AMD Radeon RX 6650M vs NVIDIA Quadro P6000 Comparison

The AMD Radeon RX 6650M and NVIDIA Quadro P6000 are both end-of-life GPUs that land at opposite ends of the computing spectrum: one is a modern, power-sipping mobile part, and the other is a legacy, high-power workstation behemoth. Benchmark results show a split decision: the Quadro P6000 edges out the RX 6650M in OpenCL, while the RX 6650M decisively wins in Vulkan. The data suggests that the choice between them hinges entirely on the application’s API and workload demands, with the RX 6650M offering better modern API performance and the Quadro P6000 countering with massive memory capacity and raw shading throughput.

Head-to-Head Benchmarks

The benchmark data presents a clear divide between the two GPUs based on the API used. In the geekbench_opencl test, the NVIDIA Quadro P6000 scores 66,382, narrowly defeating the AMD Radeon RX 6650M’s 65,800. This translates to a -0.9% delta for the AMD card, a margin so small that it falls within typical run-to-run variance. The Quadro’s win here is nominal, but it does establish a baseline of general-purpose compute capability where the older Pascal architecture still holds its ground. The RX 6650M’s average benchmark score is 71,768, which is 2.5% higher than the Quadro’s 69,986, indicating that the AMD card performs better across a broader set of tests, even if it loses this specific OpenCL run.

The more dramatic result comes in geekbench_vulkan, where the AMD Radeon RX 6650M scores 77,735 against the Quadro P6000’s 73,590. This gives the AMD card a substantial 5.6% victory, a significant margin that highlights the architectural advantage of RDNA 2.0 in modern, low-level APIs. The Quadro’s Pascal architecture, which predates Vulkan’s widespread adoption, simply cannot match the newer design’s efficiency in this workload. The RX 6650M’s Vulkan score is also notably higher than its own OpenCL result, suggesting that the card is particularly well-optimized for this API, whereas the Quadro shows more balanced but lower performance across both tests.

Looking at the broader competitive landscape, the RX 6650M’s average score of 71,768 places it just 0.5% behind the NVIDIA TITAN X Pascal and 0.8% behind the AMD Radeon Pro Vega 64, while sitting 1.3% ahead of the AMD Radeon RX 6600 LE. The Quadro P6000’s average of 69,986 puts it 0.2% ahead of the AMD Radeon Pro WX 8200 and 1.4% ahead of the NVIDIA CMP 90HX, but 1.2% behind the RX 6600 LE. These figures show that both cards are competitive with similar-generation high-end parts, with the RX 6650M holding a slight edge in overall average performance.

Architecture Differences

The architectural gap between these two GPUs is vast, stemming from nearly a decade of design evolution. The AMD Radeon RX 6650M uses the Navi 23 chip built on RDNA 2.0 architecture, fabricated on TSMC’s 7 nm process. This modern node allows for a transistor density of 46.7M / mm², packing 11,060 million transistors into a compact 237 mm² die. In contrast, the NVIDIA Quadro P6000 uses the GP102 chip on the older Pascal architecture, built on a 16 nm process at the same foundry. This results in a much lower transistor density of 25.1M / mm², with 11,800 million transistors spread across a massive 471 mm² die. The RX 6650M’s newer process node gives it a significant efficiency advantage, allowing similar transistor counts in half the physical space.

The memory architectures are equally divergent. The RX 6650M features 8 GB of GDDR6 memory on a 128-bit bus, providing 224.0 GB/s of bandwidth. The Quadro P6000, by contrast, offers 24 GB of GDDR5X on a 384-bit bus, delivering 432.8 GB/s — nearly double the bandwidth and triple the capacity. Clock speeds tell the opposite story: the RX 6650M runs at a base of 2068 MHz and boosts to 2416 MHz, while the Quadro P6000 operates at a much lower 1506 MHz base and 1645 MHz boost. The AMD card’s higher clocks partially compensate for its narrower memory bus, but the Quadro’s sheer memory bandwidth remains a dominant advantage for large datasets.

Compute resources differ in raw count but not necessarily in efficiency. The Quadro P6000 has 3840 shading units, 240 texture mapping units, and 96 render output units, compared to the RX 6650M’s 1792 shading units, 112 TMUs, and 64 ROPs. However, the RX 6650M includes 28 dedicated ray tracing cores, a feature entirely absent from the Pascal-based Quadro. The FP32 throughput favors the Quadro at 12.63 TFLOPS versus the RX 6650M’s 8.659 TFLOPS, but in FP16 the tables turn dramatically: the RX 6650M delivers 17.32 TFLOPS with a 2:1 ratio, while the Quadro manages only 197.4 GFLOPS at a 1:64 ratio. This makes the AMD card vastly superior for mixed-precision workloads.

Where Each One Wins

The data points to distinct use-case advantages for each GPU. The AMD Radeon RX 6650M wins decisively in Vulkan applications, with its 5.6% lead in that benchmark being the single largest margin between the two. This makes it the better choice for modern gaming, especially titles that leverage Vulkan’s low-overhead design, and for any compute tasks that utilize this API. The presence of ray tracing cores also gives it a future-proofing advantage for applications that support hardware-accelerated ray tracing, a feature the Quadro cannot offer. Its 7 nm process and 120 W TDP also make it far more power-efficient, suitable for thin-and-light laptops where thermal headroom is limited.

The NVIDIA Quadro P6000 wins in OpenCL, a common API for professional workloads like scientific computing, engineering simulation, and content creation. Its 24 GB of memory is its trump card, allowing it to handle datasets that would completely overwhelm the RX 6650M’s 8 GB frame buffer. The 432.8 GB/s of memory bandwidth further supports this advantage, making it ideal for large-scale data processing, high-resolution texture work, and multi-display professional setups. Its higher FP32 throughput of 12.63 TFLOPS also gives it an edge in raw compute tasks that don’t require modern API features. For workstation use where OpenCL is the standard, the Quadro’s reliability and massive memory pool make it the safer choice.

Specification Differences

The two cards diverge on nearly every measurable specification. The process node differs significantly: 7 nm for the RX 6650M versus 16 nm for the Quadro P6000. Transistor counts are close at 11,060 million versus 11,800 million, but die size is vastly different at 237 mm² versus 471 mm², leading to transistor densities of 46.7M / mm² and 25.1M / mm², respectively. Memory is a major differentiator: 8 GB GDDR6 on a 128-bit bus for the AMD card, versus 24 GB GDDR5X on a 384-bit bus for the NVIDIA card. Bandwidth follows suit at 224.0 GB/s versus 432.8 GB/s.

Clock speeds favor the AMD card heavily: base clocks are 2068 MHz versus 1506 MHz, and boost clocks are 2416 MHz versus 1645 MHz. The RX 6650M also has a defined game clock of 2222 MHz, which the Quadro lacks. Compute unit counts show the Quadro with more shading units (3840 vs 1792), TMUs (240 vs 112), and ROPs (96 vs 64), but the RX 6650M has 28 ray tracing cores to the Quadro’s none. Pixel rates are nearly identical at 154.6 GPixel/s for the AMD card versus 157.9 GPixel/s for the NVIDIA card, but texture rates differ: 270.6 GTexel/s versus 394.8 GTexel/s.

Power and physical specifications are polar opposites. The RX 6650M is an IGP with a 120 W TDP and no power connectors, while the Quadro P6000 is a dual-slot card with a 250 W TDP and a single 8-pin power connector, requiring a 600 W power supply. The bus interface also differs: PCIe 4.0 x8 for the AMD card versus PCIe 3.0 x16 for the NVIDIA card. Display outputs are portable-device-dependent for the RX 6650M, while the Quadro offers 1x DVI and 4x DisplayPort 1.4a. The Quadro measures 267 mm in length and 111 mm in height.

FAQ

Q: Which GPU has higher overall average benchmark scores?

A: The AMD Radeon RX 6650M has an average benchmark score of 71,768, which is 2.5% higher than the NVIDIA Quadro P6000’s 69,986.

Q: How do the two GPUs compare in Vulkan performance?

A: The AMD Radeon RX 6650M scores 77,735 in the geekbench Vulkan test, which is 5.6% higher than the NVIDIA Quadro P6000’s 73,590.

Q: What is the memory capacity difference?

A: The NVIDIA Quadro P6000 has 24 GB of GDDR5X memory, which is three times the 8 GB of GDDR6 memory found on the AMD Radeon RX 6650M.

Q: Does the AMD Radeon RX 6650M support ray tracing?

A: Yes, the AMD Radeon RX 6650M has 28 ray tracing cores, while the NVIDIA Quadro P6000 has none.

Q: What are the power consumption figures for each card?

A: The AMD Radeon RX 6650M has a TDP of 120 W, while the NVIDIA Quadro P6000 has a TDP of 250 W and requires a 600 W power supply.

Q: Which GPU has a smaller die size?

A: The AMD Radeon RX 6650M has a die size of 237 mm², compared to the NVIDIA Quadro P6000’s 471 mm².

The Verdict

The data supports a clear, workload-dependent recommendation. For users whose primary applications rely on Vulkan or require hardware ray tracing, the AMD Radeon RX 6650M is the superior choice. Its 5.6% lead in Vulkan benchmarks, combined with its 28 ray tracing cores and significantly lower 120 W power draw, makes it the more modern and efficient solution. Its smaller die size and 7 nm process also indicate better thermal characteristics for compact systems. The 8 GB memory may be limiting for some tasks, but for mainstream gaming and API-forward compute, it is sufficient.

For professional workstation environments that depend on OpenCL and demand massive memory capacity, the NVIDIA Quadro P6000 remains relevant despite its age. Its 24 GB frame buffer and 432.8 GB/s bandwidth are unmatched by the RX 6650M, and its 12.63 TFLOPS FP32 performance provides raw compute headroom. The Quadro’s 0.9% OpenCL win over the RX 6650M, while narrow, validates its continued utility in legacy professional pipelines. However, its 250 W TDP, dual-slot size, and PCIe 3.0 interface are dated, and its lack of ray tracing support limits future-proofing. Ultimately, the RX 6650M is the better all-around performer with a higher average benchmark score, but the Quadro P6000 is the only choice when memory capacity is the deciding factor.