AMD Radeon RX 6650M vs NVIDIA GeForce RTX 3090 Ti Comparison

Where Each One Wins

The benchmark data splits cleanly along compute and graphics workload lines, with the NVIDIA GeForce RTX 3090 Ti taking every recorded win. In Geekbench OpenCL, the RTX 3090 Ti scores 174,441 against 65,800 for the Radeon RX 6650M, a 165.1% advantage. That is a massive gap, and it reflects the fundamental difference in positioning between a desktop flagship and a mobile part. The Vulkan result tells the same story: 215,633 for the RTX 3090 Ti versus 77,735 for the RX 6650M, a 177.4% delta. If the workload is general compute or Vulkan graphics, the RTX 3090 Ti is not just ahead, it is in a different performance class.

The RX 6650M does not win any of the recorded head-to-head tests, but it still holds value in context. Its average benchmark score of 71,768 places it at the 91st percentile of all GPUs in the database, which is respectable for a mobile chip. The RTX 3090 Ti sits at the 95th percentile with an average score of 131,938. So while the RTX 3090 Ti dominates the direct comparisons, the RX 6650M is not a weak part in absolute terms. It belongs in a different tier, one aimed at portable systems where the 120 W power envelope is the defining constraint.

Where each one wins, then, is less about workload type and more about platform. The RTX 3090 Ti wins every benchmark it appears in because it is a 450 W desktop card with 24 GB of GDDR6X memory and a 384-bit bus. The RX 6650M wins the practical argument for laptops: it draws 120 W, requires no power connectors, and fits an IGP form factor. For a desktop builder with a triple-slot slot and an 850 W PSU recommendation, the RTX 3090 Ti is the obvious compute and graphics leader. For a mobile system, the RX 6650M is the only realistic choice between these two, because the RTX 3090 Ti cannot be mounted in a portable chassis at all.

Architecture Differences

The two GPUs come from different foundries and different design philosophies. The RTX 3090 Ti uses the GA102 chip on Samsung's 8 nm process, packing 28,300 million transistors into a 628 mm² die. Transistor density is 45.1 million per mm². The RX 6650M uses the Navi 23 chip on TSMC's 7 nm process, with 11,060 million transistors on a 237 mm² die, giving a density of 46.7 million per mm². Interestingly, the AMD chip has a slightly higher transistor density, but the NVIDIA chip has roughly 2.5 times the total transistor count and nearly 2.6 times the die area. That scale difference explains much of the performance gap.

Core counts diverge sharply. The RTX 3090 Ti has 10,752 shading units, 336 texture mapping units, and 112 ROPs. It also includes 84 RT cores and 336 tensor cores, the latter absent from the RX 6650M entirely. The RX 6650M has 1,792 shading units, 112 TMUs, and 64 ROPs, with 28 RT cores but no tensor core hardware. The FP32 throughput numbers reflect this: 40.00 TFLOPS for the RTX 3090 Ti versus 8.659 TFLOPS for the RX 6650M. On FP16, the RTX 3090 Ti maintains 40.00 TFLOPS at a 1:1 ratio, while the RX 6650M reaches 17.32 TFLOPS at a 2:1 ratio. The NVIDIA card has the raw shader horsepower, while the AMD card uses its RDNA 2.0 design to double FP16 throughput relative to FP32.

Memory architecture is another major split. The RTX 3090 Ti has 24 GB of GDDR6X on a 384-bit bus, delivering 1.01 TB/s of bandwidth. The RX 6650M has 8 GB of GDDR6 on a 128-bit bus, delivering 224.0 GB/s. That is a 4.5x bandwidth advantage for the NVIDIA card, which matters for high-resolution textures and compute workloads. Clock speeds tell a different story: the RX 6650M boosts to 2416 MHz with a 2222 MHz game clock, while the RTX 3090 Ti boosts to 1860 MHz with a 1560 MHz base. The AMD chip runs at higher frequencies, but the NVIDIA chip compensates with far more cores and memory bandwidth. The effective memory speeds are 21 Gbps for the RTX 3090 Ti and 14 Gbps for the RX 6650M.

API support is identical on paper: both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. The RTX 3090 Ti adds tensor cores and a 16-pin power connector, while the RX 6650M uses no external power and runs as an IGP. The RTX 3090 Ti is a triple-slot card measuring 336 mm in length, 140 mm in height, and 61 mm in width. The RX 6650M has no recorded dimensions and is marked as "Portable Device Dependent" for display outputs.

The Verdict

The verdict from the data is straightforward: the RTX 3090 Ti is the superior GPU by every measured metric, and the RX 6650M is the only one of the two that fits a laptop. If you are building a desktop and have the physical space and power delivery for a triple-slot, 450 W card, the RTX 3090 Ti is the pick. It wins OpenCL by 165.1% and Vulkan by 177.4%, and its average benchmark score of 131,938 places it in the 95th percentile of all GPUs. The RX 6650M, with its 91st percentile average score of 71,768, is a competent mobile part, but it is not a competitor to the RTX 3090 Ti in raw performance.

The nearest rival comparisons reinforce this. The RTX 3090 Ti sits within 0.7% of the NVIDIA L4 and within 2.6% of the AMD Radeon PRO W6800 in average score, meaning it trades blows with professional workstation cards. The RX 6650M sits within 0.5% of the NVIDIA TITAN X Pascal and within 2.2% of the AMD Radeon Vega Frontier Edition, which are older high-end parts. The gap between the two GPUs in this comparison is roughly the same as the gap between a modern workstation card and a previous-generation desktop flagship.

For a laptop buyer, the RX 6650M is the only option between these two, since the RTX 3090 Ti has no mobile form factor. For a desktop builder, the RTX 3090 Ti is the clear choice unless the system cannot accommodate a 336 mm long, triple-slot card or an 850 W PSU recommendation. The RX 6650M does have one practical edge: it uses no power connectors and has a 120 W TDP, which makes it suitable for systems where power and space are scarce. But the recorded data shows no workload where the RX 6650M beats the RTX 3090 Ti.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The RTX 3090 Ti has an average benchmark score of 131,938, placing it in the 95th percentile of all GPUs. The RX 6650M has an average score of 71,768, placing it in the 91st percentile.

Q: How large is the performance gap in OpenCL?

A: The RTX 3090 Ti scores 174,441 in Geekbench OpenCL, while the RX 6650M scores 65,800. That is a 165.1% advantage for the NVIDIA card.

Q: Does the RX 6650M support ray tracing?

A: Yes, it has 28 RT cores and supports DirectX 12 Ultimate (12_2), which includes ray tracing features. The RTX 3090 Ti has 84 RT cores and also supports DirectX 12 Ultimate.

Q: What are the memory specifications for each GPU?

A: The RTX 3090 Ti has 24 GB of GDDR6X on a 384-bit bus with 1.01 TB/s bandwidth. The RX 6650M has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth.

Q: Which GPU is better for a laptop?

A: The RX 6650M is designed for mobile systems with a 120 W TDP, an IGP form factor, and no power connectors. The RTX 3090 Ti is a triple-slot desktop card with a 450 W TDP and a 16-pin power connector, so it cannot fit in a laptop chassis.

Q: Is there any benchmark where the RX 6650M wins?

A: No. In the recorded head-to-head tests, the RTX 3090 Ti wins both Geekbench OpenCL and Geekbench Vulkan. The RX 6650M does not have a recorded victory in any direct comparison.

Head-to-Head Benchmarks

The two recorded head-to-head tests both go to the RTX 3090 Ti, and both by overwhelming margins. In Geekbench OpenCL, the RTX 3090 Ti posts 174,441 against 65,800 for the RX 6650M. The 165.1% delta means the NVIDIA card delivers more than 2.6 times the score of the AMD card. This is a compute-oriented test, and the RTX 3090 Ti's 10,752 shading units, 40.00 TFLOPS FP32 throughput, and 1.01 TB/s memory bandwidth all contribute to the result. The RX 6650M's 1,792 shading units and 8.659 TFLOPS FP32 throughput are competitive for a mobile chip, but they are not in the same league.

In Geekbench Vulkan, the margin grows even larger. The RTX 3090 Ti scores 215,633, while the RX 6650M scores 77,735. The 177.4% delta is the biggest win in the comparison. Vulkan workloads often stress memory bandwidth and raw geometry throughput, and the RTX 3090 Ti's 384-bit bus and 112 ROPs give it a strong advantage. The RX 6650M's 64 ROPs and 224.0 GB/s bandwidth limit its ceiling in this test. The RTX 3090 Ti also has 336 TMUs versus 112 for the RX 6650M, which helps with texture-heavy scenes.

The average benchmark scores tell a similar story. The RTX 3090 Ti averages 131,938, while the RX 6650M averages 71,768. That is a difference of roughly 60,170 points, or about 83.8% of the RX 6650M's entire average score. The RTX 3090 Ti's nearest rivals are all professional or workstation-class cards: the NVIDIA L4 at 131,072 (0.7% behind), the NVIDIA RTX 4000 Ada Generation at 135,218 (2.4% ahead), the NVIDIA A10M at 135,230 (2.4% ahead), and the AMD Radeon PRO W6800 at 135,396 (2.6% ahead). The RX 6650M's nearest rivals are older high-end desktop GPUs: the NVIDIA TITAN X Pascal at 72,098 (0.5% ahead), the AMD Radeon Pro Vega 64 at 72,379 (0.8% ahead), the AMD Radeon RX 6600 LE at 70,829 (1.3% behind), and the AMD Radeon Vega Frontier Edition at 73,370 (2.2% ahead).

The RTX 3090 Ti also has a 3DMark Steel Nomad DX12 score of 5,741, which is not directly compared to the RX 6650M in the head-to-head data, but it adds another data point for the NVIDIA card's DX12 performance. The RX 6650M has no recorded Steel Nomad score. Overall, the head-to-head results show a consistent and decisive performance advantage for the RTX 3090 Ti across compute and graphics APIs.

Specification Differences

The specification sheet highlights how different these two GPUs are in design intent. The RTX 3090 Ti uses the GA102 chip on Samsung's 8 nm process with 28,300 million transistors and a 628 mm² die. The RX 6650M uses the Navi 23 chip on TSMC's 7 nm process with 11,060 million transistors and a 237 mm² die. Transistor density is nearly identical: 45.1M per mm² for NVIDIA versus 46.7M per mm² for AMD.

Clock speeds favor the AMD chip. The RX 6650M has a 2068 MHz base clock, a 2416 MHz boost clock, and a 2222 MHz game clock. The RTX 3090 Ti has a 1560 MHz base clock and an 1860 MHz boost clock. Memory speeds also differ: the RTX 3090 Ti runs at 1313 MHz with 21 Gbps effective, while the RX 6650M runs at 1750 MHz with 14 Gbps effective.

Memory capacity and bandwidth heavily favor the RTX 3090 Ti. It has 24 GB of GDDR6X on a 384-bit bus with 1.01 TB/s bandwidth. The RX 6650M has 8 GB of GDDR6 on a 128-bit bus with 224.0 GB/s bandwidth. The NVIDIA card has 10,752 shading units, 336 TMUs, 112 ROPs, 84 RT cores, and 336 tensor cores. The AMD card has 1,792 shading units, 112 TMUs, 64 ROPs, and 28 RT cores, with no tensor cores.

Power and physical design are opposite extremes. The RTX 3090 Ti has a 450 W TDP, a triple-slot form factor, a 16-pin power connector, and a suggested PSU of 850 W. It measures 336 mm by 140 mm by 61 mm. The RX 6650M has a 120 W TDP, an IGP form factor, no power connectors, and no suggested PSU. It has no recorded dimensions and its display outputs are listed as portable device dependent. Both support PCIe 4.0, but the RTX 3090 Ti uses x16 while the RX 6650M uses x8. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, and both are listed as end-of-life production status. The RTX 3090 Ti has a recorded launch MSRP of 1,999 USD, while the RX 6650M has no recorded launch MSRP.