AMD Radeon PRO W6600 vs AMD Radeon RX 7900M Comparison

# AMD Radeon RX 7900M vs AMD Radeon PRO W6600

The AMD Radeon RX 7900M is the decisive winner in direct head-to-head benchmarks, beating the AMD Radeon PRO W6600 by 76.2% in OpenCL and more than doubling its Vulkan score. The RX 7900M's average benchmark score of 97,487 places it in the 94th percentile of all GPUs, while the PRO W6600 sits at 81,995 in the 92nd percentile — a 15.9% overall average score gap that understates how much faster the 7900M is in compute-heavy workloads. The PRO W6600 is an end-of-life professional card from 2021, while the RX 7900M is an active mobile part from 2023, so the generational gulf is expected, but the magnitude of the performance difference is striking.

Head-to-Head Benchmarks

The RX 7900M dominates every shared benchmark. In Geekbench OpenCL, the 7900M scores 129,499 against the PRO W6600's 73,514 — a 76.2% advantage. That is not a marginal win; it is a near-doubling of raw compute throughput. The gap is even wider in Geekbench Vulkan, where the 7900M hits 158,760 versus 78,428, a 102.4% delta — meaning the 7900M delivers more than twice the Vulkan performance of the PRO W6600.

The PRO W6600 has no benchmark wins against the 7900M in the head-to-head data. The only test where the PRO W6600 appears at all is Geekbench Metal, where it scores 94,042 — but no comparable Metal score exists for the RX 7900M, so this cannot be compared directly. The 7900M wins 2-0 in the head-to-head suite.

Looking at broader context, the 7900M's average benchmark score of 97,487 puts it 0.4% ahead of the AMD Radeon Pro VII (97,131) and 5.4% ahead of the AMD Radeon Instinct MI60 (92,466). It trails the NVIDIA Quadro RTX 6000 (101,872) by 4.3% but beats the NVIDIA RTX A4500 (91,671) by 6.3%. The PRO W6600's 81,995 average is 1.3% ahead of the AMD Radeon Pro Vega 64X (80,959) and 2.7% ahead of the NVIDIA GeForce RTX 5090 (79,842), but it is only 3% ahead of the NVIDIA Tesla P100 PCIe 16 GB (79,605). In short, the 7900M competes with workstation-class GPUs from a higher tier, while the PRO W6600 sits among mid-range professional cards.

Architecture Differences

The two GPUs come from different RDNA generations. The RX 7900M uses the Navi 31 chip on the RDNA 3.0 architecture, with the Plum Bonito codename, while the PRO W6600 uses the Navi 23 chip on RDNA 2.0. The manufacturing process differs as well: the 7900M is built on TSMC's 5 nm node, whereas the PRO W6600 uses TSMC's 7 nm node.

The transistor counts reflect the generational leap. The 7900M packs 57,700 million transistors on a 529 mm² die, giving a transistor density of 109.1 million per mm². The PRO W6600 has 11,060 million transistors on a 237 mm² die, at 46.7 million per mm². That is a 5.2x difference in raw transistor count and a 2.3x difference in density — the 7900M is not just bigger, it is more efficiently packed.

Clock speeds tell a different story. The PRO W6600 has a higher base clock (2,331 MHz vs 1,825 MHz) and a higher boost clock (2,580 MHz vs 2,090 MHz). The 7900M compensates with massively more execution resources: 4,608 shading units versus 1,792, 288 TMUs versus 112, and 192 ROPs versus 64. The ray tracing core count is 72 versus 28 — a 2.6x advantage. Neither card has tensor cores, and both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Memory architecture diverges sharply. The 7900M has 16 GB of GDDR6 on a 256-bit bus, delivering 576.0 GB/s of bandwidth. The PRO W6600 has 8 GB of GDDR6 on a 128-bit bus, yielding 224.0 GB/s. The 7900M's memory runs at 2,250 MHz (18 Gbps effective) versus 1,750 MHz (14 Gbps effective) on the PRO W6600. The 7900M also has a wider PCIe interface: PCIe 4.0 x16 versus PCIe 4.0 x8 on the PRO W6600.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 7900M scores 97,487 on average, which is 15.9% higher than the AMD Radeon PRO W6600's 81,995. The 7900M ranks in the 94th percentile of all GPUs, while the PRO W6600 ranks in the 92nd percentile.

Q: How much faster is the RX 7900M in Vulkan?

A: In Geekbench Vulkan, the RX 7900M scores 158,760 versus 78,428 for the PRO W6600 — a 102.4% advantage. The 7900M delivers over twice the Vulkan performance.

Q: Does the PRO W6600 win any benchmark against the RX 7900M?

A: No. In the head-to-head benchmarks, the RX 7900M wins 2-0. The PRO W6600 has a Geekbench Metal score of 94,042, but there is no comparable Metal score for the RX 7900M, so no direct comparison can be made.

Q: What are the memory capacities of each card?

A: The RX 7900M has 16 GB of GDDR6 on a 256-bit bus with 576.0 GB/s bandwidth. The PRO W6600 has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

Q: Which GPU has more ray tracing cores?

A: The RX 7900M has 72 ray tracing cores, compared to 28 on the PRO W6600. That is a 2.6x difference in RT core count.

Q: What is the production status of each card?

A: The RX 7900M is listed as Active production, while the PRO W6600 is End-of-life. The RX 7900M was released on October 18, 2023; the PRO W6600 was released on June 7, 2021.

Specification Differences

| Specification | AMD Radeon RX 7900M | AMD Radeon PRO W6600 |

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

| Architecture | RDNA 3.0 | RDNA 2.0 |

| Chip | Navi 31 | Navi 23 |

| Process Node | 5 nm | 7 nm |

| Transistors | 57,700 million | 11,060 million |

| Die Size | 529 mm² | 237 mm² |

| Transistor Density | 109.1M / mm² | 46.7M / mm² |

| Base Clock | 1,825 MHz | 2,331 MHz |

| Boost Clock | 2,090 MHz | 2,580 MHz |

| Memory Clock | 2,250 MHz (18 Gbps effective) | 1,750 MHz (14 Gbps effective) |

| Memory Size | 16 GB | 8 GB |

| Memory Bus | 256 bit | 128 bit |

| Memory Bandwidth | 576.0 GB/s | 224.0 GB/s |

| Shading Units | 4,608 | 1,792 |

| TMUs | 288 | 112 |

| ROPs | 192 | 64 |

| Ray Tracing Cores | 72 | 28 |

| Pixel Rate | 401.3 GPixel/s | 165.1 GPixel/s |

| Texture Rate | 601.9 GTexel/s | 289.0 GTexel/s |

| FP32 Performance | 38.52 TFLOPS | 9.247 TFLOPS |

| FP16 Performance | 77.05 TFLOPS (2:1) | 18.49 TFLOPS (2:1) |

| TDP | 180 W | 100 W |

| Slot Width | IGP | Single-slot |

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

| Suggested PSU | None listed | 300 W |

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

| Display Outputs | Portable Device Dependent | 4x DisplayPort 1.4a |

| Length | Not listed | 241 mm (9.5 inches) |

| Production Status | Active | End-of-life |

| Release Date | 2023-10-18 | 2021-06-07 |

| Predecessor | Polaris Mobile | Radeon Pro Vega |

| Launch MSRP | None listed | 649 USD |

The Verdict

The data is unambiguous: the AMD Radeon RX 7900M is the superior GPU by every measurable benchmark criterion. Its average benchmark score is 15.9% higher, its OpenCL score is 76.2% higher, and its Vulkan score is 102.4% higher than the PRO W6600. The 7900M also offers double the memory (16 GB vs 8 GB), more than double the memory bandwidth (576.0 GB/s vs 224.0 GB/s), and 4.2x the FP32 compute throughput (38.52 TFLOPS vs 9.247 TFLOPS).

The PRO W6600 is not without merit in specific contexts. It has higher clock speeds (2,580 MHz boost vs 2,090 MHz), a lower TDP (100 W vs 180 W), a single-slot form factor, and dedicated display outputs (4x DisplayPort 1.4a) with a 300 W suggested PSU. For a workstation requiring a compact, low-power card with professional display connectivity, the PRO W6600 fits a niche. But for raw performance, the RX 7900M wins decisively.

The PRO W6600's only comparable benchmark result is its Geekbench Metal score of 94,042, which is higher than the 7900M's OpenCL score of 129,499 — but that is an invalid cross-API comparison. Within the shared benchmarks, the 7900M wins both tests outright. The 7900M's percentile ranking (94th vs 92nd) and its rivalry with much higher-tier cards (NVIDIA Quadro RTX 6000, AMD Radeon Pro VII) confirm its class-leading position.

Where Each One Wins

AMD Radeon RX 7900M wins in raw compute and gaming-class workloads. It dominates in OpenCL (129,499 vs 73,514) and Vulkan (158,760 vs 78,428). Its 38.52 TFLOPS FP32 performance is 4.2x the PRO W6600's 9.247 TFLOPS, and its 601.9 GTexel/s texture rate is more than double the PRO W6600's 289.0 GTexel/s. The 16 GB memory capacity and 576.0 GB/s bandwidth make it suitable for large datasets and high-resolution textures. Its 72 ray tracing cores provide a 2.6x advantage in RT workloads. The 7900M's 94th percentile ranking and its competitive standing against the NVIDIA Quadro RTX 6000 (only 4.3% behind) place it in workstation-class territory despite its mobile IGP form factor.

AMD Radeon PRO W6600 wins in efficiency and professional form factor. It draws 100 W versus 180 W, a 44% reduction in TDP. It is a single-slot card with a 241 mm length and 4x DisplayPort 1.4a outputs, making it suitable for multi-display professional setups. Its 1x 6-pin power connector and 300 W suggested PSU mean it can slot into existing workstation power budgets without upgrade. Its higher boost clock (2,580 MHz) shows better per-clock efficiency on the older 7 nm node. The PRO W6600's 92nd percentile ranking is still strong, and it outperforms the NVIDIA GeForce RTX 5090 by 2.7% in average score — an unexpected result given the RTX 5090's consumer positioning.

The 7900M is the pick for performance-driven workloads — compute, rendering, or ray tracing — where the 2x Vulkan advantage and 76.2% OpenCL lead translate directly to faster completion times. The PRO W6600 is the pick for constrained environments — low-power slots, single-slot chassis, or multi-display professional workstations — where the 100 W TDP, single-slot design, and dedicated DisplayPort outputs are decisive. The data does not support choosing the PRO W6600 for raw speed, but its efficiency and form factor advantages are real.