Intel Arc G3 vs Intel Iris Xe Graphics 80EU Mobile Comparison

The Verdict

The data presents a clear generational split between two Intel integrated graphics solutions. The Intel Arc G3, built on the Panther Lake chip with Xe3-LPG architecture, is positioned as the newer, higher-performance part. The Intel Iris Xe Graphics 80EU Mobile, based on Raptor Lake with Generation 12.2 architecture, is the predecessor in the HD Graphics-M lineup. According to the recorded specifications, the Arc G3 delivers substantially higher raw compute performance, with FP32 throughput of 6.144 TFLOPS versus 1.856 TFLOPS for the Iris Xe. This represents a 3.3x advantage in single-precision floating-point work. The Arc G3 also doubles the shading unit count, moving from 640 to 1280, and boosts the maximum clock speed from 1450 MHz to 2400 MHz. Users requiring the highest available integrated graphics performance from the database should select the Arc G3. Users with systems based on Raptor Lake, where the Iris Xe is the only option, will find a capable part for lighter workloads, but the data confirms the Arc G3 is the superior performer across every measured compute metric.

Architecture Differences

The two GPUs come from different manufacturing processes and architectural generations. The Intel Arc G3 uses a 3 nm process node, fabricated by Intel, while the Intel Iris Xe Graphics 80EU Mobile uses a 10 nm process node, also from Intel. The Arc G3 is based on the Xe3-LPG architecture and belongs to the Arc Graphics-M (Panther Lake) generation. The Iris Xe is based on Generation 12.2 and belongs to the HD Graphics-M (Raptor Lake) generation. The release dates confirm the generational gap: the Iris Xe was released on 2023-01-03, while the Arc G3 followed later with a release date of 2026-05-31.

Core configuration differs significantly. The Arc G3 has 1280 shading units, 40 texture mapping units, and 20 raster output units. The Iris Xe has 640 shading units, also 40 texture mapping units, and also 20 raster output units. The Arc G3 adds 10 ray tracing cores, a feature entirely absent from the Iris Xe specification. Tensor cores are not listed for either part. The Arc G3 has a base clock of 300 MHz and a boost clock of 2400 MHz. The Iris Xe also has a base clock of 300 MHz but a lower boost clock of 1450 MHz.

Memory handling is identical in structure: both use System Shared memory with a System Shared bus width and System Dependent bandwidth. Neither part has dedicated VRAM. The bus interface differs: the Arc G3 uses IGP, while the Iris Xe uses Ring Bus. Both are integrated graphics processors with no slot width and no power connectors. Display outputs are Portable Device Dependent for both.

The API support shows a notable difference. The Arc G3 supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The Iris Xe supports DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.4. The DirectX 12_2 feature level on the Arc G3 enables hardware ray tracing and mesh shaders, consistent with its dedicated ray tracing cores. The Iris Xe lacks these capabilities. Both parts have a TDP of 25 W for the Arc G3 and 15 W for the Iris Xe, indicating the Arc G3 consumes more power but delivers more performance per watt according to the compute figures.

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark results between these two parts. The wins count is 0 for both the Arc G3 and the Iris Xe. However, the specification data allows for a detailed comparison of theoretical performance ceilings.

The most significant difference is in FP32 compute. The Arc G3 delivers 6.144 TFLOPS, which is 3.3x the 1.856 TFLOPS of the Iris Xe. This gap directly reflects the doubling of shading units from 640 to 1280 combined with the higher boost clock of 2400 MHz versus 1450 MHz. In practical terms, this means the Arc G3 can handle more complex shader programs and higher resolution workloads before hitting compute limits.

Pixel rate also favors the Arc G3. The recorded pixel rate is 48.00 GPixel/s for the Arc G3 versus 29.00 GPixel/s for the Iris Xe. This is a 1.66x advantage, driven by the higher clock speed since both parts have 20 ROPs. Texture rate shows a similar pattern: the Arc G3 achieves 96.00 GTexel/s versus 58.00 GTexel/s for the Iris Xe, a 1.66x difference. Both parts have 40 TMUs, so the clock speed is again the differentiator.

Half-precision compute follows the same ratio. The Arc G3 delivers 12.29 TFLOPS (2:1) versus 3.712 TFLOPS (2:1) for the Iris Xe. This is again a 3.3x gap. The ray tracing cores on the Arc G3 provide hardware acceleration for ray-traced workloads, a capability the Iris Xe lacks entirely. The Iris Xe has no listed RT cores, meaning any ray tracing work would fall back to compute shaders, which are significantly slower.

The DirectX feature level difference is important. The Arc G3 supports DirectX 12 Ultimate (12_2), while the Iris Xe is limited to DirectX 12 (12_1). This means games and applications that require DirectX 12_2 features, such as hardware ray tracing or variable rate shading, will only run fully on the Arc G3. The Iris Xe may still run such titles but with reduced feature sets or software fallbacks.

Power consumption scales with performance. The Arc G3 has a TDP of 25 W, while the Iris Xe has a TDP of 15 W. The Arc G3 uses 67% more power but delivers 231% more FP32 compute, indicating a favorable performance-per-watt ratio for the newer architecture. This is consistent with the 3 nm process node versus the 10 nm node, which allows for higher clock speeds at lower voltage.

FAQ

Q: Which GPU has more shading units?

A: The Intel Arc G3 has 1280 shading units, exactly double the 640 shading units of the Intel Iris Xe Graphics 80EU Mobile.

Q: Does the Intel Iris Xe support ray tracing?

A: No. The Iris Xe has no ray tracing cores listed in the database. The Intel Arc G3 has 10 dedicated ray tracing cores.

Q: What is the DirectX version difference?

A: The Arc G3 supports DirectX 12 Ultimate (12_2), while the Iris Xe supports DirectX 12 (12_1). The 12_2 feature level enables hardware ray tracing and mesh shaders.

Q: Which GPU has a higher boost clock?

A: The Arc G3 has a boost clock of 2400 MHz. The Iris Xe has a boost clock of 1450 MHz. Both have a base clock of 300 MHz.

Q: How much faster is the Arc G3 in FP32 compute?

A: The Arc G3 delivers 6.144 TFLOPS, which is 3.3x the 1.856 TFLOPS of the Iris Xe.

Q: Are both GPUs integrated or discrete?

A: Both are integrated graphics processors (IGP). Neither has a slot width or power connectors, and both use System Shared memory.

Where Each One Wins

The Intel Arc G3 wins in every category where the database provides comparative data. Its advantages are most pronounced in compute-heavy workloads. The 3.3x FP32 advantage means the Arc G3 is better suited for tasks like 3D rendering, video encoding, and machine learning inference that rely on shader throughput. The 12.29 TFLOPS FP16 figure also makes the Arc G3 the stronger choice for mixed-precision workloads common in AI acceleration.

The Arc G3 also wins in graphics output rates. The 48.00 GPixel/s pixel rate and 96.00 GTexel/s texture rate are both 1.66x higher than the Iris Xe figures. This translates to better performance in games that are fill-rate limited, such as those running at high resolutions with heavy post-processing effects. The higher boost clock of 2400 MHz allows the Arc G3 to sustain these rates more effectively under sustained load.

The ray tracing cores on the Arc G3 open up a workload category that is entirely unavailable on the Iris Xe. Games with ray-traced shadows, reflections, or global illumination will run on the Arc G3 with hardware acceleration. The Iris Xe would need to emulate these effects through compute shaders, which is substantially slower. The DirectX 12 Ultimate support on the Arc G3 further cements this advantage for future titles that mandate 12_2 features.

The Intel Iris Xe Graphics 80EU Mobile wins in power efficiency. Its TDP of 15 W versus 25 W for the Arc G3 means it draws less power, which is important for thin-and-light laptops where battery life is a priority. The Iris Xe also has a lower boost clock of 1450 MHz, which reduces heat generation and may allow for quieter cooling solutions. For users with Raptor Lake systems, the Iris Xe is the only integrated option, and its 1.856 TFLOPS FP32 performance is adequate for office productivity, 4K video playback, and light gaming.

The production status of both parts is Active, and neither has a listed launch MSRP. The Arc G3 is the successor generation, while the Iris Xe has its successor listed as Arc Graphics-M, which includes the Arc G3. The Arc G3 remains the definitive choice for users prioritizing graphics performance in an integrated form factor. The Iris Xe remains a functional option for users constrained by the 15 W power envelope or those on the Raptor Lake platform. The data shows no scenario where the Iris Xe outperforms the Arc G3 in raw throughput, but the lower power draw gives it a niche in ultra-portable designs.