AMD Radeon Pro 450 vs AMD Radeon RX 6500 XT Comparison

The AMD Radeon RX 6500 XT and the AMD Radeon Pro 450 occupy opposite ends of the GPU spectrum, yet both are end-of-life products. The data reveals an absolute dominance by the newer card, but the story is more nuanced when considering their intended roles. The RX 6500 XT, a RDNA 2.0 part for the consumer market, outperforms the mobile workstation-oriented Pro 450 by a staggering margin in shared tests, yet the Pro 450’s legacy in Apple systems and its unique feature set warrant a closer look at what the numbers truly represent.

Head-to-Head Benchmarks

The head-to-head results are not a contest; they are a demolition. In the two benchmarks both cards share, the RX 6500 XT wins by a landslide. In Geekbench OpenCL, the RX 6500 XT scores 48,289 points against the Pro 450’s 9,002 points, a delta of 436.4%. This means the newer card is over five times faster in this compute-heavy workload. The Vulkan test tells a similar story: the RX 6500 XT posts 54,724 points versus 10,518 points, a 420.3% advantage. These are not incremental gains; they represent a generational leap in raw throughput.

Looking at the absolute scores, the RX 6500 XT’s average benchmark score of 11,842 places it in the 51st percentile of all GPUs. Its nearest rival, the NVIDIA GeForce GTX 1080, averages 11,960, putting the RX 6500 XT just 1% behind that flagship. Conversely, the Pro 450’s average score of 10,804 puts it in the 49th percentile, with its closest competitor being the NVIDIA Quadro K2200 at 10,761, a 0.4% difference. This positioning suggests that while the Pro 450 is not a slouch in its own right, it is competing in a much slower league. The RX 6500 XT is not just beating the Pro 450; it is performing at a level that rivals a GTX 1080, while the Pro 450 is fighting with entry-level GeForce MX350 parts.

Architecture Differences

The fundamental gap between these two cards is architectural. The RX 6500 XT is built on the RDNA 2.0 architecture, fabricated on a 6 nm process at TSMC. This is a stark contrast to the Pro 450, which uses the older GCN 4.0 architecture on a 14 nm process from GlobalFoundries. The transistor counts reflect this: the RX 6500 XT packs 5,400 million transistors into a 107 mm² die, achieving a transistor density of 50.5M / mm². The Pro 450, in comparison, has 3,000 million transistors on a larger 123 mm² die, resulting in a much lower density of 24.4M / mm². This process advantage alone explains a significant portion of the performance delta.

The compute resources differ massively. The RX 6500 XT features 1,024 shading units, 64 TMUs, and 32 ROPs, while the Pro 450 has only 640 shading units, 40 TMUs, and 16 ROPs. Furthermore, the RX 6500 XT includes 16 dedicated ray tracing cores, a feature entirely absent from the Pro 450. This is a defining hardware difference: the newer card is built for DirectX 12 Ultimate (12_2), whereas the Pro 450 only supports DirectX 12 (12_0). For raw compute, the RX 6500 XT delivers 5.765 TFLOPS FP32, while the Pro 450 manages just 1,024.0 GFLOPS—a fivefold difference. The RX 6500 XT also doubles its FP16 throughput to 11.53 TFLOPS (2:1), whereas the Pro 450’s FP16 is identical to its FP32 at 1,024.0 GFLOPS (1:1), indicating a lack of specialized half-precision hardware.

Where Each One Wins

The data is unambiguous: the RX 6500 XT wins every single shared benchmark. It has 2 wins and 0 losses. The only benchmark the Pro 450 has that the RX 6500 XT lacks is Geekbench Metal, where it scores 12,893. This is the Pro 450’s only claim to relevance, as Metal is Apple’s graphics API, and this card was designed for Mac systems. The RX 6500 XT has no Metal score listed, suggesting it was not targeted at that ecosystem.

For gaming and general 3D rendering, the RX 6500 XT is the clear winner. Its Passmark G3D score of 9,608 dwarfs what the Pro 450’s architecture could likely produce, and its DirectX 12 Ultimate support ensures future compatibility. The Pro 450, however, wins in the specific niche of legacy Mac compatibility. Its MXM Module form factor and "Portable Device Dependent" display outputs indicate it is a soldered-in component for laptops, not a user-upgradeable desktop part. Therefore, the Pro 450 wins where it matters for its intended audience: existing Apple hardware that requires a specific proprietary card. The RX 6500 XT wins everywhere else, particularly in modern gaming and high-throughput compute workloads like OpenCL and Vulkan.

Specification Differences

Beyond the performance metrics, the core specifications tell a tale of two very different design philosophies. The RX 6500 XT features 4 GB of GDDR6 memory on a 64-bit bus, yielding 143.9 GB/s of bandwidth. The Pro 450 uses 2 GB of GDDR5 on a 128-bit bus, resulting in 81.28 GB/s. While the Pro 450 has a wider bus, the RX 6500 XT compensates with much faster memory clocks (2248 MHz vs 1270 MHz) and newer memory technology, achieving nearly double the bandwidth. The RX 6500 XT also has a significantly higher pixel rate (90.08 GPixel/s vs 12.80 GPixel/s) and texture rate (180.2 GTexel/s vs 32.00 GTexel/s).

Power consumption is another stark divider. The RX 6500 XT has a 107 W TDP, requires a 1x 6-pin power connector, and suggests a 300 W PSU. It is a dual-slot card. The Pro 450, in contrast, sips power at just 35 W TDP and requires no external power connectors, fitting into an MXM Module slot. This makes the Pro 450 ideal for thin, power-constrained laptops, while the RX 6500 XT is a desktop-only part. The bus interface also differs: the RX 6500 XT uses PCIe 4.0 x4, while the Pro 450 is limited to PCIe 3.0 x8. Despite having fewer lanes, the newer PCIe 4.0 standard provides higher per-lane bandwidth. Finally, the RX 6500 XT offers 1x HDMI 2.1 and 1x DisplayPort 1.4a outputs, while the Pro 450’s outputs are "Portable Device Dependent," meaning they are wired directly to the laptop’s display, not user-accessible ports.

FAQ

Q: How much faster is the RX 6500 XT in Geekbench OpenCL?

A: The RX 6500 XT scores 48,289, which is 436.4% higher than the Pro 450’s 9,002 score in the same test.

Q: Does the Radeon Pro 450 support ray tracing?

A: No. The Pro 450 has no ray tracing cores listed, while the RX 6500 XT includes 16 dedicated RT cores.

Q: Which card has higher memory bandwidth?

A: The RX 6500 XT has 143.9 GB/s of bandwidth, compared to the Pro 450’s 81.28 GB/s, despite the Pro 450 having a wider 128-bit bus versus the RX 6500 XT’s 64-bit bus.

Q: What is the process node difference?

A: The RX 6500 XT uses a 6 nm process at TSMC, while the Pro 450 uses a 14 nm process at GlobalFoundries.

Q: Is the Pro 450 suitable for modern gaming?

A: Benchmark data suggests no. It lacks DirectX 12 Ultimate support (only 12_0), has a low pixel rate of 12.80 GPixel/s, and no ray tracing cores, making it far behind modern standards.

Q: What is the power consumption difference?

A: The RX 6500 XT has a TDP of 107 W, while the Pro 450 draws only 35 W.

The Verdict

The data is decisive for anyone building a new system: the AMD Radeon RX 6500 XT is the superior performer in every measured category. Its 5.765 TFLOPS FP32 compute, 16 ray tracing cores, and 436.4% lead in OpenCL make it the only rational choice for gaming, 3D rendering, or general compute on a desktop. Its average score of 11,842 places it near the GTX 1080, proving it is a capable modern GPU despite its small 4 GB memory footprint. The 107 W TDP and 6-pin connector are modest requirements for the performance offered.

The AMD Radeon Pro 450, however, is not without purpose. Its 35 W TDP and MXM Module form factor are ideal for ultra-portable workstation laptops, particularly those within the Apple ecosystem where its Geekbench Metal score of 12,893 is relevant. For users maintaining legacy Mac hardware, the Pro 450 is the only option that fits. But for any task that involves Vulkan or OpenCL, the RX 6500 XT is simply in a different universe. The verdict is clear: choose the RX 6500 XT for performance, and choose the Pro 450 only if you are locked into a specific proprietary platform that requires it.