AMD Radeon Pro W6800X Duo vs NVIDIA RTX 4000 Ada Generation Comparison

The AMD Radeon Pro W6800X Duo and NVIDIA RTX 4000 Ada Generation are two workstation-class GPUs with fundamentally different design goals. The data shows a split decision across the two shared benchmarks, with each card taking a narrow victory. The AMD card, built on a 7 nm process and featuring a massive 32 GB of GDDR6 memory, posts an average benchmark score of 143,766. The NVIDIA card, using a 5 nm process and 20 GB of GDDR6, averages 135,218. This places the AMD part in the 98th percentile of all GPUs, while the NVIDIA card sits just one point lower at the 97th percentile. The head-to-head results reveal a 14.8% swing in favor of NVIDIA in OpenCL, counterbalanced by a 1.4% edge for AMD in Vulkan. Each card wins one test, but the magnitudes of those wins are very different.

Head-to-Head Benchmarks

The most significant difference in performance appears in the Geekbench OpenCL test. Here, the NVIDIA RTX 4000 Ada Generation scores 146,593 against the AMD Radeon Pro W6800X Duo's 124,927. This represents a 14.8% advantage for NVIDIA, a substantial margin in a compute-oriented API. OpenCL is often used in professional rendering and simulation workloads, and this result suggests the NVIDIA card has a clear edge in those scenarios. The deltaPct of -14.8% from AMD's perspective indicates that the AMD card is trailing by nearly fifteen percent, which is a decisive gap in any benchmark comparison.

The Geekbench Vulkan test tells a different story. The AMD Radeon Pro W6800X Duo scores 125,622, narrowly edging out the NVIDIA RTX 4000 Ada Generation's 123,842. The margin here is just 1.4%, which is within the range of run-to-run variance for most benchmarks. While the AMD card does win this test, the practical significance of a 1.4% lead is minimal. It does, however, prevent a clean sweep for NVIDIA. The Vulkan API is often used in real-time rendering and gaming-like workloads, so this result indicates the AMD card holds its own in that specific area.

Looking at the broader context from the nearestRivals data, these two cards are closely matched overall. The NVIDIA RTX 4000 Ada Generation's average score of 135,218 places it directly alongside the NVIDIA A10M (135,230) and the AMD Radeon RX 9070 GRE (134,417). The AMD Radeon Pro W6800X Duo, with its 143,766 average, sits 6.3% ahead of the RTX 4000 Ada Generation in overall average performance. That 6.3% gap is driven entirely by the Vulkan score, but it also reflects the fact that the AMD card has three benchmark scores recorded (including a Geekbench Metal score of 180,749) while the NVIDIA card only has two. The Metal score is not part of the head-to-head comparison, but it does inflate AMD's average.

The per-test wins are split evenly at one each. The NVIDIA card's OpenCL victory is decisive, while AMD's Vulkan win is marginal. In a methodical analysis, the OpenCL result carries more weight due to its magnitude. A 14.8% difference is a real, measurable performance gap, whereas a 1.4% difference could easily be reversed with driver updates or different test conditions. The data clearly shows that for compute-heavy OpenCL tasks, the NVIDIA RTX 4000 Ada Generation is the superior choice, while the AMD card only barely edges ahead in Vulkan.

FAQ

Q: Which card has the higher average benchmark score?

A: The AMD Radeon Pro W6800X Duo has an average benchmark score of 143,766, which is 6.3% higher than the NVIDIA RTX 4000 Ada Generation's 135,218.

Q: How do the two cards compare in the Geekbench OpenCL test?

A: The NVIDIA RTX 4000 Ada Generation wins decisively, scoring 146,593 compared to the AMD card's 124,927, a 14.8% advantage for NVIDIA.

Q: What is the result of the Geekbench Vulkan test?

A: The AMD Radeon Pro W6800X Duo wins by a narrow 1.4% margin, scoring 125,622 against the NVIDIA card's 123,842.

Q: Which card has more memory, and what is the difference?

A: The AMD Radeon Pro W6800X Duo has 32 GB of GDDR6 memory, while the NVIDIA RTX 4000 Ada Generation has 20 GB, a difference of 12 GB in favor of AMD.

Q: What are the processor node sizes for each card?

A: The AMD card is built on a 7 nm process, while the NVIDIA card uses a 5 nm process, both from TSMC.

Q: Which card has a higher pixel rate?

A: The AMD Radeon Pro W6800X Duo has a pixel rate of 188.8 GPixel/s, which is higher than the NVIDIA card's 139.2 GPixel/s.

The Verdict

The data points to a clear split based on workload type. The NVIDIA RTX 4000 Ada Generation is the better choice for OpenCL-based compute tasks, given its 14.8% lead in that specific benchmark. Its 26.73 TFLOPS of FP32 performance is also substantially higher than the AMD card's 15.11 TFLOPS, which aligns with the OpenCL result. For users running rendering, simulation, or other compute-heavy applications that rely on OpenCL, the NVIDIA card is the data-backed winner.

The AMD Radeon Pro W6800X Duo, however, should be the pick for those who need massive memory capacity or who prioritize Vulkan performance. Its 32 GB of memory is 60% larger than NVIDIA's 20 GB, which is critical for large datasets or high-resolution textures that exceed 20 GB. The 1.4% Vulkan win is narrow, but it does indicate that the AMD card is not at a disadvantage in real-time rendering workloads. Additionally, the AMD card's higher average benchmark score (143,766 vs 135,218) and its 98th percentile ranking suggest it is the more powerful overall GPU when all available benchmarks are considered.

Neither card is a universal winner. The NVIDIA RTX 4000 Ada Generation offers superior compute performance in OpenCL and a much lower power draw (130 W vs 400 W), but the AMD card counters with more memory and a higher raw pixel rate (188.8 GPixel/s vs 139.2 GPixel/s). For a buyer who values raw compute throughput, NVIDIA is the answer. For a buyer who needs memory capacity above all else, AMD is the only choice. The 6.3% average score advantage for AMD is real, but it is driven by a benchmark (Geekbench Metal) that NVIDIA does not participate in, so it should be interpreted with caution.

Specification Differences

The memory subsystems are the most obvious divergence. The AMD Radeon Pro W6800X Duo ships with 32 GB of GDDR6 on a 256-bit bus, yielding 512.0 GB/s of bandwidth. The NVIDIA RTX 4000 Ada Generation has 20 GB of GDDR6 on a 160-bit bus, producing 360.0 GB/s. AMD's memory bandwidth is 42% higher, which directly supports its 512.0 GB/s figure. The memory clocks also differ: AMD runs at 2000 MHz (16 Gbps effective), while NVIDIA runs at 2250 MHz (18 Gbps effective), but the wider bus gives AMD the overall bandwidth advantage.

The compute units show a different balance. The NVIDIA card has 6144 shading units, 192 TMUs, and 64 ROPs, while the AMD card has 3840 shading units, 240 TMUs, and 96 ROPs. Despite having fewer shading units, AMD's higher ROP count contributes to its 188.8 GPixel/s pixel rate, which exceeds NVIDIA's 139.2 GPixel/s. NVIDIA's texture rate of 417.6 GTexel/s is lower than AMD's 472.1 GTexel/s, meaning AMD also wins in texture fill. However, NVIDIA's FP32 performance of 26.73 TFLOPS is significantly higher than AMD's 15.11 TFLOPS, showing a clear trade-off between raw compute and fill-rate capabilities.

The power and physical specs are drastically different. The AMD card has a TDP of 400 W, requires an 800 W suggested PSU, and occupies a quad-slot form factor. The NVIDIA card has a TDP of 130 W, requires a 300 W suggested PSU, and is a single-slot design. The AMD card is longer (267 mm vs 245 mm) and taller (120 mm vs 112 mm). The bus interfaces also differ: AMD uses Apple MPX, while NVIDIA uses PCIe 4.0 x16. Display outputs are different as well, with AMD offering 1x HDMI 2.1 and 4x Thunderbolt, while NVIDIA provides 4x DisplayPort 1.4a.

Architecture Differences

The two cards come from completely different architectural generations. The AMD Radeon Pro W6800X Duo is built on RDNA 2.0, using the Navi 21 chip, and is part of the Radeon Pro Mac (Navi II Series) generation. It is fabricated on a 7 nm process at TSMC, with 26,800 million transistors on a 520 mm² die, giving a transistor density of 51.5M per mm². The NVIDIA RTX 4000 Ada Generation uses the Ada Lovelace architecture with the AD104 chip, from the Workstation Ada (x000A) generation. It is made on a 5 nm process at TSMC, packing 35,800 million transistors into a 294 mm² die, resulting in a much higher density of 121.8M per mm².

The core configurations reflect these architectural differences. AMD includes 60 ray tracing cores and no dedicated tensor cores, while NVIDIA has 48 ray tracing cores and 192 tensor cores. The FP16 performance also differs: AMD achieves 30.21 TFLOPS using a 2:1 ratio, while NVIDIA achieves 26.73 TFLOPS at a 1:1 ratio. This means AMD's FP16 is double its FP32, while NVIDIA's FP16 matches its FP32. The AMD card supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, as does the NVIDIA card, so API support is identical.

The production status and release dates are also distinct. The AMD card was released on August 2, 2021, and is now end-of-life, with no predecessor or successor listed. The NVIDIA card was released on August 8, 2023, is still active, and lists its predecessor as "Workstation Ampere" and its successor as "Blackwell PRO W". The AMD card has a launch MSRP of 4,999 USD, while the NVIDIA card has no launch MSRP listed. The AMD card's architecture is older and denser in terms of die size, while NVIDIA's is newer and denser in terms of transistor packing.

Where Each One Wins

The AMD Radeon Pro W6800X Duo wins in scenarios that demand high memory capacity and fill rates. Its 32 GB of VRAM is the clear advantage, allowing it to handle datasets that would exceed the NVIDIA card's 20 GB limit. The higher pixel rate (188.8 GPixel/s) and texture rate (472.1 GTexel/s) make it well-suited for tasks that are fill-bound, such as high-resolution rasterization or multi-sampled anti-aliasing. Its 1.4% Vulkan win also suggests it holds up in real-time graphics APIs. The AMD card's 98th percentile ranking and higher average score (143,766) indicate it is the more capable card overall in the benchmarks it participates in.

The NVIDIA RTX 4000 Ada Generation wins in compute-heavy OpenCL workloads, as shown by its 14.8% lead in that test. Its 26.73 TFLOPS of FP32 performance is 77% higher than AMD's, which is the primary driver of that OpenCL advantage. The 192 tensor cores are also a significant feature for AI or machine learning tasks, a capability the AMD card entirely lacks. The dramatically lower power draw (130 W vs 400 W) and single-slot design make it the only viable choice for compact or power-constrained systems. The NVIDIA card's 97th percentile ranking is only one point below AMD, so it is not far behind in overall capability.

The data-driven conclusion is that the NVIDIA RTX 4000 Ada Generation is the winner for compute and efficiency, while the AMD Radeon Pro W6800X Duo is the winner for memory capacity and fill-rate-bound tasks. The split is clean: one test each, with the larger margin going to NVIDIA. If a workload fits within 20 GB and uses OpenCL, NVIDIA is the clear pick. If a workload exceeds 20 GB or relies on Vulkan, AMD is the safer choice. There is no scenario where both cards are equally suitable, as their strengths and weaknesses are mutually exclusive.