AMD Xbox Series X 6nm GPU vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results exist between the AMD Xbox Series X 6nm GPU and the NVIDIA H20 in the database. Both products have an empty benchmark array, and the wins count for each side is zero. However, the specification sheets provide enough computed throughput metrics to establish a comparative frame. The NVIDIA H20 leads in raw compute and memory bandwidth, while the AMD part holds advantages in pixel throughput and output capabilities.

The NVIDIA H20 delivers 39.54 TFLOPS of FP32 compute, which is 3.25 times the 12.15 TFLOPS offered by the AMD Xbox Series X 6nm GPU. In FP16, the H20 reaches 79.07 TFLOPS (2:1), while the AMD part achieves 24.29 TFLOPS (2:1), a ratio of roughly 3.25 again. Texture rate favors NVIDIA as well: 617.8 GTexel/s versus 379.6 GTexel/s, a 1.63 times advantage. Memory bandwidth is decisively NVIDIA's: 4.03 TB/s from the HBM3 stack compared to 560.0 GB/s of GDDR6, a 7.2 times difference.

The AMD Xbox Series X 6nm GPU counters in pixel throughput. Its 116.8 GPixel/s is 2.46 times the H20's 47.52 GPixel/s. That gap stems from the AMD part's 64 ROPs versus 24 ROPs on the H20. The AMD GPU also supports display output through 1x HDMI 2.1, while the H20 lists no outputs at all. For a console-derived chip, the pixel fill rate is the standout metric in this comparison.

Clock behavior differs notably. The H20 runs a base clock of 1830 MHz and a boost clock of 1980 MHz. The AMD Xbox Series X 6nm GPU has no base or boost clock listed, only a memory clock of 1750 MHz (14 Gbps effective). The H20's memory clock is 1313 MHz (5.3 Gbps effective), which is lower in raw frequency but paired with a 6144 bit bus and HBM3 to achieve far higher bandwidth.

Shading resources also favor NVIDIA. The H20 carries 9984 shading units, 312 TMUs, and 312 tensor cores. The AMD part has 3328 shading units and 208 TMUs, with no tensor core count listed. In absolute shading unit count, the H20 has 3.0 times the AMD GPU. The AMD console GPU does have more ROPs, 64 versus 24, which explains its pixel rate advantage despite the smaller overall compute pipeline.

Transistor scale and die area reinforce the H20's server-class positioning. The H20 uses 80,000 million transistors on an 814 mm² die, with a transistor density of 98.3M per mm². The AMD Xbox Series X 6nm GPU uses 15,300 million transistors, with its die size recorded as unknown. The H20's transistor count is 5.23 times that of the AMD chip.

Power draw and form factor separate the two clearly. The H20 is rated at 500 W TDP and comes as an SXM module with a suggested 900 W PSU. The AMD part draws 200 W TDP. The H20 requires PCIe 5.0 x16 connectivity, while the AMD GPU lists no bus interface. The H20's physical dimensions are not recorded; the AMD console GPU measures 301 mm in length, 151 mm in height, and 151 mm in width.

FAQ

Q: Which GPU has higher FP32 compute performance?

A: The NVIDIA H20 records 39.54 TFLOPS of FP32, which is 3.25 times the 12.15 TFLOPS of the AMD Xbox Series X 6nm GPU.

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

A: The NVIDIA H20 offers 96 GB of HBM3 memory on a 6144 bit bus. The AMD Xbox Series X 6nm GPU offers 10 GB of GDDR6 memory on a 320 bit bus.

Q: Which GPU has higher pixel fill rate?

A: The AMD Xbox Series X 6nm GPU records 116.8 GPixel/s, which is 2.46 times the H20's 47.52 GPixel/s, driven by its 64 ROPs versus 24 ROPs on the H20.

Q: Do both GPUs support display outputs?

A: No. The AMD Xbox Series X 6nm GPU includes 1x HDMI 2.1 output. The NVIDIA H20 lists no display outputs.

Q: What are the TDP values for each GPU?

A: The AMD Xbox Series X 6nm GPU is rated at 200 W. The NVIDIA H20 is rated at 500 W, with a suggested PSU of 900 W.

Q: Which GPU has more shading units?

A: The NVIDIA H20 has 9984 shading units, which is 3.0 times the 3328 shading units on the AMD Xbox Series X 6nm GPU.

Architecture Differences

The AMD Xbox Series X 6nm GPU is built on RDNA 2.0 architecture under the chip name Scarlett 6nm. It belongs to the Console GPU (Microsoft) generation and uses a 6 nm process at TSMC with 15,300 million transistors. The NVIDIA H20 uses Hopper architecture with the GH100 chip, belongs to the Server Hopper (Hxx) generation, and uses a 5 nm process at TSMC with 80,000 million transistors on an 814 mm² die.

The memory architectures are fundamentally different. The AMD part uses 10 GB of GDDR6 on a 320 bit bus, achieving 560.0 GB/s. The H20 uses 96 GB of HBM3 on a 6144 bit bus, achieving 4.03 TB/s. The H20's memory subsystem is designed for capacity and bandwidth, while the AMD chip's GDDR6 configuration suits a console-class unified memory layout.

Compute resources diverge sharply. The H20 packs 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores. The AMD Xbox Series X 6nm GPU has 3328 shading units, 208 TMUs, and 64 ROPs, with no tensor core or RT core count listed. The H20's tensor cores provide dedicated matrix math acceleration, a feature absent from the AMD console GPU's recorded specifications.

The H20's pixel rate is lower than the AMD part's despite the larger shader array, because ROP count is only 24 versus 64. Texture rate favors the H20 at 617.8 GTexel/s versus 379.6 GTexel/s, reflecting its higher TMU count of 312 versus 208.

Clock behavior differs. The H20 lists base and boost clocks of 1830 MHz and 1980 MHz. The AMD part has no base or boost clock recorded, only a memory clock of 1750 MHz (14 Gbps effective). The H20's memory clock is 1313 MHz (5.3 Gbps effective). The H20's higher core clocks contribute to its compute lead.

API support separates the two. The AMD Xbox Series X 6nm GPU supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.2. The NVIDIA H20 lists N/A for DirectX, OpenGL, and Vulkan, indicating a compute-oriented server role rather than a graphics workload target.

The H20's form factor is an SXM module with PCIe 5.0 x16 bus interface. The AMD part is a console GPU with dimensions of 301 mm by 151 mm by 151 mm and no bus interface listed. The H20 has no recorded dimensions, consistent with a module design rather than a standalone card.

Production status is Active for both. The H20 has a predecessor of Server Ada and a successor of Server Blackwell. The AMD Xbox Series X 6nm GPU has no predecessor or successor listed. Release dates differ: the AMD part entered production on 2024-10-14, while the H20 was released on 2024-01-31.

Specification Differences

The two GPUs differ across nearly every recorded specification field. The AMD Xbox Series X 6nm GPU uses RDNA 2.0 architecture, while the NVIDIA H20 uses Hopper. Process nodes differ: 6 nm versus 5 nm, both at TSMC. Transistor counts are 15,300 million versus 80,000 million, and the H20's die is 814 mm² while the AMD die size is unknown.

Memory differs completely: 10 GB GDDR6 versus 96 GB HBM3, 320 bit versus 6144 bit bus, 560.0 GB/s versus 4.03 TB/s. Shading units are 3328 versus 9984, TMUs are 208 versus 312, and ROPs are 64 versus 24. Tensor cores exist only on the H20 at 312; the AMD part lists none.

Clock rates: the H20 has a base clock of 1830 MHz and boost of 1980 MHz, while the AMD part has no base or boost recorded. Memory clocks are 1750 MHz (14 Gbps effective) for AMD and 1313 MHz (5.3 Gbps effective) for NVIDIA.

Throughput: FP32 is 12.15 TFLOPS versus 39.54 TFLOPS. FP16 is 24.29 TFLOPS versus 79.07 TFLOPS. Pixel rate is 116.8 GPixel/s versus 47.52 GPixel/s. Texture rate is 379.6 GTexel/s versus 617.8 GTexel/s.

Power: TDP is 200 W versus 500 W, with the H20 requiring a suggested 900 W PSU. The H20 uses an SXM module slot width and PCIe 5.0 x16; the AMD part lists no slot width, power connectors, or bus interface.

Display: the AMD GPU has 1x HDMI 2.1 output; the H20 has no outputs. APIs: AMD supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.2; the H20 lists N/A for all three.

Dimensions: the AMD part is 301 mm by 151 mm by 151 mm; the H20 has no recorded dimensions. The H20 has a launch MSRP of 599 USD, while the H20 has no launch MSRP recorded. Release dates: AMD 2024-10-14, NVIDIA 2024-01-31. The H20 has predecessor and successor entries (Server Ada and Server Blackwell); the AMD part has none.

The Verdict

The recorded data supports a clear split based on workload class. The NVIDIA H20 is a server compute accelerator with 3.25 times the FP32 throughput, 7.2 times the memory bandwidth, and 96 GB of HBM3 capacity. It uses 500 W and an SXM module format with no display outputs, and its API support is listed as N/A for graphics standards. This is a data-center part for compute-heavy tasks.

The AMD Xbox Series X 6nm GPU is a console processor with 2.46 times the pixel fill rate of the H20, a 64 ROP configuration, and an HDMI 2.1 output. It draws 200 W, uses GDDR6 memory, and supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.2. Its 10 GB memory capacity and 560.0 GB/s bandwidth are modest next to the H20, but its graphics feature set is complete.

The database places both GPUs at the 50th percentile versus all GPUs, with an average benchmark score of zero for each. No head-to-head results exist. The H20's lead in compute, bandwidth, and tensor core availability makes it the stronger choice for server inference or training workloads. The AMD part's pixel rate, display output, and lower power draw make it the appropriate part for a console-class graphics pipeline. The H20 records 39.54 TFLOPS FP32, 79.07 TFLOPS FP16, and 4.03 TB/s bandwidth. The AMD part records 12.15 TFLOPS FP32, 24.29 TFLOPS FP16, and 560.0 GB/s bandwidth. Neither product's benchmark scores or rival lists are populated, so the verdict rests entirely on the specification deltas.