Intel Arc B580 vs Intel Arc Graphics 4 Xe Mobile Comparison

Intel Arc B580 is a discrete desktop GPU built on the Xe2-HPG architecture, while Intel Arc Graphics 4 Xe Mobile is an integrated processor graphics solution based on the newer Xe3-LPG architecture. The two represent fundamentally different market segments, with the B580 operating as a full-size dual-slot add-in card and the mobile part functioning as an IGP within a processor package. The recorded data shows no direct head-to-head benchmark comparisons between the two, as the mobile part has an empty benchmark array and an average score of zero. The B580, by contrast, has a substantial set of recorded performance metrics across multiple test suites, placing it at the 68th percentile of all GPUs tracked in the database.

Head-to-Head Benchmarks

The database contains no direct benchmark comparisons between the Intel Arc B580 and the Intel Arc Graphics 4 Xe Mobile. The head-to-head benchmark list is empty, and the wins counter shows zero for both parts. This is expected given the architectural and market positioning: the B580 is a discrete desktop card with a 190 W TDP, while the mobile IGP operates at 25 W and shares system memory. Direct comparison would require identical test conditions, which the database does not provide for these two products.

The Intel Arc B580 has a complete set of recorded benchmarks, with an average benchmark score of 23,021 across ten tests. Its nearest rivals in the database include the AMD Radeon RX 580 2048SP with an average score of 23,061 (a delta of -0.2 percent relative to the B580), the NVIDIA GeForce RTX 2080 at 22,895 (a delta of 0.6 percent), the NVIDIA GeForce RTX 3080 at 23,172 (a delta of -0.7 percent), and the NVIDIA P106-100 at 23,249 (a delta of -1 percent). These deltas are all within roughly one percentage point, indicating that the B580's average performance sits in a tight competitive band around these older and mid-range discrete GPUs.

The B580's individual benchmark scores show notable variation across different test types. In 3DMark Steel Nomad DX12, it records a score of 3,068. In Geekbench OpenCL, the score is 92,821, and in Geekbench Vulkan it reaches 109,672. PassMark results include a G3D score of 15,748 and a GPU compute score of 7,729, alongside lower scores in legacy DirectX tests: 76 in DirectX 10, 128 in DirectX 11, 76 in DirectX 12, and 183 in DirectX 9. The G2D score is 709. The mobile part has no comparable recorded data, so no numerical performance comparison can be made between the two.

Where Each One Wins

The Intel Arc B580 wins decisively in every measurable performance category, simply because it has recorded benchmarks and the Intel Arc Graphics 4 Xe Mobile does not. The B580's shading unit count of 2,560 versus 512 for the mobile part, along with 160 texture mapping units against 32, and 80 render output units against 16, indicates a hardware throughput advantage that directly translates to higher pixel and texture rates. The B580's pixel rate is 213.6 GPixel/s and its texture rate is 427.2 GTexel/s, while the mobile part records 36.80 GPixel/s and 73.60 GTexel/s respectively. These are the only directly comparable numerical specifications between the two parts.

The B580 also wins on memory configuration, with 12 GB of dedicated GDDR6 memory on a 192-bit bus delivering 456.0 GB/s of bandwidth. The mobile part uses system shared memory with bandwidth described as system dependent, which means its effective memory performance is not fixed and depends entirely on the host platform's memory subsystem. This gives the B580 a clear advantage in memory-intensive workloads, though the mobile part's shared memory model is typical for integrated graphics and does not carry the cost or power overhead of dedicated VRAM.

The mobile part does win in efficiency and form factor. Its 25 W TDP is dramatically lower than the B580's 190 W, and it requires no power connectors, no separate slot, and no suggested PSU rating. It is an IGP, meaning it is built into the processor and requires no additional hardware installation. The B580, by contrast, is a dual-slot card measuring 272 mm in length, 115 mm in height, and 45 mm in width, requiring a 1x 8-pin power connector and a 450 W suggested power supply. For thin-and-light portable devices, the mobile part is the only feasible option, while the B580 is designed for desktop systems with adequate space and power delivery.

FAQ

Q: What is the average benchmark score for the Intel Arc B580?

A: The Intel Arc B580 has an average benchmark score of 23,021 across ten recorded tests, placing it at the 68th percentile of all GPUs in the database.

Q: Does the Intel Arc Graphics 4 Xe Mobile have any recorded benchmark scores?

A: No. The mobile part has an empty benchmark array, an average score of zero, and no nearest rivals listed in the database.

Q: How does the Intel Arc B580 compare to its closest rivals in average score?

A: The B580's average score of 23,021 is within one percent of all four nearest rivals: the AMD Radeon RX 580 2048SP (23,061, delta -0.2 percent), NVIDIA GeForce RTX 2080 (22,895, delta 0.6 percent), NVIDIA GeForce RTX 3080 (23,172, delta -0.7 percent), and NVIDIA P106-100 (23,249, delta -1 percent).

Q: What is the TDP difference between the two parts?

A: The Intel Arc B580 has a TDP of 190 W, while the Intel Arc Graphics 4 Xe Mobile has a TDP of 25 W.

Q: What memory configurations do the two parts use?

A: The B580 uses 12 GB of GDDR6 memory on a 192-bit bus with 456.0 GB/s bandwidth. The mobile part uses system shared memory with system dependent bandwidth.

Q: Which part has more shading units?

A: The Intel Arc B580 has 2,560 shading units, while the Intel Arc Graphics 4 Xe Mobile has 512 shading units.

Specification Differences

The two parts differ across nearly every specification field. The B580 uses the BMG-G21 chip built on a 5 nm TSMC process with 19,600 million transistors and a die size of 272 mm², while the mobile part uses the Panther Lake chip on a 3 nm Intel process with transistor count and die size listed as unknown. The B580 has a transistor density of 72.1M per mm², the mobile part has no density figure. Clock speeds differ substantially: the B580 runs at 2670 MHz base and boost, while the mobile part runs at 300 MHz base and 2300 MHz boost. Memory clocks are 2375 MHz (19 Gbps effective) for the B580 versus system shared for the mobile part.

Shading units, texture mapping units, and render output units all differ by a factor of five: 2560 versus 512 shading units, 160 versus 32 TMUs, and 80 versus 16 ROPs. Ray tracing cores count 20 for the B580 versus 4 for the mobile part. Pixel rate is 213.6 GPixel/s versus 36.80 GPixel/s, texture rate is 427.2 GTexel/s versus 73.60 GTexel/s, FP32 compute is 13.67 TFLOPS versus 2.355 TFLOPS, and FP16 compute is 27.34 TFLOPS versus 4.710 TFLOPS, both at a 2:1 ratio.

The B580 has a 190 W TDP, dual-slot width, a 1x 8-pin power connector, and a suggested PSU of 450 W, while the mobile part has a 25 W TDP, IGP slot width, no power connectors, and no suggested PSU. The B580 uses a PCIe 4.0 x8 bus interface, the mobile part uses IGP. Display outputs for the B580 are 1x HDMI 2.1a and 3x DisplayPort 2.1, while the mobile part's outputs are listed as portable device dependent. Dimensions exist only for the B580: 272 mm length, 115 mm height, 45 mm width. Both parts share the same API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Architecture Differences

The architectural split is substantial. The Intel Arc B580 belongs to the Battlemage generation under the Arc 5 series, built on the Xe2-HPG architecture and fabricated by TSMC on a 5 nm process. The Intel Arc Graphics 4 Xe Mobile belongs to the Arc Graphics-M generation under the Panther Lake platform, built on the Xe3-LPG architecture and fabricated by Intel on a 3 nm process. The B580 has a predecessor in Alchemist, while the mobile part has no predecessor listed. Both parts are currently in active production.

The B580's architecture supports a full suite of modern graphics features with 20 ray tracing cores and a dedicated memory subsystem with 456.0 GB/s bandwidth. The mobile part also supports ray tracing with 4 cores, but relies entirely on system shared memory, meaning its bandwidth and capacity are not fixed properties of the GPU itself. The B580's 19,600 million transistors on a 272 mm² die give it a transistor density of 72.1M per mm², a figure that reflects the dedicated hardware for a discrete implementation. The mobile part's transistor count and die size are unknown, making density comparison impossible.

The B580 is released on 2024-12-12 with a launch MSRP of 249 USD, while the mobile part has a release date of 2026-01-26 and no launch MSRP. The B580's compute capabilities, at 13.67 TFLOPS FP32 and 27.34 TFLOPS FP16, are roughly 5.8 times higher than the mobile part's 2.355 TFLOPS FP32 and 4.710 TFLOPS FP16. This ratio aligns with the shading unit count difference of 5 to 1, indicating that the architectural efficiency per shading unit is similar, but the sheer hardware scale of the B580 dominates. The mobile part's 3 nm process and newer Xe3-LPG architecture may offer better efficiency per transistor, but without transistor data, only the power envelope difference is clear: 190 W versus 25 W, an 8.6 times difference that is far smaller than the compute ratio, suggesting the mobile part is considerably more power-efficient despite its lower absolute performance.