AMD Ryzen Z2 A GPU vs NVIDIA H100 CNX Comparison

Where Each One Wins

The AMD Ryzen Z2 A GPU and the NVIDIA H100 CNX occupy completely different segments of the hardware landscape. The recorded data shows no overlapping benchmark results, no shared test workloads, and no head-to-head comparisons in the database. The Ryzen Z2 A GPU is a 15 W console-class part built on the Van Gogh chip with RDNA 2.0 architecture, while the H100 CNX is a 350 W server accelerator built on the GH100 chip with Hopper architecture. Their respective strengths are defined entirely by their architectural specifications and the workloads those specifications serve.

The Ryzen Z2 A GPU delivers 1.638 TFLOPS of FP32 compute and 3.277 TFLOPS of FP16 compute via a 2:1 ratio. It uses 16 GB of LPDDR5 memory on a 128 bit bus, producing 102.4 GB/s of bandwidth. Its 512 shading units, 32 texture mapping units, and 16 render output units are paired with 8 ray tracing cores. The pixel rate is 25.60 GPixel/s and the texture rate is 51.20 GTexel/s. The chip is manufactured on a 7 nm process at TSMC with 2,400 million transistors on a 163 mm² die. Transistor density is 14.7 million per mm². It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Display output is a single USB Type-C connector. Its base clock is 1000 MHz with a boost clock of 1600 MHz, and memory runs at 800 MHz with 6.4 Gbps effective speed. The production status is Active, with a release date of 2024-12-31.

The H100 CNX delivers 53.84 TFLOPS of FP32 compute and 215.4 TFLOPS of FP16 compute via a 4:1 ratio. It uses 80 GB of HBM2e memory on a 5120 bit bus, producing 2.04 TB/s of bandwidth. Its 14,592 shading units, 456 texture mapping units, and 24 render output units are joined by 456 tensor cores. The pixel rate is 44.28 GPixel/s and the texture rate is 841.3 GTexel/s. The chip is manufactured on a 5 nm process at TSMC with 80,000 million transistors on an 814 mm² die. Transistor density is 98.3 million per mm². The base clock is 690 MHz with a boost clock of 1845 MHz, and memory runs at 1593 MHz with 3.2 Gbps effective speed. The card is dual-slot, uses an 8-pin EPS power connector, requires a 750 W suggested PSU, and connects via PCIe 5.0 x16. It has no display outputs. Its predecessor is Server Ada, its successor is Server Blackwell, and its production status is Active, with a release date of 2023-03-20.

Because the database records zero benchmark wins for either side, the use-case split must be inferred from the specification deltas. The Ryzen Z2 A GPU is the only one of the two with any display output, making it suitable for scenarios requiring video output. The H100 CNX has no display outputs, which indicates its role is compute-only. The Ryzen Z2 A GPU is also the only one with graphics API support in the database, listing DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, while the H100 CNX lists null for all three APIs. That places the AMD part in rendering and graphics workloads, while the NVIDIA part sits in accelerated compute and tensor workloads.

The Verdict

The data directs each product to a different buyer. The Ryzen Z2 A GPU should be chosen by anyone needing a low-power, 15 W graphics solution with modern API coverage and a display output. Its 16 GB of LPDDR5 memory and 102.4 GB/s bandwidth are substantial for its power class, and its 8 ray tracing cores provide hardware ray tracing capability. The H100 CNX should be chosen by anyone needing massive FP16 throughput, tensor core acceleration, or very high memory bandwidth. Its 2.04 TB/s bandwidth and 456 tensor cores place it in a different performance tier entirely.

Neither product outperforms the other in the database because no common benchmark exists between them. Percentile rankings are identical at 50 for both, and average benchmark scores are zero for both. The verdict is therefore architectural, not empirical. The AMD part wins on power efficiency, portability, and graphics feature support. The NVIDIA part wins on raw compute, memory capacity, and memory bandwidth. A 15 W part with 1.638 TFLOPS FP32 cannot compete with a 350 W part with 53.84 TFLOPS FP32 in absolute throughput, but the H100 CNX cannot output video or run graphics APIs, which the data confirms. The choice depends entirely on the workload, and the data supports that split cleanly.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries between the AMD Ryzen Z2 A GPU and the NVIDIA H100 CNX. Wins A is zero, wins B is zero, and the head-to-head benchmark array is empty. This absence is itself informative. The two devices are so far apart in target application that no shared test suite has been recorded.

The largest numerical gaps exist in raw specification fields. FP32 throughput differs by a factor of more than 32, with the H100 CNX at 53.84 TFLOPS versus 1.638 TFLOPS for the Ryzen Z2 A GPU. FP16 throughput differs by a factor of more than 65, with the H100 CNX at 215.4 TFLOPS versus 3.277 TFLOPS for the AMD part. Memory bandwidth differs by a factor of roughly 20, with 2.04 TB/s versus 102.4 GB/s. Memory capacity differs by a factor of 5, with 80 GB versus 16 GB. Shading units number 14,592 versus 512, a factor of 28.5. Texture mapping units number 456 versus 32, a factor of 14.25. Render output units number 24 versus 16, a 1.5 times difference. Texture rate is 841.3 GTexel/s versus 51.20 GTexel/s, a factor of roughly 16.4. Pixel rate is 44.28 GPixel/s versus 25.60 GPixel/s, a factor of only 1.73.

Transistor count differs by a factor of 33.3, with 80,000 million versus 2,400 million. Die size differs by a factor of 5, with 814 mm² versus 163 mm². Transistor density differs by a factor of 6.7, with 98.3 million per mm² versus 14.7 million per mm². Power draw differs by a factor of 23.3, with 350 W versus 15 W. The process node differs by 2 nm, with 5 nm versus 7 nm.

The Ryzen Z2 A GPU holds advantages in clock behavior and physical footprint. Its base clock of 1000 MHz exceeds the H100 CNX base clock of 690 MHz by 310 MHz. Its boost clock of 1600 MHz is lower than the H100 CNX boost clock of 1845 MHz, however. The AMD part has no listed dimensions, while the H100 CNX measures 267 mm in length and 111 mm in height. The AMD part also has a lower transistor density, which reflects its older process node. The AMD part's memory clock of 800 MHz with 6.4 Gbps effective speed compares to the H100 CNX memory clock of 1593 MHz with 3.2 Gbps effective speed, though the effective rates are not directly comparable given the different memory types and bus widths.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA H100 CNX. Its FP32 throughput is 53.84 TFLOPS, while the AMD Ryzen Z2 A GPU delivers 1.638 TFLOPS.

Q: Which GPU has more memory bandwidth?

A: The NVIDIA H100 CNX. It provides 2.04 TB/s of bandwidth from 80 GB of HBM2e on a 5120 bit bus. The AMD Ryzen Z2 A GPU provides 102.4 GB/s from 16 GB of LPDDR5 on a 128 bit bus.

Q: Do both GPUs support display output?

A: No. The AMD Ryzen Z2 A GPU has one USB Type-C display output. The NVIDIA H100 CNX lists no outputs.

Q: Which GPU supports graphics APIs?

A: Only the AMD Ryzen Z2 A GPU. It supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA H100 CNX lists null for DirectX, OpenGL, and Vulkan.

Q: Which GPU has tensor cores?

A: The NVIDIA H100 CNX has 456 tensor cores. The AMD Ryzen Z2 A GPU lists no tensor cores.

Q: What are the power requirements of each GPU?

A: The AMD Ryzen Z2 A GPU has a TDP of 15 W. The NVIDIA H100 CNX has a TDP of 350 W and a suggested PSU of 750 W.

Architecture Differences

The two chips share a foundry but diverge everywhere else. Both are manufactured by TSMC, but the AMD Ryzen Z2 A GPU uses a 7 nm process while the NVIDIA H100 CNX uses a 5 nm process. Transistor counts reflect the gap: 2,400 million transistors on a 163 mm² die for the AMD part, versus 80,000 million transistors on an 814 mm² die for the NVIDIA part. Transistor density is 14.7 million per mm² for the AMD part and 98.3 million per mm² for the NVIDIA part.

The architectures themselves are different generations and design philosophies. The AMD chip, Van Gogh, uses RDNA 2.0 and belongs to the Console GPU generation. The NVIDIA chip, GH100, uses Hopper and belongs to the Server Hopper generation. The AMD part has 512 shading units, 32 TMUs, 16 ROPs, and 8 ray tracing cores. The NVIDIA part has 14,592 shading units, 456 TMUs, 24 ROPs, and 456 tensor cores, with no ray tracing cores listed.

Memory architecture differs fundamentally. The AMD part uses 16 GB of LPDDR5 on a 128 bit bus with 102.4 GB/s bandwidth. The NVIDIA part uses 80 GB of HBM2e on a 5120 bit bus with 2.04 TB/s bandwidth. The bus width difference is a factor of 40, and the bandwidth difference is a factor of roughly 20. Memory clocks also differ, with the AMD part at 800 MHz and 6.4 Gbps effective, and the NVIDIA part at 1593 MHz and 3.2 Gbps effective.

Compute capabilities differ in ratio as well as magnitude. The AMD part lists FP32 at 1.638 TFLOPS and FP16 at 3.277 TFLOPS, a 2:1 ratio. The NVIDIA part lists FP32 at 53.84 TFLOPS and FP16 at 215.4 TFLOPS, a 4:1 ratio. The NVIDIA FP16 figure benefits from its tensor core array, while the AMD FP16 figure is a straightforward 2:1 rate. Pixel rates are 25.60 GPixel/s for the AMD part and 44.28 GPixel/s for the NVIDIA part. Texture rates are 51.20 GTexel/s and 841.3 GTexel/s respectively.

Interface and physical design differ sharply. The AMD part has no listed bus interface, no slot width, and no power connectors. The NVIDIA part uses PCIe 5.0 x16, is dual-slot, uses an 8-pin EPS power connector, and suggests a 750 W PSU. The NVIDIA card measures 267 mm in length and 111 mm in height. The AMD part has no listed dimensions. The AMD part has one USB Type-C display output, while the NVIDIA part has no display outputs. API support exists only on the AMD side, with DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 all listed. The NVIDIA part lists null for all three.

Release timing and product lineage also differ. The AMD Ryzen Z2 A GPU was released on 2024-12-31, while the NVIDIA H100 CNX was released on 2023-03-20. The NVIDIA part has a predecessor, Server Ada, and a successor, Server Blackwell. The AMD part lists neither. Both are marked Active in production status. The TDP difference of 335 W between the two parts, 15 W versus 350 W, underscores the design intent: one is a low-power graphics solution, the other is a high-throughput server accelerator.