AMD Radeon RX 6800M vs NVIDIA RTX PRO 4500 Blackwell Comparison

Head-to-Head Benchmarks

The recorded data shows a completely one-sided contest. The NVIDIA RTX PRO 4500 Blackwell wins all nine head-to-head benchmark comparisons against the AMD Radeon RX 6800M. The largest margin comes in compute workloads, where the NVIDIA card scores 19,255 in Passmark GPU Compute versus 5,032 for the AMD part, a delta of 282.7%. That is not a small gap; it is a category difference for any task that relies on raw shader throughput.

In 3DMark Steel Nomad DX12, the NVIDIA card posts 7,025 points against 2,238 for the AMD card, a 213.9% advantage. This test is a modern DirectX 12 workload, so it reflects current-generation gaming and rendering performance rather than legacy API behavior. The NVIDIA card also dominates in Vulkan, scoring 221,768 in Geekbench Vulkan versus 94,766 for the AMD card, a 134% delta. Vulkan is commonly used in cross-platform game engines and compute applications, so this result matters for real-world software.

The legacy DirectX tests show the same pattern but with different magnitudes. In Passmark DirectX 9, the NVIDIA card scores 397 versus 147, a 170.1% delta. Passmark DirectX 11 shows 320 versus 127, a 152% delta. DirectX 10 shows 204 versus 101, a 102% delta. DirectX 12 shows 119 versus 65, an 83.1% delta. The gap narrows somewhat in the newest API, but the NVIDIA card still leads by a wide margin.

The 2D performance gap is also substantial. Passmark G2D scores 1,336 for the NVIDIA card versus 538 for the AMD card, a 148.3% delta. This covers desktop compositing, window management, and other 2D workloads. The overall 3D score in Passmark G3D shows 33,360 for NVIDIA versus 13,261 for AMD, a 151.6% delta. Every benchmark in the head-to-head set, regardless of API or workload type, concludes with the same winner.

The average benchmark score in the database reinforces this. The NVIDIA RTX PRO 4500 Blackwell averages 31,532 across all recorded tests, while the AMD Radeon RX 6800M averages 28,874. The NVIDIA card sits at the 76th percentile among all GPUs, and the AMD card sits at the 74th percentile. Both are high in the overall distribution, but the NVIDIA card occupies a higher position despite the much larger head-to-head margins. The nearest rivals for the NVIDIA card include the NVIDIA TITAN RTX with an average score of 31,676 (a 0.5% deficit) and the Intel Arc Pro A30M at 31,894 (a 1.1% deficit). The AMD card's nearest rivals are the AMD Radeon RX 570 at 28,766 (a 0.4% lead) and the AMD Radeon RX 470 at 28,996 (a 0.4% deficit).

Architecture Differences

The two cards come from entirely different design philosophies. The NVIDIA RTX PRO 4500 Blackwell uses the GB203 chip built on a 5 nm process at TSMC. It packs 45,600 million transistors into a 378 mm² die, yielding a transistor density of 120.6 million per mm². The AMD Radeon RX 6800M uses the Navi 22 chip on a 7 nm process, also at TSMC. It contains 17,200 million transistors on a 335 mm² die, giving a density of 51.3 million per mm². The NVIDIA chip is larger in transistor count, more densely packed, and built on a more advanced node.

The memory subsystems differ even more dramatically. The NVIDIA card ships with 32 GB of GDDR7 memory on a 256-bit bus, delivering 896.0 GB/s of bandwidth. The AMD card has 12 GB of GDDR6 memory on a 192-bit bus, delivering 384.0 GB/s. That is a 512 GB/s bandwidth advantage for the NVIDIA card, which matters for high-resolution textures, large datasets, and memory-intensive compute workloads. The effective memory speed is 28 Gbps for the NVIDIA card versus 16 Gbps for the AMD card.

The compute resources tell a similar story. The NVIDIA card has 10,496 shading units, 328 texture mapping units, 112 ROPs, 82 RT cores, and 328 tensor cores. The AMD card has 2,560 shading units, 160 TMUs, 64 ROPs, and 40 RT cores, with no tensor cores at all. The FP32 throughput is 50.53 TFLOPS for NVIDIA versus 12.24 TFLOPS for AMD. For FP16, the NVIDIA card sustains 50.53 TFLOPS in a 1:1 ratio, while the AMD card reaches 24.47 TFLOPS in a 2:1 ratio. The pixel rate is 269.6 GPixel/s for NVIDIA versus 153.0 GPixel/s for AMD. The texture rate is 789.5 GTexel/s versus 382.4 GTexel/s.

The form factor and power delivery also differ. The NVIDIA card is a dual-slot design with a 16-pin power connector and a suggested PSU rating of 550 W. Its TDP is 200 W. The AMD card is an integrated graphics processor (IGP) with no power connector and a 145 W TDP. The NVIDIA card uses PCIe 5.0 x16, while the AMD card uses PCIe 4.0 x16. Display outputs are 4x DisplayPort 2.1b on the NVIDIA card, while the AMD card's outputs are listed as portable device dependent. Both cards support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The release timing also separates them. The NVIDIA card launched in March 2025 and remains active in production. The AMD card launched in May 2021 and is now end-of-life. The NVIDIA card's predecessor is the Workstation Ada generation, while the AMD card's predecessor is Polaris Mobile.

The Verdict

The data makes this an easy call for most use cases. The NVIDIA RTX PRO 4500 Blackwell wins every single head-to-head benchmark, with deltas ranging from 83.1% to 282.7%. If the workload is compute-heavy, the 282.7% lead in Passmark GPU Compute is decisive. If the workload is gaming or 3D rendering, the 213.9% lead in 3DMark Steel Nomad and the 151.6% lead in Passmark G3D are equally convincing.

The AMD Radeon RX 6800M does have one practical advantage: it is an IGP with a 145 W TDP and no power connector, so it fits into portable devices where a dual-slot, 200 W card with a 16-pin connector cannot. The NVIDIA card requires a 550 W PSU and a full PCIe 5.0 x16 slot. The AMD card runs on PCIe 4.0 x16 and draws less power. For a laptop or compact system, the AMD card is the only one of these two that physically fits.

For anyone building a workstation or desktop with space and power headroom, the NVIDIA card is the clear choice. It offers roughly triple the compute performance, more than double the memory capacity, and over double the bandwidth. The 76th percentile ranking versus the 74th percentile ranking confirms that the NVIDIA card sits higher in the overall GPU landscape, even if the nearest rivals for each card are different.

The AMD card is not without merit. It still reaches the 74th percentile among all GPUs, and its nearest rival is the AMD Radeon RX 570, which it beats by 0.4%. For an integrated solution in a portable device, it delivers reasonable performance. But the head-to-head data shows no scenario where the AMD card wins, so the choice comes down to form factor and power constraints rather than performance.

Specification Differences

The following fields differ between the two cards:

• Process node: NVIDIA uses 5 nm, AMD uses 7 nm
• Transistors: NVIDIA has 45,600 million, AMD has 17,200 million
• Die size: NVIDIA is 378 mm², AMD is 335 mm²
• Transistor density: NVIDIA is 120.6M / mm², AMD is 51.3M / mm²
• Base clock: NVIDIA is 1635 MHz, AMD is 2116 MHz
• Boost clock: NVIDIA is 2407 MHz, AMD is 2390 MHz
• Memory clock: NVIDIA is 1750 MHz (28 Gbps effective), AMD is 2000 MHz (16 Gbps effective)
• Memory size: NVIDIA has 32 GB, AMD has 12 GB
• Memory type: NVIDIA uses GDDR7, AMD uses GDDR6
• Memory bus width: NVIDIA is 256 bit, AMD is 192 bit
• Memory bandwidth: NVIDIA is 896.0 GB/s, AMD is 384.0 GB/s
• Shading units: NVIDIA has 10,496, AMD has 2,560
• TMUs: NVIDIA has 328, AMD has 160
• ROPs: NVIDIA has 112, AMD has 64
• RT cores: NVIDIA has 82, AMD has 40
• Tensor cores: NVIDIA has 328, AMD has none
• Pixel rate: NVIDIA is 269.6 GPixel/s, AMD is 153.0 GPixel/s
• Texture rate: NVIDIA is 789.5 GTexel/s, AMD is 382.4 GTexel/s
• FP32: NVIDIA is 50.53 TFLOPS, AMD is 12.24 TFLOPS
• FP16: NVIDIA is 50.53 TFLOPS (1:1), AMD is 24.47 TFLOPS (2:1)
• TDP: NVIDIA is 200 W, AMD is 145 W
• Slot width: NVIDIA is dual-slot, AMD is IGP
• Power connectors: NVIDIA has 1x 16-pin, AMD has none
• Suggested PSU: NVIDIA is 550 W, AMD is not listed
• Bus interface: NVIDIA is PCIe 5.0 x16, AMD is PCIe 4.0 x16
• Display outputs: NVIDIA has 4x DisplayPort 2.1b, AMD is portable device dependent
• Dimensions: NVIDIA is 267 mm long, 111 mm high, 40 mm wide; AMD has no listed dimensions
• Production status: NVIDIA is active, AMD is end-of-life
• Release date: NVIDIA is March 2025, AMD is May 2021
• Predecessor: NVIDIA is Workstation Ada, AMD is Polaris Mobile

FAQ

Q: Which card has higher raw compute performance?

A: The NVIDIA RTX PRO 4500 Blackwell scores 19,255 in Passmark GPU Compute, while the AMD Radeon RX 6800M scores 5,032. That is a 282.7% delta in favor of the NVIDIA card.

Q: How much memory does each card have?

A: The NVIDIA card has 32 GB of GDDR7 memory on a 256-bit bus with 896.0 GB/s bandwidth. The AMD card has 12 GB of GDDR6 memory on a 192-bit bus with 384.0 GB/s bandwidth.

Q: Can the AMD card fit in a desktop workstation?

A: The AMD card is an IGP with no listed dimensions, no power connector, and a 145 W TDP. It is designed for portable devices. The NVIDIA card is a dual-slot, 267 mm long card that requires a 550 W PSU and a 16-pin connector.

Q: Which card supports ray tracing?

A: Both cards support ray tracing. The NVIDIA card has 82 RT cores, and the AMD card has 40 RT cores. Both support DirectX 12 Ultimate (12_2), which includes ray tracing features.

Q: What is the performance difference in Vulkan?

A: The NVIDIA card scores 221,768 in Geekbench Vulkan, while the AMD card scores 94,766. The NVIDIA card leads by 134%.

Q: Is either card still in production?

A: The NVIDIA RTX PRO 4500 Blackwell is listed as active production, with a March 2025 release date. The AMD Radeon RX 6800M is end-of-life, with a May 2021 release date.

Where Each One Wins

The NVIDIA RTX PRO 4500 Blackwell wins in every benchmark category recorded in the database. The largest win is in compute workloads, with a 282.7% delta in Passmark GPU Compute. This makes it the clear choice for rendering, simulation, machine learning inference, or any task that pushes shader throughput. The 3DMark Steel Nomad DX12 score of 7,025 versus 2,238 gives a 213.9% lead, which covers modern gaming and DX12 workloads. The Vulkan score of 221,768 versus 94,766 gives a 134% lead, which matters for cross-platform engines and Vulkan-based compute.

The AMD Radeon RX 6800M wins in practical deployment scenarios. It is an IGP with a 145 W TDP, no power connector, and no listed dimensions, so it fits into laptops and compact portable systems. The NVIDIA card requires a 200 W TDP, a dual-slot cooler, a 16-pin power connector, a 550 W PSU, and a 267 mm length. For any system that cannot accommodate a full-size discrete card, the AMD card is the only option between the two. It also uses PCIe 4.0 x16, which is more common in older or mid-range platforms, while the NVIDIA card requires PCIe 5.0 x16 for full bandwidth.

The AMD card does have a higher base clock at 2116 MHz versus 1635 MHz for the NVIDIA card, and a higher boost clock at 2390 MHz versus 2407 MHz, though the NVIDIA card's boost clock is slightly higher. It also has a game clock of 2300 MHz, which the NVIDIA card does not list. However, the architectural advantages of the NVIDIA card, specifically the massive shading unit count and memory bandwidth, outweigh the clock speed differences in every recorded benchmark.

For workstation users with a desktop chassis and adequate power delivery, the NVIDIA card is the only rational choice. For mobile users who need a GPU that integrates into a laptop without external power, the AMD card is the only feasible option. The performance gap is enormous, but the form factor gap is equally decisive in the opposite direction.