Intel Arc G3 vs NVIDIA H800 PCIe 80 GB Comparison

Head-to-Head Benchmarks

The recorded data shows no direct head-to-head benchmark results between the Intel Arc G3 and the NVIDIA H800 PCIe 80 GB. Both processors carry a percentile rank of 50 against all GPUs in the database, and neither has an average benchmark score or nearest rival entries. This means the comparison must be built entirely from the architectural and specification fields, which differ so sharply that they describe two completely different classes of hardware.

The Intel Arc G3 is an integrated graphics processor built for portable devices. Its FP32 compute is rated at 6.144 TFLOPS, while the NVIDIA H800 delivers 51.22 TFLOPS. That is roughly 8.3 times the raw single-precision throughput. The gap in FP16 is even wider: the Arc G3 manages 12.29 TFLOPS with a 2:1 ratio, while the H800 reaches 204.9 TFLOPS with a 4:1 ratio. The H800 delivers more than 16 times the half-precision throughput, which matters for AI training and inference workloads where reduced precision is standard.

Rasterization rates also favor the NVIDIA part, though by a smaller margin. The H800 produces 800.3 GTexel/s of texture fill rate against 96.00 GTexel/s on the Arc G3, an 8.3 times advantage. Pixel throughput is closer: the Arc G3 posts 48.00 GPixel/s, while the H800 posts 42.12 GPixel/s. The Intel part actually leads in pixel fill rate by about 14 percent, which is notable because the H800 is a compute-oriented accelerator with only 24 ROPs, while the Arc G3 has 20 ROPs at a much lower clock profile.

Clock behavior illustrates the design intent. The Arc G3 runs a 300 MHz base clock and boosts to 2400 MHz, a wide dynamic range typical of power-sensitive integrated parts. The H800 runs a 1095 MHz base and 1755 MHz boost, a much narrower range. Despite lower clocks, the H800 achieves far higher throughput because it scales across 14592 shading units, 456 TMUs, and 456 tensor cores, versus 1280 shading units, 40 TMUs, and 10 ray tracing cores on the Arc G3. The H800 also carries 456 tensor cores, which have no direct counterpart in the Arc G3 specification, since its tensor core field is null.

The memory subsystem separates these products entirely. The Arc G3 uses System Shared memory with System Dependent bandwidth, meaning its performance scales with the host platform's RAM. The H800 has 80 GB of HBM2e on a 5120-bit bus, delivering 2.04 TB/s of dedicated bandwidth. That bandwidth figure is the single largest numeric gap in the comparison, and it directly explains why the H800 targets large model training and data center inference rather than client graphics.

Where Each One Wins

The Intel Arc G3 wins in the categories that define integrated graphics: power draw, physical footprint, and pixel throughput. Its TDP is 25 W, compared to 350 W for the H800, a 14 times difference. It is an IGP with no power connectors and no suggested PSU requirement, while the H800 is a dual-slot card that needs a 1x 16-pin connector and a 750 W suggested PSU. The Arc G3 also outputs to portable device displays, whereas the H800 has no display outputs at all. For any scenario that requires graphics output on a mobile platform, the Arc G3 is the only one of the two that can function at all.

The Arc G3 also wins on pixel fill rate, as noted above, with 48.00 GPixel/s versus 42.12 GPixel/s. This is a narrow victory, but it indicates that the Intel part is better tuned for traditional 2D and light 3D rasterization work at its intended resolution and power envelope. Its API support is also fully specified: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H800 lists null values for DirectX, OpenGL, and Vulkan, which reflects its role as a compute accelerator with no consumer graphics driver stack in the database.

The NVIDIA H800 wins everywhere raw compute and memory bandwidth are the deciding factors. Its FP32 output is 8.3 times higher, its FP16 output is over 16 times higher, and its texture rate is 8.3 times higher. The 2.04 TB/s memory bandwidth is an order of magnitude beyond anything a shared-memory integrated part can reach, and the 80 GB capacity dwarfs the System Shared allocation of the Arc G3. The H800 also has a much larger physical implementation: 80,000 million transistors on an 814 mm² die with a 98.3M / mm² density, versus an unknown transistor count and die size for the Arc G3. The H800 uses a 5 nm TSMC process, while the Arc G3 uses Intel's 3 nm node.

The H800's release date of March 2023 also predates the Arc G3's May 2026 release, and its predecessor and successor entries (Server Ada and Server Blackwell) show it sits in an established server product line. The Arc G3 has no predecessor or successor listed, which is consistent with a new integrated graphics family.

The Verdict

The data describes two products with almost no functional overlap. The Intel Arc G3 is an integrated GPU for portable devices, with 25 W power draw, shared memory, and display output. The NVIDIA H800 is a 350 W server accelerator with 80 GB of dedicated HBM2e, no display outputs, and massive compute throughput. A user who needs to run a laptop or handheld device without a discrete GPU should choose the Arc G3, because it is the only one that fits that form factor and power budget. A user who needs to train or run large neural networks, process scientific workloads, or handle datasets that exceed the memory capacity of any client GPU should choose the H800, because its 80 GB memory and 2.04 TB/s bandwidth are mandatory for those tasks.

The pixel rate result is a useful reminder that the H800 is not a general graphics card. Its 42.12 GPixel/s is actually lower than the Arc G3's 48.00 GPixel/s, and it has no display outputs. The H800 is a compute device first and foremost. The Arc G3, despite its modest FP32 and FP16 numbers, is a complete graphics solution for its target platform.

There is no benchmark data to separate them in real-world application tests, so the verdict rests on the specification fields. Given the 8.3 times FP32 gap, the 16.7 times FP16 gap, and the massive memory bandwidth difference, the H800 is the clear choice for compute-intensive server workloads. Given the 14 times difference in TDP and the presence of display outputs, the Arc G3 is the clear choice for integrated graphics in portable systems. Neither product can substitute for the other.

FAQ

Q: Which GPU has higher FP32 compute?

A: The NVIDIA H800 PCIe 80 GB, at 51.22 TFLOPS, which is about 8.3 times the 6.144 TFLOPS of the Intel Arc G3.

Q: Does the Intel Arc G3 support display output?

A: Yes, its display outputs are listed as Portable Device Dependent, while the NVIDIA H800 has no outputs.

Q: How much memory does each GPU have?

A: The Intel Arc G3 uses System Shared memory, so its capacity depends on the host system. The NVIDIA H800 has 80 GB of HBM2e on a 5120-bit bus with 2.04 TB/s bandwidth.

Q: What is the power draw difference?

A: The Intel Arc G3 is rated at 25 W, while the NVIDIA H800 is rated at 350 W. The H800 also requires a 1x 16-pin connector and a 750 W suggested PSU, while the Arc G3 uses no power connectors.

Q: Which GPU supports ray tracing?

A: The Intel Arc G3 lists 10 ray tracing cores. The NVIDIA H800 does not list a ray tracing core count in the database.

Q: What process nodes do the two GPUs use?

A: The Intel Arc G3 uses a 3 nm process from Intel. The NVIDIA H800 uses a 5 nm process from TSMC.

Architecture Differences

The Intel Arc G3 is built on the Xe3-LPG architecture, part of the Arc Graphics-M (Panther Lake) generation, using Intel's Panther Lake chip. It is fabricated on Intel's 3 nm process. The NVIDIA H800 uses the Hopper architecture with the GH100 chip, fabricated on TSMC's 5 nm process. The H800 has a listed transistor count of 80,000 million on an 814 mm² die, with a transistor density of 98.3M / mm². The Arc G3 has unknown transistor count and die size fields.

The compute pipelines are structured differently. The Arc G3 has 1280 shading units, 40 TMUs, 20 ROPs, and 10 ray tracing cores. The H800 has 14592 shading units, 456 TMUs, 24 ROPs, and 456 tensor cores, with no ray tracing core count listed. The H800's tensor cores are its defining feature for AI workloads. The Arc G3 has no tensor core field populated.

The memory architecture is fundamentally different. The Arc G3 shares system memory, with its bandwidth listed as System Dependent. The H800 uses 80 GB of HBM2e across a 5120-bit interface, with a fixed 2.04 TB/s bandwidth. The H800's memory clock is 1593 MHz with 3.2 Gbps effective data rate, while the Arc G3's memory clock is listed as System Shared.

The H800 belongs to a named server lineage: its generation is Server Hopper (Hxx), its predecessor is Server Ada, and its successor is Server Blackwell. The Arc G3 has no predecessor or successor entries, and its generation is Arc Graphics-M (Panther Lake). The H800 also uses a 1x 16-pin power connector and requires a 750 W suggested PSU, while the Arc G3 uses no power connectors and has no suggested PSU field.

The API support differs completely. The Arc G3 is fully specified for graphics APIs: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H800 lists null values for all three graphics APIs, consistent with a compute-focused accelerator that does not expose a consumer graphics driver stack.

Specification Differences

The two GPUs differ in every major specification field except for their percentile rank, which is 50 for both, and their average benchmark score, which is 0 for both. No head-to-head benchmarks exist in the database for either product.

Power and physical design: the Arc G3 is an IGP with a 25 W TDP, no power connectors, and no suggested PSU. The H800 is a dual-slot card with a 350 W TDP, a 1x 16-pin connector, and a 750 W suggested PSU. The H800 measures 268 mm in length and 111 mm in height, while the Arc G3 has no dimensions listed. The bus interface is IGP for the Arc G3 and PCIe 5.0 x16 for the H800.

Clocks: the Arc G3 has a 300 MHz base and 2400 MHz boost. The H800 has a 1095 MHz base and 1755 MHz boost. Memory clock for the H800 is 1593 MHz with 3.2 Gbps effective, while the Arc G3's memory clock is System Shared.

Memory: the Arc G3 has System Shared size, type, bus width, and bandwidth. The H800 has 80 GB of HBM2e, a 5120-bit bus, and 2.04 TB/s bandwidth.

Compute units: the Arc G3 has 1280 shading units, 40 TMUs, 20 ROPs, and 10 ray tracing cores. The H800 has 14592 shading units, 456 TMUs, 24 ROPs, and 456 tensor cores.

Throughput: the Arc G3 delivers 48.00 GPixel/s, 96.00 GTexel/s, 6.144 TFLOPS FP32, and 12.29 TFLOPS FP16 (2:1). The H800 delivers 42.12 GPixel/s, 800.3 GTexel/s, 51.22 TFLOPS FP32, and 204.9 TFLOPS FP16 (4:1).

Process and foundry: the Arc G3 uses Intel's 3 nm node and Intel foundry. The H800 uses TSMC's 5 nm node and TSMC foundry. The H800 has 80,000 million transistors on an 814 mm² die; the Arc G3's transistor count and die size are unknown.

Release timing: the Arc G3 has a release date of May 31, 2026. The H800 has a release date of March 20, 2023. Production status for both is Active.

Display outputs: the Arc G3 uses Portable Device Dependent outputs. The H800 has no outputs.

API support: the Arc G3 lists DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The H800 lists null for DirectX, OpenGL, and Vulkan.

The database records no launch MSRP for either product.