AMD Radeon RX 6650M vs NVIDIA GeForce RTX 5080 Comparison

FAQ

Q: How does the AMD Radeon RX 6650M compare to the NVIDIA GeForce RTX 5080 in compute performance?

A: The RTX 5080 leads decisively. In Geekbench OpenCL, the RTX 5080 scores 235901 versus 65800 for the RX 6650M, a 72.1% advantage for NVIDIA. In Geekbench Vulkan, the RTX 5080 scores 255450 versus 77735, a 69.6% advantage.

Q: Which GPU has a higher average benchmark score?

A: The RX 6650M has a higher average benchmark score of 71768, versus 56083 for the RTX 5080. However, this metric includes a different mix of tests, and the two GPUs occupy different performance tiers in the database.

Q: What are the memory specifications of each card?

A: The RX 6650M has 8 GB of GDDR6 memory on a 128-bit bus with 224.0 GB/s bandwidth. The RTX 5080 has 16 GB of GDDR7 memory on a 256-bit bus with 960.0 GB/s bandwidth.

Q: What is the process node and transistor count for each GPU?

A: The RX 6650M uses a 7 nm process with 11,060 million transistors on a 237 mm² die. The RTX 5080 uses a 5 nm process with 45,600 million transistors on a 378 mm² die.

Q: Does the RTX 5080 support tensor cores?

A: Yes, the RTX 5080 includes 336 tensor cores. The RX 6650M does not list tensor cores in its specifications.

Q: What is the power consumption difference?

A: The RX 6650M has a TDP of 120 W, while the RTX 5080 has a TDP of 360 W. The RTX 5080 also requires a 1x 16-pin power connector and a suggested PSU of 750 W, while the RX 6650M uses no power connectors and is an IGP-class part.

Architecture Differences

The two GPUs come from fundamentally different design generations. The AMD Radeon RX 6650M is built on RDNA 2.0 architecture, using the Navi 23 chip, and belongs to the Navi Mobile (RX 6000M) generation. The NVIDIA GeForce RTX 5080 uses the Blackwell 2.0 architecture with the GB203 chip, part of the GeForce 50 generation.

The manufacturing process differs substantially. The RX 6650M uses a 7 nm process at TSMC with 11,060 million transistors on a 237 mm² die, yielding a transistor density of 46.7M per mm². The RTX 5080 moves to a 5 nm process at the same foundry, packing 45,600 million transistors onto a 378 mm² die, for a transistor density of 120.6M per mm². That is a 2.6x increase in transistor density per square millimeter.

The compute resource allocation is also very different. The RX 6650M has 1792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. The RTX 5080 scales this up dramatically with 10,752 shading units, 336 TMUs, 112 ROPs, 84 RT cores, and an additional 336 tensor cores that the AMD part does not have at all.

Clock behavior differs as well. The RX 6650M has a base clock of 2068 MHz, a game clock of 2222 MHz, and a boost clock of 2416 MHz. The RTX 5080 has a base clock of 2295 MHz and a boost of 2617 MHz, with no game clock listed. Memory clock speeds also diverge: the RX 6650M runs at 1750 MHz with 14 Gbps effective, while the RTX 5080 runs at 1875 MHz with 30 Gbps effective.

The FP32 and FP16 throughput tells a similar story. The RX 6650M delivers 8.659 TFLOPS FP32 and 17.32 TFLOPS FP16 with a 2:1 ratio. The RTX 5080 delivers 56.28 TFLOPS FP32 and 56.28 TFLOPS FP16 with a 1:1 ratio, meaning NVIDIA does not gain any half-precision advantage from FP16 workloads process at the same rate as FP32.

Head-to-Head Benchmarks

The database records two head-to-head benchmark comparisons, both won by the NVIDIA GeForce RTX 5080. In Geekbench OpenCL, the RTX 5080 scores 235901 against the RX 6650M's 65800. This represents a 72.1% lead for NVIDIA. The gap is so wide that the AMD part is not competing in the same compute tier; it trails by more than two-thirds in raw OpenCL throughput.

In Geekbench Vulkan, the RTX 5080 scores 255450 against 77735 for the RX 6650M, a 69.6% advantage. The absolute scores are higher for both cards in Vulkan than in OpenCL, which indicates that both architectures benefit from the lower-overhead API, but the relative gap remains nearly identical. NVIDIA's Vulkan lead is slightly smaller in percentage terms than its OpenCL lead, but still decisive.

The RX 6650M does not win either recorded head-to-head test. Its wins total is 0, while the RTX 5080 wins 2. The closest the AMD part comes is in Vulkan, where its score of 77735 is about 30.4% of the RTX 5080's 255450. In OpenCL, the RX 6650M reaches only about 27.9% of the RTX 5080's score.

The RTX 5080 also has a much broader benchmark footprint in the database. It records scores across 3DMark Steel Nomad DX12, Geekbench OpenCL and Vulkan, and five Passmark tests (DirectX 9, 10, 11, 12, G2D, G3D, and GPU compute). The RX 6650M only has Geekbench OpenCL and Vulkan scores. The RTX 5080's 3DMark Steel Nomad DX12 score is 8637, which represents a modern DirectX 12 workload that the RX 6650M has no recorded result for.

Specification Differences

The two GPUs differ in nearly every specification category. The table below lists only the fields where the two parts differ.

| Specification | AMD Radeon RX 6650M | NVIDIA GeForce RTX 5080 |

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

| Series | Radeon RX 6000 series | GeForce 50-series |

| Chip | Navi 23 | GB203 |

| Architecture | RDNA 2.0 | Blackwell 2.0 |

| Generation | Navi Mobile (RX 6000M) | GeForce 50 |

| Process Node | 7 nm | 5 nm |

| Transistors | 11,060 million | 45,600 million |

| Die Size | 237 mm² | 378 mm² |

| Transistor Density | 46.7M / mm² | 120.6M / mm² |

| Base Clock | 2068 MHz | 2295 MHz |

| Boost Clock | 2416 MHz | 2617 MHz |

| Game Clock | 2222 MHz | Not listed |

| Memory Clock | 1750 MHz, 14 Gbps effective | 1875 MHz, 30 Gbps effective |

| Memory Size | 8 GB | 16 GB |

| Memory Type | GDDR6 | GDDR7 |

| Memory Bus | 128 bit | 256 bit |

| Memory Bandwidth | 224.0 GB/s | 960.0 GB/s |

| Shading Units | 1792 | 10752 |

| TMUs | 112 | 336 |

| ROPs | 64 | 112 |

| RT Cores | 28 | 84 |

| Tensor Cores | Not listed | 336 |

| Pixel Rate | 154.6 GPixel/s | 293.1 GPixel/s |

| Texture Rate | 270.6 GTexel/s | 879.3 GTexel/s |

| FP32 | 8.659 TFLOPS | 56.28 TFLOPS |

| FP16 | 17.32 TFLOPS (2:1) | 56.28 TFLOPS (1:1) |

| TDP | 120 W | 360 W |

| Slot Width | IGP | Dual-slot |

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

| Suggested PSU | Not listed | 750 W |

| Bus Interface | PCIe 4.0 x8 | PCIe 5.0 x16 |

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

| Dimensions | Not listed | 304 mm x 137 mm x 40 mm |

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

| Release Date | 2025-01-29 | 2025-01-29 (predecessor GeForce 40, successor GeForce 60) |

| Launch MSRP | Not listed | 999 USD |

The RTX 5080 has a 4.3x higher FP32 throughput, a 4.3x higher texture rate, and a 1.9x higher pixel rate. Its memory bandwidth is 4.3x higher. The RX 6650M is an IGP-class part with no power connectors, while the RTX 5080 is a dual-slot card requiring a 16-pin connector and a 750 W suggested PSU.

Where Each One Wins

The NVIDIA GeForce RTX 5080 wins in every recorded head-to-head benchmark, and it wins by a massive margin in compute-bound workloads. In Geekbench OpenCL, it is 72.1% ahead of the RX 6650M, and in Geekbench Vulkan it is 69.6% ahead. These are not close contests; they are tier-defining gaps. The RTX 5080 is the clear choice for any workload that stresses raw FP32 compute, ray tracing, or modern DirectX 12 rendering, as evidenced by its 3DMark Steel Nomad DX12 score of 8637.

The RTX 5080 also wins on memory capacity and bandwidth. With 16 GB of GDDR7 memory and 960.0 GB/s of bandwidth, it provides 2x the capacity and 4.3x the bandwidth of the RX 6650M. This matters for high-resolution textures, large datasets, and compute workloads that spill beyond 8 GB. The RTX 5080's 336 tensor cores give it a feature that the RX 6650M does not have at all, which makes it the only one of the two with dedicated AI acceleration hardware.

The AMD Radeon RX 6650M does have one notable advantage in the database: its average benchmark score of 71768 is higher than the RTX 5080's 56083. This is because the average includes a different set of tests, and the RX 6650M's percentile versus all GPUs is 91, compared to 87 for the RTX 5080. The RX 6650M also sits in a much lower power envelope at 120 W, versus 360 W for the RTX 5080, and requires no external power connectors, making it suitable for thin-and-light platforms where the RTX 5080's dual-slot, 16-pin design would be physically impossible.

For use-case planning, the split is straightforward. The RTX 5080 is the choice for desktop workstations and high-end gaming rigs that need maximum compute throughput, ray tracing performance, and memory bandwidth. The RX 6650M is the choice for mobile platforms where power draw, physical footprint, and integration are the primary constraints. The RX 6650M is end-of-life, while the RTX 5080 is still active in production, so the long-term availability picture also favors NVIDIA. In short, the RTX 5080 wins on raw performance and features, while the RX 6650M wins only on the aggregate database score and on the efficiency and form-factor front.