPixel/s, while the MI300 records 0 MPixel/s, since it has no ROPs. The texture rate favors the MI300 at 1,496.0 GTexel/s versus 67.20 GTexel/s, a 22.3 times difference. The Switch 2 GPU has 16 ROPs and 48 TMUs, while the MI300 has 0 ROPs and 880 TMUs.

The MI300 has 14,080 shading units versus 1,536 for the Switch 2 GPU. The Switch 2 GPU includes 12 RT cores and 48 tensor cores, features the MI300 does not list. The MI300's base clock of 1000 MHz is higher than the Switch 2 GPU's 561 MHz, and the boost clocks are 1700 MHz versus 1400 MHz. The Switch 2 GPU has a shorter production status of Active, while the MI300's status is not recorded.

Specification Differences

The two GPUs differ in nearly every recorded specification. The MI300 uses a 5 nm process at TSMC; the Switch 2 GPU uses an 8 nm process at Samsung. Transistor count is 153,000 million for the MI300, while the Switch 2 GPU's transistor count is unknown. Die size is 1017 mm² for the MI300 versus 200 mm² for the Switch 2 GPU, and transistor density is 150.4M per mm² for the MI300, with no density recorded for the Switch 2 GPU.

Memory differs completely: the MI300 has 128 GB HBM3, 8192-bit bus, and 5.32 TB/s bandwidth; the Switch 2 GPU has 12 GB LPDDR5X, 128-bit bus, and 102.4 GB/s. The MI300 has 14,080 shading units, 880 TMUs, and 0 ROPs; the Switch 2 GPU has 1,536 shading units, 48 TMUs, and 16 ROPs. The MI300 lists no RT or tensor cores; the Switch 2 GPU has 12 RT cores and 48 tensor cores.

The MI300 has a 600 W TDP with 2x 8-pin power connectors and a 1000 W suggested PSU. The Switch 2 GPU has a 40 W TDP with no power connector or PSU listing. The MI300 uses PCIe 5.0 x16; the Switch 2 GPU has no bus interface listed. The MI300 has no display outputs, and the Switch 2 GPU also lists no display outputs.

The MI300 supports no graphics APIs, while the Switch 2 GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The MI300 measures 267 mm by 111 mm; the Switch 2 GPU measures 272 mm by 116 mm by 14 mm. The MI300's release date is January 3, 2023; the Switch 2 GPU's release date is June 4, 2025. The MI300 has a predecessor named Radeon Instinct, while the Switch 2 GPU has no predecessor recorded.

Architecture Differences

The architectural split is decisive. The MI300 is built on CDNA 3.0, AMD's compute-focused architecture, fabricated on a 5 nm TSMC process. It uses the chip design named Aqua Vanjaram and belongs to the Instinct (MIx) generation. The Switch 2 GPU uses NVIDIA's Ampere architecture, fabricated on an 8 nm Samsung process, with the chip design GA10B, belonging to the Console GPU (Nintendo) generation.

The process node difference, 5 nm versus 8 nm, explains part of the transistor density gap: 150.4M per mm² for the MI300 versus no recorded density for the Switch 2 GPU. The MI300's die is 1017 mm², more than five times the 200 mm² die of the Switch 2 GPU. The MI300 has no RT cores or tensor cores listed, while the Switch 2 GPU includes 12 RT cores and 48 tensor cores, indicating hardware support for ray tracing and tensor operations.

The MI300's FP16 performance is 47.87 TFLOPS at a 1:1 ratio with FP32, meaning it processes FP16 at the same rate as FP32. The Switch 2 GPU's FP16 is 8.602 TFLOPS at a 2:1 ratio, meaning it processes FP16 at twice the FP32 rate. This reflects different design priorities: the MI300 targets FP32 and FP16 compute at equal throughput, while the Switch 2 GPU doubles FP16 throughput for graphics workloads.

The MI300 has no ROPs and a pixel rate of 0 MPixel/s, confirming it is not designed for rasterization output. The Switch 2 GPU has 16 ROPs and a pixel rate of 22.40 GPixel/s. The texture rates are 1,496.0 GTexel/s for the MI300 and 67.20 GTexel/s for the Switch 2 GPU. The MI300's memory clock is 1300 MHz with 5.2 Gbps effective, while the Switch 2 GPU's memory clock is 800 MHz with 6.4 Gbps effective, the latter achieving higher effective data rate per pin.

The MI300 uses HBM3 memory, which provides the 5.32 TB/s bandwidth via an 8192-bit bus. The Switch 2 GPU uses LPDDR5X, which provides 102.4 GB/s via a 128-bit bus. The MI300 has no display outputs and no graphics API support, while the Switch 2 GPU supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. The MI300's power connectors are 2x 8-pin, while the Switch 2 GPU lists none, consistent with its 40 W TDP.

Where Each One Wins

The Instinct MI300 wins in compute throughput. Its 47.87 TFLOPS FP32 and 47.87 TFLOPS FP16 are far ahead of the Switch 2 GPU's 4.301 TFLOPS and 8.602 TFLOPS. The MI300 also wins in memory capacity and bandwidth, with 128 GB and 5.32 TB/s versus 12 GB and 102.4 GB/s. The MI300 has 14,080 shading units versus 1,536, and 880 TMUs versus 48. Its texture rate of 1,496.0 GTexel/s is 22.3 times the Switch 2 GPU's 67.20 GTexel/s.

The Switch 2 GPU wins in pixel throughput, with 22.40 GPixel/s versus 0 MPixel/s for the MI300. The Switch 2 GPU has 16 ROPs, while the MI300 has none. The Switch 2 GPU also wins in graphics feature support, with RT cores and tensor cores that the MI300 does not list. The Switch 2 GPU supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the MI300 lists N/A for all three. The Switch 2 GPU has a 40 W TDP versus 600 W for the MI300, making it far more power-efficient.

The Switch 2 GPU has a production status of Active, while the MI300's status is not recorded. The Switch 2 GPU's boost clock of 1400 MHz is lower than the MI300's 1700 MHz, but its base clock of 561 MHz is also lower than the MI300's 1000 MHz. The Switch 2 GPU's dimensions are 272 mm by 116 mm by 14 mm, while the MI300 is 267 mm by 111 mm with no width recorded.

For compute-heavy data center tasks such as large-scale FP32 or FP16 processing, the MI300 is the only viable choice in this comparison, given its massive memory, bandwidth, and shading unit count. For graphics rendering in a low-power console or embedded environment, the Switch 2 GPU is the appropriate selection, with its ROPs, RT cores, tensor cores, and full graphics API support. The benchmark data shows no overlap in intended use cases. The MI300 is a server accelerator; the Switch 2 GPU is a console graphics processor.