AMD Radeon RX 6450M vs Intel Arc B770 Comparison

The Verdict

The recorded data positions the Intel Arc B770 as the overwhelmingly stronger performer across nearly every measurable specification. It carries 4096 shading units against 768 for the AMD Radeon RX 6450M, along with 4 times the TMUs, 4 times the ROPs, and a 16 GB frame buffer that is 4 times larger. The Arc B770 also posts 19.66 TFLOPS of FP32 compute versus 3.779 TFLOPS for the RX 6450M, a 5.2x margin. The RX 6450M, by contrast, is a 50 W integrated-class part intended for portable devices, while the Arc B770 is a dual-slot desktop card with a 225 W TDP and a 550 W suggested PSU. For users constrained to a thin-and-light laptop with no discrete power connectors, the RX 6450M is the only viable option. For anyone building or upgrading a desktop system with a PCIe 4.0 x16 slot and adequate power delivery, the Arc B770 delivers dramatically higher throughput in every category measured.

Architecture Differences

The two GPUs come from different architectural generations and design philosophies. AMD uses the Navi 24 chip built on RDNA 2.0, manufactured on a 6 nm TSMC process. The die measures 107 mm² and contains 5,400 million transistors, yielding a transistor density of 50.5 million per square millimeter. Intel counters with the BMG-G31 chip based on Xe2-HPG architecture, fabricated on a 5 nm TSMC node. Its die is substantially larger at 368 mm², though Intel has not disclosed the transistor count for this part. The RX 6450M belongs to the Navi Mobile (RX 6000M) generation, while the Arc B770 is part of the Battlemage (Arc 7) generation. AMD's predecessor for this mobile line is Polaris Mobile; Intel's predecessor is Alchemist.

Memory architecture diverges sharply. The RX 6450M uses 4 GB of GDDR6 on a 64-bit bus, producing 128.0 GB/s of bandwidth. The Arc B770 uses 16 GB of GDDR6 on a 256-bit bus, quadrupling bandwidth to 512.0 GB/s. Both run memory at 2000 MHz with 16 Gbps effective speed, but the wider bus gives Intel the decisive advantage. The RX 6450M connects via PCIe 4.0 x4, whereas the Arc B770 uses PCIe 4.0 x16, which matters for data transfer rates and potential CPU bottlenecks in bandwidth-sensitive workloads. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API-level features are equivalent. Ray tracing hardware exists on both: 12 RT cores on AMD versus 32 RT cores on Intel. Neither has dedicated tensor cores listed.

Where Each One Wins

The RX 6450M wins exclusively in power efficiency and physical footprint. Its 50 W TDP is a fraction of the Arc B770's 225 W. It is listed as an IGP form factor with no power connectors, meaning it can be integrated into a portable device without any external power cabling. Its display outputs are described as portable device dependent, reinforcing its role in laptops or compact all-in-one systems. The Arc B770 cannot operate in such an environment; it requires a dual-slot chassis, a 1x 6-pin plus 1x 8-pin power connector setup, and a 550 W suggested PSU. The RX 6450M also has a smaller die (107 mm² versus 368 mm²) and a lower transistor count, which correlates with lower manufacturing cost and heat output, although pricing data is not available.

The Arc B770 wins in every raw performance metric. Its pixel rate of 307.2 GPixel/s compares to 78.72 GPixel/s for the RX 6450M, a 3.9x advantage. Its texture rate of 614.4 GTexel/s is 5.2x higher than the 118.1 GTexel/s of the AMD part. FP32 compute reaches 19.66 TFLOPS versus 3.779 TFLOPS, again a 5.2x gap. FP16 performance follows the same ratio: 39.32 TFLOPS versus 7.557 TFLOPS, both using a 2:1 rate. The Arc B770 also provides more display outputs (1x HDMI 2.1a and 3x DisplayPort 2.1), while the RX 6450M leaves output configuration to the portable device manufacturer. The Arc B770's 16 GB memory capacity and 512.0 GB/s bandwidth make it suitable for high-resolution textures and large datasets; the RX 6450M's 4 GB and 128.0 GB/s will limit such workloads.

FAQ

Q: Which GPU has higher raw compute performance?

A: The Intel Arc B770 delivers 19.66 TFLOPS of FP32 compute, which is 5.2 times the 3.779 TFLOPS of the AMD Radeon RX 6450M.

Q: Can the AMD Radeon RX 6450M be used in a desktop tower?

A: The RX 6450M is listed as an IGP with no power connectors and portable device dependent display outputs, so it is designed for integrated use in portable systems rather than a desktop expansion card.

Q: How much memory bandwidth does each card provide?

A: The RX 6450M provides 128.0 GB/s over a 64-bit bus, while the Arc B770 provides 512.0 GB/s over a 256-bit bus, exactly 4 times higher.

Q: Do both GPUs support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: What power connector does the Intel Arc B770 require?

A: The Arc B770 uses one 6-pin and one 8-pin power connector, with a suggested PSU rating of 550 W.

Q: Is the AMD card smaller than the Intel card?

A: The AMD Navi 24 die is 107 mm², while the Intel BMG-G31 die is 368 mm². The AMD card is also an IGP form factor versus the Intel dual-slot design.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark results for these two GPUs, and neither has an average benchmark score recorded. The comparison must therefore rely on the specification-derived performance ceilings. The largest single advantage for the Arc B770 appears in texture rate: 614.4 GTexel/s against 118.1 GTexel/s, representing a 5.2x difference. FP32 compute shows the same 5.2x ratio, with 19.66 TFLOPS versus 3.779 TFLOPS. FP16 compute also scales identically: 39.32 TFLOPS versus 7.557 TFLOPS. Pixel fill rate gives the Arc B770 a 3.9x lead at 307.2 GPixel/s versus 78.72 GPixel/s. Memory bandwidth is exactly 4x higher on the Intel part: 512.0 GB/s versus 128.0 GB/s. The RX 6450M's only numerical advantages are its 50 W TDP against 225 W and its smaller die size of 107 mm² versus 368 mm². The Arc B770 also has 4x the shading units (4096 versus 768), 4x the TMUs (256 versus 48), 4x the ROPs (128 versus 32), and 2.67x the RT cores (32 versus 12). These deltas indicate that the Arc B770 should dominate in any workload that scales with shading, texturing, rasterization, or memory throughput. The RX 6450M is suited to low-power portable use where the Arc B770 cannot physically fit.

Specification Differences

| Field | AMD Radeon RX 6450M | Intel Arc B770 |

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

| Architecture | RDNA 2.0 | Xe2-HPG |

| Generation | Navi Mobile (RX 6000M) | Battlemage (Arc 7) |

| Process node | 6 nm | 5 nm |

| Die size | 107 mm² | 368 mm² |

| Transistors | 5,400 million | unknown |

| Transistor density | 50.5M / mm² | null |

| Base clock | 2000 MHz | 2100 MHz |

| Boost clock | 2460 MHz | 2400 MHz |

| Memory size | 4 GB | 16 GB |

| Memory type | GDDR6 | GDDR6 |

| Memory bus width | 64 bit | 256 bit |

| Memory bandwidth | 128.0 GB/s | 512.0 GB/s |

| Shading units | 768 | 4096 |

| TMUs | 48 | 256 |

| ROPs | 32 | 128 |

| RT cores | 12 | 32 |

| Pixel rate | 78.72 GPixel/s | 307.2 GPixel/s |

| Texture rate | 118.1 GTexel/s | 614.4 GTexel/s |

| FP32 compute | 3.779 TFLOPS | 19.66 TFLOPS |

| FP16 compute | 7.557 TFLOPS (2:1) | 39.32 TFLOPS (2:1) |

| TDP | 50 W | 225 W |

| Slot width | IGP | Dual-slot |

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

| Suggested PSU | null | 550 W |

| Bus interface | PCIe 4.0 x4 | PCIe 4.0 x16 |

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

| Release date | 2023-01-03 | 2025-12-31 |

| Predecessor | Polaris Mobile | Alchemist |

The base clock favors Intel by 100 MHz, while the boost clock favors AMD by 60 MHz. Neither has a launch MSRP recorded, and both share a 50th percentile rank against all GPUs in the database despite their large performance gulf. The production status is listed as Active for the AMD part and null for the Intel part, which may reflect the later release date of the Battlemage card. The Arc B770's 16 GB memory capacity is the clearest indicator of its intended use case: high-resolution gaming, content creation, and compute workloads that exceed the 4 GB ceiling of the RX 6450M. The RX 6450M's 64-bit bus and 128.0 GB/s bandwidth are consistent with an entry-level mobile solution, while the Arc B770's 256-bit bus and 512.0 GB/s bandwidth align with a performance desktop segment. Both cards support the same API set, so software compatibility is not a differentiator. The physical requirements are the deciding factor: the RX 6450M drops into a portable device with no power cabling, the Arc B770 needs a full desktop slot and a 550 W power supply.