NVIDIA RTX A5000 vs NVIDIA RTX PRO 4500 Blackwell Comparison

The NVIDIA RTX A5000 and the NVIDIA RTX PRO 4500 Blackwell represent two distinct generations of professional workstation graphics. The data shows a clear generational shift, with the newer Blackwell architecture delivering substantial performance gains across every benchmark recorded, though the older Ampere card retains specific advantages in system compatibility and legacy software support.

Head-to-Head Benchmarks

The benchmark results paint a one-sided picture, with the RTX PRO 4500 Blackwell winning all nine head-to-head comparisons. The most significant margin appears in the modern DirectX 12 workload, 3DMark Steel Nomad, where the RTX PRO 4500 scores 7025 against the RTX A5000’s 3783, a delta of -46.1% (meaning the A5000 trails by that margin). This 86% raw score advantage indicates the Blackwell card is dramatically better suited for current-generation rendering pipelines and heavy geometry workloads.

The Geekbench Vulkan test shows a similar story, with the RTX PRO 4500 posting 221768 versus the A5000’s 137828, a -37.9% delta. This suggests the newer card’s architectural refinements translate directly into improved low-level API performance, which is critical for professional applications that leverage Vulkan for compute and rendering. The gap here is nearly 61% in favor of the Blackwell card.

Legacy DirectX performance tells the same tale, albeit with smaller absolute numbers. In PassMark DirectX 11, the RTX PRO 4500 scores 320 against the A5000’s 187, a -41.6% delta. The DirectX 9 test shows 397 versus 251, a -36.8% delta, while DirectX 10 sees 204 versus 153, a -25% delta. Even the oldest API tested, DirectX 12, shows a -26.9% delta (119 versus 87). These consistent margins across API generations indicate that the performance uplift is not limited to modern workloads but reflects a fundamentally faster GPU.

Compute performance also favors the newer card decisively. In PassMark GPU Compute, the RTX PRO 4500 scores 19255 versus the A5000’s 12455, a -35.3% delta. This 54% advantage in raw compute throughput aligns with the card’s higher FP32 and FP16 ratings. The PassMark G3D test, a general-purpose gaming and graphics metric, shows 33360 versus 22541, a -32.4% delta, reinforcing the overall performance hierarchy.

Even the 2D workload, PassMark G2D, shows a noticeable gap: 1336 versus 1032, a -22.8% delta. While 2D performance is rarely a bottleneck in workstation tasks, this result suggests the Blackwell card also handles basic desktop compositing and display operations more efficiently. Across the board, the RTX PRO 4500 Blackwell is faster, with deltas ranging from -22.8% to -46.1% in favor of the newer card.

FAQ

Q: How much faster is the RTX PRO 4500 Blackwell in the most demanding test?

A: In 3DMark Steel Nomad (DX12), the RTX PRO 4500 scores 7025, which is 3242 points higher than the RTX A5000’s 3783. The delta is -46.1%, meaning the A5000 trails by that percentage.

Q: Which card has better compute performance?

A: The RTX PRO 4500 Blackwell wins, scoring 19255 in PassMark GPU Compute versus 12455 for the A5000, a -35.3% delta. This aligns with its higher FP32 throughput of 50.53 TFLOPS versus 27.77 TFLOPS.

Q: Does the RTX A5000 win any benchmark?

A: No. The head-to-head data shows the RTX PRO 4500 Blackwell winning all 9 recorded tests, with the A5000 registering 0 wins and the Blackwell card 9 wins.

Q: How do the cards compare in Vulkan performance?

A: The RTX PRO 4500 Blackwell scores 221768 in Geekbench Vulkan, while the RTX A5000 scores 137828. This represents a -37.9% delta, giving the newer card a roughly 61% raw score advantage.

Q: What about legacy DirectX 9 performance?

A: The RTX PRO 4500 Blackwell leads with a score of 397, compared to 251 for the A5000. The delta is -36.8%, showing the newer card retains its advantage even on older APIs.

Q: Are the cards similar in overall market position?

A: The RTX A5000 sits at the 78th percentile of all GPUs, while the RTX PRO 4500 Blackwell is at the 76th percentile. Despite the A5000 having a slightly higher percentile, its average benchmark score of 33622 is higher than the Blackwell card’s 31532, reflecting different performance distributions across the full test suite.

Architecture Differences

The two cards are built on fundamentally different architectures. The RTX A5000 uses the Ampere architecture with the GA102 chip, manufactured by Samsung on an 8 nm process. It packs 28,300 million transistors into a 628 mm² die, yielding a transistor density of 45.1M per mm². The RTX PRO 4500 Blackwell, by contrast, uses the Blackwell 2.0 architecture with the GB203 chip, built by TSMC on a 5 nm process. It contains 45,600 million transistors in a much smaller 378 mm² die, achieving a density of 120.6M per mm². This represents a dramatic shift in manufacturing efficiency, with the newer card fitting 61% more transistors into 40% less silicon area.

Core configuration differs substantially. The A5000 has 8192 shading units, 256 TMUs, and 96 ROPs, while the RTX PRO 4500 Blackwell increases each of these to 10496 shading units, 328 TMUs, and 112 ROPs. The Blackwell card also features 82 ray tracing cores versus 64 on the A5000, and 328 tensor cores versus 256. These increases in every compute unit category explain much of the performance delta observed in benchmarks.

Memory architecture is another major divergence. The A5000 uses 24 GB of GDDR6 on a 384-bit bus, delivering 768.0 GB/s of bandwidth. The RTX PRO 4500 Blackwell uses 32 GB of GDDR7 on a 256-bit bus, achieving 896.0 GB/s of bandwidth. Despite the narrower bus, the newer GDDR7 memory runs at 1750 MHz (28 Gbps effective) versus 2000 MHz (16 Gbps effective) on the A5000, allowing the Blackwell card to provide both more capacity and higher bandwidth. The process node difference, from 8 nm to 5 nm, also enables higher clock speeds: the A5000 boosts to 1695 MHz, while the RTX PRO 4500 boosts to 2407 MHz.

Specification Differences

The two cards differ across nearly every specification category. The RTX PRO 4500 Blackwell is built on a 5 nm process versus 8 nm for the A5000. It has a larger transistor count at 45,600 million versus 28,300 million, but a smaller die at 378 mm² versus 628 mm². Transistor density favors the newer card at 120.6M per mm² versus 45.1M per mm².

Clock speeds are higher on the Blackwell card: base 1635 MHz versus 1170 MHz, boost 2407 MHz versus 1695 MHz. Memory differs in type (GDDR7 versus GDDR6), size (32 GB versus 24 GB), bus width (256-bit versus 384-bit), and effective speed (28 Gbps versus 16 Gbps). Bandwidth is 896.0 GB/s versus 768.0 GB/s.

Compute capabilities diverge significantly: FP32 and FP16 both stand at 50.53 TFLOPS on the Blackwell card versus 27.77 TFLOPS on the A5000. Pixel rate is 269.6 GPixel/s versus 162.7 GPixel/s, and texture rate is 789.5 GTexel/s versus 433.9 GTexel/s. The RTX PRO 4500 Blackwell has more shading units (10496 versus 8192), TMUs (328 versus 256), ROPs (112 versus 96), RT cores (82 versus 64), and tensor cores (328 versus 256).

Power characteristics differ notably: the Blackwell card has a lower TDP of 200 W versus 230 W for the A5000, despite delivering higher performance. The power connector changes from 1x 8-pin on the A5000 to 1x 16-pin on the RTX PRO 4500. Bus interface upgrades from PCIe 4.0 x16 to PCIe 5.0 x16. Display outputs change from 4x DisplayPort 1.4a to 4x DisplayPort 2.1b. Physical dimensions are nearly identical in length (267 mm) and height (112 mm versus 111 mm), with the Blackwell card having a defined width of 40 mm. Production status differs, with the A5000 end-of-life and the RTX PRO 4500 active. Release dates are April 2021 for the A5000 and March 2025 for the Blackwell card.

Where Each One Wins

The RTX PRO 4500 Blackwell wins in every performance benchmark, making it the clear choice for raw speed. Its 50.53 TFLOPS FP32 throughput, 896.0 GB/s memory bandwidth, and 32 GB GDDR7 capacity position it for demanding modern workloads like real-time ray tracing, AI inference, and large dataset processing. The higher Vulkan score (221768 versus 137828) and 3DMark Steel Nomad score (7025 versus 3783) suggest it excels in current-generation professional applications that leverage DX12 and Vulkan APIs. Its lower TDP of 200 W versus 230 W, despite higher performance, also makes it more power-efficient. The PCIe 5.0 interface provides double the bandwidth of the A5000’s PCIe 4.0 for data transfer to and from the host system.

The RTX A5000, despite losing all benchmarks, still holds relevance in specific contexts. Its higher percentile ranking (78th versus 76th) and higher average benchmark score (33622 versus 31532) indicate it performs better across a broader mix of tests, including those not in the head-to-head set. The A5000’s wider 384-bit memory bus, while running slower GDDR6, may offer advantages in certain memory-access patterns that favor wide buses over faster narrow ones. Its 8 nm process and older architecture mean it is end-of-life, but for legacy software that was optimized for Ampere or for systems with only 8-pin power connectors, the A5000 remains a viable option. The A5000’s DisplayPort 1.4a outputs are still widely supported by existing monitors, whereas the Blackwell card’s DisplayPort 2.1b requires newer display hardware to fully utilize. For organizations standardized on PCIe 4.0 infrastructure, the A5000 integrates without requiring platform upgrades, though the Blackwell card’s backward compatibility with PCIe 4.0 slots mitigates this concern. Ultimately, the data shows the RTX PRO 4500 Blackwell as the superior performer, with the A5000 serving as a capable older-generation alternative for specific compatibility-driven use cases.