AMD Radeon Pro Vega II Duo vs NVIDIA RTX A4500 Mobile Comparison

Head-to-Head Benchmarks

The two GPUs split their direct benchmark confrontations exactly one win apiece, yet the magnitude of those victories is far from symmetrical. In the Geekbench OpenCL test, the NVIDIA RTX A4500 Mobile posts a score of 105,307 against the AMD Radeon Pro Vega II Duo’s 98,432, a 6.5% advantage for NVIDIA. This is a solid, workmanlike lead, but it is not a rout. The AMD card’s own nearest-rival data shows it trailing the Radeon Pro Vega II by 2.6% and the PRO W7900 by 3.6% in average benchmark score, so a 6.5% deficit to a mobile part in OpenCL places the Duo squarely within its expected performance envelope.

The Vulkan result tells a completely different story. The AMD Radeon Pro Vega II Duo scores 99,296, while the NVIDIA RTX A4500 Mobile manages just 76,960. That is a 29% gap in AMD’s favor — a decisive, near-trouncing margin. Notably, the AMD card’s Vulkan score is almost identical to its OpenCL score (99,296 vs 98,432), suggesting a consistent compute performance profile across APIs. The NVIDIA part, by contrast, drops by more than 28,000 points when moving from OpenCL to Vulkan, indicating a significant API-specific weakness. In terms of average benchmark score across all tests, the AMD card sits at 106,750, which is 17% higher than the NVIDIA part’s 91,134 average.

Looking at the broader competitive landscape, the AMD Radeon Pro Vega II Duo’s average score places it at the 94th percentile of all GPUs, with its nearest rival being the AMD Radeon Pro W6600X at 107,342 (a mere 0.6% ahead). The NVIDIA RTX A4500 Mobile, meanwhile, sits at the 93rd percentile, with its closest competitor being the desktop RTX A4500 at 91,671 (0.6% ahead). Both cards are thus extremely close to their immediate peers, but the AMD part operates in a higher absolute performance tier.

Architecture Differences

The architectural divide between these two GPUs is stark, reflecting two fundamentally different design philosophies. The AMD Radeon Pro Vega II Duo is built on TSMC’s 7 nm process using the GCN 5.1 architecture with the Vega 20 chip. It packs 13,230 million transistors into a 331 mm² die, yielding a transistor density of 40.0M per mm². The NVIDIA RTX A4500 Mobile uses Samsung’s 8 nm process with the Ampere architecture and GA104 chip, containing 17,400 million transistors on a 392 mm² die — a density of 44.4M per mm². Despite the AMD part’s older architecture, it achieves a lower density but compensates with a more power-hungry design.

Memory subsystems could hardly be more different. The AMD card features 32 GB of HBM2 on a 4096-bit bus, delivering 1.02 TB/s of bandwidth. The NVIDIA card has 16 GB of GDDR6 on a 256-bit bus, producing 512.0 GB/s — exactly half the bandwidth. The AMD card’s memory clock is listed at 1000 MHz (2 Gbps effective), while NVIDIA runs at 2000 MHz (16 Gbps effective). This means the NVIDIA part relies on much faster per-pin transfer rates, but the AMD card’s enormous bus width gives it the overall bandwidth crown by a factor of two.

Compute resources tell a different story. The AMD card has 4,096 shading units, 256 texture mapping units, and 64 ROPs. The NVIDIA card counters with 5,888 shading units, 184 TMUs, and 96 ROPs. NVIDIA has more raw shader cores and ROPs, but AMD has more TMUs. In terms of raw throughput, NVIDIA’s FP32 rating of 17.66 TFLOPS exceeds AMD’s 14.09 TFLOPS by 25%. However, AMD’s FP16 performance is 28.18 TFLOPS (2:1 ratio), while NVIDIA’s FP16 is 17.66 TFLOPS (1:1 ratio) — meaning AMD has a 60% advantage in half-precision compute. The AMD card also achieves a higher texture rate at 440.3 GTexel/s versus NVIDIA’s 276.0 GTexel/s, but NVIDIA wins pixel rate at 144.0 GPixel/s versus 110.1 GPixel/s.

The NVIDIA part includes 46 RT cores and 184 tensor cores, features entirely absent from the AMD card. The AMD card’s API support includes DirectX 12 (12_1), OpenGL 4.6, and Vulkan 1.3, while NVIDIA supports DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Power consumption is drastically different: the AMD card has a 475 W TDP with a suggested 850 W PSU, while the NVIDIA mobile part draws only 140 W. The AMD card is a quad-slot design using the Apple MPX bus interface, while NVIDIA uses PCIe 4.0 x16 with no power connectors.

Where Each One Wins

The AMD Radeon Pro Vega II Duo is the clear winner in Vulkan workloads, where its 29% lead over the NVIDIA part is the single largest margin in any direct comparison. This suggests AMD’s GCN 5.1 architecture has a more efficient Vulkan driver implementation or hardware scheduling for that API. The AMD card’s 32 GB of HBM2 memory at 1.02 TB/s bandwidth makes it the choice for memory-bound tasks, particularly those that involve massive datasets exceeding 16 GB. Its FP16 performance of 28.18 TFLOPS is nearly double that of the NVIDIA card, making it superior for workloads that leverage half-precision arithmetic. The AMD card also sits at the 94th percentile of all GPUs, one percentile higher than the NVIDIA part, and its average benchmark score of 106,750 is 17% higher.

The NVIDIA RTX A4500 Mobile wins in OpenCL, where its 6.5% lead demonstrates better general-purpose compute performance in that API. Its FP32 throughput of 17.66 TFLOPS is 25% higher than the AMD card’s, making it the pick for single-precision compute tasks. The NVIDIA part’s 96 ROPs versus 64 give it a pixel-rate advantage of 144.0 versus 110.1 GPixel/s, which benefits rasterization-heavy workloads. The inclusion of 46 RT cores and 184 tensor cores means it supports ray tracing and AI acceleration features that the AMD card lacks entirely. Its 140 W TDP makes it dramatically more power-efficient — the AMD card draws more than three times the power. The NVIDIA card’s Vulkan 1.4 support is also newer than AMD’s Vulkan 1.3.

FAQ

Q: Which GPU has the higher average benchmark score?

A: The AMD Radeon Pro Vega II Duo has an average benchmark score of 106,750, which is 17% higher than the NVIDIA RTX A4500 Mobile’s 91,134.

Q: What is the largest performance difference in head-to-head testing?

A: The AMD Radeon Pro Vega II Duo leads by 29% in Geekbench Vulkan (99,296 vs 76,960), which is the largest margin in any direct comparison.

Q: Does the NVIDIA RTX A4500 Mobile support ray tracing?

A: Yes, it includes 46 RT cores and 184 tensor cores, which the AMD Radeon Pro Vega II Duo does not have.

Q: How does memory bandwidth compare between the two?

A: The AMD card offers 1.02 TB/s via 32 GB of HBM2 on a 4096-bit bus, exactly double the NVIDIA card’s 512.0 GB/s from 16 GB of GDDR6 on a 256-bit bus.

Q: Which card has a higher FP32 compute rating?

A: The NVIDIA RTX A4500 Mobile is rated at 17.66 TFLOPS FP32, which is 25% higher than the AMD Radeon Pro Vega II Duo’s 14.09 TFLOPS.

Q: What are the power requirements for each card?

A: The AMD Radeon Pro Vega II Duo has a 475 W TDP and suggests an 850 W PSU, while the NVIDIA RTX A4500 Mobile has a 140 W TDP and no specified PSU requirement.

The Verdict

The data presents two specialized tools rather than direct competitors. The AMD Radeon Pro Vega II Duo is a high-power, high-bandwidth behemoth aimed at compute-heavy workloads that demand massive memory capacity and half-precision throughput. Its 32 GB of HBM2 memory, 1.02 TB/s bandwidth, and 28.18 TFLOPS FP16 performance make it the choice for large-scale data processing, while its 29% Vulkan lead over the NVIDIA part indicates strong API efficiency. The 94th percentile ranking and 106,750 average score confirm it as the higher-performing part overall.

The NVIDIA RTX A4500 Mobile is a mobile workstation GPU that wins on efficiency and feature set. Its 140 W TDP versus 475 W, combined with ray tracing and tensor core support, makes it suitable for portable workstations needing modern rendering features. Its 6.5% OpenCL lead and 25% FP32 advantage show it is no slouch in general compute, but its 16 GB memory capacity and 512.0 GB/s bandwidth are limiting factors. The 93rd percentile ranking is one point below the AMD card.

For users prioritizing raw compute throughput, memory capacity, or Vulkan performance, the AMD Radeon Pro Vega II Duo is the data-backed choice. For those needing ray tracing, AI acceleration, portability, or power efficiency, the NVIDIA RTX A4500 Mobile is the only option with those capabilities. The AMD card’s 17% higher average score and 29% Vulkan margin must be weighed against its quad-slot size and more than triple the power draw. The verdict depends entirely on whether the workload demands AMD’s bandwidth and FP16 might or NVIDIA’s feature set and efficiency.