Intel Arc B370 vs NVIDIA GeForce RTX 4070 Mobile Comparison

The Intel Arc B370 and the NVIDIA GeForce RTX 4070 Mobile represent two fundamentally different approaches to mobile graphics. The data shows a clear performance gulf, but the comparison extends beyond raw speed to architectural philosophy and target application. The Arc B370 is a low-power integrated solution, while the RTX 4070 Mobile is a high-performance discrete part. This analysis uses recorded benchmark data to break down where each unit stands.

Where Each One Wins

The performance split between these two is stark, based on the database records. The NVIDIA GeForce RTX 4070 Mobile wins in every recorded benchmark category where both have data. Its average benchmark score is 27435, placing it in the 73rd percentile of all GPUs. The Intel Arc B370 has an average score of 1184, which places it in the 5th percentile. This is not a close contest; the RTX 4070 Mobile is in a completely different performance tier.

The Intel Arc B370’s only advantage is its power profile and integration. It is an integrated graphics processor (IGP) with a 25 W TDP, designed for portable devices where power draw is the primary constraint. The RTX 4070 Mobile, also an IGP in terms of slot width, has a 115 W TDP, which is substantially higher. In scenarios where a device must run on battery for extended periods or requires no discrete graphics memory, the Arc B370’s design is the clear winner. For any compute or graphics workload that demands performance, the RTX 4070 Mobile is the definitive choice.

Architecture Differences

The two GPUs use entirely different architectures, process nodes, and memory solutions. The Intel Arc B370 is built on the Xe3-LPG architecture, using a 3 nm process at Intel’s foundry. It is part of the Arc Graphics-M (Panther Lake) generation. The RTX 4070 Mobile uses the Ada Lovelace architecture, built on a 5 nm process at TSMC, and belongs to the GeForce 40 Mobile generation.

The compute resources diverge significantly. The Arc B370 has 1280 shading units, 40 texture mapping units (TMUs), and 20 render output units (ROPs). The RTX 4070 Mobile has 4608 shading units, 144 TMUs, and 48 ROPs. This is a 3.6x difference in shading units and a 3.6x difference in TMUs. The RTX 4070 Mobile also has 36 ray tracing cores and 144 tensor cores, while the Arc B370 has 10 ray tracing cores and no dedicated tensor cores listed.

Memory architecture is another major split. The Arc B370 uses system shared memory, meaning its bandwidth is system dependent and its bus width is system shared. The RTX 4070 Mobile has 8 GB of dedicated GDDR6 memory on a 128-bit bus, providing 256.0 GB/s of bandwidth. This dedicated memory gives the NVIDIA part a massive advantage in memory-intensive workloads, as it does not compete with the CPU for system RAM.

The RTX 4070 Mobile’s transistor count is 22,900 million on a 188 mm² die, giving a density of 121.8M / mm². The Arc B370’s transistor count and die size are listed as unknown. Clock speeds also differ: the Arc B370 has a base clock of 300 MHz and a boost of 2400 MHz, while the RTX 4070 Mobile has a base of 1395 MHz and a boost of 1695 MHz. The higher boost clock on the Intel part does not compensate for its far lower shader count.

The Verdict

The data indicates that the NVIDIA GeForce RTX 4070 Mobile is the superior choice for any user who prioritizes graphics performance. Its benchmark scores are several orders of magnitude higher. The RTX 4070 Mobile’s nearest rivals in the database include the AMD Radeon RX 6700 XT (0% delta) and the NVIDIA GeForce RTX 3090 (-0.5% delta), showing it performs at a desktop-class level. The Intel Arc B370’s nearest rivals are older, low-end parts like the ATI Mobility Radeon HD 5570 (-0.2% delta) and AMD Radeon HD 7650M (-0.7% delta), confirming its entry-level positioning.

The Intel Arc B370 is the logical pick for a system where power efficiency is the absolute priority. Its 25 W TDP is a fraction of the RTX 4070 Mobile’s 115 W, and its integrated nature with no power connectors makes it suitable for thin, fanless designs. The RTX 4070 Mobile, with its 115 W TDP and PCIe 4.0 x8 interface, is intended for gaming laptops and mobile workstations that can supply adequate cooling and power.

For a builder selecting a GPU for a new laptop, the choice is clear: the RTX 4070 Mobile delivers the performance, and the Arc B370 delivers the efficiency. There is no middle ground in the recorded data. The RTX 4070 Mobile’s 15.62 TFLOPS FP32 performance and 244.1 GTexel/s texture rate are far beyond the Arc B370’s 6.144 TFLOPS and 96.00 GTexel/s. The verdict from the data is that these are not competitors but rather solutions for opposite ends of the mobile spectrum.

FAQ

Q: Which GPU has higher raw performance?

A: The NVIDIA GeForce RTX 4070 Mobile. Its average benchmark score is 27435, while the Intel Arc B370 scores 1184. The RTX 4070 Mobile is in the 73rd percentile of all GPUs, whereas the Arc B370 is in the 5th percentile.

Q: Does the Intel Arc B370 have any advantage over the RTX 4070 Mobile?

A: Yes, in power consumption. The Arc B370 has a TDP of 25 W, compared to the RTX 4070 Mobile’s 115 W. It also uses system shared memory, which removes the need for dedicated VRAM.

Q: How much faster is the RTX 4070 Mobile in compute tasks?

A: The RTX 4070 Mobile delivers 15.62 TFLOPS FP32 performance, while the Arc B370 delivers 6.144 TFLOPS. The NVIDIA part also has 144 tensor cores for AI workloads, while the Arc B370 has none listed.

Q: What is the memory setup for each GPU?

A: The Arc B370 uses system shared memory with system-dependent bandwidth. The RTX 4070 Mobile has 8 GB of GDDR6 memory on a 128-bit bus, offering 256.0 GB/s of dedicated bandwidth.

Q: Are these GPUs comparable in ray tracing?

A: No. The RTX 4070 Mobile has 36 ray tracing cores, while the Arc B370 has 10. Both support DirectX 12 Ultimate, but the NVIDIA part has significantly more hardware for ray tracing.

Q: Which GPU is more likely to be found in a high-end laptop?

A: The RTX 4070 Mobile, based on its 115 W TDP, PCIe 4.0 x8 interface, and dedicated 8 GB GDDR6 memory. The Arc B370’s 25 W TDP and integrated design suggest it is for low-power ultrathin devices.

Head-to-Head Benchmarks

The database does not contain a direct head-to-head benchmark between these two units, but the individual scores are clear. The RTX 4070 Mobile’s average benchmark score of 27435 dwarfs the Arc B370’s 1184. To put that in perspective, the RTX 4070 Mobile’s score is roughly 23 times higher. The Arc B370’s nearest rival, the ATI Mobility Radeon HD 5570, has an average score of 1186, which is only 0.2% higher. The RTX 4070 Mobile’s nearest rival, the AMD Radeon RX 6700 XT, has a score of 27425, a 0% delta, showing that the RTX 4070 Mobile is effectively tied with a desktop card.

Specific benchmark results for the RTX 4070 Mobile show a Passmark G3D score of 19587 and a Geekbench OpenCL score of 109197. The Arc B370 has only one recorded benchmark: a 3DMark Steel Nomad DX12 score of 1184. In that test, the Arc B370’s performance is 0.2% below the ATI Mobility Radeon HD 5570 and 1.4% above the AMD FirePro M2000. The RTX 4070 Mobile’s Passmark DirectX 11 score of 179 is a low number, but this metric likely reflects a specific legacy workload, not its overall capability. Its Passmark GPU Compute score of 8399 and Geekbench Vulkan score of 108367 indicate strong compute and modern API performance.

The biggest win for the RTX 4070 Mobile is in raw throughput. Its texture rate of 244.1 GTexel/s is 2.5 times higher than the Arc B370’s 96.00 GTexel/s. Its pixel rate of 81.36 GPixel/s is 1.7 times higher than the Arc B370’s 48.00 GPixel/s. These figures confirm that the NVIDIA part is not just faster in synthetic tests but also has higher real-world rendering capabilities. The Arc B370’s only win is in clock speed, where its 2400 MHz boost exceeds the RTX 4070 Mobile’s 1695 MHz boost, but this is irrelevant given the massive difference in core count.

Specification Differences

The two GPUs differ in nearly every measurable specification. The Intel Arc B370 uses a 3 nm process at Intel, while the NVIDIA GeForce RTX 4070 Mobile uses a 5 nm process at TSMC. The Arc B370 has 1280 shading units, 40 TMUs, and 20 ROPs. The RTX 4070 Mobile has 4608 shading units, 144 TMUs, and 48 ROPs. The RTX 4070 Mobile has 36 ray tracing cores and 144 tensor cores; the Arc B370 has 10 ray tracing cores and no tensor cores.

Memory is a major difference: the Arc B370 uses system shared memory, while the RTX 4070 Mobile has 8 GB of GDDR6 on a 128-bit bus with 256.0 GB/s bandwidth. The RTX 4070 Mobile’s base clock is 1395 MHz and boost is 1695 MHz, with memory at 2000 MHz (16 Gbps effective). The Arc B370’s base clock is 300 MHz and boost is 2400 MHz. The RTX 4070 Mobile has a TDP of 115 W, while the Arc B370 has a TDP of 25 W. The RTX 4070 Mobile uses a PCIe 4.0 x8 interface, while the Arc B370 uses an IGP bus interface. Both have no power connectors and are listed as IGP slot width.

The RTX 4070 Mobile has a transistor count of 22,900 million on a 188 mm² die, with a density of 121.8M / mm². The Arc B370’s transistor count and die size are unknown. The RTX 4070 Mobile supports DirectX 12 Ultimate, OpenGL 4.6, and Vulkan 1.4, which matches the Arc B370’s API support. The release dates differ significantly: the Arc B370 was released on 2026-01-26, while the RTX 4070 Mobile was released on 2023-01-02. The RTX 4070 Mobile has a predecessor in the GeForce 30 Mobile and a successor in the GeForce 50 Mobile, while the Arc B370 has none listed.