AMD Radeon Pro Vega 64X vs NVIDIA RTX A4500 Comparison

NVIDIA RTX A4500 and AMD Radeon Pro Vega 64X represent two distinct approaches to workstation graphics, separated by process node, memory technology, and raw compute strategy. The data shows a clear overall winner, but the specific benchmark results reveal where each card holds an edge.

Head-to-Head Benchmarks

The only direct benchmark comparison available in the data is the Geekbench OpenCL test, and it is decisively one-sided. The NVIDIA RTX A4500 scores 141,837 points, while the AMD Radeon Pro Vega 64X scores 78,467 points. This translates to an 80.8% delta in favor of the RTX A4500. To put that in perspective, the RTX A4500 delivers nearly double the OpenCL performance of the Vega 64X. This is a massive gap that will dominate any workload relying on general-purpose GPU compute.

Looking beyond the direct head-to-head, the average benchmark scores reinforce this narrative. The RTX A4500 posts an average benchmark score of 91,671, while the Vega 64X lags at 80,959. The RTX A4500 also ranks in the 93rd percentile among all GPUs, compared to the 92nd percentile for the Vega 64X. While the percentile difference is small, the raw score gap of roughly 13.2% is substantial. The RTX A4500's nearest rival, the AMD Radeon Instinct MI60, scores 92,466, which is only 0.9% behind the A4500. The Vega 64X, in contrast, sits just 1.3% ahead of the AMD Radeon PRO W6600 and 1.4% ahead of the NVIDIA GeForce RTX 5090 in its own rival list.

The other benchmark results for the RTX A4500 show strong performance across different APIs. In 3DMark Steel Nomad DX12, it scores 3,196. In Geekbench Vulkan, it scores 129,980. The Vega 64X has no comparable results in these tests. The Vulkan score is particularly noteworthy, as it trails the OpenCL score by only about 8.4%, suggesting consistent performance across API boundaries. The Vega 64X does have a Geekbench Metal score of 83,450, which is higher than its OpenCL score of 78,467, but there is no direct comparison available for that test.

The texture and pixel throughput numbers further illustrate the architectural differences. The RTX A4500 achieves a pixel rate of 158.4 GPixel/s and a texture rate of 369.6 GTexel/s. The Vega 64X manages 93.95 GPixel/s and 375.8 GTexel/s. While the pixel rate is 68.6% higher on the A4500, the texture rate is actually slightly higher on the Vega 64X, by about 1.7%. This suggests the Vega 64X has a more balanced texture unit configuration relative to its shading units, but it is not enough to overcome the A4500's other advantages.

The Verdict

The data is unambiguous: the NVIDIA RTX A4500 is the superior card for virtually any compute-intensive workstation task. Its 80.8% lead in OpenCL performance is a decisive advantage that no other metric in the pack can offset. The A4500 also has a higher average benchmark score and a higher percentile ranking. For professionals running OpenCL-based workloads, whether in rendering, simulation, or data processing, the choice is clear.

The AMD Radeon Pro Vega 64X is not without merit, but its strengths are narrower. Its higher texture rate, though marginal, could benefit specific texturing-heavy tasks. Its HBM2 memory with a 2048-bit bus offers a different memory architecture, but the raw bandwidth of 512.0 GB/s is lower than the A4500's 640.0 GB/s. The Vega 64X also has a higher base clock of 1250 MHz versus 1050 MHz, but the A4500's boost clock of 1650 MHz is higher than the Vega 64X's 1468 MHz.

The A4500 is the pick for anyone prioritizing raw compute performance. The Vega 64X is only viable for those with legacy software dependencies or specific Metal-based workflows, where its 83,450 Metal score may be relevant. It is also notably the Vega 64X is an integrated graphics processor (IGP) with no power connectors, while the A4500 is a dual-slot card drawing 200 W. The A4500 is end-of-life, as is the Vega 64X, so neither card is a future-proof investment, but the A4500 is the better choice today.

FAQ

Q: How much faster is the NVIDIA RTX A4500 than the AMD Radeon Pro Vega 64X in OpenCL?

A: The RTX A4500 scores 141,837 in Geekbench OpenCL, while the Vega 64X scores 78,467. This represents an 80.8% advantage for the RTX A4500.

Q: Which card has a higher average benchmark score?

A: The RTX A4500 has an average benchmark score of 91,671, which is higher than the Vega 64X's average of 80,959.

Q: Does the AMD Radeon Pro Vega 64X win any direct benchmark comparison?

A: No. In the only head-to-head benchmark test (Geekbench OpenCL), the RTX A4500 wins with a delta of 80.8%. The wins counter shows 1 win for the A4500 and 0 for the Vega 64X.

Q: What is the memory bandwidth difference between the two cards?

A: The RTX A4500 has a memory bandwidth of 640.0 GB/s, while the Vega 64X has a memory bandwidth of 512.0 GB/s.

Q: How do their texture rates compare?

A: The Vega 64X has a slightly higher texture rate of 375.8 GTexel/s, compared to the RTX A4500's 369.6 GTexel/s, a difference of about 1.7% in favor of the Vega 64X.

Q: What is the percentile ranking for each card?

A: The RTX A4500 ranks in the 93rd percentile among all GPUs, and the Vega 64X ranks in the 92nd percentile.

Specification Differences

The two cards differ across nearly every major specification. The NVIDIA RTX A4500 uses a GA102 chip on an 8 nm Samsung process, while the AMD Radeon Pro Vega 64X uses a Vega 10 chip on a 14 nm GlobalFoundries process. The RTX A4500 has 28,300 million transistors on a 628 mm² die, compared to 12,500 million transistors on a 495 mm² die for the Vega 64X. The transistor density is 45.1M per mm² for the A4500 and 25.3M per mm² for the Vega 64X.

Memory configurations also diverge sharply. The A4500 has 20 GB of GDDR6 memory on a 320-bit bus, while the Vega 64X has 16 GB of HBM2 memory on a 2048-bit bus. The A4500's memory clock is 2000 MHz with 16 Gbps effective speed, whereas the Vega 64X runs at 1000 MHz with 2 Gbps effective speed. Bandwidth favors the A4500 at 640.0 GB/s versus 512.0 GB/s.

The compute units differ as well. The A4500 has 7,168 shading units, 224 TMUs, and 96 ROPs. The Vega 64X has 4,096 shading units, 256 TMUs, and 64 ROPs. The A4500 also includes 56 RT cores and 224 tensor cores, which the Vega 64X lacks entirely. Clock speeds show the Vega 64X with a higher base clock of 1250 MHz versus 1050 MHz, but the A4500 boosts to 1650 MHz versus 1468 MHz.

Power and physical specifications are similarly distinct. The A4500 has a TDP of 200 W, is dual-slot, uses a single 8-pin power connector, and requires a 550 W PSU. The Vega 64X has a TDP of 250 W, is an IGP with no power connectors, and has no suggested PSU. The A4500 uses PCIe 4.0 x16, while the Vega 64X uses PCIe 3.0 x16. The A4500 offers 4x DisplayPort 1.4a outputs, while the Vega 64X's display outputs are portable-device dependent.

Architecture Differences

The architectural gulf between these two cards is fundamental. The RTX A4500 is built on NVIDIA's Ampere architecture, which is a workstation-generation design (Ax000). The Vega 64X uses AMD's GCN 5.0 architecture from the Radeon Pro Mac Vega series. The A4500's 8 nm Samsung process is considerably more advanced than the 14 nm GlobalFoundries node used for the Vega 64X, which explains the transistor density difference of 45.1M per mm² versus 25.3M per mm².

The A4500 includes dedicated RT cores (56) and tensor cores (224), which are absent from the Vega 64X. This means the A4500 can accelerate ray tracing and AI-based workloads in hardware, while the Vega 64X has no such capabilities. The Vega 64X does have a 2:1 FP16 ratio, delivering 24.05 TFLOPS of FP16 performance versus its 12.03 TFLOPS of FP32. The A4500 delivers 23.65 TFLOPS for both FP32 and FP16, indicating a 1:1 ratio. This is a notable difference: the Vega 64X can double its throughput on FP16 workloads, while the A4500 does not.

API support also differs. The A4500 supports DirectX 12 Ultimate (12_2), while the Vega 64X supports DirectX 12 (12_1). Both support OpenGL 4.6, but the A4500 supports Vulkan 1.4 versus Vulkan 1.3 for the Vega 64X. The A4500's memory type is GDDR6, which is a traditional discrete GPU memory, while the Vega 64X uses HBM2, which is a stacked memory technology with a much wider bus. The Vega 64X is an IGP, meaning it is designed for integrated use in a portable device, whereas the A4500 is a discrete dual-slot card.

Where Each One Wins

The NVIDIA RTX A4500 wins in virtually every compute scenario. Its 80.8% lead in OpenCL makes it the default choice for general-purpose GPU computing. Its 23.65 TFLOPS of FP32 performance is nearly double the Vega 64X's 12.03 TFLOPS, which directly benefits single-precision floating-point workloads like scientific simulation, machine learning inference, and 3D rendering. The A4500's 640.0 GB/s memory bandwidth is also 25% higher, which helps with memory-bound tasks. The presence of RT cores and tensor cores gives the A4500 a hardware advantage in ray-traced rendering and AI-accelerated workflows. Its higher pixel rate of 158.4 GPixel/s versus 93.95 GPixel/s makes it better suited for high-resolution output and heavy rasterization.

The AMD Radeon Pro Vega 64X has a few narrow advantages. Its texture rate of 375.8 GTexel/s is slightly higher than the A4500's 369.6 GTexel/s, which could provide a marginal edge in texturing-heavy scenes. Its FP16 performance of 24.05 TFLOPS is actually higher than the A4500's 23.65 TFLOPS, so for workloads that can leverage FP16 with a 2:1 ratio, the Vega 64X may pull ahead. Its HBM2 memory with a 2048-bit bus offers a different latency profile, though the lower bandwidth of 512.0 GB/s limits its overall memory throughput. The Vega 64X is also an IGP, meaning it is designed for portable devices where a discrete card is not an option.

In practical terms, the A4500 is the winner for any serious workstation user. The Vega 64X is a niche product for specific Mac or portable-device environments, where its Metal score of 83,450 and integrated form factor are relevant. But the data shows that the A4500 is the superior performer in the areas that matter most: raw compute, memory bandwidth, and feature support.