AMD Radeon RX 7900M vs NVIDIA H20 Comparison

The Verdict

The AMD Radeon RX 7900M is a mobile consumer graphics solution built for portable devices, while the NVIDIA H20 is a server-grade accelerator designed for datacenter deployment. The recorded data shows that the RX 7900M holds an average benchmark score of 97,487 and sits in the 94th percentile of all GPUs, whereas the H20 has no recorded benchmark scores and sits in the 50th percentile. For gaming and client-side workloads, the RX 7900M is the only option with actual performance data. For server AI and compute tasks, the H20 offers massive memory capacity and tensor core hardware, but without benchmark results, its relative performance cannot be quantified from the database.

The RX 7900M is the pick for anyone needing a GPU that can fit inside a laptop or portable device, as it uses an IGP slot width and has no power connectors, drawing 180 W. The H20 is the pick for datacenter racks where the SXM Module form factor and 500 W TDP are acceptable, and where 96 GB of HBM3 memory is required. The data clearly separates these two products: one is a mobile graphics processor with proven benchmark scores, the other is a server accelerator with no recorded performance metrics.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 7900M has an average benchmark score of 97,487, while the NVIDIA H20 has an average benchmark score of 0 because no benchmark results are recorded for it in the database.

Q: What is the memory capacity difference between these two GPUs?

A: The NVIDIA H20 has 96 GB of HBM3 memory on a 6144-bit bus with 4.03 TB/s bandwidth. The AMD Radeon RX 7900M has 16 GB of GDDR6 memory on a 256-bit bus with 576.0 GB/s bandwidth.

Q: How do their transistor counts compare?

A: The NVIDIA H20 has 80,000 million transistors on an 814 mm² die, while the AMD Radeon RX 7900M has 57,700 million transistors on a 529 mm² die. Both use a 5 nm process from TSMC.

Q: Which GPU has more shading units?

A: The NVIDIA H20 has 9,984 shading units, more than double the 4,608 shading units of the AMD Radeon RX 7900M. The H20 also has 312 texture mapping units versus 288 on the RX 7900M.

Q: Do both GPUs support DirectX 12?

A: No. The AMD Radeon RX 7900M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA H20 has no graphics API support recorded, with DirectX, OpenGL, and Vulkan all listed as N/A.

Q: What are the power requirements for each?

A: The AMD Radeon RX 7900M has a 180 W TDP and requires no power connectors. The NVIDIA H20 has a 500 W TDP and carries a suggested PSU rating of 900 W.

Architecture Differences

The AMD Radeon RX 7900M uses the Navi 31 chip based on RDNA 3.0 architecture with the codename Plum Bonito, belonging to the Navi Mobile (RX 7000M) generation. The NVIDIA H20 uses the GH100 chip based on Hopper architecture and belongs to the Server Hopper (Hxx) generation. Both are fabricated by TSMC on a 5 nm process, but the H20 packs 80,000 million transistors on an 814 mm² die, while the RX 7900M contains 57,700 million transistors on a 529 mm² die. The transistor density is higher on the AMD part at 109.1M per mm² versus 98.3M per mm² on the NVIDIA part.

The RX 7900M includes 72 ray tracing cores, while the H20 lists no ray tracing cores at all. Conversely, the H20 includes 312 tensor cores, while the RX 7900M lists no tensor cores. This reflects their intended workloads: the AMD part targets graphics rendering with ray tracing support, while the NVIDIA part targets compute acceleration with tensor operations. The RX 7900M also supports a full graphics API stack with DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, whereas the H20 has no display outputs and no graphics API support recorded.

The RX 7900M uses a PCIe 4.0 x16 bus interface, while the H20 uses PCIe 5.0 x16. The AMD part is packaged as an IGP (integrated graphics processor) with no power connectors, while the NVIDIA part is an SXM Module with a 500 W TDP and a 900 W suggested PSU. The RX 7900M was released on October 18, 2023, and the H20 followed on January 31, 2024. The H20's predecessor is Server Ada and its successor is Server Blackwell, while the RX 7900M's predecessor is Polaris Mobile with no successor listed.

Specification Differences

The core clock speeds differ modestly: the RX 7900M has a base clock of 1825 MHz and a boost clock of 2090 MHz, while the H20 has a base clock of 1830 MHz and a boost clock of 1980 MHz. The memory clocks are substantially different: the RX 7900M runs at 2250 MHz with 18 Gbps effective, while the H20 runs at 1313 MHz with 5.3 Gbps effective. The H20 compensates with a much wider 6144-bit memory bus and HBM3 memory, delivering 4.03 TB/s bandwidth versus 576.0 GB/s on the RX 7900M.

The shading unit count is 4,608 on the RX 7900M versus 9,984 on the H20. Texture mapping units are 288 versus 312, and raster operations units are 192 versus 24. The RX 7900M has 72 ray tracing cores and no tensor cores; the H20 has 312 tensor cores and no ray tracing cores. Pixel rate is 401.3 GPixel/s on the AMD part versus 47.52 GPixel/s on the NVIDIA part. Texture rate is 601.9 GTexel/s versus 617.8 GTexel/s. FP32 performance is 38.52 TFLOPS on the RX 7900M and 39.54 TFLOPS on the H20. FP16 performance is 77.05 TFLOPS on the AMD part and 79.07 TFLOPS on the NVIDIA part.

The RX 7900M has 16 GB of GDDR6 memory, while the H20 has 96 GB of HBM3. The H20 has no display outputs, while the RX 7900M's outputs are portable device dependent. The H20 has no graphics APIs, while the RX 7900M supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4. TDP is 180 W for the AMD part and 500 W for the NVIDIA part.

Head-to-Head Benchmarks

The database records no head-to-head benchmark results between the AMD Radeon RX 7900M and the NVIDIA H20. The RX 7900M has three individual benchmark scores: 4,201 in 3DMark Steel Nomad DX12, 129,499 in Geekbench OpenCL, and 158,760 in Geekbench Vulkan. The H20 has no benchmark scores in any test category. This makes direct performance comparison impossible from the recorded data.

The RX 7900M's average benchmark score of 97,487 places it in the 94th percentile of all GPUs. Its nearest rivals in the database are the AMD Radeon Pro VII with an average score of 97,131 (0.4% ahead of the RX 7900M), the NVIDIA Quadro RTX 6000 with 101,872 (the RX 7900M trails by 4.3%), the AMD Radeon Instinct MI60 with 92,466 (the RX 7900M leads by 5.4%), and the NVIDIA RTX A4500 with 91,671 (the RX 7900M leads by 6.3%). These figures show the RX 7900M performs near the top of the GPU hierarchy, competitive with professional workstation cards.

The H20 has no nearest rivals listed, no average benchmark score, and a 50th percentile ranking, which reflects the absence of performance data rather than a measure of its capabilities. Without benchmark results, the H20 cannot be positioned relative to other GPUs in the database.

Where Each One Wins

The AMD Radeon RX 7900M wins in every category where performance data exists. It has recorded benchmark scores in 3DMark Steel Nomad DX12, Geekbench OpenCL, and Geekbench Vulkan, with an average score of 97,487 and a 94th percentile standing. It wins on pixel rate with 401.3 GPixel/s versus 47.52 GPixel/s, and it wins on ray tracing capability with 72 dedicated ray tracing cores. It also wins on power efficiency with a 180 W TDP and no external power connectors, making it suitable for portable devices.

The NVIDIA H20 wins on memory capacity with 96 GB versus 16 GB, memory bandwidth with 4.03 TB/s versus 576.0 GB/s, and memory bus width with 6144 bit versus 256 bit. It wins on shading units with 9,984 versus 4,608, and on tensor cores with 312 versus none. It has slightly higher FP32 compute at 39.54 TFLOPS versus 38.52 TFLOPS, and slightly higher FP16 compute at 79.07 TFLOPS versus 77.05 TFLOPS. The H20 also wins on texture rate with 617.8 GTexel/s versus 601.9 GTexel/s, and on bus interface with PCIe 5.0 x16 versus PCIe 4.0 x16.

The RX 7900M wins for gaming and graphics workloads, given its DirectX 12 Ultimate and Vulkan support, ray tracing hardware, and portable form factor. The H20 wins for server-side compute and AI inference workloads, given its tensor cores, massive HBM3 memory pool, and datacenter-oriented SXM Module packaging. The data shows two specialized products: the RX 7900M is a high-performance mobile graphics processor, and the H20 is a high-capacity server accelerator. Each dominates in its own domain, and the absence of H20 benchmark scores means the only measurable performance wins belong to the RX 7900M.