Intel Arc B580 vs Intel Arc Pro B390 Comparison
Intel Arc B580
Arc Pro B390
PERFORMANCE BENCHMARKS
Analysis: Intel Arc B580 vs Intel Arc Pro B390
The Verdict
The Intel Arc B580 is a discrete desktop graphics card built for standalone rendering, gaming, and compute workloads. The Intel Arc Pro B390 is an integrated graphics processor embedded in a Panther Lake mobile or compact platform, designed for portability and low power consumption. The data indicates they serve entirely different market segments.
The Arc B580 is the clear choice for users who need a dedicated GPU with substantial memory bandwidth, high shader throughput, and a full complement of display outputs. It delivers 13.67 TFLOPS of FP32 compute and 456.0 GB/s of memory bandwidth. The Arc Pro B390, with 7.680 TFLOPS of FP32 compute and system-shared memory, is for users who require graphics capability without a separate expansion card, at a much lower power envelope of 80 W.
The benchmark data shows the Arc B580 in the 68th percentile of all GPUs, while the Arc Pro B390 sits at the 50th percentile. The Arc B580 has an average benchmark score of 23021 across ten recorded tests. The Arc Pro B390 has no recorded benchmark entries in the database, so direct score comparisons are not possible.
Users who prioritize graphics performance, dedicated VRAM, and upgradeability should select the Arc B580. Users who need an integrated solution with zero power connectors, no slot width, and system-shared memory should select the Arc Pro B390.
Architecture Differences
The two processors are built on fundamentally different architectures. The Arc B580 uses the Xe2-HPG architecture with the BMG-G21 chip, fabricated on a 5 nm process by TSMC. It belongs to the Battlemage (Arc 5) generation. The Arc Pro B390 uses the Xe3-LPG architecture with the Panther Lake chip, fabricated on a 3 nm process by Intel, and belongs to the Arc Graphics-WM (Panther Lake) generation.
The Arc B580 packs 19,600 million transistors onto a 272 mm² die, yielding a transistor density of 72.1 million transistors per square millimeter. The Arc Pro B390 has unknown transistor count and die size, but the 3 nm process node indicates a more advanced manufacturing technology.
Architectural capabilities differ in several key areas. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both have ray tracing cores: 20 on the Arc B580 and 12 on the Arc Pro B390. Neither has dedicated tensor cores listed in the database.
The Arc B580 operates at a base clock of 2670 MHz and a boost clock of 2670 MHz, with memory clocked at 2375 MHz for 19 Gbps effective. The Arc Pro B390 has a base clock of 300 MHz and a boost clock of 2500 MHz. Its memory is system shared, with bandwidth described as system dependent.
The production status of both processors is listed as active. The Arc B580 released on 2024-12-12 and succeeds the Alchemist generation. The Arc Pro B390 released on 2026-01-26 and succeeds HD Graphics-WM. The Arc B580 has a launch MSRP of 249 USD.
FAQ
Q: Which GPU has more shading units?
A: The Intel Arc B580 has 2560 shading units, while the Intel Arc Pro B390 has 1536 shading units. This is a difference of 1024 shading units in favor of the Arc B580.
Q: What type of memory does each GPU use?
A: The Arc B580 uses 12 GB of GDDR6 memory on a 192-bit bus with 456.0 GB/s bandwidth. The Arc Pro B390 uses system shared memory with a system dependent bus width and bandwidth.
Q: How do their power requirements differ?
A: The Arc B580 has a TDP of 190 W, requires a dual-slot cooler, uses one 8-pin power connector, and suggests a 450 W power supply. The Arc Pro B390 has a TDP of 80 W, is an IGP (integrated graphics processor), requires no power connectors, and has no suggested power supply.
Q: Which GPU supports newer display outputs?
A: The Arc B580 offers 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs. The Arc Pro B390's display outputs are portable device dependent, meaning they vary by the host device.
Q: What is the performance percentile of each GPU?
A: The Arc B580 ranks in the 68th percentile of all GPUs, while the Arc Pro B390 ranks in the 50th percentile of all GPUs.
Q: Do both GPUs support ray tracing?
A: Yes, both support ray tracing. The Arc B580 has 20 ray tracing cores, and the Arc Pro B390 has 12 ray tracing cores.
Specification Differences
The recorded data shows substantial differences across nearly every specification category.
Processor and Architecture: The Arc B580 uses the BMG-G21 chip with Xe2-HPG architecture on a 5 nm TSMC process. The Arc Pro B390 uses the Panther Lake chip with Xe3-LPG architecture on a 3 nm Intel process.
Transistors and Die: The Arc B580 has 19,600 million transistors on a 272 mm² die with 72.1M transistors per mm². The Arc Pro B390 has unknown transistor count, die size, and transistor density.
Clocks: The Arc B580 runs at 2670 MHz base and boost. The Arc Pro B390 runs at 300 MHz base and 2500 MHz boost. Memory clock for the Arc B580 is 2375 MHz (19 Gbps effective); the Arc Pro B390 uses system shared memory.
Memory: The Arc B580 has 12 GB GDDR6 on a 192-bit bus with 456.0 GB/s bandwidth. The Arc Pro B390 has system shared memory with system dependent bandwidth.
Compute Units: The Arc B580 has 2560 shading units, 160 TMUs, 80 ROPs, and 20 ray tracing cores. The Arc Pro B390 has 1536 shading units, 48 TMUs, 24 ROPs, and 12 ray tracing cores.
Rates: The Arc B580 delivers 213.6 GPixel/s pixel rate, 427.2 GTexel/s texture rate, 13.67 TFLOPS FP32, and 27.34 TFLOPS FP16 (2:1). The Arc Pro B390 delivers 60.00 GPixel/s, 120.0 GTexel/s, 7.680 TFLOPS FP32, and 15.36 TFLOPS FP16 (2:1).
Power and Physical: The Arc B580 has a 190 W TDP, dual-slot width, one 8-pin power connector, and a 450 W suggested PSU. It measures 272 mm by 115 mm by 45 mm. The Arc Pro B390 has an 80 W TDP, IGP slot width, no power connectors, no suggested PSU, and no listed dimensions.
Bus and Outputs: The Arc B580 uses PCIe 4.0 x8 and offers 1x HDMI 2.1a plus 3x DisplayPort 2.1. The Arc Pro B390 uses an IGP bus interface with portable device dependent outputs.
Release and Pricing: The Arc B580 released on 2024-12-12 with a launch MSRP of 249 USD. The Arc Pro B390 released on 2026-01-26 with no launch MSRP recorded.
Head-to-Head Benchmarks
No head-to-head benchmark entries exist in the database for these two processors, and the Arc Pro B390 has no individual benchmark scores recorded. The comparison must therefore rely on the Arc B580's recorded scores and the architectural specifications of both.
The Arc B580 shows a 3DMark Steel Nomad DX12 score of 3068. It records a Geekbench OpenCL score of 92821 and a Geekbench Vulkan score of 109672. Passmark results include a G3D score of 15748, a GPU compute score of 7729, a G2D score of 709, DirectX 9 at 183, DirectX 11 at 128, DirectX 10 at 76, and DirectX 12 at 76.
The Arc Pro B390 has an average benchmark score of 0 with no test entries. Its 50th percentile ranking places it below the Arc B580's 68th percentile, but without recorded scores, the magnitude of the performance gap cannot be quantified from benchmark data alone.
The Arc B580's nearest rivals in the database provide context for its standing. It sits 0.2% behind the AMD Radeon RX 580 2048SP, which has an average score of 23061. It is 0.6% ahead of the NVIDIA GeForce RTX 2080 at 22895. The RTX 3080 at 23172 is 0.7% ahead of the Arc B580, and the NVIDIA P106-100 at 23249 is 1% ahead. These deltas show the Arc B580 performing within a tight 1.7% band among these rivals.
The Arc Pro B390 has no nearest rivals listed, so no such contextual comparison is available.
Where Each One Wins
The Arc B580 wins in every category where direct specifications can be compared. It has more shading units, more texture mapping units, more raster operation units, more ray tracing cores, and significantly higher pixel and texture fill rates. Its FP32 compute of 13.67 TFLOPS is nearly double the Arc Pro B390's 7.680 TFLOPS. Its FP16 output of 27.34 TFLOPS similarly exceeds the Arc Pro B390's 15.36 TFLOPS.
Memory capacity and bandwidth strongly favor the Arc B580. Dedicated 12 GB of GDDR6 with 456.0 GB/s bandwidth provides predictable performance for large textures and compute workloads. The Arc Pro B390 depends on system shared memory, making its bandwidth dependent on the host platform.
The Arc B580 provides a complete set of fixed display outputs: one HDMI 2.1a and three DisplayPort 2.1 connections. The Arc Pro B390's outputs depend on the portable device it is integrated into, which limits its use as a standalone display adapter.
Power efficiency favors the Arc Pro B390. Its 80 W TDP is 110 W lower than the Arc B580's 190 W TDP. It requires no power connectors and no slot space, making it suitable for compact or mobile systems. The Arc B580 requires a dual-slot cooler, a single 8-pin power connector, and a 450 W power supply.
The Arc Pro B390 also wins on manufacturing process. Its 3 nm Intel process node is more advanced than the 5 nm TSMC node used by the Arc B580. This newer process contributes to the Arc Pro B390's lower power draw despite the lower clock speeds.
The Arc B580 is positioned for desktop graphics workloads with dedicated resources and upgrade capability. The Arc Pro B390 is positioned for portable or embedded platforms where power draw, physical space, and integration matter more than raw throughput. The recorded data supports the Arc B580 as the stronger performer and the Arc Pro B390 as the more efficient integrated option.