Intel Arc G3 vs NVIDIA H20 NVL16 Comparison

Where Each One Wins

The benchmark data for the Intel Arc G3 and the NVIDIA H20 NVL16 shows no direct head-to-head measurements, so the analysis must rely entirely on their recorded hardware specifications and the architecture each one uses. The Intel Arc G3 is an integrated graphics processor (IGP) built for portable devices, while the NVIDIA H20 NVL16 is a server-class accelerator module. These are not competing in the same segment, but the data allows for a clear separation of strengths.

The Intel Arc G3 wins in the domain of integrated graphics and low-power mobile computing. It uses a system-shared memory architecture, which means it does not carry dedicated VRAM. Its base clock is 300 MHz and its boost clock reaches 2400 MHz, which are figures typical of a power-efficient IGP. The GPU has 1280 shading units, 40 texture mapping units, and 20 raster output units, along with 10 ray tracing cores. Its pixel rate is recorded at 48.00 GPixel/s and its texture rate at 96.00 GTexel/s. The FP32 compute is 6.144 TFLOPS, while FP16 reaches 12.29 TFLOPS with a 2:1 ratio. The slot width is IGP, power connectors are listed as none, and the TDP is 25 W. This makes it a clear winner for any use case that requires a GPU integrated directly into the processor, with no additional power or space budget.

The NVIDIA H20 NVL16 wins in every category that involves raw compute, memory capacity, and server deployment. It is built on the GH100 chip with the Hopper architecture, fabricated on a 5 nm process at TSMC. It has 80,000 million transistors on a die size of 814 mm², yielding a transistor density of 98.3 million transistors per square millimeter. The base clock is 1830 MHz and the boost clock is 1980 MHz. Memory is a dedicated 96 GB of HBM3 on a 6144-bit bus, with memory clocks at 1313 MHz and effective speed of 5.3 Gbps, producing a bandwidth of 4.03 TB/s. The GPU has 9984 shading units, 312 TMUs, 24 ROPs, and 312 tensor cores. Its pixel rate is 47.52 GPixel/s, texture rate is 617.8 GTexel/s, FP32 is 39.54 TFLOPS, and FP16 is 79.07 TFLOPS. The TDP is 400 W, it uses an SXM Module slot, and requires a suggested PSU of 800 W. The bus interface is PCIe 5.0 x16, and it has no display outputs.

The data indicates that the Arc G3 is the only one of the two with any display output capability, as it is listed as portable device dependent. The H20 NVL16 has no outputs at all, confirming its role as a compute-only accelerator. For any workload that depends on rendering to a screen, the Arc G3 wins by default. For any workload that depends on massive parallel processing, memory bandwidth, or tensor operations, the H20 NVL16 wins decisively.

Architecture Differences

The two GPUs come from entirely different architectural lineages. The Intel Arc G3 uses the Xe3-LPG architecture, which is part of the Panther Lake chip and belongs to the Arc Graphics-M generation. It is produced on a 3 nm process at Intel's foundry. The transistor count and die size are unknown, and there is no recorded transistor density. This is a mobile-first design, integrated into a processor, and its memory interface is fully system shared, meaning there is no dedicated VRAM and the bandwidth is system dependent.

The NVIDIA H20 NVL16 uses the Hopper architecture on the GH100 chip, produced on a 5 nm process at TSMC. It has a recorded transistor count of 80,000 million, a die size of 814 mm², and a transistor density of 98.3 million transistors per square millimeter. The H20 has 9984 shading units, 312 TMUs, and 24 ROPs, but it does not list ray tracing cores. Instead, it has 312 tensor cores, which are essential for AI and deep learning workloads. The Arc G3 has 10 ray tracing cores and no tensor cores listed.

Memory architecture is fundamentally different. The Arc G3 uses system shared memory in both size and type, with a system shared bus width and system dependent bandwidth. The H20 NVL16 uses 96 GB of HBM3 on a 6144-bit bus, with a fixed 4.03 TB/s bandwidth. This is a dedicated, high-bandwidth memory subsystem designed for server workloads.

The API support also diverges sharply. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H20 NVL16 lists N/A for DirectX, OpenGL, and Vulkan, which means it is not designed for traditional graphics API workloads at all. It is a compute and tensor-focused accelerator.

Clock behavior differs as well. The Arc G3 has a base clock of 300 MHz and a boost of 2400 MHz, a wide range typical of power-managed integrated GPUs. The H20 has a base of 1830 MHz and a boost of 1980 MHz, a much narrower range, indicating a sustained high-power server profile. The H20 also has a predecessor in Server Ada and a successor in Server Blackwell, while the Arc G3 has no recorded predecessor or successor.

FAQ

Q: Which GPU has a higher FP32 compute throughput?

A: The NVIDIA H20 NVL16 records 39.54 TFLOPS of FP32 compute, while the Intel Arc G3 records 6.144 TFLOPS. The H20 is approximately 6.4 times faster in FP32.

Q: Can the NVIDIA H20 NVL16 be used for display output?

A: No. The H20 NVL16 lists display outputs as none. The Intel Arc G3 is the only one with display output capability, listed as portable device dependent.

Q: What memory does the Intel Arc G3 use?

A: The Arc G3 uses system shared memory for size, type, and bus width. Its bandwidth is listed as system dependent, meaning it relies on the host system's memory configuration.

Q: How much memory does the NVIDIA H20 NVL16 have and what is its bandwidth?

A: The H20 NVL16 has 96 GB of HBM3 memory on a 6144-bit bus, with a bandwidth of 4.03 TB/s.

Q: Does the NVIDIA H20 NVL16 support DirectX or Vulkan?

A: No. The recorded API support for DirectX, OpenGL, and Vulkan is N/A for the H20 NVL16. The Intel Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What is the power consumption difference?

A: The Intel Arc G3 has a TDP of 25 W and uses no power connectors. The NVIDIA H20 NVL16 has a TDP of 400 W and requires a suggested PSU of 800 W.

Specification Differences

The table below lists only the fields where the two GPUs differ, based on the recorded data.

| Field | Intel Arc G3 | NVIDIA H20 NVL16 |

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

| Chip | Panther Lake | GH100 |

| Architecture | Xe3-LPG | Hopper |

| Generation | Arc Graphics-M (Panther Lake) | Server Hopper (Hxx) |

| Process Node | 3 nm | 5 nm |

| Foundry | Intel | TSMC |

| Transistors | unknown | 80,000 million |

| Die Size | unknown | 814 mm² |

| Transistor Density | null | 98.3M / mm² |

| Base Clock | 300 MHz | 1830 MHz |

| Boost Clock | 2400 MHz | 1980 MHz |

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

| Memory Size | System Shared | 96 GB |

| Memory Type | System Shared | HBM3 |

| Memory Bus Width | System Shared | 6144 bit |

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

| Shading Units | 1280 | 9984 |

| TMUs | 40 | 312 |

| ROPs | 20 | 24 |

| RT Cores | 10 | null |

| Tensor Cores | null | 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 | 400 W |

| Slot Width | IGP | SXM Module |

| Power Connectors | None | null |

| Suggested PSU | null | 800 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 | 2025-09-01 |

| Predecessor | null | Server Ada |

| Successor | null | Server Blackwell |

Head-to-Head Benchmarks

There are no recorded head-to-head benchmark results between the Intel Arc G3 and the NVIDIA H20 NVL16. The wins and losses must be inferred from the specification data, which shows a clear separation of capabilities.

The largest wins for the H20 NVL16 are in compute throughput and memory bandwidth. In FP32, the H20 delivers 39.54 TFLOPS against the Arc G3's 6.144 TFLOPS, a difference of roughly 33.4 TFLOPS in absolute terms. In FP16, the H20 reaches 79.07 TFLOPS while the Arc G3 reaches 12.29 TFLOPS, a difference of roughly 66.8 TFLOPS. The H20 also holds a massive advantage in texture rate, with 617.8 GTexel/s versus 96.00 GTexel/s, which is about 6.4 times higher. The pixel rates are nearly identical: the Arc G3 records 48.00 GPixel/s and the H20 records 47.52 GPixel/s, a difference of only 0.48 GPixel/s in favor of the Arc G3.

Memory bandwidth is another decisive H20 win. The H20 has 4.03 TB/s of dedicated HBM3 bandwidth on a 6144-bit bus, while the Arc G3 has system dependent bandwidth on a system shared bus. The H20 also has 9984 shading units versus 1280, and 312 tensor cores versus none.

The Arc G3 wins in power efficiency and integration. Its TDP is 25 W, which is 16 times lower than the H20's 400 W. It requires no power connectors and no suggested PSU, while the H20 requires an 800 W PSU. The Arc G3 also has display outputs, while the H20 has none. The Arc G3 records a slightly higher pixel rate of 48.00 GPixel/s versus 47.52 GPixel/s, a marginal win.

The release dates differ as well. The Arc G3 has a release date of 2026-05-31, while the H20 NVL16 has a release date of 2025-09-01. The H20 is also part of a defined product lineage, with a predecessor in Server Ada and a successor in Server Blackwell, whereas the Arc G3 has no such lineage recorded.

The Verdict

The data shows that the Intel Arc G3 and the NVIDIA H20 NVL16 serve entirely different purposes. The Arc G3 is an integrated GPU for portable devices, with a 25 W TDP, system shared memory, and support for DirectX 12 Ultimate, OpenGL, and Vulkan. It is the only one of the two with any display output capability. Its performance profile is modest but sufficient for integrated graphics duties.

The NVIDIA H20 NVL16 is a server accelerator with 400 W TDP, 96 GB of HBM3 memory, 4.03 TB/s bandwidth, and 312 tensor cores. It has no display outputs and no graphics API support, confirming it as a compute-only device for server workloads. Its FP32 and FP16 throughput are roughly 6.4 times higher than the Arc G3, and its texture rate is roughly 6.4 times higher as well.

For a user or system integrator building a portable device with integrated graphics, the Arc G3 is the appropriate choice. It consumes far less power, needs no external power connector, and provides display outputs. For a server deployment requiring massive memory bandwidth, high FP16 throughput, and tensor core capability, the H20 NVL16 is the appropriate choice, provided the system can supply an 800 W PSU.

There is no overlap in their intended use cases. The Arc G3 wins on integration, portability, and graphics API support. The H20 NVL16 wins on compute, memory, and tensor performance. Neither can substitute for the other in their respective domains.