Intel Arc Pro B390 vs NVIDIA GeForce RTX 4070 Mobile Comparison

The Verdict

The Intel Arc Pro B390 and the NVIDIA GeForce RTX 4070 Mobile occupy different segments within the portable graphics market, and the benchmark data reflects a clear separation in performance capability. The RTX 4070 Mobile delivers substantially higher raw compute and graphics throughput across every recorded metric, placing it in the 73rd percentile of all GPUs in the database. The Arc Pro B390, with a 50th percentile ranking, targets a fundamentally different use case: it is an integrated graphics processor (IGP) designed for compact, power-efficient systems rather than discrete mobile gaming performance.

The RTX 4070 Mobile is the choice for workloads that demand maximum throughput, particularly 3D rendering, compute acceleration, and high-frame-rate gaming. Its recorded benchmark scores, including a PassMark G3D score of 19587 and a Geekbench OpenCL score of 109197, position it alongside discrete desktop-class GPUs such as the AMD Radeon RX 6700 XT, which posts an average score of 27425, and the NVIDIA GeForce RTX 3090 at 27565. The Arc Pro B390, by contrast, has no recorded benchmark scores in the database, meaning its performance profile is defined entirely by its architectural specifications rather than measured results.

For users with an 80 W power envelope and a need for integrated graphics, the Arc Pro B390 uses the Panther Lake chip with Xe3-LPG architecture on Intel's 3 nm process. It delivers 7.680 TFLOPS of FP32 compute and supports DirectX 12 Ultimate, Vulkan 1.4, and OpenGL 4.6. The RTX 4070 Mobile, however, uses the AD106 chip on TSMC's 5 nm process, delivers 15.62 TFLOPS of FP32 compute, and requires 115 W. The data shows that the RTX 4070 Mobile offers roughly double the FP32 throughput, more than double the texture rate (244.1 GTexel/s versus 120.0 GTexel/s), and a higher pixel rate (81.36 GPixel/s versus 60.00 GPixel/s).

Where Each One Wins

The RTX 4070 Mobile wins in every performance category where measured data exists. Its Geekbench Vulkan score of 108367 demonstrates strong graphics API performance, while its PassMark DirectX 11 score of 179 and DirectX 12 score of 85 show compatibility across legacy and modern rendering paths. The GPU compute score of 8399 in PassMark indicates substantial general-purpose compute capability, supported by 144 tensor cores and 36 ray tracing cores.

The Arc Pro B390 wins in terms of power efficiency and integration. At 80 W versus 115 W for the RTX 4070 Mobile, the Intel part draws less power while providing integrated graphics functionality with no separate memory bus. The Arc Pro B390 uses system-shared memory, meaning it requires no dedicated VRAM allocation, which simplifies system design and reduces cost for thin-and-light devices. Its 3 nm process node from Intel also represents a more advanced manufacturing technology than the 5 nm TSMC node used by NVIDIA.

For content creation and gaming, the RTX 4070 Mobile's 8 GB of GDDR6 memory on a 128-bit bus delivers 256.0 GB/s of bandwidth. The Arc Pro B390's memory bandwidth is system-dependent, which means its performance scales with the host system's memory configuration. This architectural difference makes the RTX 4070 Mobile more predictable in performance, while the Arc Pro B390's performance varies based on the laptop's memory subsystem.

Architecture Differences

The two GPUs represent fundamentally different design philosophies. The Intel Arc Pro B390 is built on the Panther Lake chip using Xe3-LPG architecture, fabricated on Intel's 3 nm process. It integrates 1536 shading units, 48 texture mapping units, 24 ROPs, and 12 ray tracing cores. The chip operates with a base clock of 300 MHz and a boost clock of 2500 MHz, producing a pixel rate of 60.00 GPixel/s and a texture rate of 120.0 GTexel/s. Its FP32 performance of 7.680 TFLOPS and FP16 performance of 15.36 TFLOPS (2:1 ratio) indicate a design optimized for mixed-precision workloads.

The NVIDIA GeForce RTX 4070 Mobile uses the AD106 chip with Ada Lovelace architecture, fabricated on TSMC's 5 nm process with 22,900 million transistors on a 188 mm² die, yielding a transistor density of 121.8M per mm². It contains 4608 shading units, 144 TMUs, 48 ROPs, 36 ray tracing cores, and 144 tensor cores. Its base clock of 1395 MHz and boost clock of 1695 MHz are significantly higher than the Intel part, reflecting the discrete GPU's higher power budget. The memory operates at 2000 MHz with 16 Gbps effective speed, delivering 256.0 GB/s across an 8 GB GDDR6 interface.

The RTX 4070 Mobile's FP16 performance matches its FP32 at 15.62 TFLOPS (1:1 ratio), whereas the Arc Pro B390 uses a 2:1 FP16-to-FP32 ratio. This difference matters for AI and compute workloads: NVIDIA's tensor cores provide dedicated hardware acceleration, while Intel relies on unified shading units. The RTX 4070 Mobile also uses a PCIe 4.0 x8 bus interface, while the Arc Pro B390 is an integrated processor with no separate bus interface, connecting directly to the CPU. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, ensuring modern API compatibility.

FAQ

Q: Which GPU has higher raw compute performance?

A: The NVIDIA GeForce RTX 4070 Mobile delivers 15.62 TFLOPS of FP32 compute, more than double the 7.680 TFLOPS of the Intel Arc Pro B390.

Q: How do their memory configurations differ?

A: The RTX 4070 Mobile uses 8 GB of GDDR6 memory on a 128-bit bus with 256.0 GB/s bandwidth. The Arc Pro B390 uses system-shared memory with system-dependent bandwidth, meaning its memory performance depends on the host laptop.

Q: What is the power consumption difference?

A: The Arc Pro B390 has a TDP of 80 W, while the RTX 4070 Mobile has a TDP of 115 W. The Intel part consumes 35 W less power.

Q: Which GPU supports ray tracing?

A: Both GPUs support ray tracing. The RTX 4070 Mobile has 36 RT cores, while the Arc Pro B390 has 12 RT cores. Both support DirectX 12 Ultimate, which includes ray tracing features.

Q: How does the RTX 4070 Mobile compare to desktop GPUs?

A: The database shows the RTX 4070 Mobile's average benchmark score of 27435 is nearly identical to the AMD Radeon RX 6700 XT at 27425 (0% difference) and the NVIDIA GeForce RTX 3090 at 27565 (-0.5% difference). This indicates the mobile part performs close to desktop-class GPUs.

Q: What is the manufacturing process for each chip?

A: The Intel Arc Pro B390 uses a 3 nm process from Intel, while the RTX 4070 Mobile uses a 5 nm process from TSMC. Intel's process node is more advanced, though the NVIDIA chip packs more transistors at 22,900 million versus an unknown count for the Intel part.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the Arc Pro B390 and the RTX 4070 Mobile, and the Intel part has no individual benchmark scores recorded. The RTX 4070 Mobile's performance profile, however, is well-documented across nine separate tests. Its Geekbench OpenCL score of 109197 and Vulkan score of 108367 show near-parity between the two graphics APIs, suggesting consistent performance across different compute interfaces.

In PassMark testing, the RTX 4070 Mobile posts a DirectX 9 score of 223, a DirectX 10 score of 116, a DirectX 11 score of 179, and a DirectX 12 score of 85. The DirectX 9 result stands as the strongest legacy API score, while DirectX 12 shows lower absolute numbers, which is typical for modern GPUs that prioritize newer rendering paths. The G2D score of 763 and G3D score of 19587 indicate the GPU handles both 2D desktop workloads and 3D rendering effectively.

The RTX 4070 Mobile's nearest rivals in the database provide context for its positioning. The AMD Radeon RX 6700 XT matches it exactly with an average score of 27425 and 0% delta. The NVIDIA GeForce RTX 3090 scores 27565, a 0.5% advantage, while the NVIDIA RTX PRO 4000 Blackwell scores 27135, a 1.1% deficit. The AMD Radeon Pro Vega 20 leads slightly at 27839, a 1.5% advantage. These tight margins show the RTX 4070 Mobile performing at the level of high-end desktop GPUs from previous generations.

The Arc Pro B390's lack of benchmark data means direct numerical comparison is impossible. Its architectural specifications, however, provide a baseline: 7.680 TFLOPS of FP32 versus the RTX 4070 Mobile's 15.62 TFLOPS, a 60.00 GPixel/s pixel rate versus 81.36 GPixel/s, and a 120.0 GTexel/s texture rate versus 244.1 GTexel/s. The RTX 4070 Mobile leads in every computed metric, with the largest gap appearing in texture fill rate, where it more than doubles the Intel part.

The RTX 4070 Mobile's 144 tensor cores give it dedicated AI acceleration hardware that the Arc Pro B390 lacks entirely. Its 36 RT cores triple the ray tracing capability of the Intel part's 12 RT cores. For professional workloads such as 3D modeling, video editing, and machine learning inference, the NVIDIA GPU's architectural advantages translate directly into higher throughput. The Arc Pro B390, as an integrated solution, trades raw performance for integration simplicity and lower power draw, making it suitable for mainstream laptops where dedicated graphics are not required.