AMD Radeon RX 6600M vs Intel Arc A350M Comparison

The Intel Arc A350M and AMD Radeon RX 6600M occupy very different tiers of the mobile graphics landscape, and the benchmark data reflects a decisive performance gap. The RX 6600M dominates in every head-to-head comparison, leveraging a substantially larger chip and more memory to establish a clear hierarchy. For a builder prioritizing raw frame rates and compute throughput, the AMD part is the obvious choice, while the Arc A350M’s appeal rests on its dramatically lower power envelope and compact implementation.

Where Each One Wins

The data is unambiguous: the AMD Radeon RX 6600M wins every single benchmark matchup recorded, taking 2 wins out of 2 head-to-head tests. The Intel Arc A350M does not secure a single victory in any comparative test. However, this does not mean the A350M lacks a purpose. Its 25 W thermal design power (TDP) versus the RX 6600M’s 100 W TDP makes it a fit for ultra-thin, fanless, or passively-cooled notebooks where sustained load power draw is more critical than peak performance. The A350M’s integrated form factor (IGP) and lack of power connectors suggest it is designed for solder-down, low-profile implementations.

The RX 6600M, by contrast, is a performance-first mobile part. Its higher base clock of 2068 MHz and boost clock of 2416 MHz, combined with a 128-bit memory bus and 8 GB of GDDR6, position it for 1080p gaming and compute workloads where memory capacity and bandwidth are limiting factors. The data shows it delivers over double the raw FP32 throughput (8.659 TFLOPS vs 3.379 TFLOPS) and nearly triple the pixel fill rate (154.6 GPixel/s vs 52.80 GPixel/s). In short, the RX 6600M wins on performance; the A350M wins only on efficiency and physical footprint.

Architecture Differences

These two GPUs represent fundamentally different design philosophies. The Intel Arc A350M is built on the Xe-HPG architecture, specifically the DG2-128 chip, fabricated on a 6 nm process at TSMC. It contains 7,200 million transistors on a 157 mm² die, yielding a transistor density of 45.9M per mm². The AMD Radeon RX 6600M uses the RDNA 2.0 architecture with the Navi 23 chip, produced on a 7 nm process, also at TSMC. It packs 11,060 million transistors into a 237 mm² die, with a slightly higher density of 46.7M per mm².

The execution resources diverge sharply. The A350M has 768 shading units, 48 texture mapping units (TMUs), and 24 raster operation units (ROPs), alongside 6 ray tracing cores. The RX 6600M more than doubles these counts: 1792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API-level feature parity exists. However, the AMD part’s larger resource pool directly translates into its higher texture rate (270.6 GTexel/s vs 105.6 GTexel/s) and pixel rate.

Memory architecture is another key differentiator. The A350M uses a 64-bit bus with 4 GB of GDDR6, providing 112.0 GB/s of bandwidth. The RX 6600M doubles the bus width to 128-bit and doubles the capacity to 8 GB, resulting in exactly double the bandwidth at 224.0 GB/s. Both operate at the same effective memory speed of 14 Gbps. The A350M’s smaller memory footprint is a clear limitation for modern game textures and large datasets, while the RX 6600M’s 8 GB buffer is more future-proof.

Head-to-Head Benchmarks

The two head-to-head results available are decisive. In Geekbench OpenCL, the AMD Radeon RX 6600M scores 67765 against the Intel Arc A350M’s 24546. This represents a 63.8% advantage for the AMD part. In Geekbench Vulkan, the gap is even wider: the RX 6600M scores 73740 versus the A350M’s 24747, a 66.4% lead. These deltas are massive, indicating that the RX 6600M delivers roughly 2.7 to 3.0 times the compute performance in these synthetic loads.

Looking at the broader benchmark context, the A350M’s average benchmark score is 24647, while the RX 6600M’s is 23273. This is an interesting inversion: despite losing the head-to-head tests, the RX 6600M’s average score is lower because its benchmark suite includes more diverse tests like PassMark 3DMark variants and Geekbench Metal, which pull its average down. The A350M only ran two Geekbench tests, both of which are relatively high for its class. This highlights the importance of test methodology when comparing parts.

The percentile rankings tell a similar story. The A350M sits at the 70th percentile of all GPUs, while the RX 6600M is at the 68th percentile. Despite the RX 6600M’s crushing head-to-head wins, its broader test suite includes workloads where it scores lower relative to its peak, whereas the A350M’s limited test set is more uniformly favorable. The nearest rivals for the A350M include the AMD Radeon RX 590 (delta -0.4%) and NVIDIA RTX A5000 Mobile (delta -0.5%), showing it is competitive with those older or mobile-specific parts. The RX 6600M’s nearest rivals are the AMD Radeon R9 M290X (delta 0%) and AMD Radeon Pro Vega 16 (delta 0.1%), indicating its average score is closely matched to those parts despite vastly different architectures.

Specification Differences

| Specification | Intel Arc A350M | AMD Radeon RX 6600M |

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

| Architecture | Xe-HPG | RDNA 2.0 |

| Process Node | 6 nm | 7 nm |

| Transistors | 7,200 million | 11,060 million |

| Die Size | 157 mm² | 237 mm² |

| Transistor Density | 45.9M / mm² | 46.7M / mm² |

| Base Clock | 1150 MHz | 2068 MHz |

| Boost Clock | 2200 MHz | 2416 MHz |

| Game Clock | N/A | 2177 MHz |

| Memory Size | 4 GB | 8 GB |

| Memory Bus Width | 64 bit | 128 bit |

| Memory Bandwidth | 112.0 GB/s | 224.0 GB/s |

| Shading Units | 768 | 1792 |

| TMUs | 48 | 112 |

| ROPs | 24 | 64 |

| Ray Tracing Cores | 6 | 28 |

| Pixel Rate | 52.80 GPixel/s | 154.6 GPixel/s |

| Texture Rate | 105.6 GTexel/s | 270.6 GTexel/s |

| FP32 Performance | 3.379 TFLOPS | 8.659 TFLOPS |

| FP16 Performance | 6.758 TFLOPS (2:1) | 17.32 TFLOPS (2:1) |

| TDP | 25 W | 100 W |

| Power Connectors | None | None |

| Release Date | 2022-03-29 | 2021-05-30 |

| Predecessor | N/A | Polaris Mobile |

FAQ

Q: Which GPU has higher raw compute performance?

A: The AMD Radeon RX 6600M is vastly superior, delivering 8.659 TFLOPS of FP32 performance versus the Intel Arc A350M’s 3.379 TFLOPS. Its FP16 output of 17.32 TFLOPS also crushes the A350M’s 6.758 TFLOPS.

Q: How much memory bandwidth difference is there?

A: The RX 6600M provides exactly double the bandwidth at 224.0 GB/s, thanks to a 128-bit bus, compared to the A350M’s 64-bit bus and 112.0 GB/s. Both use GDDR6 at 14 Gbps effective.

Q: Is the Intel Arc A350M more power efficient?

A: Yes, significantly. The A350M has a 25 W TDP while the RX 6600M has a 100 W TDP. This makes the A350M suitable for low-power, compact designs, but that efficiency comes at a massive performance cost.

Q: Which GPU has more video memory?

A: The AMD Radeon RX 6600M has 8 GB of GDDR6, double the 4 GB found on the Intel Arc A350M. This is critical for modern games at high resolutions or with high-resolution texture packs.

Q: How do their benchmark averages compare?

A: The A350M has a higher average benchmark score of 24647 compared to the RX 6600M’s 23273. However, this is misleading because the RX 6600M ran a much larger suite of tests, including PassMark and Metal benchmarks, which lowered its average despite winning every head-to-head test.

Q: What are the nearest rivals for each GPU?

A: The A350M’s nearest rival is the AMD Radeon RX 590 (delta -0.4%), while the RX 6600M’s nearest rival is the AMD Radeon R9 M290X (delta 0%). These are based on average benchmark scores, not raw compute specifications.

The Verdict

The data dictates a clear choice for performance-oriented users: the AMD Radeon RX 6600M is the superior GPU in every measurable head-to-head test. It delivers a 63.8% higher OpenCL score and a 66.4% higher Vulkan score than the Intel Arc A350M. With double the memory, double the bandwidth, and over 2.5 times the FP32 throughput, the RX 6600M is the only sensible option for gaming, 3D rendering, or compute workloads where performance matters.

The Intel Arc A350M’s only tangible advantage is its 25 W TDP, which is a quarter of the RX 6600M’s 100 W TDP. This makes it viable for passively cooled ultraportables or systems with strict thermal budgets. However, its 4 GB memory and 64-bit bus are severe bottlenecks even for modest workloads, and its benchmark performance places it in the same class as older desktop parts like the RX 590 rather than modern mobile gaming GPUs.

For a builder prioritizing frame rates and future-proofing, the RX 6600M is the clear winner. For a builder prioritizing battery life and minimal heat output above all else, the A350M has a niche. But given the data, the RX 6600M’s performance lead is so substantial that the A350M should only be considered for the most power-constrained designs.