Intel Arc Pro B70 vs NVIDIA GeForce RTX 4080 Mobile Comparison

The Verdict

The database comparison between the Intel Arc Pro B70 and the NVIDIA GeForce RTX 4080 Mobile presents a clear split between a high-power desktop professional card and a mobile laptop part. The Intel Arc Pro B70, built on the Xe2-HPG architecture, targets a fixed workstation environment with a 230 W TDP and a dual-slot cooler. The NVIDIA GeForce RTX 4080 Mobile, based on Ada Lovelace, is an integrated mobile part with a 110 W TDP, designed to fit into laptops.

For raw compute workloads and memory-heavy tasks, the Intel Arc Pro B70 is the logical pick. It offers 32 GB of GDDR6 memory on a 256-bit bus, yielding 608.0 GB/s of bandwidth. That is a substantial advantage for large datasets, rendering scenes, or AI inference where memory capacity directly impacts performance. The RTX 4080 Mobile's 12 GB GDDR6 on a 192-bit bus provides 432.0 GB/s, which is sufficient for gaming but restrictive for professional workloads that need to hold entire models or textures in VRAM.

For gaming and general mobile use, the RTX 4080 Mobile holds the advantage. It sits in the 81st percentile of all GPUs in the database, while the Intel Arc Pro B70 sits in the 50th percentile. The NVIDIA part also has a recorded average benchmark score of 38135, while the Intel part has a score of 0 in the database, meaning no direct benchmark scores are available for it. The RTX 4080 Mobile shows a 1.3% score advantage over the desktop NVIDIA GeForce RTX 4070 and a 1.3% edge over the NVIDIA Tesla P4, according to nearest rival data. This indicates the mobile part performs at a level near a desktop RTX 4070.

The verdict is straightforward: choose the Intel Arc Pro B70 for professional, compute-focused desktop builds where memory capacity and bandwidth are critical. Choose the NVIDIA GeForce RTX 4080 Mobile for a laptop that needs strong, verified gaming performance and a proven benchmark track record.

Architecture Differences

The two GPUs come from different architectural lineages. The Intel Arc Pro B70 uses the Xe2-HPG architecture on the BMG-G31 chip, part of the Battlemage (Pro Series) generation. The NVIDIA GeForce RTX 4080 Mobile uses the Ada Lovelace architecture on the AD104 chip, part of the GeForce 40 Mobile generation.

Both are fabricated on a 5 nm process at TSMC, so the underlying transistor manufacturing is identical. The die sizes differ: the Intel chip is larger at 368 mm², while the NVIDIA chip is 294 mm². The NVIDIA chip contains 35,800 million transistors, giving it a transistor density of 121.8M / mm². The Intel chip's transistor count is listed as unknown in the database.

The core configurations differ significantly. The Intel Arc Pro B70 has 4096 shading units, 256 TMUs, and 128 ROPs. It also has 32 ray tracing cores and no dedicated tensor cores. The NVIDIA part has 7424 shading units, 232 TMUs, and 80 ROPs. It has 58 ray tracing cores and 232 tensor cores. This gives NVIDIA a substantial lead in shader count and ray tracing hardware, while Intel counters with more TMUs and ROPs.

Memory architecture also diverges. The Intel part uses 32 GB GDDR6 on a 256-bit bus. The NVIDIA part uses 12 GB GDDR6 on a 192-bit bus. Both use GDDR6, but the Intel card has more than double the capacity and a wider bus. The memory clock is 2375 MHz (19 Gbps effective) for Intel, versus 2250 MHz (18 Gbps effective) for NVIDIA.

The power and physical design are opposite ends of the spectrum. The Intel card requires a 230 W TDP, a dual-slot cooler, a single 8-pin power connector, and a 550 W suggested PSU. It is a desktop card measuring 267 mm long, 110 mm tall, and 39 mm wide. The NVIDIA mobile part has a 110 W TDP, is listed as an IGP (integrated graphics processor) with no power connectors, and has a bus interface of PCIe 4.0 x16. The Intel card uses PCIe 5.0 x16.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between these two GPUs. However, the RTX 4080 Mobile has a full set of recorded benchmark scores, while the Intel Arc Pro B70 has none. This absence of data is itself a meaningful finding.

For the NVIDIA part, the recorded scores show a range of performance across different API tests. In Geekbench OpenCL, it scores 159575. In Geekbench Vulkan, it scores 145807. PassMark results show a DirectX 10 score of 157, DirectX 11 score of 244, DirectX 12 score of 96, and DirectX 9 score of 286. The PassMark G2D score is 929, the G3D score is 24926, and the GPU compute score is 11191. The average benchmark score across all tests is 38135.

The Intel Arc Pro B70 has an average benchmark score of 0 and no individual test results. This means the database cannot confirm its real-world performance in these specific tests. The percentile ranking of 50 for the Intel part versus 81 for the NVIDIA part reflects the available data. The Intel card's 50th percentile is based on its hardware specifications and position among all GPUs, but it lacks the empirical score verification the NVIDIA part has.

The nearest rivals for the RTX 4080 Mobile provide context. The NVIDIA GeForce MX570 has an average score of 38299, which is 0.4% higher than the RTX 4080 Mobile. The NVIDIA GeForce RTX 5080 Mobile scores 38349, 0.6% higher. The NVIDIA GeForce RTX 4070 scores 37648, which is 1.3% lower. The NVIDIA Tesla P4 scores 37628, also 1.3% lower. This places the RTX 4080 Mobile in a tight performance band around these established parts.

FAQ

Q: Which GPU has more memory bandwidth?

A: The Intel Arc Pro B70 has 608.0 GB/s of bandwidth from its 32 GB GDDR6 memory on a 256-bit bus. The NVIDIA GeForce RTX 4080 Mobile has 432.0 GB/s from its 12 GB GDDR6 on a 192-bit bus.

Q: What is the power draw difference?

A: The Intel Arc Pro B70 has a 230 W TDP and requires a dual-slot cooler, a single 8-pin power connector, and a 550 W suggested PSU. The NVIDIA GeForce RTX 4080 Mobile has a 110 W TDP and is classified as an IGP with no power connectors.

Q: Does the NVIDIA part have dedicated AI hardware?

A: Yes, the NVIDIA GeForce RTX 4080 Mobile has 232 tensor cores. The Intel Arc Pro B70 has no tensor cores listed in the database.

Q: Which API versions do both support?

A: Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. There is no difference in API support between the two.

Q: What is the release timing difference?

A: The NVIDIA GeForce RTX 4080 Mobile was released on 2023-01-02. The Intel Arc Pro B70 has a release date of 2026-03-25. The NVIDIA part is listed as Active production status, while the Intel part has no production status listed.

Q: How does the RTX 4080 Mobile compare to a desktop RTX 4070?

A: The RTX 4080 Mobile has an average benchmark score of 38135, which is 1.3% higher than the NVIDIA GeForce RTX 4070's average score of 37648.

Where Each One Wins

The Intel Arc Pro B70 wins in memory capacity and bandwidth. Its 32 GB GDDR6 pool is 20 GB larger than the NVIDIA part's 12 GB, and its 608.0 GB/s bandwidth is 176 GB/s higher. This makes it the better option for workloads that load large datasets into VRAM, such as high-resolution rendering, machine learning training with large batch sizes, or multi-display professional visualization. The Intel card also has a faster boost clock at 2800 MHz versus 1665 MHz for the NVIDIA part, and a higher base clock at 2280 MHz versus 1290 MHz.

The Intel card also wins in texture and pixel throughput. Its 716.8 GTexel/s texture rate is nearly double the NVIDIA part's 386.3 GTexel/s. Its 358.4 GPixel/s pixel rate is more than 2.5 times the NVIDIA part's 133.2 GPixel/s. These metrics are relevant for fill-rate-bound workloads like 3D rendering and image processing.

The NVIDIA GeForce RTX 4080 Mobile wins in empirical benchmark verification. It has nine recorded scores in the database, covering OpenCL, Vulkan, and multiple DirectX versions. Its average score of 38135 and 81st percentile ranking are concrete data points. The Intel part has no recorded scores and sits at the 50th percentile.

The NVIDIA part also wins in shader count and ray tracing hardware. Its 7424 shading units exceed the Intel part's 4096 by a wide margin. Its 58 ray tracing cores are nearly double the Intel part's 32. The 232 tensor cores add dedicated AI acceleration that the Intel part lacks. This suggests the NVIDIA part is better suited for ray-traced gaming, AI upscaling, and compute tasks that use tensor operations.

The NVIDIA part wins in physical flexibility. It is an IGP with a 110 W TDP and no power connectors, making it suitable for laptops. The Intel card is a 230 W dual-slot desktop part requiring external power and a 550 W PSU.

Specification Differences

The two GPUs differ across nearly every specification category.

Chip and Architecture: Intel uses the BMG-G31 chip with Xe2-HPG architecture in the Battlemage (Pro Series) generation. NVIDIA uses the AD104 chip with Ada Lovelace architecture in the GeForce 40 Mobile generation.

Process and Die: Both use TSMC's 5 nm process. Intel's die is 368 mm². NVIDIA's die is 294 mm². NVIDIA's transistor count is 35,800 million with a density of 121.8M / mm². Intel's transistor count is unknown.

Clocks: Intel's base clock is 2280 MHz, boost is 2800 MHz, and memory clock is 2375 MHz (19 Gbps effective). NVIDIA's base clock is 1290 MHz, boost is 1665 MHz, and memory clock is 2250 MHz (18 Gbps effective).

Memory: Intel has 32 GB GDDR6 on a 256-bit bus with 608.0 GB/s bandwidth. NVIDIA has 12 GB GDDR6 on a 192-bit bus with 432.0 GB/s bandwidth.

Core Configuration: Intel has 4096 shading units, 256 TMUs, 128 ROPs, and 32 ray tracing cores. NVIDIA has 7424 shading units, 232 TMUs, 80 ROPs, 58 ray tracing cores, and 232 tensor cores.

Performance Rates: Intel's pixel rate is 358.4 GPixel/s and texture rate is 716.8 GTexel/s. NVIDIA's pixel rate is 133.2 GPixel/s and texture rate is 386.3 GTexel/s. Intel's FP32 is 22.94 TFLOPS and FP16 is 45.88 TFLOPS (2:1). NVIDIA's FP32 is 24.72 TFLOPS and FP16 is 24.72 TFLOPS (1:1).

Power and Cooling: Intel has a 230 W TDP, dual-slot width, one 8-pin connector, and a 550 W suggested PSU. NVIDIA has a 110 W TDP, IGP slot width, and no power connectors.

Bus Interface: Intel uses PCIe 5.0 x16. NVIDIA uses PCIe 4.0 x16.

Display Outputs: Intel provides 1x HDMI 2.1a and 3x DisplayPort 2.1. NVIDIA's outputs are listed as portable device dependent.

Physical Dimensions: Intel measures 267 mm in length, 110 mm in height, and 39 mm in width. NVIDIA has no recorded dimensions.

Release Dates: Intel's release date is 2026-03-25 with a launch MSRP of 949 USD. NVIDIA's release date is 2023-01-02 with no launch MSRP. NVIDIA lists its predecessor as GeForce 30 Mobile and successor as GeForce 50 Mobile. Intel has no predecessor or successor listed.