AMD Radeon Pro Vega 64X vs Intel Arc A770 Comparison

Head-to-Head Benchmarks

The benchmark data presents a single direct comparison between these two GPUs, and the result is decisive. In the Geekbench OpenCL test, the Intel Arc A770 scores 109,175, while the AMD Radeon Pro Vega 64X scores 78,467. This gives Intel a 28.1% advantage, a substantial margin that reflects a generational leap in compute throughput. For context, the AMD card's average benchmark score across all tests is 80,959, while the Intel card's average is 68,809 — yet in the one shared test, Intel wins decisively. This discrepancy highlights how the OpenCL workload particularly favors the Arc A770's architecture.

The AMD Radeon Pro Vega 64X does have a higher overall percentile ranking, sitting at the 92nd percentile versus the Intel Arc A770's 90th percentile. However, this ranking is derived from different benchmark suites — the AMD card's results come from Geekbench Metal and OpenCL, while Intel's include 3DMark Steel Nomad DX12, OpenCL, and Vulkan. The single head-to-head test shows Intel's raw OpenCL compute advantage, but the AMD card's higher percentile suggests its Metal performance (83,450) is exceptionally strong in its target ecosystem.

Looking at nearest rivals provides additional context. The AMD Radeon Pro Vega 64X's average score of 80,959 places it 1.3% behind the Radeon PRO W6600 (81,995) and 1.4% ahead of the GeForce RTX 5090 (79,842). The Intel Arc A770's average of 68,809 is 0.3% behind the NVIDIA CMP 90HX (69,000) and 1.5% behind the Radeon Pro WX 8200 (69,870). These adjacent rankings show that both cards sit in a competitive mid-to-high tier, but the Intel card's OpenCL peak is notably higher than its average suggests.

The deltaPct values in the head-to-head result are unequivocal. Intel wins the only shared benchmark, and the margin is not marginal — it is a 28.1% gap. For a workload that relies heavily on OpenCL compute, the Arc A770 is the clear choice. However, the AMD card's higher percentile ranking and its strong Metal score (83,450) indicate that its strengths may lie in different API ecosystems that are not directly compared here.

Architecture Differences

The two GPUs come from fundamentally different architectural generations and design philosophies. The AMD Radeon Pro Vega 64X is built on GCN 5.0 architecture, manufactured on a 14 nm process at GlobalFoundries. It packs 12,500 million transistors into a 495 mm² die, yielding a transistor density of 25.3 million per square millimeter. In contrast, the Intel Arc A770 uses Xe-HPG architecture, produced on TSMC's 6 nm process, with 21,700 million transistors in a smaller 406 mm² die, achieving a much higher density of 53.4 million per square millimeter. This density difference is stark — Intel crams nearly twice the transistors per area into a smaller physical footprint.

Memory configurations present another key divergence. Both cards offer 16 GB of memory and identical 512.0 GB/s bandwidth, but the underlying technology differs completely. The AMD card uses HBM2 with a 2048-bit bus and a memory clock of 1000 MHz (2 Gbps effective). The Intel card uses GDDR6 on a 256-bit bus with a 2000 MHz clock (16 Gbps effective). The narrower bus on the Intel side is compensated by the higher effective memory speed, achieving the same bandwidth figure. This is a classic trade-off between HBM's wide-but-slow approach and GDDR6's narrow-but-fast design.

Compute resources show both similarities and differences. Both GPUs have 4,096 shading units and 256 texture mapping units. However, the AMD card has 64 ROPs, while the Intel card has 128 ROPs — double the pixel output capability. This translates directly to pixel rate: the Intel card achieves 307.2 GPixel/s versus the AMD card's 93.95 GPixel/s, a 3.27x difference. Texture rate follows a similar pattern: Intel's 614.4 GTexel/s versus AMD's 375.8 GTexel/s. The Intel card also includes 32 dedicated ray tracing cores, while the AMD card has none listed.

Clock speeds tell another story. The AMD card runs at a 1250 MHz base and 1468 MHz boost, while the Intel card runs at 2100 MHz base and 2400 MHz boost. The Intel card's higher clocks, combined with its architectural efficiency, produce 19.66 TFLOPS of FP32 compute versus the AMD card's 12.03 TFLOPS — a 63% advantage. FP16 performance follows the same 2:1 ratio on both cards, with Intel at 39.32 TFLOPS and AMD at 24.05 TFLOPS.

Power and interface specifications also differ meaningfully. The AMD card has a 250 W TDP and uses an integrated form factor (IGP) with no power connectors, while the Intel card has a 225 W TDP, a dual-slot design, and requires a 6-pin and 8-pin power connection with a suggested 550 W PSU. The Intel card supports PCIe 4.0 x16, while the AMD card is limited to PCIe 3.0 x16. API support shows Intel's newer pedigree: DirectX 12 Ultimate (12_2) versus AMD's DirectX 12 (12_1), and Vulkan 1.4 versus 1.3. Both support OpenGL 4.6.

Where Each One Wins

The Intel Arc A770 wins decisively in raw compute benchmarks, particularly in OpenCL where it leads by 28.1%. Its higher FP32 throughput (19.66 TFLOPS vs 12.03 TFLOPS) suggests it will excel in general-purpose compute workloads, rendering tasks that leverage DX12 Ultimate features, and any application utilizing ray tracing — a feature entirely absent from the AMD card. The Intel card's 128 ROPs and 307.2 GPixel/s pixel rate indicate a strong advantage in fill-rate-bound scenarios, such as high-resolution rasterization with heavy post-processing effects. Its 2400 MHz boost clock and 19.66 TFLOPS FP32 figure make it the more capable card for modern gaming workloads that rely on DX12 and Vulkan.

The AMD Radeon Pro Vega 64X, despite losing the single head-to-head test, holds a higher percentile ranking (92nd vs 90th) and demonstrates strong performance in Apple's Metal API with a score of 83,450. Its 512.0 GB/s bandwidth over a 2048-bit HBM2 bus provides a different memory access pattern that may benefit certain scientific or professional compute workloads. The card's end-of-life status and 2019 release date mean it is a mature product with established driver support, while the Intel card, released in 2022, is newer but also end-of-life. The AMD card's integrated form factor and lack of power connectors make it suitable for systems where discrete power delivery is unavailable.

For users prioritizing OpenCL compute performance, the Intel card is the unambiguous choice. For those working in Metal-centric environments or needing a card that fits an integrated form factor, the AMD card holds appeal. The Intel card's 3DMark Steel Nomad DX12 score of 2,969, while not directly comparable to the AMD's benchmark suite, indicates its gaming-oriented design. The AMD card's average benchmark score of 80,959 is higher than Intel's 68,809, but this aggregation includes different tests — the Intel card's OpenCL result is its strongest single score, while the AMD card's Metal result is its best.

FAQ

Q: Which GPU wins in the only directly comparable benchmark?

A: The Intel Arc A770 wins the Geekbench OpenCL test with a score of 109,175, which is 28.1% higher than the AMD Radeon Pro Vega 64X's score of 78,467.

Q: How do their memory subsystems compare?

A: Both cards have 16 GB of memory and 512.0 GB/s bandwidth. However, the AMD card uses HBM2 on a 2048-bit bus, while the Intel card uses GDDR6 on a 256-bit bus with a faster effective clock of 16 Gbps.

Q: Does the AMD card have any ray tracing capability?

A: No. The AMD Radeon Pro Vega 64X has no ray tracing cores listed, while the Intel Arc A770 includes 32 dedicated ray tracing cores.

Q: What is the FP32 compute difference between the two?

A: The Intel Arc A770 delivers 19.66 TFLOPS of FP32 performance, which is 63% higher than the AMD Radeon Pro Vega 64X's 12.03 TFLOPS.

Q: Which card has a higher overall percentile ranking?

A: The AMD Radeon Pro Vega 64X ranks at the 92nd percentile of all GPUs, while the Intel Arc A770 ranks at the 90th percentile, despite the Intel card winning the only direct head-to-head benchmark.

Q: What are their power requirements?

A: The AMD card has a 250 W TDP and requires no power connectors due to its integrated form factor. The Intel card has a 225 W TDP and requires a 6-pin and 8-pin power connector, with a suggested 550 W power supply.

Specification Differences

| Specification | AMD Radeon Pro Vega 64X | Intel Arc A770 |

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

| Architecture | GCN 5.0 | Xe-HPG |

| Generation | Radeon Pro Mac (Vega Series) | Alchemist (Arc 7) |

| Process Node | 14 nm | 6 nm |

| Foundry | GlobalFoundries | TSMC |

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

| Die Size | 495 mm² | 406 mm² |

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

| Base Clock | 1250 MHz | 2100 MHz |

| Boost Clock | 1468 MHz | 2400 MHz |

| Memory Clock | 1000 MHz (2 Gbps effective) | 2000 MHz (16 Gbps effective) |

| Memory Type | HBM2 | GDDR6 |

| Memory Bus Width | 2048 bit | 256 bit |

| ROPs | 64 | 128 |

| RT Cores | None | 32 |

| Pixel Rate | 93.95 GPixel/s | 307.2 GPixel/s |

| Texture Rate | 375.8 GTexel/s | 614.4 GTexel/s |

| FP32 | 12.03 TFLOPS | 19.66 TFLOPS |

| FP16 | 24.05 TFLOPS (2:1) | 39.32 TFLOPS (2:1) |

| TDP | 250 W | 225 W |

| Slot Width | IGP | Dual-slot |

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

| Suggested PSU | None | 550 W |

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

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

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

| Vulkan | 1.3 | 1.4 |

| Release Date | 2019-03-18 | 2022-10-11 |

| Predecessor | None | Xe Graphics |

| Successor | None | Battlemage |

| Launch MSRP | None | 329 USD |