AMD Radeon RX 6550S vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded database does not contain direct head-to-head benchmark scores for the AMD Radeon RX 6550S and the NVIDIA H20. Both entries show an average benchmark score of zero, and the head-to-head benchmark list is empty. The percentile versus all GPUs is identical for both at 50, indicating that neither part has a measured advantage over the other in standardized testing. This absence of data means a direct performance comparison cannot be quantified from the measurements. The wins tally also reflects this: zero wins for the AMD Radeon RX 6550S and zero wins for the NVIDIA H20. Without recorded performance metrics, the analysis must rely on the architectural and specification differences documented in the database rather than on benchmark outcomes.

FAQ

Q: Which GPU has more shading units?

A: The NVIDIA H20 has 9,984 shading units, while the AMD Radeon RX 6550S has 1,024. The H20’s shading unit count is roughly 9.75 times larger, which indicates a substantially wider execution width for parallel compute workloads.

Q: What is the memory capacity difference?

A: The NVIDIA H20 comes with 96 GB of HBM3 memory on a 6,144-bit bus, delivering 4.03 TB/s of bandwidth. The AMD Radeon RX 6550S uses 4 GB of GDDR6 on a 64-bit bus, providing 128.0 GB/s. The H20 offers 24 times the capacity and over 31 times the bandwidth.

Q: How do their FP32 compute rates compare?

A: The NVIDIA H20 achieves 39.54 TFLOPS of FP32 performance. The AMD Radeon RX 6550S delivers 4.915 TFLOPS. The H20 is 8.04 times faster in single-precision floating-point throughput.

Q: Are both GPUs on the same process node?

A: No. The AMD Radeon RX 6550S uses a 6 nm process from TSMC. The NVIDIA H20 uses a 5 nm process, also from TSMC. The H20’s node is smaller, but the difference in transistor count is far more significant: the H20 has 80,000 million transistors versus 5,400 million for the RX 6550S.

Q: Do both support standard graphics APIs?

A: The AMD Radeon RX 6550S supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The NVIDIA H20 reports N/A for DirectX, OpenGL, and Vulkan, indicating it is not intended for conventional graphics rendering.

Q: What are their power requirements?

A: The AMD Radeon RX 6550S has a TDP of 50 W and uses no power connectors. The NVIDIA H20 has a TDP of 500 W and lists a suggested PSU of 900 W. The H20 draws 10 times the power budget of the RX 6550S.

Architecture Differences

The AMD Radeon RX 6550S is built on the RDNA 2.0 architecture using the Navi 24 chip, part of the Navi Mobile (RX 6000M) generation. It is manufactured on a 6 nm process at TSMC, with 5,400 million transistors on a 107 mm² die, yielding a transistor density of 50.5M per mm². The design targets low-power mobile integration, indicated by its IGP slot width and portable-device-dependent display outputs. The architecture includes 16 ray tracing cores, reflecting RDNA 2.0’s hardware ray tracing support, and provides DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4 APIs.

The NVIDIA H20 is built on the Hopper architecture using the GH100 chip, part of the Server Hopper (Hxx) generation. It is manufactured on a 5 nm process at TSMC, with 80,000 million transistors on an 814 mm² die, giving a transistor density of 98.3M per mm². This is a server-class accelerator with an SXM Module slot width and no display outputs. The H20 includes 312 tensor cores, which are absent from the RX 6550S specification. The H20 does not support conventional graphics APIs, reporting N/A for DirectX, OpenGL, and Vulkan, aligning with its compute-focused role. The H20 also uses a PCIe 5.0 x16 bus interface, while the RX 6550S uses PCIe 4.0 x4.

The process node difference is small: 6 nm versus 5 nm. The transistor density gap is larger, with the H20 at 98.3M per mm² versus 50.5M per mm² for the RX 6550S. The H20’s die is 7.6 times larger in area, and its transistor count is 14.8 times higher. The architecture split is fundamental: RDNA 2.0 is a graphics-oriented design with ray tracing hardware, while Hopper is a data-center compute architecture with tensor cores and no graphics pipeline.

Specification Differences

The two GPUs differ across nearly every recorded specification field.

Clock speeds: The AMD Radeon RX 6550S has a base clock of 2000 MHz, a boost clock of 2400 MHz, and a game clock of 2170 MHz. The NVIDIA H20 has a base clock of 1830 MHz and a boost clock of 1980 MHz, with no game clock recorded. The RX 6550S runs at higher clock frequencies, but the H20’s much larger execution resources compensate.

Memory: The RX 6550S uses 4 GB of GDDR6 with a 64-bit bus and 128.0 GB/s bandwidth. The H20 uses 96 GB of HBM3 with a 6,144-bit bus and 4.03 TB/s bandwidth. Memory clock differs as well: the RX 6550S lists 2000 MHz with 16 Gbps effective, while the H20 lists 1313 MHz with 5.3 Gbps effective. The HBM3 interface width is 96 times wider than the GDDR6 bus.

Compute units: The RX 6550S has 1,024 shading units, 64 TMUs, and 32 ROPs. The H20 has 9,984 shading units, 312 TMUs, and 24 ROPs. The H20 has 8.75 times more TMUs but fewer ROPs. The pixel rate reflects this: the RX 6550S delivers 76.80 GPixel/s, while the H20 delivers 47.52 GPixel/s. The texture rate reverses the trend: the RX 6550S achieves 153.6 GTexel/s, while the H20 achieves 617.8 GTexel/s.

Ray tracing and tensor cores: The RX 6550S has 16 ray tracing cores and no tensor cores. The H20 has no recorded ray tracing cores but has 312 tensor cores. This reflects the AMD part’s gaming focus and the NVIDIA part’s AI and compute orientation.

FP32 and FP16: The RX 6550S delivers 4.915 TFLOPS FP32 and 9.830 TFLOPS FP16 (2:1). The H20 delivers 39.54 TFLOPS FP32 and 79.07 TFLOPS FP16 (2:1). The H20 is 8.04 times higher in FP32 and 8.04 times higher in FP16.

Power and form factor: The RX 6550S has a TDP of 50 W, an IGP slot width, and no power connectors. The H20 has a TDP of 500 W, an SXM Module slot width, and a suggested PSU of 900 W. The RX 6550S’s display outputs are portable-device dependent, while the H20 has no outputs at all.

Bus interface: The RX 6550S uses PCIe 4.0 x4, while the H20 uses PCIe 5.0 x16. The H20’s interface provides more lanes and a newer generation.

Release dates: The RX 6550S was released on 2023-01-03, while the H20 was released on 2024-01-31. The RX 6550S’s predecessor is Polaris Mobile; the H20’s predecessor is Server Ada and its successor is Server Blackwell.

The Verdict

The database shows two GPUs with opposite design goals. The AMD Radeon RX 6550S is a 50 W mobile part with 4 GB of memory, a 64-bit bus, and 4.915 TFLOPS of FP32 compute. It includes ray tracing cores and full graphics API support, making it suitable for portable devices with limited power budgets. The NVIDIA H20 is a 500 W server accelerator with 96 GB of HBM3, a 6,144-bit bus, and 39.54 TFLOPS of FP32 compute. It has 312 tensor cores and no graphics API support, positioning it as a compute-focused data-center product.

Benchmark results do not exist in the database, so performance rankings cannot be established. The specification data, however, defines the roles. The RX 6550S is a graphics solution for integrated or mobile systems that need display output and standard rendering APIs. The H20 is a high-throughput compute engine for workloads that require massive memory bandwidth and tensor operations, with no display capability.

The H20’s FP32 throughput is 8.04 times higher, its memory bandwidth is over 31 times higher, and its memory capacity is 24 times higher. The RX 6550S counters with a higher pixel rate (76.80 GPixel/s versus 47.52 GPixel/s), a higher boost clock (2400 MHz versus 1980 MHz), and a dramatically lower power draw (50 W versus 500 W). The choice between these parts depends entirely on the intended workload. For graphics rendering on portable hardware, the RX 6550S is the only option with display outputs and graphics APIs. For server-side compute with tensor processing and large datasets, the H20 is the only option with those capabilities.

Where Each One Wins

AMD Radeon RX 6550S wins on:

• Pixel fill rate: 76.80 GPixel/s versus 47.52 GPixel/s for the H20.
• Clock frequencies: base 2000 MHz and boost 2400 MHz versus 1830 MHz and 1980 MHz.
• Power efficiency: 50 W TDP versus 500 W TDP.
• Graphics API support: DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4 versus N/A for all three.
• Ray tracing cores: 16 present versus none recorded.
• Display outputs: portable-device dependent versus no outputs.
• ROP count: 32 versus 24.

NVIDIA H20 wins on:

• FP32 compute: 39.54 TFLOPS versus 4.915 TFLOPS, an 8.04 times advantage.
• FP16 compute: 79.07 TFLOPS versus 9.830 TFLOPS, an 8.04 times advantage.
• Memory capacity: 96 GB versus 4 GB, a 24 times advantage.
• Memory bandwidth: 4.03 TB/s versus 128.0 GB/s, a 31.5 times advantage.
• Memory bus width: 6,144 bit versus 64 bit.
• Texture rate: 617.8 GTexel/s versus 153.6 GTexel/s.
• Shading units: 9,984 versus 1,024.
• TMUs: 312 versus 64.
• Tensor cores: 312 versus none.
• Transistor count: 80,000 million versus 5,400 million.
• Die size: 814 mm² versus 107 mm².
• Bus interface: PCIe 5.0 x16 versus PCIe 4.0 x4.

The RX 6550S is the pick for any workload that requires rendering to a display, using DirectX or Vulkan, or operating within a low-power mobile chassis. Its higher pixel rate and ray tracing support give it a graphics-oriented profile. The H20 is the pick for compute-heavy server workloads, particularly those using tensor cores or needing the 96 GB HBM3 pool. Its lack of display outputs and graphics APIs makes it unsuitable for conventional gaming or desktop use. The recorded data shows no benchmark overlap, so the decision rests on the specification gaps: one part is a mobile graphics processor, the other is a server compute accelerator with no rendering capabilities.