Intel Arc G3 vs NVIDIA H20 Comparison

Head-to-Head Benchmarks

The recorded database contains no direct head-to-head benchmark comparisons between the Intel Arc G3 and the NVIDIA H20. Neither part has accumulated an average benchmark score, and the win counters for both sides rest at zero. This absence of measured data is itself informative: the two products occupy entirely different segments, so no standardized workload has yet placed them on the same test bed.

What can be compared quantitatively are their theoretical compute ceilings. The NVIDIA H20 delivers 39.54 TFLOPS of FP32 throughput, which is 6.43 times the 6.144 TFLOPS of the Intel Arc G3. In FP16, the gap narrows slightly in ratio but remains enormous: the H20 reaches 79.07 TFLOPS against the Arc G3's 12.29 TFLOPS, a 6.43x advantage as well. Both parts apply a 2:1 ratio for FP16 versus FP32, so their relative standing is identical across these two precision formats.

Pixel throughput is nearly equal, which is surprising given the gulf in raw compute. The Arc G3 produces 48.00 GPixel/s while the H20 produces 47.52 GPixel/s. The Intel part actually holds a marginal lead here, 1.01% higher, despite having only 20 ROPs versus 24 on the NVIDIA part. Texture throughput tells a different story: the H20's 617.8 GTexel/s crushes the Arc G3's 96.00 GTexel/s, a 6.44x margin that tracks the TMU count difference of 312 versus 40.

Clock behavior shows opposite design philosophies. The Arc G3 has a base clock of 300 MHz and a boost of 2400 MHz, an 8x boost range that suggests aggressive power management on a mobile-class part. The H20 runs at 1830 MHz base and 1980 MHz boost, a modest 8.2% boost headroom typical of a high-power server accelerator that runs near its ceiling continuously.

Architecture Differences

The two GPUs come from different foundries, different process nodes, and different architectural lineages. Intel builds the Arc G3 on its own 3 nm process using the Xe3-LPG architecture, part of the Panther Lake chip and the Arc Graphics-M generation. NVIDIA builds the H20 on TSMC's 5 nm process using the Hopper architecture with the GH100 chip, belonging to the Server Hopper generation.

Transistor data is only available for the NVIDIA side. The H20 packs 80,000 million transistors on an 814 mm² die, yielding a transistor density of 98.3M per mm². Intel has not disclosed transistor counts or die size for the Arc G3, so no density comparison is possible. The H20's predecessor is Server Ada and its successor is Server Blackwell, placing it in a well-defined product lineage. The Arc G3 lists no predecessor or successor in the database.

Memory architecture diverges completely. The Arc G3 uses system shared memory, meaning its capacity, type, bus width, and bandwidth are all dependent on the host platform; the database records its memory bandwidth as "System Dependent". The H20 carries 96 GB of dedicated HBM3 memory on a 6144-bit bus, delivering 4.03 TB/s of bandwidth. The H20's memory clock is 1313 MHz with 5.3 Gbps effective transfer, while the Arc G3's memory clock is also listed as "System Shared".

Compute resources scale with their intended workloads. The Arc G3 has 1280 shading units, 40 TMUs, 20 ROPs, and 10 ray tracing cores. The H20 has 9984 shading units, 312 TMUs, and 24 ROPs; it lists no ray tracing cores in the database. Instead, the H20 carries 312 tensor cores, a resource the Arc G3 does not list at all. This split defines their respective strengths: the Arc G3 is oriented toward graphics workloads with ray tracing support, while the H20 is oriented toward tensor-heavy server compute.

API support differs sharply. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for DirectX, OpenGL, and Vulkan, confirming that it is not designed for conventional graphics rendering. The Arc G3's display outputs are listed as "Portable Device Dependent", while the H20 has no display outputs whatsoever.

Power and physical form factor reinforce the segmentation. The Arc G3 draws 25 W, uses an IGP slot width, has no power connectors, and connects via an IGP bus interface. The H20 draws 500 W, ships as an SXM Module, requires a 900 W suggested PSU, and connects via PCIe 5.0 x16.

Where Each One Wins

The data supports a clean functional split. The Arc G3 wins in any scenario requiring standard graphics rendering, DirectX 12 Ultimate support, Vulkan 1.4, or OpenGL 4.6. Its 25 W power envelope and IGP form factor make it suitable for portable devices where the display output is dependent on the host. The near-parity in pixel rate, 48.00 GPixel/s versus 47.52 GPixel/s, means the Arc G3 can match the H20 in pure pixel fill work while consuming 95% less power.

The NVIDIA H20 wins decisively in raw compute throughput. Its FP32 output of 39.54 TFLOPS and FP16 output of 79.07 TFLOPS position it for server-class floating-point workloads. The 4.03 TB/s memory bandwidth, backed by 96 GB of HBM3, provides a data delivery capacity that the Arc G3 cannot approach because its memory bandwidth is system dependent. The 312 tensor cores give the H20 a dedicated matrix-math engine that the Arc G3 does not offer.

Texture-heavy workloads also favor the H20. Its 617.8 GTexel/s versus 96.00 GTexel/s is a 6.44x advantage. The H20's 9984 shading units outnumber the Arc G3's 1280 by a factor of 7.8, so any workload that scales with shader count will strongly favor the NVIDIA part.

The release timeline shows the H20 entered the market earlier. Its release date is January 31, 2024, while the Arc G3 is dated May 31, 2026. Both remain in active production status.

FAQ

Q: Which GPU has higher FP32 performance?

A: The NVIDIA H20 delivers 39.54 TFLOPS, which is 6.43 times the 6.144 TFLOPS of the Intel Arc G3.

Q: Do both GPUs support the same graphics APIs?

A: No. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 lists N/A for all three APIs, indicating no graphics API support.

Q: How much memory does each GPU have?

A: The H20 has 96 GB of HBM3 memory with a 6144-bit bus and 4.03 TB/s bandwidth. The Arc G3 uses system shared memory, so its capacity and bandwidth are dependent on the host system.

Q: What is the power consumption difference?

A: The Arc G3 has a 25 W TDP, while the H20 has a 500 W TDP. The H20 also requires a 900 W suggested PSU.

Q: Does the Arc G3 have tensor cores?

A: The database lists no tensor cores for the Arc G3. The H20 has 312 tensor cores.

Q: Which GPU has ray tracing support?

A: The Arc G3 lists 10 ray tracing cores. The H20 does not list any ray tracing cores in the database.

Specification Differences

| Field | Intel Arc G3 | NVIDIA H20 |

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

| Architecture | Xe3-LPG | Hopper |

| Process Node | 3 nm | 5 nm |

| Foundry | Intel | TSMC |

| Transistors | Unknown | 80,000 million |

| Die Size | Unknown | 814 mm² |

| Transistor Density | Not listed | 98.3M / mm² |

| Base Clock | 300 MHz | 1830 MHz |

| Boost Clock | 2400 MHz | 1980 MHz |

| Memory Size | System Shared | 96 GB |

| Memory Type | System Shared | HBM3 |

| Memory Bus | System Shared | 6144 bit |

| Memory Bandwidth | System Dependent | 4.03 TB/s |

| Memory Clock | System Shared | 1313 MHz 5.3 Gbps effective |

| Shading Units | 1280 | 9984 |

| TMUs | 40 | 312 |

| ROPs | 20 | 24 |

| RT Cores | 10 | Not listed |

| Tensor Cores | Not listed | 312 |

| Pixel Rate | 48.00 GPixel/s | 47.52 GPixel/s |

| Texture Rate | 96.00 GTexel/s | 617.8 GTexel/s |

| FP32 | 6.144 TFLOPS | 39.54 TFLOPS |

| FP16 | 12.29 TFLOPS (2:1) | 79.07 TFLOPS (2:1) |

| TDP | 25 W | 500 W |

| Slot Width | IGP | SXM Module |

| Power Connectors | None | Not listed |

| Suggested PSU | Not listed | 900 W |

| Bus Interface | IGP | PCIe 5.0 x16 |

| Display Outputs | Portable Device Dependent | No outputs |

| DirectX | 12 Ultimate (12_2) | N/A |

| OpenGL | 4.6 | N/A |

| Vulkan | 1.4 | N/A |

| Release Date | 2026-05-31 | 2024-01-31 |

| Predecessor | Not listed | Server Ada |

| Successor | Not listed | Server Blackwell |

The Verdict

The data describes two products with no meaningful overlap in purpose. The Intel Arc G3 is a 25 W integrated graphics processor built on a 3 nm Intel process, supporting the full modern graphics API stack with DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4, and 10 ray tracing cores. It matches the H20 in pixel rate almost exactly, 48.00 GPixel/s versus 47.52 GPixel/s, while consuming 20 times less power. Its system shared memory model ties performance to the host platform.

The NVIDIA H20 is a 500 W server accelerator built on TSMC's 5 nm process with 80,000 million transistors. It offers 6.43 times the FP32 throughput, 6.44 times the texture rate, 7.8 times the shading units, and 312 tensor cores. Its 96 GB of HBM3 memory with 4.03 TB/s bandwidth provides a memory subsystem the Arc G3 cannot match, but it has no graphics API support and no display outputs.

The selection depends entirely on workload class. Systems requiring rasterization, ray tracing, or standard graphics APIs should use the Arc G3. Systems requiring dense floating-point compute, tensor operations, or massive memory bandwidth should use the H20. Both parts remain in active production, so neither is a legacy choice. The Arc G3's later release date, 2026-05-31 versus 2024-01-31, indicates Intel brought this part to market after NVIDIA had already established the H20 in its server segment. The recorded data shows no benchmark overlap, and the specification sheets confirm that none should be expected.