AMD Radeon Pro W6800X Duo vs NVIDIA RTX A4500 Mobile Comparison

Head-to-Head Benchmarks

The benchmark database records two direct comparisons between the AMD Radeon Pro W6800X Duo and the NVIDIA RTX A4500 Mobile, and in both instances the AMD part emerges with a commanding lead. In the Geekbench OpenCL test, the Radeon Pro W6800X Duo scores 124,335 against 105,307 for the RTX A4500 Mobile, a margin of 18.1 percent. That is not a trivial gap; it places the AMD card in a different performance tier for compute workloads that scale across the GPU's full execution width.

The Vulkan result is even more lopsided. The Radeon Pro W6800X Duo posts 125,622, while the RTX A4500 Mobile manages only 76,960. That works out to a 63.2 percent delta in favor of the AMD card. For applications that leverage Vulkan's explicit control over the GPU, the Radeon Pro W6800X Duo is in a completely different league. The RTX A4500 Mobile's Vulkan score is not merely lower; it is dramatically lower, suggesting that the mobile NVIDIA part struggles to sustain throughput in this API under the benchmark's workload.

Looking at the broader database context, the Radeon Pro W6800X Duo's average benchmark score is 135,774, which places it in the 96th percentile of all GPUs tracked. Its nearest rivals include the AMD Radeon PRO W6800 at 135,396 (a 0.3 percent difference) and the NVIDIA A10M at 135,230 (0.4 percent slower). The NVIDIA RTX 4000 Ada Generation also sits nearby at 135,218, again 0.4 percent behind. The AMD Radeon PRO V620 is the only close competitor that edges ahead, with an average score of 136,472, which is 0.5 percent higher than the W6800X Duo. These numbers indicate that the W6800X Duo sits at the very top of its peer group, trading places with other flagship-class workstation accelerators within a narrow band of roughly one percent.

The RTX A4500 Mobile, by contrast, has an average benchmark score of 91,134, placing it in the 93rd percentile of all GPUs. Its nearest rival is the desktop NVIDIA RTX A4500 at 91,671, which is 0.6 percent faster. The AMD Radeon Instinct MI60 is 1.4 percent ahead at 92,466, while the NVIDIA Quadro GP100 trails by 4.2 percent at 87,445. The AMD Radeon PRO W7600 is 4.6 percent behind at 87,108. The data shows a clear stratification: the Radeon Pro W6800X Duo competes with the fastest workstation accelerators in the database, while the RTX A4500 Mobile sits a full tier lower, even though it still outperforms several older or lower-end competitors.

Architecture Differences

The two GPUs come from fundamentally different design philosophies. The AMD Radeon Pro W6800X Duo is built on the Navi 21 chip using the RDNA 2.0 architecture, manufactured on a 7 nm process at TSMC. The NVIDIA RTX A4500 Mobile uses the GA104 chip with the Ampere architecture, fabricated on an 8 nm process at Samsung. The process node difference is modest but measurable, with AMD's chip packing 26,800 million transistors into a 520 mm² die, yielding a transistor density of 51.5 million per square millimeter. The NVIDIA chip contains 17,400 million transistors on a 392 mm² die, for a density of 44.4 million per square millimeter. The AMD die is larger and denser, which reflects its dual-chip design (the "Duo" in the name) and the more compact process geometry.

Memory configurations also diverge. The Radeon Pro W6800X Duo carries 32 GB of GDDR6 memory on a 256 bit bus, delivering 512.0 GB/s of bandwidth. The RTX A4500 Mobile has half the capacity at 16 GB, also GDDR6 on a 256 bit bus, and the same 512.0 GB/s bandwidth. Both cards run their memory at 2000 MHz with 16 Gbps effective transfer, so the bandwidth ceiling is identical; the difference is purely in capacity.

The compute resources tell a more complex story. The Radeon Pro W6800X Duo has 3,840 shading units, 240 texture mapping units, 96 ROPs, and 60 ray tracing cores. The RTX A4500 Mobile fields 5,888 shading units, 184 TMUs, 96 ROPs, and 46 ray tracing cores. The NVIDIA card has more shaders, but the AMD card has more TMUs and RT cores. The RTX A4500 Mobile also includes 184 tensor cores, which the AMD card lacks entirely, a key differentiator for AI and deep learning workloads that rely on Tensor Core acceleration. In terms of raw throughput, the Radeon Pro W6800X Duo achieves 15.11 TFLOPS FP32 and 30.21 TFLOPS FP16 (at a 2:1 ratio), while the RTX A4500 Mobile reaches 17.66 TFLOPS FP32 and 17.66 TFLOPS FP16 (at a 1:1 ratio). The NVIDIA card is faster in FP32 but matches its FP32 rate in FP16, whereas the AMD card doubles its FP32 rate in FP16.

Clock speeds differ sharply. The Radeon Pro W6800X Duo runs at a base clock of 1800 MHz and a boost of 1967 MHz, while the RTX A4500 Mobile has a base of 930 MHz and a boost of 1500 MHz. The AMD card operates at significantly higher frequencies, which helps explain its benchmark dominance despite the NVIDIA card's higher shader count.

The physical and power characteristics are stark. The Radeon Pro W6800X Duo is a quad-slot card with a 400 W TDP and a suggested PSU of 800 W, using an Apple MPX bus interface, and measures 267 mm in length and 120 mm in height. The RTX A4500 Mobile is a portable device component with a 140 W TDP, no power connectors (drawing power from its host system), and a PCIe 4.0 x16 interface. Its dimensions are not recorded in the database, reflecting its status as a mobile part that is integrated into laptops rather than sold as a standalone card.

FAQ

Q: Which GPU is faster in the benchmark database?

A: The AMD Radeon Pro W6800X Duo wins both recorded head-to-head benchmarks. It leads by 18.1 percent in Geekbench OpenCL (124,335 vs 105,307) and by 63.2 percent in Geekbench Vulkan (125,622 vs 76,960).

Q: How do their average benchmark scores compare?

A: The Radeon Pro W6800X Duo has an average benchmark score of 135,774, placing it in the 96th percentile of all GPUs. The RTX A4500 Mobile has an average score of 91,134, placing it in the 93rd percentile.

Q: What are the closest rivals for each card?

A: For the Radeon Pro W6800X Duo, the nearest rivals are the AMD Radeon PRO W6800 (0.3 percent slower), the NVIDIA A10M (0.4 percent slower), the NVIDIA RTX 4000 Ada Generation (0.4 percent slower), and the AMD Radeon PRO V620 (0.5 percent faster). For the RTX A4500 Mobile, the nearest rivals are the NVIDIA RTX A4500 (0.6 percent faster), the AMD Radeon Instinct MI60 (1.4 percent faster), the NVIDIA Quadro GP100 (4.2 percent slower), and the AMD Radeon PRO W7600 (4.6 percent slower).

Q: Do both GPUs support the same graphics APIs?

A: Yes, both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

Q: How do their memory capacities and bandwidths compare?

A: The Radeon Pro W6800X Duo has 32 GB of GDDR6 memory with 512.0 GB/s bandwidth. The RTX A4500 Mobile has 16 GB of GDDR6 memory with the same 512.0 GB/s bandwidth. Both use a 256 bit memory bus.

Q: What are the key architectural differences?

A: The AMD card uses RDNA 2.0 on a 7 nm process, while the NVIDIA card uses Ampere on an 8 nm process. The AMD card has 60 RT cores and no tensor cores, while the NVIDIA card has 46 RT cores and 184 tensor cores. The AMD card has a 400 W TDP, the NVIDIA card has a 140 W TDP.

Specification Differences

The two cards differ across nearly every specification category. The Radeon Pro W6800X Duo uses the Navi 21 chip with RDNA 2.0 architecture, while the RTX A4500 Mobile uses the GA104 chip with Ampere architecture. The process nodes differ: 7 nm at TSMC for AMD versus 8 nm at Samsung for NVIDIA. Transistor counts are 26,800 million for the AMD chip versus 17,400 million for the NVIDIA chip, with die sizes of 520 mm² and 392 mm² respectively. Transistor density is 51.5 million per mm² for AMD versus 44.4 million per mm² for NVIDIA.

Clock speeds diverge significantly. The AMD card has a base clock of 1800 MHz and a boost of 1967 MHz, while the NVIDIA card has a base of 930 MHz and a boost of 1500 MHz. Memory capacity differs: 32 GB versus 16 GB, both GDDR6. The shading unit counts are 3,840 for AMD versus 5,888 for NVIDIA. TMU counts are 240 versus 184. ROPs are identical at 96. RT cores are 60 versus 46. The NVIDIA card has 184 tensor cores; the AMD card has none.

Pixel rate is 188.8 GPixel/s for AMD versus 144.0 GPixel/s for NVIDIA. Texture rate is 472.1 GTexel/s versus 276.0 GTexel/s. FP32 compute is 15.11 TFLOPS for AMD versus 17.66 TFLOPS for NVIDIA. FP16 compute is 30.21 TFLOPS (2:1) for AMD versus 17.66 TFLOPS (1:1) for NVIDIA. The TDP is 400 W for AMD versus 140 W for NVIDIA. The AMD card is quad-slot with an Apple MPX interface; the NVIDIA card uses PCIe 4.0 x16 with no power connectors. Display outputs are 1x HDMI 2.1 and 4x Thunderbolt for AMD, versus portable device dependent for NVIDIA.

The AMD card has a launch MSRP of 4,999 USD, while the NVIDIA card has no recorded launch MSRP. The AMD card was released on 2021-08-02, the NVIDIA card on 2022-03-21. The AMD card has no predecessor or successor recorded; the NVIDIA card's predecessor is Quadro Turing-M and its successor is Ada-MW. Both are end-of-life products.

Where Each One Wins

The AMD Radeon Pro W6800X Duo is the clear winner in the benchmark data. It dominates both recorded tests, with a 18.1 percent lead in OpenCL and a 63.2 percent lead in Vulkan. Its average benchmark score of 135,774 puts it in the 96th percentile, and its nearest rivals are all within one percent, meaning it trades blows with the fastest workstation GPUs in the database. The 32 GB memory capacity makes it suitable for large datasets and multi-GPU rendering workloads. The high FP16 throughput of 30.21 TFLOPS and the 60 RT cores suggest strong performance for ray tracing and half-precision compute tasks. The quad-slot design and 400 W TDP indicate a desktop or workstation-class installation, not a portable solution.

The NVIDIA RTX A4500 Mobile wins in the domain of power efficiency and portability. Its 140 W TDP is far lower than the AMD card's 400 W, and its PCIe 4.0 x16 interface with no power connectors means it is designed to run inside a laptop. The 184 tensor cores give it a capability the AMD card does not have, which is relevant for AI inference and deep learning workloads that can leverage Tensor Core acceleration. Its FP32 throughput of 17.66 TFLOPS is higher than the AMD card's 15.11 TFLOPS, so for pure single-precision compute without the overhead of other factors, the NVIDIA part holds an edge. Its 93rd percentile standing still places it above many other GPUs, and its nearest rivals are all within a few percent, indicating it is a solid mid-tier workstation mobile GPU.

For use cases, the Radeon Pro W6800X Duo is the choice for maximum compute throughput, large memory footprints, and Vulkan-based rendering pipelines. The RTX A4500 Mobile is the choice for mobile workstations where power draw and physical size are constraints, and where tensor core acceleration for AI workloads is a priority. The database shows no recorded test where the NVIDIA card wins, so the AMD card is the performance leader across all measured dimensions.