Intel Arc G3 vs Intel Arc Graphics 128EU Mobile Comparison

The Verdict

The recorded data presents two Intel integrated graphics solutions aimed at portable devices, yet they are separated by architecture, process technology, and execution resources. The Intel Arc G3, built on the Panther Lake chip with a 3 nm process, delivers a higher FP32 throughput of 6.144 TFLOPS against 4.608 TFLOPS for the Intel Arc Graphics 128EU Mobile. This raw compute advantage, combined with a higher boost clock of 2400 MHz versus 2250 MHz, positions the G3 as the stronger option for compute-bound workloads within the same thermal class.

The Intel Arc Graphics 128EU Mobile, however, is not without its own structural advantages. It uses the Meteor Lake chip on a 10 nm process, and its architecture allocates resources differently, resulting in a higher pixel rate of 72.00 GPixel/s compared to 48.00 GPixel/s for the G3, and a texture rate of 144.0 GTexel/s against 96.00 GTexel/s. The data indicates that for fill-rate dependent tasks, the older part wins decisively on paper despite lower shading power.

Both products hold the same percentile rank against all GPUs in the database, at 50, with no average benchmark scores recorded. This means the database currently has no measured performance samples for either unit. The analysis must therefore rest entirely on the architectural and specification differences. Users prioritizing raw shader compute and modern feature support should look to the Arc G3. Users whose workloads depend more on pixel and texture throughput may find the Arc Graphics 128EU Mobile architecture more suitable, though its older DirectX 12 feature level is a limiting factor.

Architecture Differences

The two GPUs come from different chip generations and manufacturing nodes. The Intel Arc G3 uses the Panther Lake chip with a 3 nm process, while the Intel Arc Graphics 128EU Mobile uses the Meteor Lake chip on a 10 nm process. Both are fabricated by Intel, but the node difference implies a significant change in transistor density and power efficiency, even though exact transistor counts and die sizes are not recorded.

The microarchitectures diverge as well. The Arc G3 uses Xe3-LPG, while the Arc Graphics 128EU Mobile uses Xe-LPG. This generational step brings a change in API support: the G3 supports DirectX 12 Ultimate (12_2), whereas the 128EU Mobile is limited to DirectX 12 (12_1). Both support OpenGL 4.6 and Vulkan 1.4, so the main API difference is the DirectX feature level.

Execution resource counts differ in a way that explains the performance split. The Arc G3 has 1280 shading units, 40 texture mapping units, 20 raster operation units, and 10 ray tracing cores. The Arc Graphics 128EU Mobile has 1024 shading units, 64 TMUs, and 32 ROPs, with no ray tracing cores listed. The G3 therefore has 25% more shading units and adds dedicated ray tracing hardware, while the 128EU Mobile has 60% more TMUs and 60% more ROPs.

Memory architecture is identical in concept: both use System Shared memory with a System Shared bus width and System Dependent bandwidth. Neither has dedicated VRAM. The bus interface differs, with the G3 using IGP and the 128EU Mobile using Ring Bus. Power consumption is close but not equal, with the G3 rated at 25 W and the 128EU Mobile at 28 W.

The release timeline is notable. The Arc Graphics 128EU Mobile launched on 2023-12-13, while the Arc G3 is dated 2026-05-31. The G3 represents a newer design generation, which explains its adoption of the 3 nm node and Xe3-LPG architecture. The 128EU Mobile lists its predecessor as HD Graphics-M, while the G3 has no predecessor recorded.

Head-to-Head Benchmarks

The database contains no head-to-head benchmark entries for this pairing, and neither GPU has an average benchmark score. The wins counter shows zero for both sides. This absence of measured data means the comparison must be constructed from the theoretical throughput values provided.

In FP32 compute, the Arc G3 delivers 6.144 TFLOPS, which is 33.3% higher than the 4.608 TFLOPS of the Arc Graphics 128EU Mobile. The FP16 figures follow the same ratio, with 12.29 TFLOPS (2:1) for the G3 and 9.216 TFLOPS (2:1) for the 128EU Mobile. This is the G3's clearest victory and indicates a substantial lead in general-purpose shader work and compute-heavy rendering.

The pixel rate tells the opposite story. The Arc Graphics 128EU Mobile achieves 72.00 GPixel/s, exactly 50% higher than the 48.00 GPixel/s of the Arc G3. The texture rate follows a similar pattern: 144.0 GTexel/s for the 128EU Mobile versus 96.00 GTexel/s for the G3, a 50% advantage. These figures suggest the 128EU Mobile has a wider back end for rasterization throughput, despite having fewer shading units.

Clock speeds are close, with the G3 boosting to 2400 MHz and the 128EU Mobile to 2250 MHz. The G3's 150 MHz boost advantage contributes to its shader throughput lead, but it does not overcome the 128EU Mobile's larger ROP and TMU counts in fill-rate calculations. Base clocks are identical at 300 MHz.

The ray tracing comparison is binary: the G3 has 10 ray tracing cores, while the 128EU Mobile has none recorded. For any workload that uses hardware-accelerated ray tracing, the G3 is the only one of the two with dedicated support. The 128EU Mobile would have to rely on software paths, which are not detailed in the database.

FAQ

Q: Which GPU has higher raw shader compute performance?

A: The Intel Arc G3, with 6.144 TFLOPS FP32 and 12.29 TFLOPS FP16, compared to 4.608 TFLOPS FP32 and 9.216 TFLOPS FP16 for the Intel Arc Graphics 128EU Mobile.

Q: Does the Intel Arc Graphics 128EU Mobile have any performance advantage?

A: Yes, it has a higher pixel rate of 72.00 GPixel/s versus 48.00 GPixel/s for the G3, and a higher texture rate of 144.0 GTexel/s versus 96.00 GTexel/s.

Q: Do both GPUs support hardware ray tracing?

A: No. The Intel Arc G3 includes 10 ray tracing cores. The Intel Arc Graphics 128EU Mobile has no ray tracing cores listed.

Q: What is the difference in DirectX support?

A: The Intel Arc G3 supports DirectX 12 Ultimate (12_2), while the Intel Arc Graphics 128EU Mobile supports DirectX 12 (12_1).

Q: Which GPU uses a more advanced manufacturing process?

A: The Intel Arc G3 uses a 3 nm process, while the Intel Arc Graphics 128EU Mobile uses a 10 nm process. Both are manufactured by Intel.

Q: How do their power requirements compare?

A: The Intel Arc G3 is rated at 25 W, and the Intel Arc Graphics 128EU Mobile is rated at 28 W.

Where Each One Wins

The Intel Arc G3 wins in compute-oriented scenarios. Its 1280 shading units, 10 ray tracing cores, and higher boost clock of 2400 MHz give it a clear edge in FP32 and FP16 workloads. The DirectX 12 Ultimate support also makes it the stronger choice for applications that use the latest DirectX features. The newer 3 nm process suggests better power efficiency per transistor, though the G3's total TDP is 25 W, which is 3 W lower than the 128EU Mobile's 28 W rating.

The Intel Arc Graphics 128EU Mobile wins in fill-rate-limited scenarios. Its 64 TMUs and 32 ROPs produce a pixel rate of 72.00 GPixel/s and a texture rate of 144.0 GTexel/s, both 50% higher than the G3. For older games or applications that do not stress shader units heavily but require high texture and pixel throughput, this architecture could perform better in practice, despite the lower shader count and the lack of ray tracing cores.

The G3's ray tracing cores give it a decisive advantage in any ray-traced workload. The 128EU Mobile has no such hardware recorded. The G3 also carries a later release date of 2026-05-31 versus 2023-12-13, indicating a more recent design.

The 128EU Mobile retains a role in scenarios where its higher fill rate matters more than shader compute. Its Ring Bus interface and 28 W TDP place it in a similar power envelope, so the choice is not about efficiency but about workload profile. The database shows no measured benchmarks, so these conclusions are derived from the theoretical rates alone.

Specification Differences

| Specification | Intel Arc G3 | Intel Arc Graphics 128EU Mobile |

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

| Chip | Panther Lake | Meteor Lake |

| Architecture | Xe3-LPG | Xe-LPG |

| Process Node | 3 nm | 10 nm |

| Shading Units | 1280 | 1024 |

| TMUs | 40 | 64 |

| ROPs | 20 | 32 |

| Ray Tracing Cores | 10 | None |

| Boost Clock | 2400 MHz | 2250 MHz |

| Base Clock | 300 MHz | 300 MHz |

| Pixel Rate | 48.00 GPixel/s | 72.00 GPixel/s |

| Texture Rate | 96.00 GTexel/s | 144.0 GTexel/s |

| FP32 | 6.144 TFLOPS | 4.608 TFLOPS |

| FP16 | 12.29 TFLOPS (2:1) | 9.216 TFLOPS (2:1) |

| TDP | 25 W | 28 W |

| DirectX | 12 Ultimate (12_2) | 12 (12_1) |

| Bus Interface | IGP | Ring Bus |

| Release Date | 2026-05-31 | 2023-12-13 |

The shared traits are also informative. Both use System Shared memory with System Dependent bandwidth, both are IGP-class with portable-device display outputs, both support OpenGL 4.6 and Vulkan 1.4, and both have a 300 MHz base clock. The G3 has no predecessor recorded, while the 128EU Mobile lists HD Graphics-M as its predecessor. Neither product has a successor listed in the database.