Intel Data Center GPU Max Subsystem vs NVIDIA H20 Comparison

FAQ

Q: What are the two devices compared here?

A: The Intel Data Center GPU Max Subsystem, based on the Ponte Vecchio chip and Generation 12.5 architecture, and the NVIDIA H20, based on the GH100 chip and Hopper architecture.

Q: What is the memory configuration difference?

A: The Intel subsystem carries 128 GB of HBM2e memory on an 8192-bit bus with 3.21 TB/s bandwidth, while the NVIDIA H20 uses 96 GB of HBM3 on a 6144-bit bus with 4.03 TB/s bandwidth.

Q: How do the power requirements compare?

A: The Intel subsystem has a TDP of 2400 W with a suggested PSU of 2800 W, whereas the NVIDIA H20 has a TDP of 500 W and a suggested PSU of 900 W.

Q: What are the respective FP32 and FP16 throughput figures?

A: The Intel device delivers 52.43 TFLOPS FP32 and 52.43 TFLOPS FP16 (1:1 ratio). The NVIDIA H20 delivers 39.54 TFLOPS FP32 and 79.07 TFLOPS FP16 (2:1 ratio).

Q: What is the process node and foundry for each?

A: Intel uses a 10 nm process at Intel with 100,000 million transistors on a 1280 mm² die. NVIDIA uses a 5 nm process at TSMC with 80,000 million transistors on an 814 mm² die.

Q: What are the boost clock speeds?

A: The Intel subsystem boosts to 1600 MHz from a 900 MHz base. The NVIDIA H20 boosts to 1980 MHz from a 1830 MHz base.

The Verdict

The data shows two distinctly different design philosophies. The Intel Data Center GPU Max Subsystem is built around massive parallel throughput and memory capacity, while the NVIDIA H20 prioritizes memory bandwidth and FP16 compute efficiency within a far lower power envelope.

For workloads that depend on raw FP32 compute and enormous memory capacity, the Intel subsystem holds the advantage: 52.43 TFLOPS FP32 versus 39.54 TFLOPS, and 128 GB versus 96 GB of memory. The Intel part also has far more shading units (16384 versus 9984), texture mapping units (1024 versus 312), and a wider memory bus (8192-bit versus 6144-bit). This suggests a design aimed at dense compute tasks where the added memory capacity and larger shader array matter more than clock speed.

The NVIDIA H20 counters with nearly double the FP16 throughput (79.07 TFLOPS versus 52.43 TFLOPS), higher memory bandwidth (4.03 TB/s versus 3.21 TB/s), and a dramatically lower TDP of 500 W versus 2400 W. For systems with power or cooling constraints, the H20 is the only viable option between the two. Its 5 nm process and higher transistor density (98.3M / mm² versus 78.1M / mm²) also indicate a more modern fabrication approach.

The Intel subsystem requires a suggested PSU of 2800 W, which implies substantial infrastructure demands. The H20's suggested PSU of 900 W fits standard server configurations. Both cards have no display outputs and use PCIe 5.0 x16 interfaces. The H20 is an SXM module while the Intel part is dual-slot.

There are no recorded benchmark scores in the database for either device, and both sit at the 50th percentile against all GPUs. This means any performance ranking must rely on the architectural and specification differences rather than measured results. The production status for both is active, with the Intel device released on 2023-01-09 and the NVIDIA H20 released on 2024-01-31.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark results between these two devices. Both entries list empty benchmark arrays, zero wins each, and no nearest rivals. Therefore, any comparison must be derived from the specification sheet alone.

The most significant numerical gaps appear in compute throughput and memory configuration. In FP32, the Intel subsystem leads by 12.89 TFLOPS (52.43 versus 39.54), a 32.6% advantage. This gap reflects the Intel part's larger shader array, with 16384 shading units versus 9984, and its higher texture rate of 1,638.4 GTexel/s versus 617.8 GTexel/s. The Intel part also leads in FP16 when measured at a 1:1 ratio, but the H20's 2:1 FP16 implementation more than compensates, delivering 79.07 TFLOPS against 52.43 TFLOPS, a 50.8% advantage for NVIDIA.

Memory bandwidth favors the H20 at 4.03 TB/s versus 3.21 TB/s, a 25.5% difference. However, the Intel subsystem has 33.3% more memory capacity (128 GB versus 96 GB) and a wider bus (8192-bit versus 6144-bit). The H20's higher bandwidth comes from HBM3 memory running at 5.3 Gbps effective, while the Intel part uses HBM2e at 3.1 Gbps effective.

Clock speeds strongly favor the H20. Its base clock of 1830 MHz is more than double the Intel base of 900 MHz, and the boost clock of 1980 MHz exceeds the Intel boost of 1600 MHz by 23.75%. These higher clocks explain how the H20 achieves competitive throughput with fewer shading units.

Pixel rate is another differentiator. The Intel part lists 0 MPixel/s, while the H20 delivers 47.52 GPixel/s. The Intel part has 0 ROPs, which explains this metric. The H20 has 24 ROPs. For workloads that involve rasterization or pixel output, the H20 is the only option. The Intel subsystem is clearly not designed for such tasks.

The transistor counts show a reversal. Intel packs 100,000 million transistors on a 1280 mm² die, while NVIDIA fits 80,000 million on 814 mm². The resulting densities are 78.1M / mm² for Intel and 98.3M / mm² for NVIDIA. This confirms the H20's more advanced process node and tighter integration.

Specification Differences

| Specification | Intel Data Center GPU Max Subsystem | NVIDIA H20 |

|---|---|---|

| Process Node | 10 nm | 5 nm |

| Foundry | Intel | TSMC |

| Transistors | 100,000 million | 80,000 million |

| Die Size | 1280 mm² | 814 mm² |

| Transistor Density | 78.1M / mm² | 98.3M / mm² |

| Base Clock | 900 MHz | 1830 MHz |

| Boost Clock | 1600 MHz | 1980 MHz |

| Memory Size | 128 GB | 96 GB |

| Memory Type | HBM2e | HBM3 |

| Memory Bus | 8192 bit | 6144 bit |

| Memory Bandwidth | 3.21 TB/s | 4.03 TB/s |

| Memory Clock | 1565 MHz, 3.1 Gbps effective | 1313 MHz, 5.3 Gbps effective |

| Shading Units | 16384 | 9984 |

| TMUs | 1024 | 312 |

| ROPs | 0 | 24 |

| RT Cores | 128 | null |

| Tensor Cores | null | 312 |

| Pixel Rate | 0 MPixel/s | 47.52 GPixel/s |

| Texture Rate | 1,638.4 GTexel/s | 617.8 GTexel/s |

| FP32 | 52.43 TFLOPS | 39.54 TFLOPS |

| FP16 | 52.43 TFLOPS (1:1) | 79.07 TFLOPS (2:1) |

| TDP | 2400 W | 500 W |

| Slot Width | Dual-slot | SXM Module |

| Power Connectors | 1x 16-pin | null |

| Suggested PSU | 2800 W | 900 W |

| DirectX Support | 12 (12_1) | N/A |

| OpenGL Support | 4.6 | N/A |

| Vulkan Support | null | N/A |

| Dimensions | 267 mm, 10.5 inches length | null |

| Release Date | 2023-01-09 | 2024-01-31 |

| Predecessor | null | Server Ada |

| Successor | H3C Graphics | Server Blackwell |

Architecture Differences

The Intel Data Center GPU Max Subsystem uses the Ponte Vecchio chip built on Generation 12.5 architecture at a 10 nm process. This is a dual-slot card with a 1280 mm² die, the largest in this comparison. It has 128 ray tracing cores but no tensor cores. The architecture uses a 1:1 FP16 to FP32 ratio, meaning FP16 throughput matches FP32 exactly at 52.43 TFLOPS. The memory subsystem relies on HBM2e across an 8192-bit bus, which is the widest bus in this comparison. The card supports DirectX 12 (12_1) and OpenGL 4.6, with no Vulkan support listed. There are no display outputs.

The NVIDIA H20 uses the GH100 chip built on Hopper architecture at a 5 nm process from TSMC. This is an SXM module with an 814 mm² die. It has 312 tensor cores and no ray tracing cores. The architecture uses a 2:1 FP16 to FP32 ratio, achieving 79.07 TFLOPS FP16 from a 39.54 TFLOPS FP32 base. The memory subsystem uses HBM3 across a 6144-bit bus, delivering higher bandwidth than the Intel part. The H20 lists N/A for DirectX, OpenGL, and Vulkan, indicating no graphics API support. There are no display outputs.

The transistor density difference is notable. Intel achieves 78.1M transistors per mm² on its 10 nm process, while NVIDIA achieves 98.3M per mm² on 5 nm. This means the H20 packs more transistors per area despite having fewer total transistors. The higher density and smaller die contribute to the H20's significantly lower TDP of 500 W versus 2400 W.

The clock architecture also differs fundamentally. The H20 runs at nearly double the base clock of the Intel part (1830 MHz versus 900 MHz) and has a boost clock of 1980 MHz versus 1600 MHz. This higher clock speed allows the H20 to compensate for its smaller shader array in certain workloads.

The Intel part has no ROPs and a pixel rate of 0 MPixel/s, while the H20 has 24 ROPs and a pixel rate of 47.52 GPixel/s. This indicates the Intel subsystem is not intended for any pixel-processing workload. The H20's texture rate of 617.8 GTexel/s is significantly lower than the Intel part's 1,638.4 GTexel/s, reflecting the Intel part's much larger TMU count (1024 versus 312).

Where Each One Wins

FP32 compute workloads: The Intel subsystem wins decisively with 52.43 TFLOPS versus 39.54 TFLOPS, a 32.6% advantage. The 16384 shading units and 1024 TMUs give it substantial raw throughput for single-precision math. The texture rate of 1,638.4 GTexel/s also far exceeds the H20's 617.8 GTexel/s.

FP16 compute workloads: The NVIDIA H20 wins with 79.07 TFLOPS versus 52.43 TFLOPS, a 50.8% advantage. The 2:1 FP16 ratio means the H20 can process half-precision data at nearly twice its FP32 rate. The presence of 312 tensor cores further supports mixed-precision and tensor-based operations.

Memory capacity: The Intel subsystem wins with 128 GB versus 96 GB, a 33.3% advantage. For workloads that require large model residency or massive datasets in memory, the Intel part can hold more data without host transfers.

Memory bandwidth: The NVIDIA H20 wins with 4.03 TB/s versus 3.21 TB/s, a 25.5% advantage. This higher bandwidth benefits memory-bound workloads and can compensate for the smaller capacity.

Power efficiency: The NVIDIA H20 wins decisively. At 500 W TDP versus 2400 W, the H20 delivers its performance at 20.8% of the power draw. The suggested PSU of 900 W versus 2800 W reinforces this. For dense server deployments or systems with power limits, the H20 is the only practical choice.

Pixel processing: The NVIDIA H20 is the only option, as the Intel part has 0 ROPs and 0 MPixel/s pixel rate. The H20's 24 ROPs and 47.52 GPixel/s make it suitable for any workload involving pixel output.

Ray tracing: The Intel subsystem has 128 RT cores, while the H20 has none. For ray tracing workloads, the Intel part is the only one with dedicated hardware.

Form factor flexibility: The H20's SXM module and lack of power connectors (null) indicate a board-level integration designed for proprietary server chassis. The Intel dual-slot card with a 1x 16-pin connector may fit more standardized server configurations, though its 267 mm length and 2800 W PSU requirement impose significant infrastructure demands.

API support: The Intel subsystem supports DirectX 12 (12_1) and OpenGL 4.6, while the H20 lists N/A for all graphics APIs. For any compute stack that relies on these APIs, the Intel part is the only option. The H20's lack of graphics API support suggests it is strictly a compute accelerator.