AMD Radeon Pro 5600M vs AMD Radeon RX 6600 Comparison

Head-to-Head Benchmarks

The benchmark record is decisive: the AMD Radeon RX 6600 wins 9 of the 10 head-to-head comparisons, with the AMD Radeon Pro 5600M claiming a single victory. The largest margin belongs to the RX 6600 in Passmark DirectX 11, where it scores 152 versus 59, a 157.6% advantage. That is the kind of gap that separates playable frame rates from slideshow territory in older DirectX 11 titles.

The RX 6600 also dominates the Passmark DirectX 9 test, scoring 197 against 118, a 66.9% lead. In DirectX 10, the RX 6600 posts 95 versus 62, a 53.2% advantage. DirectX 12 shows a narrower but still clear win: 51 versus 39, a 30.8% margin. The pattern across all four Passmark API tests is consistent, the RX 6600 leads in every generation of DirectX, with the biggest gaps in the older APIs.

Geekbench results split the two cards in an interesting way. The RX 6600 wins Geekbench Metal decisively, 88398 to 55030, a 60.6% advantage. That is a notable result for a desktop card facing a mobile-oriented part, as Metal is the API most associated with Apple platforms. The Pro 5600M, however, takes Geekbench OpenCL by a substantial margin: 47783 versus 28850, a 39.6% lead for the mobile card. This is the only benchmark in the entire comparison where the Pro 5600M comes out ahead. In Geekbench Vulkan, the RX 6600 reasserts control with 67623 versus 46425, a 45.7% win.

The compute-focused tests follow the same trend as the graphics tests. Passmark GPU Compute gives the RX 6600 a 6554 score against 4031, a 62.6% lead. Passmark G3D shows 15096 versus 9279, a 62.7% advantage. Even the 2D test, Passmark G2D, goes to the RX 6600 at 889 versus 679, a 30.9% margin. The overall averages reflect this: the RX 6600 records an average benchmark score of 19036, while the Pro 5600M averages 16351. That places the RX 6600 at the 63rd percentile of all GPUs in the database, while the Pro 5600M sits at the 59th percentile.

Context from the nearest rivals clarifies the positioning. The RX 6600's average of 19036 puts it essentially level with the NVIDIA Quadro K6000 at 19030 and the NVIDIA GeForce RTX 4050 Mobile at 19049, with deltas of 0% and -0.1% respectively. The Pro 5600M's 16351 average sits just below the AMD Radeon RX 5700 XT at 16361, a -0.1% delta. The RX 6600 is therefore competing in a higher performance tier, while the Pro 5600M clusters with desktop cards from the previous generation.

Architecture Differences

The two GPUs come from different architectural generations despite sharing the same 7 nm TSMC process node. The RX 6600 uses the Navi 23 chip built on RDNA 2.0, while the Pro 5600M uses Navi 12 built on RDNA 1.0. This is the single most important architectural distinction: RDNA 2.0 brings hardware ray tracing support, which RDNA 1.0 lacks entirely. The RX 6600 includes 28 ray tracing cores; the Pro 5600M has none.

The RX 6600 packs 11,060 million transistors on a 237 mm² die, giving a transistor density of 46.7M per mm². The Pro 5600M's transistor count and die size are not recorded in the database, so a direct density comparison is not possible. What is known is that the RX 6600 relies on 1792 shading units, 112 texture mapping units, and 64 ROPs. The Pro 5600M counters with 2560 shading units and 160 TMUs, but also 64 ROPs. The Pro 5600M has more raw shading hardware, yet it cannot translate that into higher benchmark scores, which points to clock speed and architectural efficiency as the deciding factors.

Clock speeds show a stark difference. The RX 6600 runs at a 1626 MHz base and 2491 MHz boost, with a game clock of 2044 MHz. The Pro 5600M operates at just 822 MHz base and 1144 MHz boost. That is roughly half the clock rate. The RX 6600's pixel rate is 159.4 GPixel/s versus 73.22 GPixel/s for the Pro 5600M, and its texture rate is 279.0 GTexel/s versus 183.0 GTexel/s. FP32 compute reaches 8.928 TFLOPS on the RX 6600, while the Pro 5600M manages 5.857 TFLOPS. FP16 follows the same pattern: 17.86 TFLOPS versus 11.71 TFLOPS, both at a 2:1 ratio.

Memory architecture differs fundamentally. The RX 6600 uses 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s of bandwidth. The Pro 5600M also has 8 GB, but it is HBM2 on a 2048-bit bus, delivering 394.2 GB/s. The Pro 5600M wins the bandwidth battle by a wide margin, 394.2 GB/s versus 224.0 GB/s, which helps explain its strong OpenCL showing. The RX 6600's memory runs at 1750 MHz (14 Gbps effective), while the Pro 5600M's runs at 770 MHz (1540 Mbps effective). The HBM2's advantage comes from sheer bus width, not clock speed.

Power and physical design also separate the two. The RX 6600 has a 132 W TDP, requires a single 8-pin power connector, a suggested PSU of 300 W, and is a dual-slot card measuring 190 mm long. The Pro 5600M is an integrated graphics package with a 50 W TDP, no power connectors, and no standalone dimensions recorded. It is designed to be portable device dependent rather than a discrete add-in board. The RX 6600 uses a PCIe 4.0 x8 interface, while the Pro 5600M uses PCIe 4.0 x16.

API support differs at the margins. The RX 6600 supports DirectX 12 Ultimate (12_2) and Vulkan 1.4. The Pro 5600M supports DirectX 12 (12_1) and Vulkan 1.3. Both support OpenGL 4.6. The RX 6600's DirectX 12 Ultimate certification is significant, as it includes features like ray tracing and variable rate shading that the Pro 5600M cannot offer. Display outputs also reflect their different roles: the RX 6600 has 1x HDMI 2.1 and 3x DisplayPort 1.4a, while the Pro 5600M's outputs are listed as portable device dependent.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon RX 6600 records an average benchmark score of 19036, while the AMD Radeon Pro 5600M averages 16351.

Q: Does the Pro 5600M win any benchmark at all?

A: Yes, the Pro 5600M wins Geekbench OpenCL with a score of 47783 against the RX 6600's 28850, a 39.6% lead.

Q: Which card supports hardware ray tracing?

A: The RX 6600 includes 28 ray tracing cores as part of RDNA 2.0 and supports DirectX 12 Ultimate. The Pro 5600M, based on RDNA 1.0, has no ray tracing cores and supports only DirectX 12 (12_1).

Q: How does memory bandwidth compare between the two?

A: The Pro 5600M offers 394.2 GB/s of bandwidth via HBM2 on a 2048-bit bus, while the RX 6600 offers 224.0 GB/s via GDDR6 on a 128-bit bus.

Q: What is the TDP difference?

A: The RX 6600 has a 132 W TDP and requires a 1x 8-pin power connector. The Pro 5600M has a 50 W TDP and requires no power connectors.

Q: Which card is more recent?

A: The RX 6600 was released on 2021-10-12, while the Pro 5600M was released on 2020-06-14. Both are now end-of-life products.

The Verdict

The data points to a clear conclusion: the AMD Radeon RX 6600 is the stronger GPU for nearly every workload measured. It wins 9 of 10 head-to-head benchmarks, including every Passmark test and both Geekbench Metal and Vulkan tests. Its average score of 19036 places it at the 63rd percentile of all GPUs, a full 16.4% above the Pro 5600M's 59th percentile ranking. The RX 6600 benefits from RDNA 2.0's architectural improvements, nearly double the clock speed, and hardware ray tracing capability. The Pro 5600M's only meaningful victory in OpenCL is notable, and even that does not offset the breadth of the RX 6600's wins.

The Pro 6600's wins are not just frequent, they are large. Margins of 157.6% in DirectX 11, 66.9% in DirectX 9, 62.7% in G3D, and 60.6% in Metal leave little room for interpretation. The RX 6600, however, is the obvious pick for gaming, gaming performance across API generations, compute workloads outside OpenCL, and any ray tracing workload. The Pro 5600M, with its 394.2 GB/s HBM2 bandwidth and 2560 shading units, is the only choice for scenarios where OpenCL is the dominant API, and even then only if the RX 6600's 224.0 GB/s bandwidth and lower shading unit count are not factors.

Specification Differences

| Specification | AMD Radeon RX 6600 | AMD Radeon Pro 5600M |

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

| Chip | Navi 23 | Navi 12 |

| Architecture | RDNA 2.0 | RDNA 1.0 |

| Generation | Navi II (RX 6000) | Radeon Pro Mac (Navi Mobile) |

| Transistors | 11,060 million | Not recorded |

| Die Size | 237 mm² | Not recorded |

| Transistor Density | 46.7M / mm² | Not recorded |

| Base Clock | 1626 MHz | 822 MHz |

| Boost Clock | 2491 MHz | 1144 MHz |

| Game Clock | 2044 MHz | Not recorded |

| Memory Clock | 1750 MHz (14 Gbps effective) | 770 MHz (1540 Mbps effective) |

| Memory Type | GDDR6 | HBM2 |

| Memory Bus Width | 128 bit | 2048 bit |

| Memory Bandwidth | 224.0 GB/s | 394.2 GB/s |

| Shading Units | 1792 | 2560 |

| TMUs | 112 | 160 |

| ROPs | 64 | 64 |

| Ray Tracing Cores | 28 | None |

| Pixel Rate | 159.4 GPixel/s | 73.22 GPixel/s |

| Texture Rate | 279.0 GTexel/s | 183.0 GTexel/s |

| FP32 | 8.928 TFLOPS | 5.857 TFLOPS |

| FP16 | 17.86 TFLOPS (2:1) | 11.71 TFLOPS (2:1) |

| TDP | 132 W | 50 W |

| Slot Width | Dual-slot | IGP |

| Power Connectors | 1x 8-pin | None |

| Suggested PSU | 300 W | Not recorded |

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

| Display Outputs | 1x HDMI 2.1, 3x DisplayPort 1.4a | Portable Device Dependent |

| DirectX | 12 Ultimate (12_2) | 12 (12_1) |

| OpenGL | 4.6 | 4.6 |

| Vulkan | 1.4 | 1.3 |

| Release Date | 2021-10-12 | 2020-06-14 |

| Launch MSRP | 329 USD | Not recorded |

Where Each One Wins

The RX 6600 wins everywhere except in one workload: ray tracing, DirectX 12 Ultimate features, Vulkan 1.4 support, and every generation of DirectX from 9 through 12. It wins Metal, OpenCL is the sole exception. It wins every Passmark test, from DirectX 9 through 10, 11, 12, G2D, G3D, GPU Compute. That is a GPU designed for broad software compatibility, and it delivers in each API category. Compute, DirectX 9 through 12 all favor the RX 6600, DirectX 10, 11, 12, G2D, G3D, and GPU Compute all go to the RX 6600. Metal and Vulkan also favor the RX 6600. The only category where the RX 6600 does not lead is OpenCL, and even there the Pro 5600M's 39.6% margin is its sole bright spot. The Pro 5600M is also the only one that matches the RX 6600 in ROP count at 64, though the rest of its specs lag. The Pro 5600M's HBM2 memory gives it a bandwidth advantage that shows up in OpenCL, but nowhere else in the benchmark suite. For any use case that does not rely heavily on OpenCL, the RX 6600 is the correct choice. For OpenCL-centric workloads, the Pro 5600M is the only option between the two that wins a benchmark.