AMD Radeon Pro Vega 48 vs Intel Arc A770 Comparison

# Intel Arc A770 vs AMD Radeon Pro Vega 48

The Intel Arc A770 and AMD Radeon Pro Vega 48 occupy very different corners of the GPU landscape, separated by process technology, memory architecture, and intended use case. The data shows a clear performance hierarchy, with the Arc A770 winning both head-to-head benchmarks by substantial margins, yet the Vega 48 retains relevance in specific professional environments. This comparison examines where each card excels, what the architectural differences imply, and which users should consider each option based strictly on the measured facts.

Where Each One Wins

The Intel Arc A770 dominates the synthetic compute and graphics workloads captured in the benchmark data. It wins both head-to-head tests, with a 103.1% advantage in Geekbench OpenCL and a 63.5% lead in Geekbench Vulkan. This translates to a 2.03x raw compute score and a 1.64x graphics API score over the Vega 48. For users prioritizing raw throughput in OpenCL-accelerated applications or Vulkan-based workloads, the Arc A770 is the unequivocal choice based on these figures.

The AMD Radeon Pro Vega 48, however, demonstrates a narrow but real niche advantage in the Metal API ecosystem. Its Geekbench Metal score of 69,010 is the only benchmark where it posts a competitive number, and it exceeds its own OpenCL result by 28.4% and its Vulkan result by 19.7%. This suggests the Vega 48 is specifically optimized for Apple's Metal framework, consistent with its Radeon Pro Mac generation designation. For macOS-centric compute tasks, the data indicates the Vega 48 may deliver more consistent performance relative to its own cross-API capabilities than the Arc A770, which lacks a Metal benchmark entirely in this dataset.

The wins distribution reflects this split: the Arc A770 claims both head-to-head victories, while the Vega 48's single strong point—Metal performance—does not factor into the direct comparison. The Arc A770's 90th percentile ranking among all GPUs versus the Vega 48's 88th percentile further underscores its overall performance advantage, though both cards sit in the upper tier of the database.

Architecture Differences

The architectural gulf between these two GPUs is vast. The Arc A770 uses Intel's Xe-HPG architecture on a 6 nm TSMC process, packing 21,700 million transistors into a 406 mm² die. The Vega 48 employs AMD's older GCN 5.0 architecture on a 14 nm GlobalFoundries process, with 12,500 million transistors spread across a larger 495 mm² die. This means the Intel chip achieves a transistor density of 53.4 million per mm², more than double the Vega 48's 25.3 million per mm², while consuming less physical area.

The memory subsystems differ fundamentally. The Arc A770 features 16 GB of GDDR6 on a 256-bit bus, delivering 512.0 GB/s of bandwidth. The Vega 48 uses 8 GB of HBM2 on a massive 2048-bit bus, yielding 402.4 GB/s. The Intel card offers double the capacity and 27.3% more bandwidth, while the AMD card's HBM2 implementation hints at its workstation heritage despite the narrower overall throughput.

Compute resources also favor the Arc A770 heavily. It packs 4,096 shading units, 256 TMUs, and 128 ROPs, compared to the Vega 48's 3,072 shading units, 192 TMUs, and 64 ROPs. The Arc A770 also includes 32 dedicated ray tracing cores, an entire feature class the Vega 48 lacks entirely. This translates to pixel rates of 307.2 GPixel/s versus 76.80 GPixel/s and texture rates of 614.4 GTexel/s versus 230.4 GTexel/s—a 4x advantage in pixel throughput and a 2.67x advantage in texture throughput.

The API support reflects their respective eras. The Arc A770 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4, while the Vega 48 is limited to DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6. The Arc A770's newer feature set includes hardware ray tracing and more advanced shading capabilities, whereas the Vega 48 lacks these modern features entirely.

Head-to-Head Benchmarks

The Geekbench OpenCL result is the most lopsided comparison in this dataset. The Arc A770 scores 109,175, while the Vega 48 manages only 53,757. This 103.1% delta means the Intel card delivers more than double the raw compute performance in OpenCL workloads. This magnitude of difference suggests the Vega 48's GCN architecture is severely outmatched by Xe-HPG in general-purpose compute tasks, likely due to the combination of the Arc A770's higher clock speeds, greater shader count, and more modern instruction set.

The Geekbench Vulkan result, while still favoring the Arc A770, shows a narrower gap. The Intel card scores 94,284 versus the Vega 48's 57,653, a 63.5% advantage. This smaller delta suggests that Vulkan's lower-level abstraction may partially mitigate the Vega 48's architectural disadvantages, though the Arc A770 still maintains a commanding lead. The Vulkan test also demonstrates the Arc A770's better scaling relative to its own OpenCL score—it achieves 86.4% of its OpenCL performance in Vulkan, while the Vega 48 only reaches 107.2% of its OpenCL score in Vulkan, indicating the AMD card is relatively more efficient in Vulkan but still far behind in absolute terms.

Notably, the Vega 48's Metal score of 69,010 sits between its OpenCL and Vulkan results, suggesting that Metal is its strongest API. However, without a comparable Arc A770 Metal benchmark, this cannot be directly compared. The average benchmark scores tell the broader story: the Arc A770 averages 68,809 across all tests, while the Vega 48 averages 60,140—a 14.4% overall advantage for the Intel card.

FAQ

Q: Which GPU has better raw compute performance in OpenCL?

A: The Intel Arc A770 scores 109,175 in Geekbench OpenCL, which is 103.1% higher than the AMD Radeon Pro Vega 48's 53,757. This represents more than a 2x performance advantage for the Arc A770.

Q: Does the AMD Radeon Pro Vega 48 win any benchmark?

A: The Vega 48 does not win any head-to-head benchmark against the Arc A770. However, it posts its best result in Geekbench Metal with a score of 69,010, which is 28.4% higher than its own OpenCL score and 19.7% higher than its Vulkan score.

Q: How do their memory configurations affect real-world performance?

A: The Arc A770 has 16 GB of GDDR6 with 512.0 GB/s bandwidth, while the Vega 48 has 8 GB of HBM2 with 402.4 GB/s. The Intel card offers double the capacity and 27.3% more bandwidth, which likely contributes to its higher benchmark scores in memory-intensive workloads.

Q: Which GPU supports ray tracing hardware?

A: Only the Intel Arc A770 includes 32 dedicated ray tracing cores. The AMD Radeon Pro Vega 48 has no ray tracing cores listed in its specifications, making the Arc A770 the only option for hardware-accelerated ray tracing.

Q: What are their DirectX API differences?

A: The Arc A770 supports DirectX 12 Ultimate (12_2), while the Vega 48 supports DirectX 12 (12_1). The newer 12_2 feature level includes capabilities like ray tracing and mesh shaders that the older 12_1 specification does not include.

Q: How do their process nodes affect their power and efficiency?

A: The Arc A770 uses a 6 nm TSMC process with 53.4 million transistors per mm², while the Vega 48 uses a 14 nm GlobalFoundries process with 25.3 million transistors per mm². The Arc A770's newer process allows for higher transistor density in a smaller die (406 mm² vs 495 mm²), though the Vega 48's TDP is not listed in the data.

Specification Differences

| Specification | Intel Arc A770 | AMD Radeon Pro Vega 48 |

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

| Architecture | Xe-HPG | GCN 5.0 |

| Process Node | 6 nm | 14 nm |

| Foundry | TSMC | GlobalFoundries |

| Transistors | 21,700 million | 12,500 million |

| Die Size | 406 mm² | 495 mm² |

| Transistor Density | 53.4M / mm² | 25.3M / mm² |

| Memory Size | 16 GB | 8 GB |

| Memory Type | GDDR6 | HBM2 |

| Memory Bus Width | 256 bit | 2048 bit |

| Memory Bandwidth | 512.0 GB/s | 402.4 GB/s |

| Shading Units | 4096 | 3072 |

| TMUs | 256 | 192 |

| ROPs | 128 | 64 |

| RT Cores | 32 | None |

| Pixel Rate | 307.2 GPixel/s | 76.80 GPixel/s |

| Texture Rate | 614.4 GTexel/s | 230.4 GTexel/s |

| FP32 Performance | 19.66 TFLOPS | 7.373 TFLOPS |

| FP16 Performance | 39.32 TFLOPS (2:1) | 14.75 TFLOPS (2:1) |

| TDP | 225 W | Not listed |

| Slot Width | Dual-slot | IGP |

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

| Suggested PSU | 550 W | Not listed |

| Bus Interface | PCIe 4.0 x16 | PCIe 3.0 x16 |

| DirectX Support | 12 Ultimate (12_2) | 12 (12_1) |

| Vulkan Support | 1.4 | 1.3 |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 2.0 | Portable Device Dependent |

The Verdict

The Intel Arc A770 is the clear performance leader based on every direct comparison in the dataset. Its 103.1% OpenCL advantage and 63.5% Vulkan advantage over the Vega 48 make it the superior choice for compute-heavy workloads, modern gaming with ray tracing, and any application that leverages DirectX 12 Ultimate features. The 16 GB memory capacity, 512.0 GB/s bandwidth, and 19.66 TFLOPS FP32 performance position it as a versatile GPU for both professional and enthusiast use. Its 90th percentile ranking among all GPUs and 14.4% higher average benchmark score reinforce this conclusion.

The AMD Radeon Pro Vega 48, despite its losses, serves a specific niche. Its best performance comes in the Metal API, where it scores 69,010—a result that suggests macOS-optimized workflows may see relatively better performance from this card than its OpenCL or Vulkan scores indicate. However, its 8 GB memory capacity, older GCN architecture, and lack of ray tracing hardware limit its relevance for modern workloads. Its 88th percentile ranking places it slightly below the Arc A770, and its average score of 60,140 trails by a meaningful margin.

Users should choose the Intel Arc A770 for any workload involving OpenCL compute, Vulkan rendering, ray tracing, or modern DirectX 12 applications. The Vega 48 only makes sense for users specifically targeting Metal-based environments on Apple platforms, where its 69,010 Metal score represents its only competitive benchmark result. For all other use cases, the data unambiguously favors the Arc A770.