Intel Arc Pro B70 vs NVIDIA GeForce RTX 4070 Mobile Comparison

# Intel Arc Pro B70 vs NVIDIA GeForce RTX 4070 Mobile

The Verdict

The data positions these two GPUs for entirely different use cases. The Intel Arc Pro B70, with a launch MSRP of 949 USD, targets professional and workstation workloads, offering 32 GB of memory and a 256-bit bus. The NVIDIA GeForce RTX 4070 Mobile is a laptop part, consuming 115 W and fitting into an integrated form factor. Benchmark records place the RTX 4070 Mobile at the 73rd percentile among all GPUs, while the Arc Pro B70 sits at the 50th percentile, though the Intel card has no recorded benchmark scores in the database. The RTX 4070 Mobile's average benchmark score of 27435 puts it within 0.5% of the NVIDIA GeForce RTX 3090 and exactly level with the AMD Radeon RX 6700 XT.

For users requiring massive memory capacity and professional display outputs, the Arc Pro B70 is the clear choice from the specifications alone. For those needing proven benchmark performance in a mobile form factor, the RTX 4070 Mobile delivers measurable results. The data does not support a universal winner; it supports a split decision based on workload priorities. The Arc Pro B70 offers 32 GB of GDDR6 memory and a PCIe 5.0 x16 interface, while the RTX 4070 Mobile delivers a higher shading unit count and tensor core support.

Architecture Differences

The Intel Arc Pro B70 uses the BMG-G31 chip built on the Xe2-HPG architecture, part of the Battlemage (Pro Series) generation. The NVIDIA GeForce RTX 4070 Mobile uses the AD106 chip on the Ada Lovelace architecture, belonging to the GeForce 40 Mobile series. Both are fabricated on a 5 nm process at TSMC, but the similarities end there.

The Intel chip has a die size of 368 mm², while the NVIDIA chip measures 188 mm². The RTX 4070 Mobile integrates 22,900 million transistors with a density of 121.8M per mm². The Arc Pro B70's transistor count is listed as unknown in the database. The Intel GPU offers 4096 shading units, 256 texture mapping units, and 128 raster operation pipelines. The NVIDIA GPU provides 4608 shading units, 144 TMUs, and 48 ROPs. This means the RTX 4070 Mobile has 512 more shading units but 112 fewer TMUs and 80 fewer ROPs.

Ray tracing hardware differs as well. The Arc Pro B70 has 32 RT cores, while the RTX 4070 Mobile has 36 RT cores. The NVIDIA part also includes 144 tensor cores, a feature not listed for the Intel card. Memory architecture diverges significantly: the Arc Pro B70 uses a 256-bit bus with 608.0 GB/s bandwidth, while the RTX 4070 Mobile uses a 128-bit bus with 256.0 GB/s bandwidth. Clock speeds show the Intel part running at a 2280 MHz base and 2800 MHz boost, compared to the RTX 4070 Mobile's 1395 MHz base and 1695 MHz boost. The Intel card consumes 230 W and requires a 550 W power supply, whereas the RTX 4070 Mobile consumes 115 W with no additional power connectors.

FAQ

Q: Which GPU has higher raw FP32 compute throughput?

A: The Intel Arc Pro B70 delivers 22.94 TFLOPS of FP32 performance, while the NVIDIA GeForce RTX 4070 Mobile delivers 15.62 TFLOPS. The Intel card is approximately 47% higher in this metric based on the recorded figures.

Q: How do the memory capacities compare?

A: The Arc Pro B70 has 32 GB of GDDR6 memory on a 256-bit bus, providing 608.0 GB/s of bandwidth. The RTX 4070 Mobile has 8 GB of GDDR6 memory on a 128-bit bus, providing 256.0 GB/s of bandwidth.

Q: What is the power consumption difference?

A: The Arc Pro B70 has a TDP of 230 W and requires a 550 W suggested power supply. The RTX 4070 Mobile has a TDP of 115 W and uses no external power connectors, reflecting its mobile design.

Q: Which GPU supports newer PCIe connectivity?

A: The Arc Pro B70 uses PCIe 5.0 x16, while the RTX 4070 Mobile uses PCIe 4.0 x8. The Intel card's interface provides double the lane count and a newer generation.

Q: What display outputs does each GPU provide?

A: The Arc Pro B70 includes 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs. The RTX 4070 Mobile's display outputs are listed as portable device dependent, meaning they vary by laptop implementation.

Q: How does the RTX 4070 Mobile compare to its nearest rivals?

A: The RTX 4070 Mobile scores 27435 on average, matching the AMD Radeon RX 6700 XT at 27425 with a 0% delta. It trails the NVIDIA GeForce RTX 3090 (27565) by 0.5% and the AMD Radeon Pro Vega 20 (27839) by 1.5%, while leading the NVIDIA RTX PRO 4000 Blackwell (27135) by 1.1%.

Specification Differences

The two GPUs differ across nearly every specification category. The Arc Pro B70 uses the BMG-G31 chip with Xe2-HPG architecture, while the RTX 4070 Mobile uses AD106 with Ada Lovelace. The Intel card has a 368 mm² die, the NVIDIA card a 188 mm² die. Transistor density is recorded only for the NVIDIA part at 121.8M per mm².

Clock speeds: the Arc Pro B70 runs at 2280 MHz base and 2800 MHz boost; the RTX 4070 Mobile runs at 1395 MHz base and 1695 MHz boost. Memory clocks are 2375 MHz (19 Gbps effective) for Intel and 2000 MHz (16 Gbps effective) for NVIDIA. Memory capacity is 32 GB versus 8 GB. Bus width is 256-bit versus 128-bit. Bandwidth is 608.0 GB/s versus 256.0 GB/s.

Shader resources: 4096 shading units, 256 TMUs, and 128 ROPs for Intel; 4608 shading units, 144 TMUs, and 48 ROPs for NVIDIA. RT core counts are 32 versus 36. Tensor cores exist only on the NVIDIA part at 144. Pixel rates are 358.4 GPixel/s versus 81.36 GPixel/s. Texture rates are 716.8 GTexel/s versus 244.1 GTexel/s. FP32 is 22.94 TFLOPS versus 15.62 TFLOPS. FP16 is 45.88 TFLOPS (2:1) versus 15.62 TFLOPS (1:1).

Power and physical specifications: the Arc Pro B70 has a 230 W TDP, dual-slot width, one 8-pin connector, and a 550 W suggested PSU. The RTX 4070 Mobile has a 115 W TDP, integrated form factor, no power connectors, and no suggested PSU. The Intel card measures 267 mm in length, 110 mm in height, and 39 mm in width. The NVIDIA card has no recorded dimensions. The Arc Pro B70 uses PCIe 5.0 x16; the RTX 4070 Mobile uses PCIe 4.0 x8. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Release dates are March 2026 for Intel and January 2023 for NVIDIA.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results between the Arc Pro B70 and the RTX 4070 Mobile. The Intel card has no recorded benchmark scores at all, leaving its percentile ranking at 50 based on the database's overall assessment. The RTX 4070 Mobile, by contrast, has nine recorded benchmark entries.

In Geekbench tests, the RTX 4070 Mobile scores 109197 in OpenCL and 108367 in Vulkan. Passmark results show scores of 116 in DirectX 10, 179 in DirectX 11, 85 in DirectX 12, 223 in DirectX 9, 763 in G2D, 19587 in G3D, and 8399 in GPU compute. The average benchmark score across all entries is 27435.

Without recorded benchmarks for the Arc Pro B70, the comparison must rely on specification-derived metrics. The Intel card's FP32 throughput of 22.94 TFLOPS exceeds the RTX 4070 Mobile's 15.62 TFLOPS by roughly 7.32 TFLOPS. The pixel rate of 358.4 GPixel/s is more than four times the NVIDIA card's 81.36 GPixel/s. The texture rate of 716.8 GTexel/s is nearly three times the NVIDIA card's 244.1 GTexel/s. Memory bandwidth of 608.0 GB/s is 2.375 times the RTX 4070 Mobile's 256.0 GB/s.

The RTX 4070 Mobile's higher shading unit count of 4608 versus 4096 suggests a different compute balance, but the Intel card's higher clocks compensate in raw throughput calculations. The RTX 4070 Mobile's tensor cores provide dedicated AI acceleration that the Intel card does not list.

Where Each One Wins

The Arc Pro B70 wins decisively in memory-intensive and bandwidth-dependent workloads. Its 32 GB capacity and 608.0 GB/s bandwidth support large datasets, high-resolution textures, and multi-display professional environments. The 256-bit bus doubles the RTX 4070 Mobile's 128-bit interface. The Intel card's 22.94 TFLOPS FP32 and 45.88 TFLOPS FP16 throughput indicate strong general compute and half-precision capability. The PCIe 5.0 x16 interface provides higher host-to-device transfer potential than the RTX 4070 Mobile's PCIe 4.0 x8. The three DisplayPort 2.1 outputs and HDMI 2.1a connection suit workstation display configurations.

The RTX 4070 Mobile wins in efficiency and established software ecosystem benchmarks. Its 115 W TDP is exactly half the Arc Pro B70's 230 W. The integrated form factor with no power connectors makes it suitable for laptops, while the Intel card requires a dual-slot chassis with an 8-pin connector and 550 W PSU. The recorded benchmark data confirms the RTX 4070 Mobile performs competitively against desktop-class rivals, matching the AMD Radeon RX 6700 XT and nearly matching the RTX 3090. The 144 tensor cores provide dedicated AI acceleration. The higher shading unit count of 4608 and 36 RT cores give it advantages in shader-bound and ray-traced workloads despite lower clock speeds.

The percentile data reinforces this split. The RTX 4070 Mobile ranks at the 73rd percentile among all GPUs, indicating solid overall performance. The Arc Pro B70 ranks at the 50th percentile, a neutral position driven by the absence of recorded benchmark scores. The release timeline also matters: the RTX 4070 Mobile launched in January 2023 and remains an active production part, while the Arc Pro B70 launched in March 2026 with no production status listed. For portable systems and proven software compatibility, the RTX 4070 Mobile is the data-backed choice. For workstation-class memory capacity and raw bandwidth, the Arc Pro B70's specifications make it the only option between the two.