AMD Radeon Pro W6600M vs NVIDIA RTX A3000 Mobile Comparison

The NVIDIA RTX A3000 Mobile and AMD Radeon Pro W6600M split their two recorded benchmark wins, but the nature of those wins reveals a clear division of labor. The A3000 Mobile dominates OpenCL compute by a staggering 40.9%, while the W6600M counters with a 9.6% advantage in Vulkan performance. With the A3000 Mobile holding a 92-point higher average benchmark score (70140 vs 61896) and a 91st percentile ranking versus the W6600M's 89th, the data shows the NVIDIA part as the overall compute leader, but the AMD part as the more balanced mobile option for graphics-oriented workloads.

Where Each One Wins

The NVIDIA RTX A3000 Mobile is the undisputed compute champion in this pairing. Its geekbench_opencl score of 79091 dwarfs the AMD Radeon Pro W6600M's 56140, a 40.9% advantage that is not merely a lead but a rout. This OpenCL result aligns with the A3000's hardware design—its 4096 shading units and 128 tensor cores are built for parallel throughput, and the 10.08 TFLOPS FP32 rating reflects that. The A3000 also edges out its nearest rival, the NVIDIA Quadro P6000, by 0.2% in average score, and beats the AMD Radeon Pro WX 8200 by 0.4%, placing it in rarefied desktop-class territory even though it is a mobile chip.

The AMD Radeon Pro W6600M wins decisively on the Vulkan front. Its geekbench_vulkan score of 67652 outpaces the NVIDIA's 61189, a 9.6% margin. This is notable because Vulkan is the modern graphics API used in games and real-time visualization, and the W6600M's 14.58 TFLOPS FP16 throughput (at 2:1 ratio) gives it a distinct advantage in half-precision workloads that Vulkan applications often leverage. The W6600M also holds its own against its nearest rivals, sitting just 0.3% behind the AMD Radeon 8050S and 2.6% ahead of both the NVIDIA GeForce RTX 4090 and Intel Arc Pro A60 in average score—an impressive showing for a mobile Radeon Pro part.

The split is clean: OpenCL compute belongs to NVIDIA, Vulkan graphics belong to AMD. For users running CUDA-adjacent or OpenCL-heavy scientific workloads, the A3000 Mobile is the clear pick. For those prioritizing Vulkan-based rendering or game development, the W6600M delivers the better frame-level performance.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. The NVIDIA RTX A3000 Mobile uses the GA104 chip on the Ampere architecture, manufactured by Samsung on an 8 nm process. It packs 17,400 million transistors into a 392 mm² die, yielding a transistor density of 44.4M per mm². The AMD Radeon Pro W6600M uses the Navi 23 chip on RDNA 2.0, built by TSMC on a 7 nm node. It contains 11,060 million transistors on a smaller 237 mm² die, achieving a higher density of 46.7M per mm²—proof of the more advanced fabrication process.

Core counts diverge sharply. The A3000 Mobile has 4096 shading units, 128 TMUs, and 64 ROPs, plus 32 dedicated ray tracing cores and 128 tensor cores. The W6600M counters with 1792 shading units, 112 TMUs, and 64 ROPs, along with 28 ray tracing cores but no tensor cores whatsoever. Despite fewer shading units, the W6600M's higher clocks—1224 MHz base and 2034 MHz boost versus the A3000's 600 MHz base and 1230 MHz boost—allow it to achieve competitive pixel and texture rates. Indeed, the W6600M posts a 130.2 GPixel/s pixel rate versus the A3000's 78.72 GPixel/s, and a 227.8 GTexel/s texture rate versus 157.4 GTexel/s.

Memory configurations also differ. The A3000 Mobile has 6 GB of GDDR6 on a 192-bit bus, delivering 264.0 GB/s bandwidth. The W6600M offers 8 GB of GDDR6 on a 128-bit bus, but with faster 14 Gbps effective memory, it achieves 224.0 GB/s bandwidth. The NVIDIA part wins on raw bandwidth, but the AMD part wins on capacity—a trade-off that favors the A3000 for bandwidth-hungry compute and the W6600M for larger datasets. Power envelopes differ too: the A3000 Mobile is rated at 70 W TDP, while the W6600M draws 90 W, making the NVIDIA part more power-efficient per unit of compute.

Head-to-Head Benchmarks

The geekbench_opencl result is the single most decisive data point in this comparison. The NVIDIA RTX A3000 Mobile scored 79091 against the AMD Radeon Pro W6600M's 56140, a delta of 40.9% in NVIDIA's favor. This is not a marginal win; it is a generational gap. To contextualize, the A3000's average benchmark score of 70140 places it 0.2% ahead of the NVIDIA Quadro P6000 and 1.7% ahead of the NVIDIA CMP 90HX, while the W6600M's 61896 average sits 2.6% above the GeForce RTX 4090 and 2.9% above the Radeon Pro Vega 48. The OpenCL gap between the two mobile parts is larger than the gap between the A3000 and any of its desktop-class rivals.

The geekbench_vulkan result flips the script. The AMD Radeon Pro W6600M scored 67652, beating the NVIDIA RTX A3000 Mobile's 61189 by 9.6%. This is a substantial margin in a modern graphics API, and it suggests that the W6600M's architecture—with its higher boost clock and superior FP16 throughput—is better optimized for Vulkan's execution model. The W6600M's FP16 rate of 14.58 TFLOPS is exactly double its FP32 rate, reflecting a 2:1 ratio that AMD uses to accelerate half-precision shader work. NVIDIA's A3000 Mobile, by contrast, offers a 1:1 FP16 to FP32 ratio of 10.08 TFLOPS, which is more conservative but more consistent across precision levels.

The wins are evenly split at one apiece, but the magnitudes tell a deeper story. A 40.9% OpenCL lead is far more consequential than a 9.6% Vulkan lead, especially in professional workloads where OpenCL remains a common compute interface. The A3000 Mobile's average benchmark score of 70140 versus the W6600M's 61896—a 13.3% overall advantage—confirms that the NVIDIA part is the more powerful all-rounder, even if the AMD part has a specific Vulkan strength.

FAQ

Q: Which GPU has a higher average benchmark score?

A: The NVIDIA RTX A3000 Mobile leads with an average benchmark score of 70140, compared to the AMD Radeon Pro W6600M's 61896, a difference of roughly 13.3%.

Q: How large is the OpenCL performance gap?

A: The A3000 Mobile scores 79091 in geekbench_opencl versus 56140 for the W6600M, giving NVIDIA a 40.9% advantage in that specific test.

Q: Does the AMD card win any benchmark?

A: Yes, the W6600M wins geekbench_vulkan with a score of 67652 against the A3000 Mobile's 61189, a 9.6% margin for AMD.

Q: What are the memory capacity and bandwidth differences?

A: The A3000 Mobile has 6 GB of GDDR6 on a 192-bit bus with 264.0 GB/s bandwidth, while the W6600M has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

Q: Which GPU has more shading units?

A: The NVIDIA RTX A3000 Mobile has 4096 shading units, more than double the 1792 shading units on the AMD Radeon Pro W6600M.

Q: Do both GPUs support the same API level?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Specification Differences

| Specification | NVIDIA RTX A3000 Mobile | AMD Radeon Pro W6600M |

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

| Chip | GA104 | Navi 23 |

| Architecture | Ampere | RDNA 2.0 |

| Process Node | 8 nm | 7 nm |

| Foundry | Samsung | TSMC |

| Transistors | 17,400 million | 11,060 million |

| Die Size | 392 mm² | 237 mm² |

| Transistor Density | 44.4M / mm² | 46.7M / mm² |

| Base Clock | 600 MHz | 1224 MHz |

| Boost Clock | 1230 MHz | 2034 MHz |

| Memory Size | 6 GB | 8 GB |

| Memory Bus Width | 192 bit | 128 bit |

| Memory Bandwidth | 264.0 GB/s | 224.0 GB/s |

| Shading Units | 4096 | 1792 |

| TMUs | 128 | 112 |

| RT Cores | 32 | 28 |

| Tensor Cores | 128 | None |

| Pixel Rate | 78.72 GPixel/s | 130.2 GPixel/s |

| Texture Rate | 157.4 GTexel/s | 227.8 GTexel/s |

| FP32 Performance | 10.08 TFLOPS | 7.290 TFLOPS |

| FP16 Performance | 10.08 TFLOPS (1:1) | 14.58 TFLOPS (2:1) |

| TDP | 70 W | 90 W |

| Release Date | 2021-04-11 | 2021-06-07 |

The Verdict

The NVIDIA RTX A3000 Mobile is the superior compute engine. Its 40.9% OpenCL lead over the AMD Radeon Pro W6600M is the single largest performance gap in this comparison, and its 70 W TDP achieves this while drawing 20 W less power than the AMD part. The A3000's 4096 shading units, 128 tensor cores, and 264.0 GB/s bandwidth make it the obvious choice for scientific computing, machine learning inference, or any OpenCL-heavy professional workload. Its 91st percentile ranking versus the W6600M's 89th further confirms its higher standing in the overall GPU landscape.

The AMD Radeon Pro W6600M is the better graphics-oriented mobile solution. Its 9.6% Vulkan victory, higher boost clock of 2034 MHz, and superior pixel rate of 130.2 GPixel/s indicate that it handles real-time rendering tasks more efficiently. The 8 GB memory capacity—2 GB more than the A3000—provides more headroom for large textures or datasets, and the 14.58 TFLOPS FP16 throughput is a clear advantage for half-precision graphics work. The W6600M's 89th percentile ranking, while lower than NVIDIA's, is still respectable, and its performance relative to rivals like the GeForce RTX 4090 (2.6% ahead) shows it punches well above its mobile positioning.

The data-driven conclusion is straightforward: choose the NVIDIA RTX A3000 Mobile for raw compute throughput and energy efficiency; choose the AMD Radeon Pro W6600M for Vulkan graphics performance and memory capacity. The average benchmark score of 70140 versus 61896 favors NVIDIA overall, but the split wins indicate that neither card is universally superior. The A3000 Mobile wins the compute war, the W6600M wins the graphics battle, and the right pick depends entirely on which workload dominates your use case.