AMD Radeon PRO W7900 vs AMD Radeon RX 6650M Comparison

Where Each One Wins

The benchmark data splits cleanly between two very different AMD products, and the wins are not evenly distributed. The AMD Radeon PRO W7900 takes both recorded benchmark victories, but the AMD Radeon RX 6650M still occupies a distinct performance tier that matters for a different class of user.

In OpenCL workloads, the PRO W7900 records an 84,379 score against 65,800 for the RX 6650M, a 28.2% advantage. That is a decisive margin, but the RX 6650M sits at the 91st percentile among all GPUs, while the PRO W7900 reaches the 94th percentile. Both are high-performing parts by overall database standards, yet the gap between them is substantial.

The Vulkan results are where the separation becomes dramatic. The PRO W7900 posts 137,070, while the RX 6650M manages 77,735, a 76.3% difference. That is not a marginal improvement; it is a generational and architectural chasm. Vulkan tends to expose raw compute and geometry throughput, and the PRO W7900's specifications suggest why it runs away in that API.

Where each one wins, then, is less about workload type and more about scale. The PRO W7900 wins every measured category. The RX 6650M wins in portability, power envelope, and integration, but the database does not record a single benchmark where it takes the lead. Its role is better understood as a capable mobile part that delivers 91st percentile performance in a 120 W package, whereas the PRO W7900 is a workstation-class card with a 295 W TDP and triple-slot cooler.

The average benchmark score reinforces the hierarchy: the PRO W7900 averages 110,725 across recorded tests, while the RX 6650M averages 71,768. That is a 54.3% overall gap. For users whose primary metric is raw score, the choice is obvious. For users whose primary metric is system integration, the RX 6650M remains relevant despite losing every head-to-head test.

Architecture Differences

The two GPUs come from different architectural generations, and that shows in nearly every structural metric. The PRO W7900 uses the Navi 31 chip built on RDNA 3.0, while the RX 6650M uses Navi 23 on RDNA 2.0. The codename for the PRO W7900 is Plum Bonito, and it belongs to the Radeon Pro Navi (Navi III Series) generation. The RX 6650M is part of the Navi Mobile (RX 6000M) generation.

Process technology differs significantly. The PRO W7900 is fabricated on a 5 nm node at TSMC, while the RX 6650M uses a 7 nm node, also at TSMC. That node advantage helps explain the transistor density: the PRO W7900 packs 57,700 million transistors into a 529 mm² die, yielding 109.1 million transistors per square millimeter. The RX 6650M has 11,060 million transistors on a 237 mm² die, for 46.7 million per square millimeter. The PRO W7900 is not just larger, it is more than twice as dense.

Memory architecture is another major divider. The PRO W7900 carries 48 GB of GDDR6 on a 384 bit bus, producing 864.0 GB/s of bandwidth. The RX 6650M has 8 GB of GDDR6 on a 128 bit bus, with 224.0 GB/s. That is a 3.86x bandwidth advantage for the PRO W7900, and the memory capacity difference is 6x. Any workload that scales with memory size or bandwidth will strongly favor the workstation card.

Compute resources follow the same pattern. The PRO W7900 has 6,144 shading units, 384 texture mapping units, and 192 raster output units, plus 96 ray tracing cores. The RX 6650M has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores. In raw shading units, the PRO W7900 has 3.43x more. Pixel rate is 479.0 GPixel/s versus 154.6 GPixel/s, and texture rate is 958.1 GTexel/s versus 270.6 GTexel/s.

Clock behavior is interesting because the smaller chip runs higher base clocks. The RX 6650M has a 2068 MHz base and 2416 MHz boost, with a 2222 MHz game clock. The PRO W7900 has a 1760 MHz base and 2495 MHz boost. The PRO W7900 boosts higher but starts lower, while the RX 6650M holds a higher floor. Memory clocks also differ: the PRO W7900 runs at 2250 MHz (18 Gbps effective), and the RX 6650M at 1750 MHz (14 Gbps effective).

FP32 throughput tells the story of architectural efficiency. The PRO W7900 delivers 61.32 TFLOPS, while the RX 6650M delivers 8.659 TFLOPS. That is a 7.08x difference. FP16 is where the architectures diverge philosophically: the PRO W7900 does 61.32 TFLOPS with a 1:1 ratio, while the RX 6650M does 17.32 TFLOPS at a 2:1 ratio. The RDNA 3.0 part treats FP16 as equal-rate, the RDNA 2.0 part doubles throughput when using packed math.

Bus interface also differs: the PRO W7900 uses PCIe 4.0 x16, and the RX 6650M uses PCIe 4.0 x8. Display outputs are another clear split. The PRO W7900 offers 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1, while the RX 6650M's outputs are listed as portable device dependent, meaning it relies on the host laptop's display infrastructure. Physical size reflects the workstation orientation: the PRO W7900 is 280 mm long, 110 mm tall, and 51 mm wide, in a triple-slot form factor with 2x 8-pin power connectors. The RX 6650M is an IGP with no power connectors and no listed dimensions.

Head-to-Head Benchmarks

The Geekbench OpenCL test gives the PRO W7900 a score of 84,379 against 65,800 for the RX 6650M. The 28.2% delta is significant but not overwhelming. OpenCL is a general-purpose compute API, and both cards handle it competently. The PRO W7900's advantage here likely stems from its much larger memory bus and higher FP32 throughput, but the RX 6650M still performs respectably given its 120 W envelope.

The Geekbench Vulkan test is where the PRO W7900 demonstrates its true dominance. Its 137,070 score versus 77,735 is a 76.3% lead. Vulkan is lower-level and can expose raw hardware capabilities more directly. The PRO W7900's 96 ray tracing cores, 6,144 shading units, and 864.0 GB/s bandwidth combine to produce a result that nearly doubles the mobile part. The RX 6650M's 28 ray tracing cores and 224.0 GB/s bandwidth cannot keep pace.

Looking at nearest rivals from the database provides context. The PRO W7900's average score of 110,725 places it 1% ahead of the AMD Radeon Pro Vega II (109,617) and 3.2% ahead of the AMD Radeon Pro W6600X (107,342). It trails the NVIDIA RTX A5500 Mobile by 2.8% (113,944) and the NVIDIA Tesla V100 SXM2 16 GB by 3.2% (114,395). These are close margins, meaning the PRO W7900 sits in a competitive cluster rather than at a clear top.

The RX 6650M's average of 71,768 is 0.5% behind the NVIDIA TITAN X Pascal (72,098), 0.8% behind the AMD Radeon Pro Vega 64 (72,379), and 2.2% behind the AMD Radeon Vega Frontier Edition (73,370). It is 1.3% ahead of the AMD Radeon RX 6600 LE (70,829). The RX 6650M is therefore a solid mid-to-high range mobile GPU, comparable to older desktop flagship cards, but nowhere near the PRO W7900's class.

The two benchmark results together suggest that the PRO W7900 scales better with compute-heavy APIs. Its OpenCL lead is 28.2%, but its Vulkan lead is 76.3%. That divergence hints at architectural advantages that matter more under Vulkan's explicit control model, likely related to the 5 nm node's higher transistor density and the much wider memory subsystem.

FAQ

Q: Which GPU has better overall benchmark performance?

A: The AMD Radeon PRO W7900 wins both recorded tests. Its average benchmark score is 110,725 versus 71,768 for the AMD Radeon RX 6650M, a 54.3% advantage.

Q: How large is the Vulkan performance gap?

A: In Geekbench Vulkan, the PRO W7900 scores 137,070 against 77,735 for the RX 6650M, a 76.3% lead. This is the widest margin between the two in any recorded test.

Q: Are these GPUs from the same architecture?

A: No. The PRO W7900 uses RDNA 3.0 on a 5 nm process with the Navi 31 chip. The RX 6650M uses RDNA 2.0 on a 7 nm process with the Navi 23 chip.

Q: How do memory specifications compare?

A: The PRO W7900 has 48 GB of GDDR6 on a 384 bit bus with 864.0 GB/s bandwidth. The RX 6650M has 8 GB of GDDR6 on a 128 bit bus with 224.0 GB/s bandwidth.

Q: What power and cooling do they require?

A: The PRO W7900 has a 295 W TDP, uses a triple-slot cooler, requires 2x 8-pin power connectors, and needs a 600 W suggested PSU. The RX 6650M has a 120 W TDP, is an IGP with no power connectors, and no suggested PSU is listed.

Q: What are the ray tracing capabilities?

A: The PRO W7900 has 96 ray tracing cores. The RX 6650M has 28 ray tracing cores.

The Verdict

The data points to a clear performance hierarchy, but the appropriate choice depends entirely on the use case. The AMD Radeon PRO W7900 is the dominant part in every recorded benchmark, with a 28.2% OpenCL lead and a 76.3% Vulkan lead. Its 48 GB memory capacity, 864.0 GB/s bandwidth, and 61.32 TFLOPS FP32 throughput make it a workstation-oriented tool for compute-heavy, memory-hungry workloads. The 94th percentile standing among all GPUs confirms it belongs in the upper tier of the database.

The AMD Radeon RX 6650M, despite losing every head-to-head test, is not a weak GPU. Its 91st percentile ranking and average score of 71,768 place it in the same league as desktop cards like the NVIDIA TITAN X Pascal and AMD Radeon Pro Vega 64. For a mobile part with a 120 W TDP, that is impressive density. It achieves this with 8 GB of GDDR6, 224.0 GB/s bandwidth, and 8.659 TFLOPS FP32, all within an IGP form factor that requires no power connectors.

Users who need maximum compute throughput, large memory buffers, and professional display outputs should choose the PRO W7900. Its 3x DisplayPort 2.1 and 1x mini-DisplayPort 2.1 outputs, PCIe 4.0 x16 interface, and 5 nm RDNA 3.0 architecture make it a serious workstation component. The 3,999 USD launch MSRP reflects that positioning.

Users who need a high-performing GPU in a portable, integrated package should choose the RX 6650M. It delivers 91st percentile performance at 120 W, with no external power requirements and no physical footprint beyond the host laptop. Its RDNA 2.0 architecture still supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, matching the PRO W7900's API feature set despite the performance gap.

The production status tells a story too: the PRO W7900 is active, while the RX 6650M is end-of-life. The PRO W7900 was released on 2023-05-25, and the RX 6650M on 2022-01-03. The workstation card is newer, denser, and still in production.

Specification Differences

| Specification | AMD Radeon PRO W7900 | AMD Radeon RX 6650M |

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

| 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 |

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

| Base Clock | 1760 MHz | 2068 MHz |

| Boost Clock | 2495 MHz | 2416 MHz |

| Game Clock | None listed | 2222 MHz |

| Memory Clock | 2250 MHz (18 Gbps effective) | 1750 MHz (14 Gbps effective) |

| Memory Size | 48 GB | 8 GB |

| Memory Bus | 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 | 154.6 GPixel/s |

| Texture Rate | 958.1 GTexel/s | 270.6 GTexel/s |

| FP32 | 61.32 TFLOPS | 8.659 TFLOPS |

| FP16 | 61.32 TFLOPS (1:1) | 17.32 TFLOPS (2:1) |

| TDP | 295 W | 120 W |

| Slot Width | Triple-slot | IGP |

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

| Suggested PSU | 600 W | None listed |

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

| Display Outputs | 3x DisplayPort 2.1, 1x mini-DisplayPort 2.1 | Portable Device Dependent |

| Dimensions | 280 mm x 110 mm x 51 mm | Not listed |

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

| Release Date | 2023-05-25 | 2022-01-03 |

| Launch MSRP | 3,999 USD | None listed |

| Average Benchmark Score | 110,725 | 71,768 |

| Percentile vs All GPUs | 94 | 91 |