Intel Arc Pro B390 vs NVIDIA GeForce RTX 4080 Mobile Comparison

Intel Arc Pro B390 vs NVIDIA GeForce RTX 4080 Mobile

Head-to-Head Benchmarks

The recorded data shows a decisive performance gap between these two mobile graphics processors. The NVIDIA GeForce RTX 4080 Mobile holds an 81st percentile ranking across all GPUs in the database, while the Intel Arc Pro B390 sits at the 50th percentile. This percentile difference directly reflects the benchmark results: the Intel Arc Pro B390 has no recorded benchmark scores in the database, whereas the RTX 4080 Mobile has nine separate entries across multiple test suites.

The RTX 4080 Mobile's average benchmark score of 38,135 places it in a tight competitive cluster. Its nearest rival, the NVIDIA GeForce MX570, scores 38,299, which is a 0.4% delta above the RTX 4080 Mobile. The NVIDIA GeForce RTX 5080 Mobile sits just ahead at 38,349, a 0.6% delta. Looking the other direction, the NVIDIA GeForce RTX 4070 scores 37,648, a 1.3% delta below the RTX 4080 Mobile, and the NVIDIA Tesla P4 scores 37,628, also a 1.3% delta below. These narrow margins indicate that the RTX 4080 Mobile is positioned in a dense performance tier where small score differences separate competitors.

The individual benchmark results for the RTX 4080 Mobile show consistent strength across different APIs. The Geekbench OpenCL score of 159,575 and the Geekbench Vulkan score of 145,807 both demonstrate high compute throughput. In the Passmark suite, the GPU compute score reaches 11,191, while the G3D score is 24,926. The DirectX 9 score of 286 and the DirectX 11 score of 244 show legacy API performance, while the DirectX 10 score is 157 and the DirectX 12 score is 96. The G2D score of 929 rounds out the 2D graphics performance profile.

Since the Intel Arc Pro B390 has zero benchmark entries and an average benchmark score of zero, no direct numeric comparison can be made between the two products in any specific test. The data therefore relies on the architectural and specification differences to project expected behavior, rather than on measured head-to-head results.

The Verdict

The data indicates that the NVIDIA GeForce RTX 4080 Mobile is the higher-performance option by a substantial margin. Its 81st percentile ranking versus the Intel Arc Pro B390's 50th percentile ranking establishes this clearly. The RTX 4080 Mobile's measured scores, particularly the Geekbench OpenCL result of 159,575 and the Passmark G3D result of 24,926, confirm that it delivers strong compute and graphics throughput. The Intel Arc Pro B390, with no recorded benchmarks and a zero average score, cannot be positioned as a performance competitor based on the available data.

The RTX 4080 Mobile also holds advantages in raw specifications that typically translate to higher frame rates and compute performance. It offers 7,424 shading units, 232 texture mapping units, 80 render output units, 58 ray tracing cores, and 232 tensor cores. The Intel Arc Pro B390 provides 1,536 shading units, 48 texture mapping units, 24 render output units, and 12 ray tracing cores, with no tensor cores listed. The RTX 4080 Mobile's FP32 throughput of 24.72 TFLOPS is more than three times the Intel Arc Pro B390's 7.680 TFLOPS. Its texture rate of 386.3 GTexel/s and pixel rate of 133.2 GPixel/s far exceed the Intel part's 120.0 GTexel/s and 60.00 GPixel/s respectively.

For users who require dedicated graphics memory, the RTX 4080 Mobile provides 12 GB of GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth. The Intel Arc Pro B390 relies on system shared memory, with bandwidth listed as system dependent. This architectural difference has practical implications for memory-intensive workloads such as large texture sets or compute buffers.

Where Each One Wins

The NVIDIA GeForce RTX 4080 Mobile wins in every measurable category where data exists. Its benchmark scores cover OpenCL, Vulkan, and multiple DirectX versions, all showing functional performance. The Geekbench OpenCL score of 159,575 indicates strong general-purpose compute capability, while the Vulkan score of 145,807 suggests solid cross-platform graphics performance. The Passmark G3D score of 24,926 points to capable 3D rendering, and the GPU compute score of 11,191 confirms compute-oriented workloads run effectively.

The Intel Arc Pro B390 presents a different use case entirely. Its integrated graphics processor (IGP) form factor, with no dedicated power connectors and an 80 W TDP, positions it for thin and light portable devices where power draw and physical space are constrained. The NVIDIA GeForce RTX 4080 Mobile, also an IGP in terms of slot width, carries a 110 W TDP, which is higher but still within mobile design ranges. The Intel part's 3 nm process node from Intel foundry is more advanced than the RTX 4080 Mobile's 5 nm TSMC process, which could indicate better power efficiency per transistor, though the RTX 4080 Mobile's much larger transistor count of 35,800 million versus the Intel part's unknown count changes the efficiency calculus.

For ray tracing workloads, the RTX 4080 Mobile's 58 ray tracing cores versus the Intel Arc Pro B390's 12 ray tracing cores suggests a significant advantage in this specialized workload. For machine learning and AI inference, the RTX 4080 Mobile's 232 tensor cores provide dedicated acceleration that the Intel part lacks entirely. The Intel Arc Pro B390 does support the same API set, including DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so feature-level compatibility is equivalent even where performance differs.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA GeForce RTX 4080 Mobile has an average benchmark score of 38,135. 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 RTX 4080 Mobile compare to its nearest rivals?

A: The RTX 4080 Mobile's average score of 38,135 is 0.4% below the NVIDIA GeForce MX570 (38,299) and 0.6% below the NVIDIA GeForce RTX 5080 Mobile (38,349). It is 1.3% above both the NVIDIA GeForce RTX 4070 (37,648) and the NVIDIA Tesla P4 (37,628).

Q: What memory configurations do the two GPUs use?

A: The RTX 4080 Mobile uses 12 GB of GDDR6 memory on a 192-bit bus with 432.0 GB/s bandwidth. The Intel Arc Pro B390 uses system shared memory with system dependent bandwidth.

Q: What are the FP32 performance figures?

A: The RTX 4080 Mobile delivers 24.72 TFLOPS of FP32 performance. The Intel Arc Pro B390 delivers 7.680 TFLOPS of FP32 performance.

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.

Q: What is the process node for each chip?

A: The Intel Arc Pro B390 uses a 3 nm process from Intel foundry. The RTX 4080 Mobile uses a 5 nm process from TSMC.

Architecture Differences

The two GPUs come from fundamentally different architectural lineages. The Intel Arc Pro B390 uses the Xe3-LPG architecture on the Panther Lake chip, belonging to the Arc Graphics-WM (Panther Lake) generation. This is an integrated graphics solution with a 3 nm process node fabricated by Intel. Its predecessor is HD Graphics-WM, and it was released on January 26, 2026. The RTX 4080 Mobile uses the Ada Lovelace architecture on the AD104 chip, part of the GeForce 40 Mobile generation. It uses a 5 nm process node from TSMC, with 35,800 million transistors on a 294 mm² die, giving a transistor density of 121.8M per mm². Its predecessor is GeForce 30 Mobile, and its successor is GeForce 50 Mobile. The RTX 4080 Mobile was released on January 2, 2023.

The RTX 4080 Mobile includes tensor cores, 232 of them, which the Intel Arc Pro B390 does not list. This indicates a hardware-level difference in AI acceleration capability. The RTX 4080 Mobile also has substantially more ray tracing cores at 58 versus 12 on the Intel part. The shading unit count differs by a factor of nearly five: 7,424 on the RTX 4080 Mobile versus 1,536 on the Intel Arc Pro B390. Texture mapping units are 232 versus 48, and render output units are 80 versus 24.

The FP16 performance also differs in ratio. The RTX 4080 Mobile achieves 24.72 TFLOPS FP16 with a 1:1 ratio to FP32, meaning it does not double-rate FP16. The Intel Arc Pro B390 achieves 15.36 TFLOPS FP16 with a 2:1 ratio, indicating it processes FP16 at twice the rate of FP32. This is a notable architectural difference in compute throughput scaling.

Specification Differences

The clock speeds differ significantly. The Intel Arc Pro B390 has a base clock of 300 MHz and a boost clock of 2500 MHz. The RTX 4080 Mobile has a base clock of 1290 MHz and a boost clock of 1665 MHz. The RTX 4080 Mobile's memory clock is listed as 2250 MHz with 18 Gbps effective speed, while the Intel part's memory clock is system shared.

The power draw differs by 30 W, with the Intel Arc Pro B390 at 80 W TDP and the RTX 4080 Mobile at 110 W TDP. Both use IGP slot width and have no power connectors. The bus interface differs: the Intel part uses IGP, while the RTX 4080 Mobile uses PCIe 4.0 x16. Both have portable device dependent display outputs.

The RTX 4080 Mobile has a 12 GB GDDR6 memory configuration with a 192-bit bus and 432.0 GB/s bandwidth. The Intel Arc Pro B390 uses system shared memory for size, type, and bus width, with bandwidth listed as system dependent. The transistor count is unknown for the Intel part, while the RTX 4080 Mobile has 35,800 million transistors on a 294 mm² die.

The RTX 4080 Mobile includes 232 tensor cores and 58 ray tracing cores. The Intel Arc Pro B390 lists 12 ray tracing cores and no tensor cores. The shading units, texture mapping units, and render output units all favor the RTX 4080 Mobile substantially. The pixel rate of 133.2 GPixel/s and texture rate of 386.3 GTexel/s for the RTX 4080 Mobile compare to 60.00 GPixel/s and 120.0 GTexel/s for the Intel Arc Pro B390. The RTX 4080 Mobile's release date of January 2, 2023 predates the Intel Arc Pro B390's release date of January 26, 2026 by three years.