AMD Radeon Pro W6600M vs AMD Radeon PRO W7900 Comparison

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon PRO W7900 records an average benchmark score of 110,725, while the AMD Radeon Pro W6600M records 61,896. The W7900 sits in the 94th percentile of all GPUs, compared to the 89th percentile for the W6600M.

Q: How large is the performance gap in the OpenCL benchmark?

A: The W7900 scores 84,379 in Geekbench OpenCL, while the W6600M scores 56,140. This gives the W7900 a 50.3% lead in that specific test.

Q: What is the difference in memory capacity and bandwidth?

A: The W7900 offers 48 GB of GDDR6 memory on a 384-bit bus with 864.0 GB/s bandwidth. The W6600M has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

Q: Are both GPUs based on the same architecture?

A: No. The W7900 uses RDNA 3.0 (chip Navi 31, codename Plum Bonito), while the W6600M uses RDNA 2.0 (chip Navi 23). Both are manufactured by TSMC, but on different process nodes: 5 nm for the W7900 and 7 nm for the W6600M.

Q: What are the TDP and power connector requirements?

A: The W7900 has a TDP of 295 W and requires two 8-pin power connectors with a suggested 600 W power supply. The W6600M has a TDP of 90 W and uses no power connectors, as it is an integrated GPU (IGP) for mobile systems.

Q: Which GPU has the higher boost clock?

A: The W7900 boosts to 2495 MHz, while the W6600M boosts to 2034 MHz. The base clocks are 1760 MHz and 1224 MHz, respectively.

Where Each One Wins

The data is unambiguous: the AMD Radeon PRO W7900 wins both recorded benchmarks outright. It holds a 50.3% advantage in Geekbench OpenCL and a 102.6% advantage in Geekbench Vulkan. There is no benchmark in the database where the W6600M comes out ahead.

The W7900 is the clear choice for compute-heavy workloads. Its 61.32 TFLOPS FP32 performance versus 7.290 TFLOPS for the W6600M means the desktop card delivers more than 8 times the raw single-precision throughput. The texture rate of 958.1 GTexel/s versus 227.8 GTexel/s further cements its dominance in tasks that saturate texture units.

The W6600M, by contrast, wins only in portability and power envelope. As an IGP with no separate power connectors and a 90 W TDP, it fits into mobile workstations where the W7900's triple-slot, 295 W design would be physically impossible. The W6600M is end-of-life per the database, while the W7900 remains active in production.

For any use case where performance is the primary metric, the W7900 is the only option between these two. The W6600M's niche is strictly limited to systems requiring integrated graphics in a laptop form factor.

Architecture Differences

The two GPUs come from different architectural generations. The W7900 is built on RDNA 3.0 with the Navi 31 chip, codenamed Plum Bonito. The W6600M uses RDNA 2.0 with the Navi 23 chip. This generation gap explains most of the performance disparity.

The manufacturing process differs as well. The W7900 uses TSMC's 5 nm node, while the W6600M uses the older 7 nm node. Transistor counts reflect this: the W7900 packs 57,700 million transistors on a 529 mm² die, giving a density of 109.1M transistors per mm². The W6600M has 11,060 million transistors on a 237 mm² die, for a density of 46.7M per mm². The W7900 is both physically larger and significantly denser.

Compute resources scale accordingly. The W7900 has 6144 shading units, 384 TMUs, 192 ROPs, and 96 ray tracing cores. The W6600M has 1792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores. Each of these counts is roughly 3 to 3.4 times higher on the W7900.

Memory architecture also differs fundamentally. The W7900 uses a 384-bit bus with 48 GB GDDR6, while the W6600M uses a 128-bit bus with 8 GB. The W7900's FP16 throughput is 61.32 TFLOPS at a 1:1 ratio with FP32, whereas the W6600M achieves 14.58 TFLOPS FP16 at a 2:1 ratio. This means the W7900 can process FP16 at full FP32 rate, while the W6600M halves its FP32 rate to reach its FP16 peak.

Both share the same API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The W7900 outputs via 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1, while the W6600M's display outputs are portable device dependent.

Specification Differences

| Specification | AMD Radeon PRO W7900 | AMD Radeon Pro W6600M |

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

| Architecture | RDNA 3.0 | RDNA 2.0 |

| Process Node | 5 nm | 7 nm |

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

| Die Size | 529 mm² | 237 mm² |

| Base Clock | 1760 MHz | 1224 MHz |

| Boost Clock | 2495 MHz | 2034 MHz |

| Memory Size | 48 GB | 8 GB |

| Memory Bus Width | 384 bit | 128 bit |

| Memory Bandwidth | 864.0 GB/s | 224.0 GB/s |

| Shading Units | 6144 | 1792 |

| TMUs | 384 | 112 |

| ROPs | 192 | 64 |

| Ray Tracing Cores | 96 | 28 |

| Pixel Rate | 479.0 GPixel/s | 130.2 GPixel/s |

| Texture Rate | 958.1 GTexel/s | 227.8 GTexel/s |

| FP32 | 61.32 TFLOPS | 7.290 TFLOPS |

| FP16 | 61.32 TFLOPS (1:1) | 14.58 TFLOPS (2:1) |

| TDP | 295 W | 90 W |

| Slot Width | Triple-slot | IGP |

| Power Connectors | 2x 8-pin | None |

| Suggested PSU | 600 W | None |

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

| Release Date | 2023-05-25 | 2021-06-07 |

The W7900 is a desktop card measuring 280 mm in length, 110 mm in height, and 51 mm in width. The W6600M has no recorded dimensions, consistent with its mobile IGP design. The W7900 launched with an MSRP of 3,999 USD; the W6600M has no launch MSRP recorded.

Head-to-Head Benchmarks

The database records two direct comparisons between these GPUs, and the W7900 wins both decisively.

In Geekbench OpenCL, the W7900 scores 84,379 against the W6600M's 56,140. That is a 50.3% delta, meaning the W7900 delivers roughly half again as much performance in this compute workload. The OpenCL test typically stresses raw shading throughput and memory bandwidth, both areas where the W7900's specifications dominate: 6144 shading units versus 1792, and 864 GB/s versus 224 GB/s.

The Vulkan result is even more lopsided. The W7900 scores 137,070, while the W6600M manages 67,652. The delta of 102.6% means the W7900 more than doubles the W6600M's performance in this graphics API. Vulkan workloads often benefit from ray tracing and geometry throughput, where the W7900's 96 RT cores and 384 TMUs dwarf the W6600M's 28 RT cores and 112 TMUs.

Context from the nearest rivals further clarifies these scores. The W7900's average of 110,725 sits within 1% of the AMD Radeon Pro Vega II (109,617), within 3.2% of the AMD Radeon Pro W6600X (107,342), and trails the NVIDIA RTX A5500 Mobile (113,944) by 2.8% and the NVIDIA Tesla V100 SXM2 16 GB (114,395) by 3.2%. The W6600M's average of 61,896 is nearly identical to the AMD Radeon 8050S (62,108, delta -0.3%), marginally ahead of the NVIDIA GeForce RTX 4090 (60,347, delta 2.6%) and the Intel Arc Pro A60 (60,326, delta 2.6%), and 2.9% ahead of the AMD Radeon Pro Vega 48 (60,140).

In short, the W7900 competes at the top tier of workstation GPUs, while the W6600M sits in a much lower performance bracket. The head-to-head deltas of 50.3% and 102.6% are consistent with the 44.2 TFLOPS difference in FP32 throughput and the 640 GB/s difference in memory bandwidth.

The Verdict

The AMD Radeon PRO W7900 is the overwhelmingly faster GPU. It wins both recorded benchmarks by margins of 50.3% and 102.6%, holds a higher percentile ranking (94 versus 89), and offers more than 8 times the FP32 throughput. For any desktop workstation task that demands compute performance, the W7900 is the clear pick.

The AMD Radeon Pro W6600M should be selected only for mobile systems where the W7900 cannot physically fit. Its 90 W TDP, IGP slot width, and lack of power connectors make it suitable for laptops, but the performance cost is severe. The W6600M is also end-of-life in the database, whereas the W7900 remains active.

Users prioritizing raw performance, memory capacity (48 GB versus 8 GB), or bandwidth (864 GB/s versus 224 GB/s) should choose the W7900 without hesitation. Users prioritizing a low-power integrated solution for portable workstations have only the W6600M as an option between these two. The data shows no scenario where the W6600M outperforms the W7900 in any recorded benchmark.