AMD Radeon RX 6650M vs NVIDIA GeForce RTX 4080 SUPER Comparison

The AMD Radeon RX 6650M and the NVIDIA GeForce RTX 4080 SUPER occupy very different corners of the GPU landscape, and the benchmark data reflects that clearly. Based on the recorded measurements, the RTX 4080 SUPER is the dominant performer in every head-to-head test, but the RX 6650M still holds relevance for specific mobile and low-power scenarios. This analysis walks through the exact numbers, architecture differences, and practical takeaways from the database.

Head-to-Head Benchmarks

The database includes two direct comparisons between these GPUs, both in Geekbench compute workloads. In the OpenCL test, the AMD Radeon RX 6650M scores 65,800, while the NVIDIA GeForce RTX 4080 SUPER scores 219,065. That is a 70% deficit for the AMD card relative to the NVIDIA card. In the Vulkan test, the RX 6650M records 77,735 versus the RTX 4080 SUPER’s 260,075, a 70.1% gap. The NVIDIA card wins both head-to-head tests, giving it a 2-0 record in direct comparisons.

These are enormous margins. The RTX 4080 SUPER more than triples the RX 6650M’s OpenCL score and more than triples its Vulkan score. For context, the RX 6650M’s average benchmark score across all tests is 71,768, while the RTX 4080 SUPER’s average is 54,209. The averages tell a different story than the head-to-heads, because the RTX 4080 SUPER’s average is dragged down by several Passmark scores that are much lower than its Geekbench results. For example, the RTX 4080 SUPER scores 1270 in Passmark G2D, 301 in Passmark DirectX 11, and 134 in Passmark DirectX 12. These are clearly different workloads than the compute-heavy Geekbench tests, and they illustrate why average scores can be misleading without context.

Looking at the nearest rivals in the database, the RX 6650M sits at the 91st percentile of all GPUs. Its closest competitors are the NVIDIA TITAN X Pascal with an average score of 72,098 (0.5% higher), the AMD Radeon Pro Vega 64 at 72,379 (0.8% higher), the AMD Radeon RX 6600 LE at 70,829 (1.3% lower), and the AMD Radeon Vega Frontier Edition at 73,370 (2.2% higher). The RX 6650M is essentially within 2% of all of these cards, meaning it trades blows with high-end desktop cards from several generations ago.

The RTX 4080 SUPER, by contrast, sits at the 86th percentile of all GPUs. Its nearest rivals are the NVIDIA GeForce RTX 4080 with an average score of 54,247 (0.1% higher), the AMD Radeon Pro W5700X at 54,828 (1.1% higher), the AMD Radeon RX 6750 GRE 12 GB at 55,698 (2.7% higher), and the AMD Radeon 8060S at 55,757 (2.8% higher). The RTX 4080 SUPER is within 3% of these cards, showing that its average score is representative of a tight cluster of high-end GPUs. The percentile difference is notable: the RX 6650M ranks higher (91st) than the RTX 4080 SUPER (86th), even though the RTX 4080 SUPER wins the head-to-head compute tests by a huge margin. This is because percentiles are based on average scores across all tests, and the RTX 4080 SUPER’s low Passmark scores lower its standing.

Architecture Differences

The two GPUs are built on completely different architectures and nodes. The AMD RX 6650M uses the Navi 23 chip with RDNA 2.0 architecture, fabricated on TSMC’s 7 nm process. The chip contains 11,060 million transistors on a die size of 237 mm², giving it a transistor density of 46.7 million per square millimeter. The NVIDIA GeForce RTX 4080 SUPER uses the AD103 chip with Ada Lovelace architecture, fabricated on TSMC’s 5 nm process. It contains 45,900 million transistors on a die size of 379 mm², with a density of 121.1 million per square millimeter. The RTX 4080 SUPER has over four times the transistors of the RX 6650M, on a die that is about 60% larger by area, but with a much higher density.

The memory configurations are equally divergent. The RX 6650M has 8 GB of GDDR6 memory on a 128-bit bus, delivering 224.0 GB/s bandwidth. The RTX 4080 SUPER has 16 GB of GDDR6X memory on a 256-bit bus, delivering 736.3 GB/s bandwidth. That is 3.3 times the bandwidth of the RX 6650M. The memory clock speeds also differ: the RX 6650M runs at 1750 MHz base (14 Gbps effective), while the RTX 4080 SUPER runs at 1438 MHz base (23 Gbps effective). The GDDR6X standard on the RTX card allows for higher effective data rates despite similar base clocks.

Compute resources show a similar gap. The RX 6650M has 1,792 shading units, 112 texture mapping units, 64 ROPs, and 28 ray tracing cores. The RTX 4080 SUPER has 10,240 shading units, 320 TMUs, 112 ROPs, 80 RT cores, and 320 tensor cores. The RTX card has 5.7 times the shading units and 5 times the texture units. Pixel rate is 154.6 GPixel/s for the RX 6650M and 285.6 GPixel/s for the RTX 4080 SUPER. Texture rate is 270.6 GTexel/s versus 816.0 GTexel/s. FP32 compute is 8.659 TFLOPS for the RX 6650M and 52.22 TFLOPS for the RTX 4080 SUPER, a 6x difference. FP16 is 17.32 TFLOPS for the RX 6650M (2:1 ratio) and 52.22 TFLOPS for the RTX 4080 SUPER (1:1 ratio). The RTX card also has dedicated tensor cores for AI workloads, which the RX 6650M lacks entirely.

Power and form factor differ significantly. The RX 6650M is rated at 120 W TDP, is an integrated form factor (IGP), and has no power connectors. The RTX 4080 SUPER is rated at 320 W TDP, is a triple-slot card, and requires a single 16-pin power connector with a suggested PSU of 700 W. The RX 6650M uses PCIe 4.0 x8, while the RTX 4080 SUPER uses PCIe 4.0 x16. The RTX card is 310 mm long, 140 mm high, and 61 mm wide, while the RX 6650M has no listed dimensions because it is a portable device dependent part.

The Verdict

The data is unambiguous: the RTX 4080 SUPER is the faster GPU by a massive margin. In the only two benchmark tests that both cards took, the RTX 4080 SUPER is 70% ahead in OpenCL and 70.1% ahead in Vulkan. The RTX 4080 SUPER also has 16 GB of memory versus 8 GB, higher bandwidth, more shading units, more ROPs, more RT cores, and a much higher compute throughput. If raw performance is the only criterion, the RTX 4080 SUPER wins every measurable category.

However, the RX 6650M is not without its place. It is a 120 W part with no power connectors, designed for laptops and portable devices. It ranks at the 91st percentile of all GPUs, which means it outperforms most discrete cards in the database, including several desktop cards like the NVIDIA TITAN X Pascal and the AMD Radeon Pro Vega 64. Its average benchmark score of 71,768 is actually higher than the RTX 4080 SUPER’s average of 54,209, though that is due to the RTX card’s low Passmark scores, which reflect different workloads.

For a user who needs a high-end desktop GPU, the RTX 4080 SUPER is the clear choice. For a user who needs a mobile GPU that can fit into a thin chassis, the RX 6650M is a reasonable option, but it will not come close to the RTX 4080 SUPER in compute performance.

FAQ

Q: Which GPU wins the OpenCL benchmark?

A: The NVIDIA GeForce RTX 4080 SUPER wins with a score of 219,065, which is 70% higher than the AMD Radeon RX 6650M’s score of 65,800.

Q: Which GPU has more memory bandwidth?

A: The RTX 4080 SUPER has 736.3 GB/s bandwidth, while the RX 6650M has 224.0 GB/s. The RTX card also has 16 GB of GDDR6X memory versus 8 GB of GDDR6.

Q: What are the average benchmark scores for both cards?

A: The RX 6650M has an average score of 71,768, while the RTX 4080 SUPER has an average of 54,209. The RTX 4080 SUPER’s average is lowered by its low Passmark G2D score of 1270 and other low Passmark results.

Q: How do the transistor counts compare?

A: The RTX 4080 SUPER has 45,900 million transistors, while the RX 6650M has 11,060 million. This is a factor of about 4.1.

Q: Does the RX 6650M have tensor cores?

A: No, the RX 6650M has no tensor cores, while the RTX 4080 SUPER has 320 tensor cores.

Q: What is the TDP of each card?

A: The RX 6650M is rated at 120 W, while the RTX 4080 SUPER is rated at 320 W.

Where Each One Wins

RTX 4080 SUPER wins in: Every head-to-head benchmark (OpenCL and Vulkan), memory size (16 GB vs 8 GB), memory bandwidth (736.3 vs 224.0 GB/s), shading units (10,240 vs 1,792), texture units (320 vs 112), ROPs (112 vs 64), RT cores (80 vs 28), tensor cores (320 vs 0), FP32 compute (52.22 vs 8.659 TFLOPS), FP16 compute (52.22 vs 17.32 TFLOPS), pixel rate (285.6 vs 154.6 GPixel/s), texture rate (816.0 vs 270.6 GTexel/s), and bus width (256-bit vs 128-bit). It also has a higher base clock (2295 vs 2068 MHz) and boost clock (2550 vs 2416 MHz).

RX 6650M wins in the following areas: It has a lower TDP (120 W vs 320 W), no power connector requirement (None vs 1x 16-pin), no suggested PSU (it is an IGP), a smaller die size (237 vs 379 mm²), lower transistor count (11,060 vs 45,900 million), and a higher transistor density per mm² is not true (46.7 vs 121.1). It also has a higher percentile ranking (91st vs 86th) and a higher average benchmark score (71,768 vs 54,209). It is also a portable device dependent part, meaning it is designed for laptops rather than desktops.

Specification Differences

The following fields differ between the two GPUs:

• Process node: 7 nm (RX 6650M) vs 5 nm (RTX 4080 SUPER)
• Transistors: 11,060 million vs 45,900 million
• Die size: 237 mm² vs 379 mm²
• Transistor density: 46.7M / mm² vs 121.1M / mm²
• Base clock: 2068 MHz vs 2295 MHz
• Boost clock: 2416 MHz vs 2550 MHz
• Memory clock: 1750 MHz (14 Gbps effective) vs 1438 MHz (23 Gbps effective)
• Memory size: 8 GB vs 16 GB
• Memory type: GDDR6 vs GDDR6X
• Bus width: 128 bit vs 256 bit
• Bandwidth: 224.0 GB/s vs 736.3 GB/s
• Shading units: 1792 vs 10240
• TMUs: 112 vs 320
• ROPs: 64 vs 112
• RT cores: 28 vs 80
• Tensor cores: null vs 320
• Pixel rate: 154.6 GPixel/s vs 285.6 GPixel/s
• Texture rate: 270.6 GTexel/s vs 816.0 GTexel/s
• FP32: 8.659 TFLOPS vs 52.22 TFLOPS
• FP16: 17.32 TFLOPS (2:1) vs 52.22 TFLOPS (1:1)
• TDP: 120 W vs 320 W
• Slot width: IGP vs Triple-slot
• Power connectors: None vs 1x 16-pin
• Suggested PSU: null vs 700 W
• Bus interface: PCIe 4.0 x8 vs PCIe 4.0 x16
• Display outputs: Portable Device Dependent vs 1x HDMI 2.13x DisplayPort 1.4a
• Dimensions: null vs 310 mm x 140 mm x 61 mm
• Release date: 2022-01-03 vs 2024-01-30
• Predecessor: Polaris Mobile vs GeForce 30
• Successor: null vs GeForce 50
• Launch MSRP: null vs 999 USD

The RTX 4080 SUPER also has a game clock that is not listed, while the RX 6650M has a game clock of 2222 MHz. The RTX card supports a larger memory bandwidth and is designed for desktop use with a triple-slot cooler and a 16-pin power connector, while the RX 6650M is a fully integrated mobile part. The data shows that these are not just different tiers of performance; they are different classes of hardware with different physical and electrical requirements.