AMD Radeon RX 7900M vs Intel Arc B770 Comparison

AMD Radeon RX 7900M and Intel Arc B770 target different segments of the desktop and mobile GPU market, and the recorded data shows they diverge sharply in architecture, power requirements, and measured performance.

Where Each One Wins

The AMD Radeon RX 7900M is the clear performance leader based on available benchmark data. Its average benchmark score of 97,487 places it in the 94th percentile of all GPUs in the database. The RX 7900M delivers a Geekbench OpenCL score of 129,499 and a Geekbench Vulkan score of 158,760, along with a 3DMark Steel Nomad DX12 score of 4,201. These results indicate strong compute and graphics capabilities across both legacy OpenCL workloads and modern Vulkan and DX12 titles.

The Intel Arc B770, by contrast, has no recorded benchmark scores in the database. Its percentile rank sits at 50, and its average benchmark score is listed as zero. This makes direct performance comparisons impossible from the recorded data alone. However, the B770 does hold advantages in certain specifications that could translate to wins in specific scenarios. It operates at a higher base clock of 2,100 MHz and a higher boost clock of 2,400 MHz, compared to the RX 7900M's 1,825 MHz base and 2,090 MHz boost. The Arc B770 also has a higher texture rate at 614.4 GTexel/s versus 601.9 GTexel/s for the AMD part, suggesting it could outperform in texture-heavy workloads if driver and software support align.

For use-case selection, the RX 7900M wins on raw measured performance, compute throughput, and mobile integration. The Arc B770 wins on clock speed, texture throughput, and it is a dual-slot desktop card with discrete power connectors, making it a different class of product entirely.

Architecture Differences

The two GPUs come from different architectural lineages. The AMD Radeon RX 7900M uses the Navi 31 chip with RDNA 3.0 architecture, codenamed Plum Bonito, and belongs to the Navi Mobile generation of the RX 7000M series. Intel's Arc B770 uses the BMG-G31 chip with Xe2-HPG architecture and belongs to the Battlemage generation of the Arc 7 series.

Both are manufactured on a 5 nm process at TSMC. The AMD chip contains 57,700 million transistors on a 529 mm² die, yielding a transistor density of 109.1M per mm². Intel does not disclose the transistor count for the B770, but its die size is 368 mm², which is notably smaller than the AMD chip.

The AMD RDNA 3.0 architecture implements 4,608 shading units, 288 texture mapping units, and 192 raster operation units. It also includes 72 ray tracing cores. The Intel Xe2-HPG architecture implements 4,096 shading units, 256 TMUs, and 128 ROPs, with 32 ray tracing cores. AMD has significantly more shading units, TMUs, ROPs, and ray tracing cores.

Memory configurations are similar in capacity but differ in bandwidth. Both cards have 16 GB of GDDR6 memory on a 256-bit bus. The RX 7900M runs memory at 2,250 MHz with 18 Gbps effective speed, producing 576.0 GB/s of bandwidth. The Arc B770 runs memory at 2,000 MHz with 16 Gbps effective speed, producing 512.0 GB/s of bandwidth. The AMD card delivers 64 GB/s more memory bandwidth.

Compute throughput also diverges sharply. The RX 7900M delivers 38.52 TFLOPS of FP32 performance and 77.05 TFLOPS of FP16 performance (at a 2:1 ratio). The Arc B770 delivers 19.66 TFLOPS of FP32 and 39.32 TFLOPS of FP16, roughly half of the AMD numbers.

Power and physical design differ completely. The RX 7900M has a TDP of 180 W, uses no power connectors, and is an integrated graphics processor (IGP) with a slot width listed as IGP. Its display outputs are portable device dependent, confirming its mobile nature. The Arc B770 has a TDP of 225 W, requires a 1x 6-pin plus 1x 8-pin power connector setup, suggests a 550 W power supply, uses a dual-slot design, and offers 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs.

Both support PCIe 4.0 x16, DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RX 7900M was released on 2023-10-18, while the Arc B770 has a release date of 2025-12-31. The AMD card is the successor to Polaris Mobile, while the Intel card is the successor to Alchemist.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between the RX 7900M and the Arc B770. The head-to-head benchmark array is empty, and the win counts for both cards are zero. This means all performance conclusions must come from the individual benchmark scores and the relative positioning against other GPUs.

The RX 7900M's Geekbench Vulkan score of 158,760 represents its strongest recorded result. Its OpenCL score of 129,499 is also substantial. The 3DMark Steel Nomad DX12 score of 4,201 reflects modern DirectX 12 gaming performance. These scores position the RX 7900M in the 94th percentile of all GPUs in the database.

Using the nearest rival data for context, the RX 7900M sits 0.4% above the AMD Radeon Pro VII, which has an average score of 97,131. It sits 4.3% below the NVIDIA Quadro RTX 6000, which averages 101,872. It sits 5.4% above the AMD Radeon Instinct MI60, which averages 92,466, and 6.3% above the NVIDIA RTX A4500, which averages 91,671. These deltas show the RX 7900M clustering with professional workstation GPUs rather than mainstream gaming cards.

The Arc B770 has no benchmark scores, no nearest rivals, and its average score is zero. The data indicates it has not yet been measured in the database, so any performance comparison is speculative. The only quantitative facts available for the B770 are its specification sheet.

FAQ

Q: Which GPU has higher measured performance in the database?

A: The AMD Radeon RX 7900M has an average benchmark score of 97,487 and sits in the 94th percentile of all GPUs. The Intel Arc B770 has no recorded benchmark scores and an average score of zero.

Q: How do the memory bandwidth figures compare?

A: The RX 7900M provides 576.0 GB/s of bandwidth from 16 GB of GDDR6 on a 256-bit bus at 18 Gbps effective speed. The Arc B770 provides 512.0 GB/s from the same 16 GB GDDR6 and 256-bit bus configuration, but at 16 Gbps effective speed.

Q: What is the FP32 compute difference?

A: The RX 7900M delivers 38.52 TFLOPS of FP32 performance. The Arc B770 delivers 19.66 TFLOPS. The AMD card offers roughly twice the FP32 throughput.

Q: Which card has more ray tracing cores?

A: The RX 7900M has 72 ray tracing cores. The Arc B770 has 32 ray tracing cores.

Q: What are the power requirements for each?

A: The RX 7900M has a TDP of 180 W and uses no power connectors, functioning as an integrated graphics processor. The Arc B770 has a TDP of 225 W, requires a 1x 6-pin plus 1x 8-pin power connector, and suggests a 550 W power supply.

Q: What display outputs does each card support?

A: The RX 7900M's display outputs are portable device dependent, reflecting its mobile design. The Arc B770 offers 1x HDMI 2.1a and 3x DisplayPort 2.1 outputs as a desktop dual-slot card.

The Verdict

The recorded data supports a clear split between these two products. The AMD Radeon RX 7900M is the measured performance winner. Its 94th percentile ranking, 97,487 average score, and substantial lead in FP32 compute, memory bandwidth, shading units, and ray tracing cores make it the stronger GPU on paper and in the database. It belongs in the same performance class as professional workstation cards like the NVIDIA Quadro RTX 6000, which it trails by only 4.3%, and the AMD Radeon Pro VII, which it edges by 0.4%.

The Intel Arc B770 cannot be evaluated on measured performance because no benchmark scores exist for it. What the data does show is a desktop-oriented card with a higher boost clock (2,400 MHz versus 2,090 MHz), a higher texture rate (614.4 GTexel/s versus 601.9 GTexel/s), and a smaller die (368 mm² versus 529 mm²). Its 225 W TDP and external power connectors indicate a conventional desktop installation, while the RX 7900M's IGP form factor and portable device dependent outputs indicate a mobile implementation.

For a builder selecting a desktop GPU, the Arc B770 offers the physical design and connectivity expected of a standalone card, with a 512.0 GB/s memory bandwidth and 19.66 TFLOPS of FP32 performance. For a user prioritizing measured performance, the RX 7900M delivers the numbers: 576.0 GB/s of bandwidth, 38.52 TFLOPS, and a top-6 percentile ranking among all GPUs in the database. The choice depends entirely on whether the application requires the mobile integration of the AMD part or the desktop form factor of the Intel part.

Specification Differences

| Specification | AMD Radeon RX 7900M | Intel Arc B770 |

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

| Architecture | RDNA 3.0 | Xe2-HPG |

| Chip | Navi 31 | BMG-G31 |

| Process Node | 5 nm | 5 nm |

| Transistors | 57,700 million | unknown |

| Die Size | 529 mm² | 368 mm² |

| Base Clock | 1,825 MHz | 2,100 MHz |

| Boost Clock | 2,090 MHz | 2,400 MHz |

| Memory Clock | 2,250 MHz, 18 Gbps effective | 2,000 MHz, 16 Gbps effective |

| Memory Bandwidth | 576.0 GB/s | 512.0 GB/s |

| Shading Units | 4,608 | 4,096 |

| TMUs | 288 | 256 |

| ROPs | 192 | 128 |

| Ray Tracing Cores | 72 | 32 |

| Pixel Rate | 401.3 GPixel/s | 307.2 GPixel/s |

| Texture Rate | 601.9 GTexel/s | 614.4 GTexel/s |

| FP32 Performance | 38.52 TFLOPS | 19.66 TFLOPS |

| FP16 Performance | 77.05 TFLOPS (2:1) | 39.32 TFLOPS (2:1) |

| TDP | 180 W | 225 W |

| Slot Width | IGP | Dual-slot |

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

| Suggested PSU | None | 550 W |

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

| Release Date | 2023-10-18 | 2025-12-31 |

| Predecessor | Polaris Mobile | Alchemist |