AMD Radeon PRO W6400 vs NVIDIA GeForce RTX 3080 Ti Comparison

# Head-to-Head Benchmarks

The benchmark data tells a strikingly lopsided story when comparing the NVIDIA GeForce RTX 3080 Ti against the AMD Radeon PRO W6400. In the two shared tests — Geekbench OpenCL and Geekbench Vulkan — the RTX 3080 Ti wins both, and by margins that border on overwhelming.

Starting with Geekbench OpenCL, the RTX 3080 Ti posts a score of 170,037, while the Radeon PRO W6400 manages 35,027. That translates to a delta of 385.4% in favor of the NVIDIA card. To frame this differently, the RTX 3080 Ti delivers nearly five times the OpenCL compute performance of its AMD rival. The gap is even wider in Geekbench Vulkan: 192,697 versus 39,286, a 390.5% advantage for the GeForce card. This suggests that the NVIDIA architecture's advantage is not confined to a single API — it extends across both OpenCL and Vulkan workloads.

What makes these numbers particularly striking is how the overall average benchmark scores contextualize them. The RTX 3080 Ti carries an average benchmark score of 41,187 across its full test suite, while the Radeon PRO W6400 averages 37,157. Yet in the two directly comparable tests, the NVIDIA card's lead is far more dramatic than those averages imply. The reason is that the RTX 3080 Ti's benchmark portfolio includes many DirectX and Passmark tests where it dominates, while the W6400 only has the two Geekbench entries recorded.

Looking at the nearest rivals for each card provides additional perspective. The RTX 3080 Ti's closest competitor is the AMD Radeon Pro 5300, which scores 40,870 — just 0.8% behind the NVIDIA card. The GeForce also sits 2% ahead of the RTX 5070 (40,377) and 1.7% ahead of the Tesla M40 (41,897). Meanwhile, the Radeon PRO W6400's nearest rival is the RX Vega 56 at 37,507 (0.9% ahead of the AMD card), with the RTX 4070 just 1.3% ahead at 37,648. This places both cards in different performance tiers entirely — the RTX 3080 Ti competes in the 40,000-point range, while the W6400 resides in the 37,000-point range.

The win tally confirms the sweep: 2 wins for the RTX 3080 Ti, 0 for the Radeon PRO W6400. No benchmark in the shared set favors the AMD card. For users comparing these two based on raw compute benchmarks, the data is unambiguous about which card delivers more performance.

# Architecture Differences

The architectural divide between these two GPUs is as wide as the performance gap suggests. NVIDIA's RTX 3080 Ti is built on the GA102 chip using the Ampere architecture, fabricated on Samsung's 8 nm process. The die size is substantial at 628 mm², housing 28,300 million transistors for a density of 45.1 million per square millimeter. AMD's Radeon PRO W6400, by contrast, uses the Navi 24 chip on the RDNA 2.0 architecture, built by TSMC on a 6 nm node. The AMD die is just 107 mm² with 5,400 million transistors, yielding a higher density of 50.5 million per square millimeter — evidence of the more advanced process node despite the smaller overall chip.

Memory configurations diverge sharply. The RTX 3080 Ti ships with 12 GB of GDDR6X on a 384-bit bus, delivering 912.4 GB/s of bandwidth. The Radeon PRO W6400 offers 4 GB of GDDR6 on a 64-bit bus, with a much narrower 128.0 GB/s. The NVIDIA card's memory bandwidth is over seven times greater, which directly impacts texture-heavy and large-dataset workloads. Clock speeds tell the opposite story: the AMD card runs at a 2039 MHz base and 2321 MHz boost, while the RTX 3080 Ti sits at 1365 MHz base and 1665 MHz boost. The AMD card's higher clocks, however, cannot compensate for the massive disparity in raw resources.

Compute resources are where the gulf becomes most apparent. The RTX 3080 Ti packs 10,240 shading units, 320 texture mapping units, and 112 ROPs, alongside 80 ray tracing cores and 320 tensor cores. The Radeon PRO W6400 has 768 shading units, 48 TMUs, 32 ROPs, and 12 ray tracing cores — with no tensor cores at all. The FP32 throughput tells the story: 34.10 TFLOPS for NVIDIA versus 3.565 TFLOPS for AMD. Interestingly, the AMD card achieves 7.130 TFLOPS in FP16 (at a 2:1 ratio), while the NVIDIA card's FP16 matches its FP32 at 34.10 TFLOPS (1:1).

Power requirements reflect these architectural differences dramatically. The RTX 3080 Ti is rated at 350 W TDP with a suggested 750 W power supply and a single 12-pin connector, occupying a dual-slot form factor. The Radeon PRO W6400 draws just 50 W, needs only a 250 W PSU, uses no power connectors, and fits in a single slot. This makes the AMD card dramatically more efficient per watt, though the NVIDIA card's absolute performance remains the story in benchmarks.

# Where Each One Wins

The RTX 3080 Ti's wins are comprehensive across every shared benchmark, but the nature of those wins varies by workload type. In Geekbench OpenCL, the 385.4% delta indicates a massive advantage in general-purpose GPU compute — tasks like video encoding, physics simulations, and data processing that leverage OpenCL kernels. The Vulkan result, at 390.5% ahead, suggests a similarly overwhelming lead in graphics workloads that use Vulkan's modern API features.

For gaming and real-time rendering, the RTX 3080 Ti's broader benchmark suite reinforces its position. Its Passmark G3D score of 26,896 and 3DMark Steel Nomad score of 5,077 place it firmly in high-end territory, with a percentile ranking of 83 among all GPUs. The Radeon PRO W6400's percentile of 80 is not far behind in relative terms, but this ranking is based on its limited two-test portfolio and does not reflect the same breadth of workloads.

The Radeon PRO W6400's advantages are not visible in compute benchmarks, but the architecture suggests different strengths. Its 50 W TDP and single-slot design make it suitable for environments where space and power are constrained — think compact workstations or multi-GPU server configurations. The 6 nm process with higher transistor density (50.5M/mm²) indicates a more modern manufacturing approach, and the higher clock speeds (2321 MHz boost) could benefit latency-sensitive tasks that do not scale with raw core counts.

In practical terms, the RTX 3080 Ti wins for anyone needing maximum compute throughput, high-bandwidth memory access, or ray tracing performance — its 80 RT cores versus the AMD card's 12 make that distinction clear. The Radeon PRO W6400's domain is efficiency and simplicity: no external power, minimal cooling requirements, and a PCIe 4.0 x4 interface that suits lighter workloads.

# FAQ

Q: Which card has a higher average benchmark score?

A: The NVIDIA GeForce RTX 3080 Ti averages 41,187 across its benchmark suite, while the AMD Radeon PRO W6400 averages 37,157. The NVIDIA card also holds a higher percentile ranking at 83 versus the AMD card's 80.

Q: How much faster is the RTX 3080 Ti in Geekbench Vulkan?

A: The RTX 3080 Ti scores 192,697 in Geekbench Vulkan compared to the Radeon PRO W6400's 39,286, which is a 390.5% advantage for the NVIDIA card.

Q: What is the memory capacity difference between these two GPUs?

A: The RTX 3080 Ti comes with 12 GB of GDDR6X memory on a 384-bit bus, while the Radeon PRO W6400 has 4 GB of GDDR6 on a 64-bit bus. The NVIDIA card's bandwidth is 912.4 GB/s versus 128.0 GB/s for the AMD card.

Q: Does the Radeon PRO W6400 have tensor cores?

A: No, the Radeon PRO W6400 does not list tensor cores in its specifications. The RTX 3080 Ti includes 320 tensor cores, which support AI-accelerated workloads.

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

A: The RTX 3080 Ti has a TDP of 350 W with a suggested 750 W power supply, while the Radeon PRO W6400 has a TDP of 50 W and a suggested 250 W PSU. The AMD card requires no power connectors and is single-slot.

Q: Which card has a higher boost clock?

A: The Radeon PRO W6400 boosts to 2321 MHz, notably higher than the RTX 3080 Ti's 1665 MHz boost clock. However, the NVIDIA card's far larger core count leads to much higher overall throughput.

# Specification Differences

The two cards differ across nearly every major specification category. The RTX 3080 Ti uses an 8 nm process from Samsung with 28,300 million transistors on a 628 mm² die; the Radeon PRO W6400 uses TSMC's 6 nm node with 5,400 million transistors on 107 mm². The NVIDIA card has 10,240 shading units, 320 TMUs, and 112 ROPs, versus 768 shading units, 48 TMUs, and 32 ROPs for the AMD card. Ray tracing cores number 80 for NVIDIA and 12 for AMD, and tensor cores exist only on the NVIDIA card at 320.

Memory differs in size, type, bus width, and bandwidth: 12 GB GDDR6X on 384-bit with 912.4 GB/s versus 4 GB GDDR6 on 64-bit with 128.0 GB/s. Clock speeds favor AMD at 2039 MHz base and 2321 MHz boost, while NVIDIA runs 1365 MHz base and 1665 MHz boost. FP32 compute is 34.10 TFLOPS for NVIDIA and 3.565 TFLOPS for AMD; FP16 is 34.10 TFLOPS (1:1) for NVIDIA and 7.130 TFLOPS (2:1) for AMD.

Form factor and power are also divergent: the RTX 3080 Ti is dual-slot, 285 mm long, uses a 12-pin connector, and has a 350 W TDP with a 750 W recommended PSU. The Radeon PRO W6400 is single-slot with no dimensions listed, no power connectors, a 50 W TDP, and a 250 W suggested PSU. The bus interface is PCIe 4.0 x16 for NVIDIA versus PCIe 4.0 x4 for AMD. Display outputs are 1x HDMI 2.1 plus 3x DisplayPort 1.4a on the RTX 3080 Ti, while the W6400 offers 2x DisplayPort 1.4a.

# The Verdict

The data clearly favors the NVIDIA GeForce RTX 3080 Ti for performance-oriented users. Its 385-390% leadership in shared benchmarks, combined with 12 GB of high-bandwidth memory and 80 ray tracing cores, positions it as the choice for compute-heavy workloads, ray-traced rendering, and any task where raw throughput matters. The 83rd percentile ranking and average score of 41,187 reinforce this conclusion. The launch MSRP of 1,199 USD reflects its high-end positioning, though that figure is now historical given its end-of-life status.

The AMD Radeon PRO W6400 makes sense for a different set of priorities. Its 50 W TDP, single-slot design, and lack of power connectors mean it can slot into systems where the RTX 3080 Ti physically and electrically cannot fit. The higher boost clock of 2321 MHz and more modern 6 nm process suggest efficiency-focused design. For workloads that do not require massive compute or memory bandwidth — and for users who value simplicity and low power draw — the W6400 is the practical option, even if its 80th percentile ranking and 37,157 average score trail the NVIDIA card.

The verdict depends on whether absolute performance or operational constraints dominate the use case. The RTX 3080 Ti wins every benchmark it shares with the W6400, and does so by enormous margins. The W6400 wins on efficiency, size, and power requirements — but those are not metrics captured in the benchmark scores. For anyone asking which card is faster, the answer is unambiguous. For anyone asking which card fits their system, the answer may be the AMD card, regardless of the performance gap.