Intel Arc B770 vs NVIDIA RTX 4000 Mobile Ada Generation Comparison

Where Each One Wins

The Intel Arc B770 and NVIDIA RTX 4000 Mobile Ada Generation occupy different performance tiers despite sharing a 5 nm TSMC manufacturing process. The recorded data shows a clean split based on workload characteristics and power constraints.

The Arc B770 is a desktop-oriented discrete card with a 225 W TDP, a 256-bit memory bus, and 16 GB of GDDR6 memory. It delivers 19.66 TFLOPS of FP32 compute and 39.32 TFLOPS of FP16 (2:1 ratio). Its pixel rate reaches 307.2 GPixel/s and texture rate hits 614.4 GTexel/s. These figures place it as a high-throughput rasterization engine, with the 128 ROPs and 256 TMUs supporting heavy fill-rate workloads.

The RTX 4000 Mobile Ada Generation is a mobile chip with a 110 W TDP, a 192-bit bus, and 12 GB of GDDR6 memory. It provides 24.72 TFLOPS of FP32 and 24.72 TFLOPS of FP16 (1:1 ratio). Its pixel rate is 133.2 GPixel/s and texture rate is 386.3 GTexel/s. The mobile part uses 7,424 shading units, 232 tensor cores, and 58 RT cores, making it strong for ray tracing and AI-accelerated tasks.

The benchmark database shows no recorded head-to-head benchmark wins for either card, so the wins must be inferred from the specification data. The Arc B770 wins in memory capacity (16 GB vs 12 GB), memory bandwidth (512.0 GB/s vs 432.0 GB/s), pixel fill rate (307.2 vs 133.2 GPixel/s), texture fill rate (614.4 vs 386.3 GTexel/s), and FP16 throughput (39.32 vs 24.72 TFLOPS). The RTX 4000 Mobile wins in FP32 throughput (24.72 vs 19.66 TFLOPS), shading unit count (7,424 vs 4,096), RT core count (58 vs 32), and tensor core availability (232 vs none listed).

For gaming at high resolutions or with heavy texture work, the Arc B770's wider memory bus and higher fill rates give it an edge. For compute tasks that rely on raw FP32 throughput or for ray tracing workloads, the RTX 4000 Mobile has the advantage. The Arc B770 also leads in FP16 compute, which matters for applications that can use reduced precision.

Architecture Differences

The two chips use different architectures from different vendors. The Arc B770 uses Xe2-HPG, Intel's second-generation high-performance graphics architecture, built on the BMG-G31 chip. It belongs to the Battlemage (Arc 7) generation and follows the Alchemist predecessor. The RTX 4000 Mobile uses Ada Lovelace architecture on the AD104 chip, part of the GeForce 40-series, with Ampere-MW as its predecessor and Blackwell-MW as its successor.

Process technology is similar: both use 5 nm fabrication at TSMC. The transistor counts differ significantly. The RTX 4000 Mobile packs 35,800 million transistors on a 294 mm² die, giving a transistor density of 121.8M per mm². The Arc B770's transistor count is listed as unknown, but its die size is 368 mm², which is larger than the NVIDIA chip.

Memory configurations diverge sharply. The Arc B770 uses 16 GB of GDDR6 on a 256-bit bus, running at 2000 MHz with 16 Gbps effective speed, yielding 512.0 GB/s bandwidth. The RTX 4000 Mobile uses 12 GB of GDDR6 on a 192-bit bus, running at 2250 MHz with 18 Gbps effective speed, yielding 432.0 GB/s bandwidth. The Intel card has a 48-bit wider bus and 4 GB more memory.

The compute unit layouts also differ. The Arc B770 has 4,096 shading units, 256 TMUs, 128 ROPs, and 32 RT cores. The RTX 4000 Mobile has 7,424 shading units, 232 TMUs, 80 ROPs, and 58 RT cores. The NVIDIA chip has 3,328 more shading units and 26 more RT cores, while the Intel chip has 24 more TMUs and 48 more ROPs. The RTX 4000 Mobile also includes 232 tensor cores, a feature absent from the Arc B770's listed specifications.

Power delivery is another major difference. The Arc B770 has a 225 W TDP, requires a dual-slot cooler, and uses 1x 6-pin plus 1x 8-pin power connectors with a suggested 550 W PSU. The RTX 4000 Mobile has a 110 W TDP, uses an IGP form factor, and requires no power connectors. The Intel card is designed for desktop installation, while the NVIDIA chip is for mobile platforms with portable device dependent display outputs.

The Arc B770 supports 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs, while the RTX 4000 Mobile's display outputs are listed as portable device dependent. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

FAQ

Q: Which card has more memory bandwidth?

A: The Intel Arc B770 has 512.0 GB/s bandwidth from its 256-bit bus and 16 Gbps effective GDDR6 memory. The RTX 4000 Mobile has 432.0 GB/s from a 192-bit bus and 18 Gbps effective memory.

Q: Which card has higher FP32 compute throughput?

A: The RTX 4000 Mobile leads with 24.72 TFLOPS compared to the Arc B770's 19.66 TFLOPS. The NVIDIA chip also has more shading units (7,424 vs 4,096).

Q: How do the memory capacities compare?

A: The Arc B770 has 16 GB of GDDR6, while the RTX 4000 Mobile has 12 GB of GDDR6. The Intel card provides 4 GB more memory capacity.

Q: Which card supports tensor cores?

A: The RTX 4000 Mobile includes 232 tensor cores for AI acceleration. The Arc B770's specification list does not include tensor cores.

Q: What are the power requirements for each card?

A: The Arc B770 has a 225 W TDP, uses dual-slot cooling, and needs 1x 6-pin plus 1x 8-pin power connectors with a suggested 550 W PSU. The RTX 4000 Mobile has a 110 W TDP, uses an IGP form factor, and requires no power connectors.

Q: Which card has more RT cores?

A: The RTX 4000 Mobile has 58 RT cores, while the Arc B770 has 32 RT cores. The NVIDIA chip has 26 more RT cores for ray tracing workloads.

Specification Differences

| Specification | Intel Arc B770 | NVIDIA RTX 4000 Mobile Ada Generation |

|----------------|----------------|----------------------------------------|

| Chip | BMG-G31 | AD104 |

| Architecture | Xe2-HPG | Ada Lovelace |

| Generation | Battlemage (Arc 7) | Ada-MW |

| Die Size | 368 mm² | 294 mm² |

| Transistors | unknown | 35,800 million |

| Transistor Density | null | 121.8M / mm² |

| Base Clock | 2100 MHz | 1290 MHz |

| Boost Clock | 2400 MHz | 1665 MHz |

| Memory Clock | 2000 MHz 16 Gbps effective | 2250 MHz 18 Gbps effective |

| Memory Size | 16 GB | 12 GB |

| Memory Type | GDDR6 | GDDR6 |

| Memory Bus Width | 256 bit | 192 bit |

| Memory Bandwidth | 512.0 GB/s | 432.0 GB/s |

| Shading Units | 4096 | 7424 |

| TMUs | 256 | 232 |

| ROPs | 128 | 80 |

| RT Cores | 32 | 58 |

| Tensor Cores | null | 232 |

| Pixel Rate | 307.2 GPixel/s | 133.2 GPixel/s |

| Texture Rate | 614.4 GTexel/s | 386.3 GTexel/s |

| FP32 | 19.66 TFLOPS | 24.72 TFLOPS |

| FP16 | 39.32 TFLOPS (2:1) | 24.72 TFLOPS (1:1) |

| TDP | 225 W | 110 W |

| Slot Width | Dual-slot | IGP |

| Power Connectors | 1x 6-pin + 1x 8-pin | None |

| Suggested PSU | 550 W | null |

| Display Outputs | 1x HDMI 2.1a, 3x DisplayPort 2.1 | Portable Device Dependent |

| Release Date | 2025-12-31 | 2023-03-20 |

| Production Status | null | Active |

| Predecessor | Alchemist | Ampere-MW |

| Successor | null | Blackwell-MW |

Head-to-Head Benchmarks

The database contains no recorded head-to-head benchmark scores for these two cards, so the comparison relies entirely on the specification data. The most significant margins appear in fill rate and compute throughput.

The Arc B770 leads in pixel rate by a factor of 2.3, delivering 307.2 GPixel/s versus 133.2 GPixel/s. This advantage comes from the 128 ROPs and 2400 MHz boost clock, compared to the RTX 4000 Mobile's 80 ROPs and 1665 MHz boost clock. For rasterization-heavy workloads with high resolution and anti-aliasing, this gap is substantial.

Texture rate also favors the Intel card. The Arc B770 delivers 614.4 GTexel/s versus 386.3 GTexel/s, a 1.6x advantage. The 256 TMUs on the Intel chip outnumber the 232 TMUs on the NVIDIA chip, and the higher clock speed amplifies the difference. Games with heavy texture sampling and anisotropic filtering benefit from this margin.

Memory bandwidth gives the Arc B770 a 18.5% lead (512.0 GB/s vs 432.0 GB/s). The wider 256-bit bus compensates for the lower effective memory speed (16 Gbps vs 18 Gbps). This bandwidth advantage supports the higher fill rates and helps maintain performance in bandwidth-sensitive scenarios.

FP16 compute strongly favors the Intel card. The Arc B770 produces 39.32 TFLOPS (2:1 ratio) versus 24.72 TFLOPS (1:1 ratio) on the NVIDIA chip. This 59% lead matters for AI inference and some compute workloads that use reduced precision. However, the RTX 4000 Mobile's tensor cores provide dedicated hardware for such tasks, which may offset the raw FP16 advantage in practice.

FP32 compute goes the other way. The RTX 4000 Mobile delivers 24.72 TFLOPS versus 19.66 TFLOPS on the Arc B770, a 26% lead. The higher shading unit count (7,424 vs 4,096) drives this advantage despite the lower clock speeds (1665 MHz boost vs 2400 MHz boost). General-purpose compute and FP32-heavy graphics workloads favor the NVIDIA chip.

Ray tracing resources favor the RTX 4000 Mobile, with 58 RT cores versus 32 RT cores. This 81% advantage in RT core count suggests better ray tracing performance, though the Arc B770's higher pixel rate may help in mixed workloads.

The power envelope is a defining difference. The RTX 4000 Mobile operates at 110 W TDP, less than half of the Arc B770's 225 W TDP. For mobile platforms with limited cooling and battery capacity, this efficiency is critical. The Arc B770's dual-slot cooler and external power connectors make it unsuitable for portable devices.

The Verdict

The data indicates that these cards target different use cases. The Intel Arc B770 is a desktop graphics card with high fill rates, large memory capacity, and wide memory bandwidth. Its 16 GB GDDR6 configuration, 512.0 GB/s bandwidth, and 307.2 GPixel/s pixel rate make it suitable for high-resolution gaming and content creation that demands large frame buffers.

The NVIDIA RTX 4000 Mobile Ada Generation is a mobile chip with higher FP32 compute, more shading units, dedicated tensor cores, and more RT cores. Its 110 W TDP and IGP form factor make it appropriate for laptops and workstations where power efficiency and portability are priorities.

Users who need maximum rasterization throughput, larger memory capacity, or FP16 compute should consider the Arc B770. Its 225 W TDP requires a desktop platform with adequate power supply, as indicated by the suggested 550 W PSU. The release date of 2025-12-31 places it as a newer product.

Users who need FP32 compute, ray tracing performance, AI acceleration, or mobile form factors should consider the RTX 4000 Mobile. Its 35,800 million transistors and 121.8M per mm² density show a dense design with 232 tensor cores and 58 RT cores. The 2023-03-20 release date and active production status indicate an established product.

The selection between these two depends entirely on the platform and workload. A desktop user prioritizing fill rate and memory capacity has a clear path to the Arc B770. A mobile user prioritizing compute throughput and ray tracing has a clear path to the RTX 4000 Mobile. Both cards share the same API support (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4) and process node (5 nm TSMC), so software compatibility is broadly similar. The recorded data shows no benchmark wins for either card, leaving the specification differences as the primary basis for decision-making.