AMD Radeon Pro W6600M vs NVIDIA GeForce RTX 4080 SUPER Comparison

The NVIDIA GeForce RTX 4080 SUPER and AMD Radeon Pro W6600M both sit at the 88th percentile among all GPUs, yet they could hardly be more different in construction and intent. The RTX 4080 SUPER is a desktop-class Ada Lovelace part with a 320W TDP and a triple-slot cooler, while the Pro W6600M is an RDNA 2.0 mobile chip rated at just 90W and packaged as an IGP. Their average benchmark scores are nearly identical—53610 versus 53414, a 0.4% gap—but the only head-to-head test in the database reveals a chasm that the averages completely mask. This analysis digs into the numbers to see what each card actually delivers and where the data says each one belongs.

Head-to-Head Benchmarks

The sole shared benchmark between these two GPUs is Geekbench OpenCL. Here the RTX 4080 SUPER posts 246994, while the Pro W6600M scores 53414. That is a delta of 362.4% in favor of the NVIDIA card—a lead of nearly four times. No other test appears in both cards' benchmark lists, so this single result is the only direct apples-to-apples comparison available.

Yet the average benchmark scores tell a different story. The RTX 4080 SUPER's average of 53610 is derived from ten different tests, including 3DMark Steel Nomad (6600), Geekbench Vulkan (226163), and a spread of Passmark scores ranging from 134 (DirectX 12) to 381 (DirectX 9). The Pro W6600M's average of 53414 is based entirely on its single Geekbench OpenCL result. The two averages differ by only 0.4%, which suggests that the RTX 4080 SUPER's OpenCL dominance is offset by its much weaker performance in other workloads—or that the Pro W6600M's one score is unusually strong relative to what a 90W mobile part might be expected to achieve.

Looking at the nearest rivals, both cards sit in a tight cluster. The RTX 4080 SUPER is 0.2% ahead of the AMD Radeon RX 6900 XT (53489), 2.1% ahead of the RX 7700S (52505), and 2.9% ahead of the RTX 5070 Ti (52086). The Pro W6600M trails the RX 6900 XT by 0.1%, but leads the RX 7700S by 1.7% and the RTX 5070 Ti by 2.5%. So on average, the two cards are effectively peers—but the OpenCL result implies that the RTX 4080 SUPER has a massive advantage in compute-heavy OpenCL workloads, while the Pro W6600M may be competitive in other areas that are not directly measured here.

Architecture Differences

The underlying silicon could not be more different. The RTX 4080 SUPER uses the AD103 chip on TSMC's 5nm process, packing 45,900 million transistors onto a 379 mm² die, yielding a transistor density of 121.1M per mm². The Pro W6600M uses the Navi 23 chip on TSMC's 7nm process, with 11,060 million transistors on a 237 mm² die—a density of just 46.7M per mm². That is a 4.15x difference in transistor count and a 2.6x difference in density, even though the die is only 60% larger.

Architecturally, the RTX 4080 SUPER is Ada Lovelace, while the Pro W6600M is RDNA 2.0. The NVIDIA part carries 10240 shading units, 320 TMUs, 112 ROPs, 80 RT cores, and 320 Tensor cores. The AMD part has 1792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores, with no Tensor cores at all. The shading unit count alone is a 5.7x difference. Clock speeds also diverge: the RTX 4080 SUPER runs at a base of 2295 MHz and boosts to 2550 MHz, while the Pro W6600M sits at 1224 MHz base and 2034 MHz boost. Even so, the Pro's memory clock is higher at 1750 MHz versus 1438 MHz, but that does not compensate for the bus width and memory type differences.

Memory is another major split. The RTX 4080 SUPER has 16 GB of GDDR6X on a 256-bit bus, delivering 736.3 GB/s of bandwidth. The Pro W6600M has 8 GB of GDDR6 on a 128-bit bus, for 224.0 GB/s. That is a 3.3x bandwidth advantage for the NVIDIA card. Compute throughput follows: the RTX 4080 SUPER reaches 52.22 TFLOPS FP32 and the same 52.22 TFLOPS FP16 (1:1 ratio), while the Pro W6600M manages 7.290 TFLOPS FP32 and 14.58 TFLOPS FP16 (2:1 ratio). Pixel and texture rates also favor NVIDIA—285.6 GPixel/s and 816.0 GTexel/s versus 130.2 GPixel/s and 227.8 GTexel/s.

FAQ

Q: Why does the RTX 4080 SUPER have such a higher Geekbench OpenCL score?

A: The data shows a 362.4% lead (246994 vs 53414). This is likely driven by the RTX 4080 SUPER's far larger shading unit count (10240 vs 1792), higher boost clock (2550 MHz vs 2034 MHz), and 3.3x more memory bandwidth (736.3 GB/s vs 224.0 GB/s). No other factors are directly measurable from the provided benchmarks.

Q: Are these two GPUs in the same performance class?

A: Their average benchmark scores are within 0.4% (53610 vs 53414), and both sit at the 88th percentile. However, the only direct comparison—Geekbench OpenCL—shows a massive gap, so the averages are not representative of all workloads.

Q: Which card has more VRAM?

A: The RTX 4080 SUPER has 16 GB of GDDR6X, while the Pro W6600M has 8 GB of GDDR6. The RTX card also uses a 256-bit bus versus 128-bit, giving it 736.3 GB/s bandwidth versus 224.0 GB/s.

Q: Does the Pro W6600M have Tensor cores?

A: No. The RTX 4080 SUPER lists 320 Tensor cores, while the Pro W6600M's Tensor core field is null.

Q: Which GPU is more power-efficient?

A: The Pro W6600M has a 90W TDP versus 320W for the RTX 4080 SUPER, and it requires no external power connectors, whereas the RTX card needs a 16-pin connector and a 700W PSU. However, performance-per-watt cannot be calculated from the given data.

Q: Which GPU is newer?

A: The RTX 4080 SUPER was released on 2024-01-07, while the Pro W6600M launched on 2021-06-07. Both are now marked as end-of-life.

Specification Differences

| Field | NVIDIA GeForce RTX 4080 SUPER | AMD Radeon Pro W6600M |

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

| Chip | AD103 | Navi 23 |

| Architecture | Ada Lovelace | RDNA 2.0 |

| Process node | 5 nm | 7 nm |

| Transistors | 45,900 million | 11,060 million |

| Die size | 379 mm² | 237 mm² |

| Transistor density | 121.1M / mm² | 46.7M / mm² |

| Base clock | 2295 MHz | 1224 MHz |

| Boost clock | 2550 MHz | 2034 MHz |

| Memory clock | 1438 MHz (23 Gbps effective) | 1750 MHz (14 Gbps effective) |

| Memory size | 16 GB | 8 GB |

| Memory type | GDDR6X | GDDR6 |

| Memory bus | 256 bit | 128 bit |

| Memory bandwidth | 736.3 GB/s | 224.0 GB/s |

| Shading units | 10240 | 1792 |

| TMUs | 320 | 112 |

| ROPs | 112 | 64 |

| RT cores | 80 | 28 |

| Tensor cores | 320 | null |

| Pixel rate | 285.6 GPixel/s | 130.2 GPixel/s |

| Texture rate | 816.0 GTexel/s | 227.8 GTexel/s |

| FP32 | 52.22 TFLOPS | 7.290 TFLOPS |

| FP16 | 52.22 TFLOPS (1:1) | 14.58 TFLOPS (2:1) |

| TDP | 320 W | 90 W |

| Slot width | Triple-slot | IGP |

| Power connectors | 1x 16-pin | None |

| Suggested PSU | 700 W | null |

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

| Dimensions | 310 mm (12.2 in) length, 140 mm (5.5 in) height, 61 mm (2.4 in) width | null |

| Release date | 2024-01-07 | 2021-06-07 |

| Predecessor | GeForce 30 | FirePro Mobile |

| Successor | GeForce 50 | null |

| Launch MSRP | 999 USD | null |

Both cards share the same API support (DirectX 12 Ultimate, OpenGL 4.6, Vulkan 1.4), the same PCIe 4.0 x16 bus interface, and the same end-of-life production status. The RTX 4080 SUPER is the only one with a launch MSRP.

The Verdict

The data points to a clear conclusion for raw performance: the RTX 4080 SUPER dominates the only direct comparison. Its 362.4% lead in Geekbench OpenCL is backed by a 5.7x shading unit advantage, a 3.3x memory bandwidth advantage, and more than 7x the FP32 throughput. If a workload is OpenCL-heavy, the RTX 4080 SUPER is the unequivocal choice. However, the near-identical average scores (53610 vs 53414) remind us that the Pro W6600M's single benchmark is strong enough to place it in the same overall percentile. That suggests the Pro W6600M may be tuned for specific compute tasks, or that its 90W power envelope allows it to punch above its weight in certain mobile scenarios.

For desktop users with room for a triple-slot, 320W card, the RTX 4080 SUPER is the obvious pick—provided the workload benefits from its massive compute and memory resources. For mobile or embedded systems where power draw and physical size are constraints, the Pro W6600M's 90W TDP and IGP form factor make it the only viable option of the two. The RTX 4080 SUPER requires a 16-pin connector and a 700W PSU; the Pro W6600M needs none. There is no "best" card across all use cases—only the right tool for the environment.

Where Each One Wins

NVIDIA GeForce RTX 4080 SUPER wins on every measurable performance metric in the head-to-head. It leads Geekbench OpenCL by 362.4%. It has more VRAM (16 GB vs 8 GB), higher bandwidth (736.3 GB/s vs 224.0 GB/s), more shading units (10240 vs 1792), more RT cores (80 vs 28), and higher pixel/texture rates. It also supports Tensor cores, which the Pro lacks