AMD Radeon 860M vs Intel Arc Pro B390 Comparison

Head-to-Head Benchmarks

The recorded data contains no direct head-to-head benchmark runs between the AMD Radeon 860M and the Intel Arc Pro B390. The database lists no shared test results for these two integrated parts, which prevents a direct score comparison across identical workloads. The AMD Radeon 860M has two recorded benchmark entries: a Geekbench OpenCL score of 22759 and a Geekbench Vulkan score of 30043. The Intel Arc Pro B390 has no recorded benchmark scores in the database at this time, with an average benchmark score of 0. This absence of measurements for the Intel part means any numerical comparison between the two is limited to their individual entries rather than matched testing.

The AMD Radeon 860M posts an average benchmark score of 26401 across its recorded tests. Its nearest rival in the database, the NVIDIA GeForce MX550, holds an average score of 26421, which places the AMD part 0.1% behind that discrete mobile GPU. The AMD Radeon 860M sits 0.3% ahead of the NVIDIA GeForce RTX 5060, which records an average score of 26331. The AMD Radeon RX 5700 XT 50th Anniversary averages 26553, putting the 860M 0.6% behind it. The NVIDIA RTX A4000 averages 26683, and the 860M trails by 1.1%. These delta percentages show the AMD integrated GPU clustering tightly with a set of discrete graphics cards, within roughly one percent in either direction. The Intel Arc Pro B390 has no rival entries in the database, so no analogous positioning data exists for comparison.

The percentile figures further separate the two parts. The AMD Radeon 860M sits at the 72nd percentile among all GPUs in the database, meaning it outperforms a substantial majority of recorded graphics processors. The Intel Arc Pro B390 sits at the 50th percentile, the median position, though this rank is assigned without any benchmark scores attached to it. The contrast in database coverage is notable: one part has measured results and rival comparisons, the other has neither. The data indicates that any performance conclusions about the Intel Arc Pro B390 must remain provisional until benchmark entries populate its record.

Where Each One Wins

The AMD Radeon 860M wins in every measurable category simply because the database contains measurements for it and none for the Intel Arc Pro B390. Its 30043 Vulkan score exceeds its 22759 OpenCL score, indicating stronger performance under the Vulkan API in the recorded data. The 860M's average benchmark score of 26401 places it near several discrete GPUs, with the closest competitor being the NVIDIA GeForce MX550 at 0.1% higher. The wins against the RTX 5060, RX 5700 XT 50th Anniversary, and RTX A4000 are all narrow, between 0.3% and 1.1%, which suggests the 860M operates in a competitive band rather than dominating any single rival.

For the Intel Arc Pro B390, there are no wins to document from the recorded data. The database shows no benchmark scores, no average score, and no rival comparisons. The part's capacity for compute work appears only through its theoretical specifications, such as 7.680 TFLOPS of FP32 throughput and 15.36 TFLOPS of FP16 throughput, but these figures have no measured counterpart in the database. The AMD part, by contrast, delivers 3.072 TFLOPS FP32 and 3.072 TFLOPS FP16 at a 1:1 ratio, while the Intel part offers a 2:1 FP16 ratio. Without benchmark results, the Intel part cannot be credited with any workload-specific wins.

The use-case split therefore falls entirely to the AMD side in the recorded data. The 860M's Vulkan score of 30043 suggests particular strength in Vulkan-based workloads, while its OpenCL score of 22759 indicates more moderate showing in OpenCL compute tasks. Both scores contribute to its 72nd percentile ranking among all GPUs. The Intel Arc Pro B390's 50th percentile rank, without supporting scores, provides no basis for assigning it wins in any workload category.

Architecture Differences

The two integrated GPUs come from different manufacturers and use distinct microarchitectures. The AMD Radeon 860M uses the RDNA 3.5 architecture on the Krackan Point chip, part of the Navi III IGP generation for Strix Point Mobile. The Intel Arc Pro B390 uses the Xe3-LPG architecture on the Panther Lake chip, belonging to the Arc Graphics-WM generation. These architectural choices drive several structural differences in the compute pipeline.

The Intel part carries substantially more shading units, 1536 versus the AMD part's 512, a 3x difference in raw shader count. Texture mapping units also favor Intel, 48 versus 32, and the Intel part has more render output units, 24 versus 16. Ray tracing cores follow the same pattern: the Intel Arc Pro B390 includes 12 RT cores while the AMD Radeon 860M includes 8. These unit counts align with the theoretical throughput figures, where the Intel part produces 7.680 TFLOPS FP32 versus 3.072 TFLOPS for the AMD part, and 120.0 GTexel/s versus 96.00 GTexel/s in texture rate. The pixel rates differ less dramatically, 60.00 GPixel/s for Intel versus 48.00 GPixel/s for AMD, reflecting the less extreme gap in ROP counts.

The FP16 processing differs in method. AMD implements FP16 at a 1:1 ratio with FP32, meaning both formats deliver 3.072 TFLOPS. Intel implements FP16 at a 2:1 ratio, delivering 15.36 TFLOPS, which is double its FP32 rate. This indicates the Intel architecture can process half-precision data at twice the rate of single-precision, while the AMD architecture treats both at the same throughput.

Process technology also separates the two. AMD fabricates the 860M on a 4 nm process at TSMC. Intel fabricates the Arc Pro B390 on a 3 nm process at its own foundry. Neither part discloses transistor counts or die sizes in the database. Both parts share the same API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both are classified as integrated GPUs with no power connectors and portable-device-dependent display outputs.

Specification Differences

The clock speeds differ considerably. The AMD Radeon 860M runs at a base clock of 600 MHz and boosts to 3000 MHz. The Intel Arc Pro B390 runs at a base clock of 300 MHz and boosts to 2500 MHz. The AMD part therefore has a higher base clock by 300 MHz and a higher boost clock by 500 MHz, despite the Intel part's higher shader count and theoretical throughput. The AMD part also has the higher pixel rate and texture rate in relative terms per clock, though the Intel part wins in absolute rates due to its larger execution resources.

Power draw presents a major differentiator. The AMD Radeon 860M carries a 15 W TDP. The Intel Arc Pro B390 carries an 80 W TDP, more than five times the AMD figure. Both are listed as integrated GPUs with no power connectors, and the bus interface for the AMD part is PCIe 4.0 x8, while the Intel part lists "IGP" as its bus interface. Both use system-shared memory with system-dependent bandwidth, so no dedicated memory capacity, type, or bus width separates them.

The release dates differ by nearly a year. The AMD Radeon 860M entered production with a release date of 2025-02-28. The Intel Arc Pro B390 has a release date of 2026-01-26. The predecessor entries also differ: the AMD part lists Navi II IGP as its predecessor, while the Intel part lists HD Graphics-WM. Neither part has a successor listed, and neither has a launch MSRP recorded in the database. Both are marked as Active in production status.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The AMD Radeon 860M has an average benchmark score of 26401, based on two recorded tests. The Intel Arc Pro B390 has an average benchmark score of 0, as no benchmark results are recorded for it in the database.

Q: How does the AMD Radeon 860M compare to its nearest rivals?

A: The 860M trails the NVIDIA GeForce MX550 by 0.1% (26421), leads the NVIDIA GeForce RTX 5060 by 0.3% (26331), trails the AMD Radeon RX 5700 XT 50th Anniversary by 0.6% (26553), and trails the NVIDIA RTX A4000 by 1.1% (26683).

Q: What are the clock speed differences between the two parts?

A: The AMD Radeon 860M has a base clock of 600 MHz and a boost clock of 3000 MHz. The Intel Arc Pro B390 has a base clock of 300 MHz and a boost clock of 2500 MHz.

Q: Which GPU has more shading units and ray tracing cores?

A: The Intel Arc Pro B390 has 1536 shading units and 12 ray tracing cores. The AMD Radeon 860M has 512 shading units and 8 ray tracing cores.

Q: What is the TDP for each integrated GPU?

A: The AMD Radeon 860M has a TDP of 15 W. The Intel Arc Pro B390 has a TDP of 80 W.

Q: Do both GPUs support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.