AMD Ryzen AI Z2 Extreme GPU vs NVIDIA H20 Comparison

AMD Ryzen AI Z2 Extreme GPU and NVIDIA H20 occupy opposite ends of the hardware spectrum. The AMD part is a 28 W console-class integrated GPU built on TSMC 4 nm, while the NVIDIA H20 is a 500 W server accelerator on TSMC 5 nm with an 814 mm² die. The database records no overlapping benchmark scores, so the comparison relies on architectural and specification data.

Where Each One Wins

The AMD Ryzen AI Z2 Extreme GPU wins in any scenario where power is limited. Its 28 W TDP allows operation without external power connectors, and its display output is a single USB Type-C port. This makes it suitable for compact, portable systems that need graphics output and low heat generation. The GPU uses RDNA 3.5 architecture with 1024 shading units, 64 TMUs, and 48 ROPs, which is a balanced configuration for rendering workloads on a mobile or handheld platform.

The NVIDIA H20 wins in compute-heavy, data center environments. It uses the Hopper architecture with 9984 shading units, 312 TMUs, and 312 tensor cores. Its 96 GB of HBM3 memory with a 6144 bit bus width delivers 4.03 TB/s of bandwidth, which is far beyond what the AMD part can access. The H20 also supports PCIe 5.0 x16, making it a natural fit for server motherboards. Its SXM Module slot width and 900 W suggested PSU indicate a system designed for rack-mounted acceleration, not desktop use.

The AMD part also claims the edge in graphics API compatibility. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, whereas the NVIDIA H20 reports N/A for all three. For gaming or any client-side rendering workload, the AMD GPU is the only one of the two that can run those APIs. The NVIDIA part has no display outputs, so it cannot drive a monitor directly.

The NVIDIA H20 wins on raw compute throughput. Its FP32 rate of 39.54 TFLOPS is several times higher than the AMD part’s 5.530 TFLOPS. In FP16, the H20 reaches 79.07 TFLOPS with a 2:1 ratio, while the AMD GPU delivers 5.530 TFLOPS with a 1:1 ratio. Tensor core presence on the H20 also gives it a functional advantage for AI inference and training workloads, though the database does not list a tensor core count for the AMD part.

Architecture Differences

The AMD Ryzen AI Z2 Extreme GPU uses the Strix Point chip with RDNA 3.5 architecture. It is built on a 4 nm TSMC process with 34,000 million transistors on a 233 mm² die. The transistor density is 145.9M per mm². Its memory subsystem uses 16 GB of LPDDR5X on a 256 bit bus, yielding 256.0 GB/s of bandwidth. The clock speeds are 800 MHz base and 2700 MHz boost, with memory at 1000 MHz or 8 Gbps effective.

The NVIDIA H20 uses the GH100 chip with Hopper architecture. It is built on a 5 nm TSMC process with 80,000 million transistors on an 814 mm² die. The transistor density is 98.3M per mm². Memory is 96 GB of HBM3 on a 6144 bit bus, delivering 4.03 TB/s. The clock speeds are 1830 MHz base and 1980 MHz boost, with memory at 1313 MHz or 5.3 Gbps effective.

The AMD GPU has 16 RT cores and no tensor core count listed. The NVIDIA H20 has no RT core count listed but includes 312 tensor cores. The AMD part’s pixel rate is 129.6 GPixel/s, and its texture rate is 172.8 GTexel/s. The NVIDIA H20’s pixel rate is 47.52 GPixel/s, and its texture rate is 617.8 GTexel/s. The NVIDIA part has a lower pixel rate but a much higher texture rate, reflecting a design built for compute throughput rather than rasterization.

The AMD GPU is listed as a Console GPU generation with an active production status and a release date of 2025-10-15. The NVIDIA H20 is a Server Hopper generation part, active in production, released 2024-01-31. The H20’s predecessor is Server Ada, and its successor is Server Blackwell. The AMD part has no predecessor or successor listed.

Head-to-Head Benchmarks

The database reports no head-to-head benchmark entries, and neither part has individual benchmark scores or average scores recorded. Both parts sit at the 50th percentile versus all GPUs in the database. Without measured scores, the comparison must be drawn from specification-derived rates.

The NVIDIA H20’s FP32 throughput of 39.54 TFLOPS is about 7.15 times the AMD part’s 5.530 TFLOPS. That is a clear win for the H20 in any FP32 compute workload. In FP16, the gap widens further: 79.07 TFLOPS versus 5.530 TFLOPS, a ratio of roughly 14.3 to 1. The H20’s FP16 advantage is amplified by its 2:1 FP16 ratio, whereas the AMD GPU runs FP16 at 1:1 with FP32.

Memory bandwidth shows a similar pattern. The H20’s 4.03 TB/s is about 15.7 times the AMD part’s 256.0 GB/s. This gives the H20 a massive edge in memory-bound workloads such as large model inference or dense matrix operations. The AMD GPU’s 16 GB capacity is small compared to the H20’s 96 GB, so the H20 can hold far larger datasets in local memory.

The AMD GPU counters with a higher pixel rate: 129.6 GPixel/s versus 47.52 GPixel/s. That is a 2.7 times advantage for the AMD part in pixel fill. This aligns with its role as a graphics-oriented part with 48 ROPs, compared to the H20’s 24 ROPs. The AMD GPU also has a higher boost clock at 2700 MHz versus 1980 MHz, which helps in latency-sensitive rendering tasks.

The NVIDIA H20 wins on texture rate: 617.8 GTexel/s versus 172.8 GTexel/s. That is a 3.6 times advantage. The H20’s 312 TMUs drive this result, far exceeding the AMD part’s 64 TMUs. The AMD GPU still leads in pixel rate because its ROP count is double the H20’s, despite the H20’s much larger shading unit count.

FAQ

Q: Which GPU has more shading units?

A: The NVIDIA H20 has 9984 shading units. The AMD Ryzen AI Z2 Extreme GPU has 1024 shading units.

Q: What is the memory bandwidth difference?

A: The NVIDIA H20 provides 4.03 TB/s over a 6144 bit HBM3 bus. The AMD Ryzen AI Z2 Extreme GPU provides 256.0 GB/s over a 256 bit LPDDR5X bus. The H20 has roughly 15.7 times the bandwidth.

Q: Does the NVIDIA H20 support DirectX?

A: No. The database lists DirectX as N/A for the NVIDIA H20. The AMD Ryzen AI Z2 Extreme GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: Which part can output to a display?

A: The AMD Ryzen AI Z2 Extreme GPU has a single USB Type-C display output. The NVIDIA H20 has no display outputs.

Q: What are the TDP values?

A: The AMD Ryzen AI Z2 Extreme GPU has a 28 W TDP. The NVIDIA H20 has a 500 W TDP and a 900 W suggested PSU.

Q: Which GPU has tensor cores?

A: The NVIDIA H20 has 312 tensor cores. The AMD Ryzen AI Z2 Extreme GPU has no tensor core count listed in the database.

The Verdict

The data points to two different buyers. The AMD Ryzen AI Z2 Extreme GPU is the only option for systems that need display output, DirectX 12 Ultimate support, or low power consumption. Its 28 W TDP and single USB Type-C output fit a handheld or embedded form factor. Its 16 GB of LPDDR5X memory and 256.0 GB/s bandwidth are sufficient for integrated graphics workloads, and its higher pixel rate of 129.6 GPixel/s suggests better rasterization performance per watt.

The NVIDIA H20 is for server installations where compute density and memory capacity matter more than power draw or graphics output. Its 96 GB HBM3 memory, 4.03 TB/s bandwidth, and 39.54 TFLOPS FP32 performance put it in a different class for AI and high-performance computing tasks. The 312 tensor cores and 79.07 TFLOPS FP16 rate make it suited for mixed-precision workloads. The lack of display outputs and DirectX support is irrelevant in a headless accelerator role.

The AMD part is the one to pick for client graphics. The NVIDIA part is the one to pick for server compute. Neither part competes in the other’s primary domain. The AMD GPU has no tensor core count and a lower compute ceiling, while the H20 cannot render to a screen or run standard graphics APIs. The recorded data confirms a clean split: one is a low-power graphics processor, the other is a high-bandwidth compute accelerator.

Specification Differences

• Process node: AMD uses 4 nm TSMC; NVIDIA uses 5 nm TSMC.
• Transistors: AMD has 34,000 million on a 233 mm² die; NVIDIA has 80,000 million on an 814 mm² die.
• Transistor density: AMD is 145.9M per mm²; NVIDIA is 98.3M per mm².
• Base clock: AMD is 800 MHz; NVIDIA is 1830 MHz.
• Boost clock: AMD is 2700 MHz; NVIDIA is 1980 MHz.
• Memory clock: AMD is 1000 MHz (8 Gbps effective); NVIDIA is 1313 MHz (5.3 Gbps effective).
• Memory size: AMD has 16 GB LPDDR5X; NVIDIA has 96 GB HBM3.
• Memory bus width: AMD is 256 bit; NVIDIA is 6144 bit.
• Memory bandwidth: AMD is 256.0 GB/s; NVIDIA is 4.03 TB/s.
• Shading units: AMD has 1024; NVIDIA has 9984.
• TMUs: AMD has 64; NVIDIA has 312.
• ROPs: AMD has 48; NVIDIA has 24.
• RT cores: AMD has 16; NVIDIA has none listed.
• Tensor cores: AMD has none listed; NVIDIA has 312.
• Pixel rate: AMD is 129.6 GPixel/s; NVIDIA is 47.52 GPixel/s.
• Texture rate: AMD is 172.8 GTexel/s; NVIDIA is 617.8 GTexel/s.
• FP32: AMD is 5.530 TFLOPS; NVIDIA is 39.54 TFLOPS.
• FP16: AMD is 5.530 TFLOPS (1:1); NVIDIA is 79.07 TFLOPS (2:1).
• TDP: AMD is 28 W; NVIDIA is 500 W.
• Power connectors: AMD has none; NVIDIA has none listed.
• Suggested PSU: AMD has none listed; NVIDIA is 900 W.
• Bus interface: AMD has none listed; NVIDIA is PCIe 5.0 x16.
• Slot width: AMD has none listed; NVIDIA is SXM Module.
• Display outputs: AMD has 1x USB Type-C; NVIDIA has no outputs.
• APIs: AMD supports DirectX 12 Ultimate (12_2), OpenGL 4.6, Vulkan 1.4; NVIDIA lists N/A for all.
• Release date: AMD is 2025-10-15; NVIDIA is 2024-01-31.