AMD Radeon RX 6600 vs Intel Arc A770M Comparison

Head-to-Head Benchmarks

The benchmark data splits these two GPUs into distinct performance profiles, with the AMD Radeon RX 6600 taking 6 of the 10 head-to-head tests while the Intel Arc A770M wins 4. The most dramatic margin belongs to Intel in the Geekbench OpenCL compute test, where the Arc A770M scores 89,494 against AMD's 28,850 — a 67.8% advantage. That is the single largest delta in the entire comparison, and it sets the tone for a GPU that is clearly built for compute-heavy workloads rather than legacy rasterization.

The AMD Radeon RX 6600 counters with its own blowout in the Passmark DirectX 11 test, winning 152 to 69, a 120.3% lead. This is not a small edge; it is a doubling of the score. Similarly, in Passmark DirectX 10, AMD leads 95 to 56, a 69.6% advantage. These legacy API results suggest the RDNA 2.0 architecture retains strong drivers and hardware paths for older DirectX titles, where the Intel Xe-HPG design appears to lag significantly.

In modern DirectX 12 scenarios, the tables turn. The 3DMark Steel Nomad DX12 test shows Intel winning 2,278 to 1,492, a 34.5% lead. The Passmark DirectX 12 result is closer but still favors Intel: 70 to 51, a 27.1% advantage. The Intel Arc A770M also wins the Geekbench Vulkan test, posting 74,422 versus 67,623, a 9.1% margin. This pattern — Intel strong on modern APIs, AMD dominant on legacy ones — is the central narrative of this comparison.

The remaining wins for AMD are in the 2D and general 3D categories. Passmark G3D shows AMD ahead 15,096 to 11,774, a 28.2% lead. Passmark G2D is closer, with AMD at 889 versus Intel's 711, a 25% margin. Passmark GPU Compute also favors AMD, 6,554 to 4,778, a 37.2% advantage. The Passmark DirectX 9 result is the narrowest AMD win: 197 to 178, just 10.7% apart.

Averaging all benchmarks, the AMD part scores 19,036 against Intel's 18,383 — a 3.5% overall gap. The AMD Radeon RX 6600 sits at the 63rd percentile of all GPUs, while the Intel Arc A770M is at the 62nd. These are statistically adjacent positions, but the underlying test distribution could not be more different. Intel wins big where it wins, and AMD wins big where it wins, with very little overlap in the middle.

Where Each One Wins

The AMD Radeon RX 6600 is the stronger choice for any workload that relies on older DirectX versions or general-purpose 2D and 3D rendering. Its 120.3% lead in Passmark DirectX 11 and 69.6% lead in DirectX 10 make it the clear pick for legacy game libraries or compatibility testing. The 28.2% advantage in Passmark G3D and 37.2% in Passmark GPU Compute further cement its position as a more rounded performer in traditional rasterization and compute tasks.

The Intel Arc A770M, by contrast, is purpose-built for modern API compute. The 67.8% lead in Geekbench OpenCL is the standout result — this is a GPU that excels in raw parallel compute workloads such as rendering, physics simulation, or data processing that leverage OpenCL. The 34.5% lead in 3DMark Steel Nomad DX12 and the 27.1% win in Passmark DirectX 12 indicate that Intel's architecture is well-tuned for current-generation DirectX 12 titles and future-oriented benchmarks. The 9.1% Vulkan advantage also suggests strong performance in Vulkan-based games and applications.

For users running a mix of old and new software, the AMD card offers better consistency across the board. Its wins are more numerous and its losses are smaller in relative terms — the worst Intel win against it is 34.5%, while the worst AMD win against Intel is 120.3%. That asymmetry matters. The Intel card wins big in compute and modern API tests, but loses badly in legacy scenarios. The AMD card wins more tests overall, and its losses are less severe.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. The AMD Radeon RX 6600 uses the Navi 23 chip built on RDNA 2.0 architecture, fabricated on a 7 nm TSMC process. It packs 11,060 million transistors into a 237 mm² die, yielding a transistor density of 46.7 million per square millimeter. The Intel Arc A770M uses the DG2-512 chip on Xe-HPG architecture, fabricated on a 6 nm TSMC process. It contains 21,700 million transistors on a 406 mm² die, with a density of 53.4 million per square millimeter. Intel's design is nearly double the transistor count and 171 mm² larger, reflecting a much more complex chip.

Memory is another major divergence. The AMD card ships with 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s of bandwidth. The Intel card doubles both capacity and bus width: 16 GB of GDDR6 on a 256-bit bus, achieving 512.0 GB/s — more than twice the bandwidth. This makes the Intel part substantially better equipped for large data sets and high-resolution textures.

The compute resources tell a similar story. The Intel Arc A770M has 4,096 shading units, 256 texture mapping units, and 128 ROPs, compared to AMD's 1,792 shading units, 112 TMUs, and 64 ROPs. Intel also has 32 ray tracing cores versus AMD's 28. In raw throughput, Intel's FP32 performance is 16.79 TFLOPS against AMD's 8.928 TFLOPS, and FP16 is 33.59 TFLOPS versus 17.86 TFLOPS. The pixel rate is 262.4 GPixel/s for Intel versus 159.4 GPixel/s for AMD, and texture rate is 524.8 GTexel/s versus 279.0 GTexel/s.

Clock speeds, however, favor AMD. The RX 6600 has a base clock of 1626 MHz and a boost of 2491 MHz, while the Arc A770M runs at 1650 MHz base and 2050 MHz boost. AMD's higher boost clock partially compensates for its smaller compute footprint. Power draw also differs: AMD lists a 132 W TDP, Intel is lower at 120 W, though Intel's card is an IGP (integrated GPU) with no discrete slot width or power connectors, indicating it is designed for mobile integration.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 6600 averages 19,036 across all benchmarks, while the Intel Arc A770M averages 18,383. AMD also holds a higher percentile rank at 63 versus Intel's 62.

Q: What is the largest performance gap in the head-to-head tests?

A: The largest gap is in Geekbench OpenCL, where the Intel Arc A770M scores 89,494 against the AMD Radeon RX 6600's 28,850, a 67.8% difference in Intel's favor.

Q: How do the two cards compare in legacy DirectX performance?

A: AMD dominates legacy APIs. In Passmark DirectX 11, the RX 6600 leads 152 to 69, a 120.3% advantage. In DirectX 10, AMD wins 95 to 56, a 69.6% lead, and in DirectX 9, AMD edges ahead 197 to 178, a 10.7% margin.

Q: Which card has more memory bandwidth?

A: The Intel Arc A770M has 512.0 GB/s of bandwidth from its 256-bit bus and 16 GB of GDDR6. The AMD Radeon RX 6600 offers 224.0 GB/s from a 128-bit bus and 8 GB of GDDR6.

Q: What are the transistor counts for each GPU?

A: The Intel Arc A770M contains 21,700 million transistors on its DG2-512 chip. The AMD Radeon RX 6600 has 11,060 million transistors on its Navi 23 chip.

Q: Which GPU wins in the 3DMark Steel Nomad DX12 test?

A: The Intel Arc A770M wins decisively, scoring 2,278 versus the AMD Radeon RX 6600's 1,492, a 34.5% lead.

Specification Differences

| Specification | AMD Radeon RX 6600 | Intel Arc A770M |

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

| Chip | Navi 23 | DG2-512 |

| Architecture | RDNA 2.0 | Xe-HPG |

| Process Node | 7 nm | 6 nm |

| Transistors | 11,060 million | 21,700 million |

| Die Size | 237 mm² | 406 mm² |

| Transistor Density | 46.7M / mm² | 53.4M / mm² |

| Base Clock | 1626 MHz | 1650 MHz |

| Boost Clock | 2491 MHz | 2050 MHz |

| Game Clock | 2044 MHz | N/A |

| Memory Clock | 1750 MHz (14 Gbps effective) | 2000 MHz (16 Gbps effective) |

| Memory Size | 8 GB | 16 GB |

| Memory Bus Width | 128 bit | 256 bit |

| Memory Bandwidth | 224.0 GB/s | 512.0 GB/s |

| Shading Units | 1792 | 4096 |

| TMUs | 112 | 256 |

| ROPs | 64 | 128 |

| Ray Tracing Cores | 28 | 32 |

| Pixel Rate | 159.4 GPixel/s | 262.4 GPixel/s |

| Texture Rate | 279.0 GTexel/s | 524.8 GTexel/s |

| FP32 Performance | 8.928 TFLOPS | 16.79 TFLOPS |

| FP16 Performance | 17.86 TFLOPS (2:1) | 33.59 TFLOPS (2:1) |

| TDP | 132 W | 120 W |

| Slot Width | Dual-slot | IGP |

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

| Suggested PSU | 300 W | None |

| Bus Interface | PCIe 4.0 x8 | PCIe 4.0 x16 |

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | Portable Device Dependent |

| Release Date | 2021-10-12 | N/A |

| Launch MSRP | 329 USD | N/A |