AMD Radeon RX 6450M vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The database contains no recorded head-to-head benchmark entries for the AMD Radeon RX 6450M and the NVIDIA H20. Both parts show identical percentile scores of 50 against all GPUs, and both have an average benchmark score of zero in the current dataset. This absence of direct comparison data is itself informative. The RX 6450M is a mobile graphics solution aimed at thin-and-light laptops, while the H20 is a server accelerator with a 500 W TDP and an SXM Module slot width. The performance profiles are so divergent that no common benchmark workload has produced a paired result.

Without direct scores, the FP32 and FP16 figures become the only quantitative performance indicators available. The RX 6450M delivers 3.779 TFLOPS of FP32 compute and 7.557 TFLOPS of FP16 with a 2:1 ratio. The H20 delivers 39.54 TFLOPS of FP32 and 79.07 TFLOPS of FP16, also at 2:1. That puts the H20 at roughly 10.46 times the FP32 throughput and 10.46 times the FP16 throughput of the RX 6450M. The ratio is consistent because both architectures employ the same 2:1 FP16 to FP32 rate. Texture rate tells a similar story: the H20 reaches 617.8 GTexel/s against 118.1 GTexel/s for the RX 6450M, a 5.23 times advantage. Pixel rate, however, is a different matter. The RX 6450M posts 78.72 GPixel/s, while the H20 manages only 47.52 GPixel/s. The mobile GPU leads by a factor of 1.66 in pixel throughput, a direct consequence of the H20 having just 24 ROPs compared to 32 on the RX 6450M.

The zero-win, zero-loss split in the head-to-head table reflects the absence of shared tests, not equivalence. The RX 6450M has no nearest rivals listed, and the H20 has none either. The database has not placed these two products in the same competitive cluster, likely due to differences in form factor, power envelope, and intended use case.

Architecture Differences

The two GPUs come from fundamentally different design lineages. The RX 6450M uses the Navi 24 chip built on RDNA 2.0 architecture, part of the Navi Mobile (RX 6000M) generation. The H20 uses the GH100 chip on Hopper architecture, part of the Server Hopper (Hxx) generation. Process nodes differ: TSMC fabricates the RX 6450M on a 6 nm node, while the H20 uses a 5 nm node from the same foundry. Transistor counts are not close. The RX 6450M packs 5,400 million transistors on a 107 mm² die, giving a density of 50.5 million transistors per square millimeter. The H20 integrates 80,000 million transistors on an 814 mm² die, a density of 98.3 million per square millimeter. The H20 has 14.8 times the transistor count and roughly 7.6 times the die area.

Compute resources differ sharply. The RX 6450M has 768 shading units, 48 texture mapping units, 32 ROPs, and 12 ray tracing cores. It has no tensor cores listed. The H20 has 9,984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores. The H20 lists no ray tracing cores, and its API support is marked N/A for DirectX, OpenGL, and Vulkan, reflecting its non-rendering server role. The RX 6450M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Clock behavior differs as well. The RX 6450M runs a 2000 MHz base clock, a 2460 MHz boost clock, and a 2220 MHz game clock. The H20 runs a 1830 MHz base and 1980 MHz boost, with no game clock listed. Despite lower clocks, the H20 achieves far higher raw throughput because of its massive shading unit count. The RX 6450M consumes 50 W and uses no external power connectors, while the H20 draws 500 W and requires a 900 W suggested PSU. The RX 6450M is an IGP form factor; the H20 is an SXM module.

Memory architecture is another stark divide. The RX 6450M uses 4 GB of GDDR6 on a 64 bit bus, yielding 128.0 GB/s of bandwidth. Memory clock is 2000 MHz, or 16 Gbps effective. The H20 uses 96 GB of HBM3 on a 6144 bit bus, yielding 4.03 TB/s of bandwidth. Its memory clock is 1313 MHz, or 5.3 Gbps effective. The H20 has 24 times the memory capacity and roughly 31.5 times the bandwidth. Bus interface also differs: PCIe 4.0 x4 for the RX 6450M versus PCIe 5.0 x16 for the H20. Display outputs are portable-device dependent on the RX 6450M, while the H20 has no outputs at all.

Where Each One Wins

The RX 6450M wins in pixel throughput. Its 78.72 GPixel/s versus 47.52 GPixel/s for the H20 suggests the mobile part is better suited to rasterization tasks that stress ROP output. The H20 has fewer ROPs (24 versus 32) despite its enormous compute array. For any workload that ends in frame output, the RX 6450M holds the advantage. Its higher boost clock of 2460 MHz also gives it a clock-speed edge over the H20's 1980 MHz boost, which can matter for latency-sensitive rendering stages.

The H20 wins in nearly every raw compute metric. Its FP32 output of 39.54 TFLOPS dwarfs the 3.779 TFLOPS of the RX 6450M. FP16 follows the same pattern: 79.07 TFLOPS versus 7.557 TFLOPS. Texture rate favors the H20 at 617.8 GTexel/s against 118.1 GTexel/s. The H20 has 312 tensor cores while the RX 6450M has none, giving it a clear monopoly on tensor operations. Memory capacity and bandwidth also favor the H20 decisively: 96 GB of HBM3 with 4.03 TB/s bandwidth versus 4 GB of GDDR6 with 128.0 GB/s.

The use-case split is therefore clean. The RX 6450M is a rendering-oriented part for portable devices, with a 50 W power envelope, DirectX 12 Ultimate support, and ray tracing cores. The H20 is a compute-oriented server accelerator with no graphics API support, no display outputs, and a 500 W power draw. The H20's 312 tensor cores indicate a design focus on matrix operations. The RX 6450M's 12 ray tracing cores indicate a design focus on real-time graphics effects. Neither part is a substitute for the other.

Specification Differences

The two GPUs differ in nearly every recorded specification field. Process node: 6 nm versus 5 nm. Transistors: 5,400 million versus 80,000 million. Die size: 107 mm² versus 814 mm². Transistor density: 50.5 million per mm² versus 98.3 million per mm². Base clock: 2000 MHz versus 1830 MHz. Boost clock: 2460 MHz versus 1980 MHz. The RX 6450M has a game clock of 2220 MHz; the H20 has none. Memory clock: 2000 MHz (16 Gbps effective) versus 1313 MHz (5.3 Gbps effective). Memory size: 4 GB GDDR6 versus 96 GB HBM3. Bus width: 64 bit versus 6144 bit. Bandwidth: 128.0 GB/s versus 4.03 TB/s.

Shading units: 768 versus 9,984. TMUs: 48 versus 312. ROPs: 32 versus 24. Ray tracing cores: 12 versus none. Tensor cores: none versus 312. Pixel rate: 78.72 GPixel/s versus 47.52 GPixel/s. Texture rate: 118.1 GTexel/s versus 617.8 GTexel/s. FP32: 3.779 TFLOPS versus 39.54 TFLOPS. FP16: 7.557 TFLOPS versus 79.07 TFLOPS. TDP: 50 W versus 500 W. Slot width: IGP versus SXM Module. Power connectors: none versus not listed. Suggested PSU: not listed versus 900 W. Bus interface: PCIe 4.0 x4 versus PCIe 5.0 x16. Display outputs: portable-device dependent versus no outputs.

API support differs entirely. The RX 6450M lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for all three. Release dates differ: January 3, 2023 for the RX 6450M versus January 31, 2024 for the H20. The RX 6450M's predecessor is Polaris Mobile with no successor listed. The H20's predecessor is Server Ada and its successor is Server Blackwell. Neither part has a launch MSRP in the database. Both parts are marked Active in production status. Architecture names differ: RDNA 2.0 versus Hopper. Chip names differ: Navi 24 versus GH100. Neither part has a codename listed.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA H20 delivers 39.54 TFLOPS of FP32, compared to 3.779 TFLOPS for the AMD Radeon RX 6450M, a 10.46 times advantage.

Q: Does the AMD Radeon RX 6450M support ray tracing?

A: Yes, the RX 6450M includes 12 ray tracing cores. The NVIDIA H20 lists no ray tracing cores in the database.

Q: How much memory does each GPU have?

A: The AMD Radeon RX 6450M has 4 GB of GDDR6 on a 64 bit bus. The NVIDIA H20 has 96 GB of HBM3 on a 6144 bit bus.

Q: Which GPU has higher memory bandwidth?

A: The NVIDIA H20 has 4.03 TB/s of bandwidth, while the AMD Radeon RX 6450M has 128.0 GB/s. The H20 provides roughly 31.5 times the bandwidth.

Q: Do both GPUs support the same graphics APIs?

A: No. The AMD Radeon RX 6450M supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA H20 lists N/A for DirectX, OpenGL, and Vulkan.

Q: What are the power requirements for each GPU?

A: The AMD Radeon RX 6450M has a 50 W TDP and uses no external power connectors. The NVIDIA H20 has a 500 W TDP and a suggested PSU of 900 W.

The Verdict

The data describes two products with almost no overlap. The AMD Radeon RX 6450M is a 50 W mobile GPU with an IGP form factor, 4 GB of GDDR6, ray tracing support, and full DirectX 12 Ultimate API coverage. Its 78.72 GPixel/s pixel rate is higher than the H20's 47.52 GPixel/s, and its 2460 MHz boost clock is the fastest clock in either spec sheet. It is the appropriate choice for portable rendering workloads where power draw stays at 50 W and where graphics API compatibility matters.

The NVIDIA H20 is a 500 W server accelerator with no display outputs and no graphics API support. Its 96 GB of HBM3 memory, 4.03 TB/s bandwidth, 312 tensor cores, and 39.54 TFLOPS of FP32 position it entirely for compute-heavy server tasks. The 900 W suggested PSU and SXM Module slot confirm a data-center orientation. Its 10.46 times FP32 advantage and 31.5 times memory bandwidth advantage over the RX 6450M make the performance gap enormous, but the gap runs in the opposite direction for pixel rate and graphics API support.

Users of the RX 6450M get a low-power, graphics-capable processor for portable devices. Users of the H20 get a high-throughput compute engine with tensor cores and massive memory capacity. The database shows no shared benchmarks, no shared nearest rivals, and no common API surface. The selection between them depends entirely on whether the workload requires rasterization and display output or large-scale matrix compute and memory bandwidth. The RX 6450M wins the rendering side; the H20 wins the compute side by a wide margin.