Intel Arc Pro B390 vs NVIDIA GeForce RTX 4090 Mobile Comparison

The Verdict

The data presents a decisive outcome. The NVIDIA GeForce RTX 4090 Mobile is the overwhelmingly faster part, with the Intel Arc Pro B390 holding no benchmark victories in the recorded database. The RTX 4090 Mobile posts an average benchmark score of 43667 and sits at the 84th percentile of all GPUs, while the Arc Pro B390 has an average score of 0 and sits at the 50th percentile. The RTX 4090 Mobile also has substantial recorded benchmark results across nine tests, whereas the Arc Pro B390 has none. For any workload requiring raw compute, rendering, or compute API performance, the NVIDIA part is the only choice supported by the data. The Intel part, with its integrated design and 80 W TDP, is positioned as a low-power embedded graphics solution, but the recorded benchmarks show it has no measurable performance footprint.

Architecture Differences

The two GPUs come from different manufacturers, foundries, and process nodes. Intel builds the Arc Pro B390 on a 3 nm process at Intel, using the Xe3-LPG architecture and the Panther Lake chip. NVIDIA builds the RTX 4090 Mobile on a 5 nm process at TSMC, using the Ada Lovelace architecture and the AD103 chip. The Intel part belongs to the Arc Graphics-WM (Panther Lake) generation, while the NVIDIA part belongs to the GeForce 40 Mobile generation.

The RTX 4090 Mobile uses a discrete GPU design with a PCIe 4.0 x16 bus interface, while the Arc Pro B390 is an integrated graphics processor with an IGP bus interface. The RTX 4090 Mobile has 45,900 million transistors on a 379 mm² die, giving a transistor density of 121.1M per mm². The Intel part has unknown transistor count, die size, and density in the database.

Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical. Both use no power connectors and have portable device dependent display outputs. The Intel part has no dedicated memory, instead using system shared memory. NVIDIA equips the RTX 4090 Mobile with 16 GB of GDDR6 memory on a 256 bit bus.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA GeForce RTX 4090 Mobile has an average benchmark score of 43667. The Intel Arc Pro B390 has an average benchmark score of 0.

Q: How does the RTX 4090 Mobile compare to its nearest rivals?

A: The RTX 4090 Mobile scores 0.8% higher than the NVIDIA Quadro M6000, 0.9% higher than the NVIDIA GeForce RTX 5050 Mobile, 0.9% higher than the NVIDIA Quadro M6000 24 GB, and 0.9% lower than the NVIDIA RTX A6000.

Q: What is the transistor count of each GPU?

A: The RTX 4090 Mobile has 45,900 million transistors. The Arc Pro B390 has an unknown transistor count in the database.

Q: Do the two GPUs support the same graphics APIs?

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

Q: What memory configuration does each GPU use?

A: The Arc Pro B390 uses system shared memory with system dependent bandwidth. The RTX 4090 Mobile has 16 GB of GDDR6 memory with a 256 bit bus and 576.0 GB/s bandwidth.

Q: What are the TDP figures for these GPUs?

A: The Arc Pro B390 has a TDP of 80 W. The RTX 4090 Mobile has a TDP of 120 W.

Specification Differences

The two GPUs differ across nearly every measurable specification. The Intel Arc Pro B390 uses a 3 nm process at Intel with the Xe3-LPG architecture and Panther Lake chip. The NVIDIA RTX 4090 Mobile uses a 5 nm process at TSMC with the Ada Lovelace architecture and AD103 chip.

Clock speeds differ substantially. The Intel part has a base clock of 300 MHz and a boost clock of 2500 MHz. The NVIDIA part has a base clock of 1335 MHz and a boost clock of 1695 MHz. The Intel part has no dedicated memory clock, using system shared memory, while the RTX 4090 Mobile runs memory at 2250 MHz with 18 Gbps effective speed.

Memory specifications are completely different. The Arc Pro B390 has system shared memory, type, bus width, and system dependent bandwidth. The RTX 4090 Mobile has 16 GB of GDDR6 memory, a 256 bit bus, and 576.0 GB/s bandwidth.

Compute resources favor NVIDIA heavily. The RTX 4090 Mobile has 9728 shading units, 304 TMUs, 112 ROPs, 76 RT cores, and 304 tensor cores. The Arc Pro B390 has 1536 shading units, 48 TMUs, 24 ROPs, and 12 RT cores, with no tensor core count listed.

Output rates and compute throughput differ by large margins. The Intel part delivers 60.00 GPixel/s pixel rate, 120.0 GTexel/s texture rate, 7.680 TFLOPS FP32, and 15.36 TFLOPS FP16. The RTX 4090 Mobile delivers 189.8 GPixel/s, 515.3 GTexel/s, 32.98 TFLOPS FP32, and 32.98 TFLOPS FP16.

The bus interface differs: the Intel part is IGP, while the NVIDIA part is PCIe 4.0 x16. TDP also differs: 80 W for Intel versus 120 W for NVIDIA. The RTX 4090 Mobile has 45,900 million transistors and a 379 mm² die size, while the Intel part has unknown values. The NVIDIA part has a transistor density of 121.1M per mm². Release dates differ, with the RTX 4090 Mobile releasing earlier and the Arc Pro B390 releasing later. The RTX 4090 Mobile has a known successor, the GeForce 50 Mobile, while the Arc Pro B390 has no listed successor.

Head-to-Head Benchmarks

The database records no head-to-head benchmark entries between these two GPUs. However, the RTX 4090 Mobile has nine individual benchmark results, while the Arc Pro B390 has none. This absence of any recorded scores for the Intel part means the RTX 4090 Mobile wins all comparable categories by default.

In the RTX 4090 Mobile's own benchmark results, the strongest scores come from Geekbench compute tests. The Geekbench OpenCL score is 180831, and the Geekbench Vulkan score is 170774. These are the two highest recorded results for the NVIDIA part, indicating strong general compute and cross-platform graphics API performance.

PassMark results show a mixed pattern across different DirectX versions. The DirectX 9 score is 310, the DirectX 11 score is 262, and the DirectX 10 score is 173. The DirectX 12 score is the lowest at 107. The PassMark G3D score is 27212, while the PassMark GPU compute score is 12347. The PassMark G2D score is 984.

The RTX 4090 Mobile's average benchmark score of 43667 places it 0.8% above the NVIDIA Quadro M6000, 0.9% above the NVIDIA GeForce RTX 5050 Mobile, and 0.9% above the NVIDIA Quadro M6000 24 GB. It sits 0.9% below the NVIDIA RTX A6000. The percentile ranking of 84 indicates the RTX 4090 Mobile outperforms most GPUs in the database.

Where Each One Wins

The RTX 4090 Mobile wins in every recorded category. Its 32.98 TFLOPS FP32 throughput is more than four times the Intel part's 7.680 TFLOPS. Its 32.98 TFLOPS FP16 matches its FP32 output, while the Intel part reaches only 15.36 TFLOPS FP16. The RTX 4090 Mobile's texture rate of 515.3 GTexel/s is over four times the Intel part's 120.0 GTexel/s, and its pixel rate of 189.8 GPixel/s is over three times the Intel part's 60.00 GPixel/s.

Memory bandwidth heavily favors NVIDIA. The RTX 4090 Mobile's 576.0 GB/s bandwidth compared to the Intel part's system dependent shared memory gives the discrete GPU a large advantage in memory-bound workloads. The 16 GB GDDR6 allocation with a 256 bit bus versus system shared memory also favors NVIDIA for large datasets.

The RTX 4090 Mobile has 76 RT cores versus 12 on the Intel part, and 304 tensor cores versus none listed on the Intel part. These resources indicate a strong advantage in ray tracing and AI-accelerated workloads. The RTX 4090 Mobile also has 9728 shading units versus 1536, 304 TMUs versus 48, and 112 ROPs versus 24.

The Arc Pro B390's advantages are limited to power consumption and integration. Its 80 W TDP is lower than the RTX 4090 Mobile's 120 W TDP, and its IGP bus interface means no separate graphics card slot is needed. The Intel part's 3 nm process node is smaller than NVIDIA's 5 nm node, but this has not translated into any recorded performance benefit.

For laptop and portable device integration, the Intel part uses system shared memory and has no power connectors, matching the RTX 4090 Mobile's no-connector design. Both are IGP slot width, meaning neither occupies an expansion slot. The RTX 4090 Mobile's PCIe 4.0 x16 interface, however, provides a dedicated high-bandwidth connection to the host, while the Intel part relies on the system's integrated memory path.

The release timeline shows the RTX 4090 Mobile launched earlier, with the Arc Pro B390 arriving later. The RTX 4090 Mobile has a predecessor, the GeForce 30 Mobile, and a successor, the GeForce 50 Mobile. The Intel part lists HD Graphics-WM as its predecessor and no successor.

The data supports only one conclusion for users seeking performance: the RTX 4090 Mobile delivers all measurable wins. The Arc Pro B390 offers a lower power envelope and integrated simplicity, but with zero recorded benchmark scores, its performance cannot be validated against the NVIDIA part.