AMD Radeon RX 6650M vs NVIDIA RTX 4500 Ada Generation Comparison

The NVIDIA RTX 4500 Ada Generation and the AMD Radeon RX 6650M occupy very different corners of the graphics hardware landscape. The recorded data shows a desktop workstation part designed for sustained professional workloads, while the AMD chip is a mobile solution aimed at thin-and-light gaming laptops. Their benchmark scores, architectural choices, and physical characteristics diverge sharply, making the comparison a study in purpose-built design rather than a close contest.

FAQ

Q: How large is the performance gap between these two GPUs in the recorded benchmarks?

A: The NVIDIA RTX 4500 Ada Generation leads by 144.4% in Geekbench OpenCL and by 120.5% in Geekbench Vulkan, based on the head-to-head measurements.

Q: Which GPU has the higher average benchmark score?

A: The NVIDIA RTX 4500 Ada Generation records an average score of 166094, placing it in the 97th percentile among all GPUs. The AMD Radeon RX 6650M averages 71768, which sits in the 91st percentile.

Q: What are the closest rivals to each card according to the database?

A: For the NVIDIA part, the nearest rivals are the NVIDIA RTX A5500 (0.5% lower average score), the AMD Radeon PRO W7800 (0.7% lower), and the AMD Radeon Pro W6900X (1.5% higher). For the AMD mobile chip, the closest competitors include the NVIDIA TITAN X Pascal (0.5% higher), the AMD Radeon Pro Vega 64 (0.8% higher), and the AMD Radeon RX 6600 LE (1.3% lower).

Q: How do the memory subsystems compare?

A: The NVIDIA card offers 24 GB of GDDR6 on a 192-bit bus, delivering 432.0 GB/s of bandwidth. The AMD chip provides 8 GB of GDDR6 on a 128-bit bus, with 224.0 GB/s of bandwidth.

Q: What is the difference in transistor count and die size?

A: The NVIDIA AD103 chip contains 45,900 million transistors on a 379 mm² die, while the AMD Navi 23 has 11,060 million transistors on a 237 mm² die. This results in a transistor density of 121.1M per mm² for NVIDIA versus 46.7M per mm² for AMD.

Q: Which card has a higher boost clock?

A: The NVIDIA RTX 4500 Ada Generation boosts to 2580 MHz, while the AMD Radeon RX 6650M boosts to 2416 MHz. The AMD card also lists a game clock of 2222 MHz, a figure not provided for the NVIDIA part.

Architecture Differences

The two GPUs represent fundamentally different design philosophies. The NVIDIA RTX 4500 Ada Generation uses the AD103 chip built on TSMC's 5 nm process, with an Ada Lovelace architecture. The AMD Radeon RX 6650M relies on the Navi 23 chip fabricated on TSMC's 7 nm process, using the RDNA 2.0 architecture. The process node difference directly contributes to the transistor density gap: NVIDIA packs 121.1M transistors per square millimeter versus AMD's 46.7M, a 2.6x density advantage.

Compute resources differ dramatically. The NVIDIA card features 7680 shading units, 240 texture mapping units, and 80 raster operation units. It also includes 60 ray tracing cores and 240 tensor cores, the latter being absent from the AMD specification. The AMD chip has 1792 shading units, 112 TMUs, 64 ROPs, and 28 ray tracing cores, with no tensor core listing. This means the NVIDIA part delivers roughly 4.3x the shader throughput and 2.1x the TMUs.

Clock speeds are closer than the compute counts suggest. The NVIDIA base clock is 2070 MHz with a boost of 2580 MHz, while the AMD base is 2068 MHz with a boost of 2416 MHz. The AMD part also reports a game clock of 2222 MHz, a metric that the NVIDIA specification does not include. Despite similar clocks, the raw throughput numbers diverge because of the massive difference in execution units.

The memory architecture reinforces the gap. NVIDIA uses 24 GB of GDDR6 on a 192-bit bus, running at 2250 MHz with 18 Gbps effective speed, yielding 432.0 GB/s. AMD pairs 8 GB of GDDR6 with a 128-bit bus at 1750 MHz (14 Gbps effective), resulting in 224.0 GB/s. The NVIDIA card has exactly double the memory bandwidth and three times the capacity.

Form factor and power also separate them. The NVIDIA part is a dual-slot, 245 mm long, 112 mm tall card requiring a 550 W suggested power supply and drawing 210 W TDP. It draws power through the PCIe slot with no external connectors. The AMD chip is an integrated GPU (IGP) with a 120 W TDP, no listed dimensions, and no suggested PSU, designed for portable devices. The NVIDIA card targets desktop workstations, while the AMD chip lives inside laptops.

Head-to-Head Benchmarks

The recorded head-to-head results show a decisive NVIDIA victory in both tested workloads. In Geekbench OpenCL, the NVIDIA RTX 4500 Ada Generation scores 160786 against the AMD Radeon RX 6650M's 65800, a delta of 144.4%. That means the NVIDIA card delivers nearly two and a half times the OpenCL performance of the AMD mobile chip.

The Vulkan results follow a similar pattern. NVIDIA scores 171401, while AMD manages 77735, producing a 120.5% advantage for the desktop part. The Vulkan gap is slightly smaller than the OpenCL gap, but the ordering remains unambiguous: the NVIDIA card is roughly 2.2x faster in Vulkan and 2.4x faster in OpenCL.

These numbers align with the broader average benchmark scores. The NVIDIA part averages 166094, which is 97th percentile among all GPUs. The AMD chip averages 71768, sitting at the 91st percentile. The percentile difference might seem modest (6 points), but the absolute score gap is large: the NVIDIA average is 131.4% higher than the AMD average.

The nearest rivals confirm that the NVIDIA card competes in a much higher performance tier. Its closest competitors include the NVIDIA RTX A5500 (165217 average, 0.5% lower), the AMD Radeon PRO W7800 (164894, 0.7% lower), and the AMD Radeon Pro W6900X (168574, 1.5% higher). The AMD Radeon RX 6650M, by contrast, sits near the NVIDIA TITAN X Pascal (72098, 0.5% higher), the AMD Radeon Pro Vega 64 (72379, 0.8% higher), and the AMD Radeon RX 6600 LE (70829, 1.3% lower). The two cards' nearest rival pools do not overlap at all.

The wins tally reflects this: the NVIDIA card wins both head-to-head tests, while the AMD card wins none. There is no workload in the recorded data where the AMD chip comes out ahead, even by a small margin.

The Verdict

The data points to a clear conclusion: the NVIDIA RTX 4500 Ada Generation is the superior GPU for raw compute performance. Its OpenCL and Vulkan scores are more than double those of the AMD Radeon RX 6650M, and its average benchmark score places it in the 97th percentile versus the AMD chip's 91st. For any workload that relies on the measured APIs, the NVIDIA card is the unambiguous choice.

However, the comparison must account for intended use. The NVIDIA card is a desktop workstation part with a dual-slot cooler, a 245 mm length, and a 210 W TDP. It requires a 550 W power supply and uses PCIe 4.0 x16. The AMD chip is an integrated GPU for mobile devices, with a 120 W TDP and no standalone dimensions, designed to be soldered into laptops. These are not interchangeable products.

A user building a desktop workstation should select the NVIDIA RTX 4500 Ada Generation without hesitation. Its 24 GB memory, 432.0 GB/s bandwidth, and 60 ray tracing cores make it suitable for professional rendering, simulation, and AI-adjacent tasks. The 240 tensor cores, absent on the AMD part, add further utility for workloads that leverage them.

A laptop buyer, conversely, has no choice between these two cards in the traditional sense. The AMD Radeon RX 6650M is an end-of-life mobile part (released January 2022, no successor listed), while the NVIDIA card is an active desktop product. The AMD chip's 91st percentile standing means it is still competitive among all GPUs, but its 8 GB memory and 224.0 GB/s bandwidth limit its headroom for large datasets.

The production status tells part of the story. The NVIDIA card is marked as active, with a predecessor in Workstation Ampere and a successor in Blackwell PRO W. The AMD chip is end-of-life, with a predecessor in Polaris Mobile and no successor. This suggests the NVIDIA part has a longer support horizon, while the AMD chip may be winding down.

Specification Differences

The two GPUs differ in nearly every measurable specification. The manufacturing process: NVIDIA uses 5 nm TSMC, AMD uses 7 nm TSMC. Transistor count: 45,900 million versus 11,060 million. Die size: 379 mm² versus 237 mm². Transistor density: 121.1M per mm² versus 46.7M per mm².

Clocks: NVIDIA base 2070 MHz, boost 2580 MHz, memory 2250 MHz (18 Gbps effective). AMD base 2068 MHz, boost 2416 MHz, game 2222 MHz, memory 1750 MHz (14 Gbps effective). The NVIDIA card lacks a game clock, while the AMD card lacks a listed memory effective speed in the same format, though 14 Gbps is recorded.

Memory: NVIDIA 24 GB GDDR6 on 192-bit with 432.0 GB/s. AMD 8 GB GDDR6 on 128-bit with 224.0 GB/s. Compute units: NVIDIA 7680 shaders, 240 TMUs, 80 ROPs, 60 RT cores, 240 tensor cores. AMD 1792 shaders, 112 TMUs, 64 ROPs, 28 RT cores, no tensor cores.

Pixel and texture rates: NVIDIA 206.4 GPixel/s and 619.2 GTexel/s. AMD 154.6 GPixel/s and 270.6 GTexel/s. FP32 throughput: NVIDIA 39.63 TFLOPS, AMD 8.659 TFLOPS. FP16: NVIDIA 39.63 TFLOPS (1:1), AMD 17.32 TFLOPS (2:1). The NVIDIA card maintains a 1:1 ratio between FP32 and FP16, while AMD halves its FP16 rate relative to FP32.

Power and physical: NVIDIA TDP 210 W, dual-slot, no power connectors, suggested PSU 550 W, PCIe 4.0 x16, 4x DisplayPort 1.4a, 245 mm length, 112 mm height. AMD TDP 120 W, IGP form factor, no power connectors, no suggested PSU, PCIe 4.0 x8, portable device dependent outputs, no dimensions listed.

Release timeline: NVIDIA announced August 8, 2023, AMD announced January 3, 2022. NVIDIA is active, AMD is end-of-life. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Where Each One Wins

The NVIDIA RTX 4500 Ada Generation wins in every measured benchmark category. Its OpenCL advantage of 144.4% and Vulkan advantage of 120.5% are decisive. The card's 24 GB memory capacity makes it suitable for large-scale rendering, scientific computing, and machine learning inference where datasets exceed 8 GB. The 432.0 GB/s bandwidth supports high-resolution textures and multi-display setups, with four DisplayPort 1.4a outputs available.

The NVIDIA card's 240 tensor cores provide a hardware path for tensor-heavy workloads, a feature the AMD chip lacks entirely. Its 60 ray tracing cores, while not directly benchmarked here, suggest stronger dedicated RT performance than the AMD part's 28 cores. The 1:1 FP32 to FP16 ratio means the NVIDIA card does not penalize FP16 compute, whereas the AMD chip runs FP16 at half rate.

The AMD Radeon RX 6650M wins only in power efficiency and portability. Its 120 W TDP is considerably lower than the NVIDIA card's 210 W, making it feasible for laptop thermal designs. The IGP form factor means it fits into thin chassis with no separate power connectors. The base clock of 2068 MHz is nearly identical to the NVIDIA card's 2070 MHz, showing that AMD achieves respectable frequency within a much smaller power envelope.

The AMD card also holds a narrower die size advantage in relative terms: 237 mm² versus 379 mm², making it cheaper to manufacture per wafer, though this is not a consumer-facing metric. Its 91st percentile ranking means it still outperforms the majority of GPUs in the database, so it is not a weak part in absolute terms.

For use cases, the split is clear. Desktop workstations, professional visualization, compute-heavy rendering, and tensor-accelerated workloads favor the NVIDIA RTX 4500 Ada Generation. Mobile gaming, light productivity, and power-constrained environments favor the AMD Radeon RX 6650M, though its end-of-life status limits future driver optimizations. The NVIDIA card's active production and successor roadmap suggest longer-term software support. The data does not support any scenario where the AMD chip outperforms the NVIDIA card in raw throughput, but it does show a viable mobile solution for users who prioritize battery life and portability over compute supremacy.