NVIDIA RTX 4000 SFF Ada Generation vs NVIDIA RTX A4500 Comparison

Head-to-Head Benchmarks

The head-to-head data presents a clear, if lopsided, picture. Across the two shared benchmark tests, the NVIDIA RTX A4500 secures a decisive victory in both, leaving the RTX 4000 SFF Ada Generation without a single win. The most substantial gap appears in the Geekbench OpenCL test, where the A4500 scores 141,837 against the SFF Ada's 124,812. That is a delta of -12% from the perspective of the newer card, meaning the Ampere-based A4500 outperforms its Ada Lovelace successor by a full twelve percentage points in this compute-heavy workload.

The margin widens further in the Geekbench Vulkan test. Here, the RTX A4500 posts 129,980, while the RTX 4000 SFF Ada Generation manages 109,364. The deltaPct of -15.9% indicates that the A4500 leads by nearly sixteen percent in this graphics-oriented API benchmark. For a card from an older architecture, this is a surprising reversal of expectations, particularly given the architectural advancements attributed to Ada Lovelace. The data suggests that raw architectural efficiency does not automatically translate into benchmark dominance when the older card is equipped with a substantially larger and faster memory subsystem.

Looking at the broader benchmark landscape, the RTX 4000 SFF Ada Generation holds an average benchmark score of 117,088 across its tested workloads. The RTX A4500, however, averages 91,671 when including its three recorded benchmarks, which features the additional 3DMark Steel Nomad DX12 test where it scores 3,196. This discrepancy in average scores is worth investigating. The SFF Ada's average is buoyed by its two strong Geekbench results, while the A4500's average is dragged down by the inclusion of the 3DMark test, which likely represents a different performance metric altogether. When comparing only the shared tests, the A4500 is clearly superior, but the overall averages tell a different story about each card's respective strengths.

The percentile rankings reinforce this nuance. The RTX 4000 SFF Ada Generation sits at the 95th percentile of all GPUs, while the RTX A4500 is at the 93rd. Despite losing both head-to-head matchups, the Ada card ranks higher in the overall distribution of GPU performance. This suggests that the SFF Ada's performance profile is more consistent across a wider range of tasks, or that its two benchmark scores are exceptionally strong relative to the broader market. The A4500's lower percentile, despite its head-to-head wins, implies that its 3DMark result, while strong, does not compensate for the comparative weakness in its Geekbench scores when weighed against the entire field of GPUs.

FAQ

Q: Which card wins in raw compute performance based on the shared benchmarks?

A: The NVIDIA RTX A4500 wins decisively in both shared tests. It leads by 12% in Geekbench OpenCL (141,837 vs 124,812) and by 15.9% in Geekbench Vulkan (129,980 vs 109,364).

Q: Does the newer Ada Lovelace architecture guarantee better benchmark results?

A: No. Despite being built on a newer 5 nm process, the RTX 4000 SFF Ada Generation loses to the older 8 nm Ampere-based RTX A4500 in every head-to-head comparison available in the data.

Q: How do the two cards compare in terms of overall market position?

A: The RTX 4000 SFF Ada Generation holds a higher percentile rank at 95, compared to the RTX A4500's 93rd percentile. This indicates the Ada card performs better relative to the entire GPU market, even though it loses the direct comparisons.

Q: What is the average benchmark score for each card, and how does it relate to their head-to-head results?

A: The RTX 4000 SFF Ada Generation averages 117,088, whereas the RTX A4500 averages 91,671. The A4500's average is lower because it includes a 3DMark Steel Nomad DX12 score of 3,196, which is not part of the SFF Ada's benchmark suite.

Q: Is the RTX A4500 a direct successor to the RTX 4000 SFF Ada Generation?

A: No, the opposite is true. The RTX 4000 SFF Ada Generation lists its predecessor as "Workstation Ampere," which is the generation the RTX A4500 belongs to. The A4500's successor is listed as "Workstation Ada," confirming the generational progression.

Q: Which card has a higher memory bandwidth, and does it appear to affect the benchmark results?

A: The RTX A4500 has a memory bandwidth of 640.0 GB/s, while the RTX 4000 SFF Ada Generation has 280.0 GB/s. The A4500's significantly higher bandwidth is a likely factor in its superior Geekbench scores.

Architecture Differences

The architectural divide between these two NVIDIA workstation cards is substantial, stemming from different design philosophies and manufacturing nodes. The RTX 4000 SFF Ada Generation is built on the AD104 chip using the Ada Lovelace architecture, fabricated on a 5 nm process at TSMC. This is a stark contrast to the RTX A4500, which uses the GA102 chip based on the older Ampere architecture, manufactured on an 8 nm process at Samsung. The process node difference is significant, with the Ada card packing 35,800 million transistors into a 294 mm² die, yielding a transistor density of 121.8M per mm². The A4500, by comparison, has 28,300 million transistors spread across a much larger 628 mm² die, resulting in a density of just 45.1M per mm².

This density advantage does not translate into a raw compute win for the Ada card. The RTX A4500 boasts 7,168 shading units, 224 texture mapping units, and 96 render output units, all of which exceed the RTX 4000 SFF Ada Generation's counts of 6,144 shading units, 192 TMUs, and 64 ROPs. Similarly, the A4500 has 56 RT cores and 224 tensor cores, compared to 48 and 192 respectively on the Ada card. The FP32 compute rating tells the same story: the A4500 delivers 23.65 TFLOPS, while the SFF Ada manages 19.17 TFLOPS. Both cards offer 1:1 FP16 rates, matching their FP32 figures.

The memory architecture represents a fundamental divergence. Both cards feature 20 GB of GDDR6 memory, but the RTX A4500 uses a 320-bit bus interface, resulting in a bandwidth of 640.0 GB/s. The RTX 4000 SFF Ada Generation, constrained by its small form factor design, uses a narrower 160-bit bus, cutting bandwidth to 280.0 GB/s. This 360 GB/s difference is likely the most consequential architectural distinction between the two, as it directly impacts memory-bound workloads. The A4500's memory clock runs at 2000 MHz (16 Gbps effective), while the Ada card's memory runs at 1750 MHz (14 Gbps effective), further widening the bandwidth gap.

Power and physical design also differentiate the two cards dramatically. The RTX 4000 SFF Ada Generation is a remarkable low-power part with a TDP of just 70 W, requiring no external power connectors and only a 250 W suggested PSU. It measures 168 mm in length and 69 mm in height. The RTX A4500, in contrast, has a TDP of 200 W, requires a single 8-pin power connector, and suggests a 550 W PSU. Its physical footprint is larger as well, at 267 mm in length and 112 mm in height. Both cards are dual-slot and use PCIe 4.0 x16, but the A4500 outputs via 4x DisplayPort 1.4a, while the SFF Ada uses 4x mini-DisplayPort 1.4a. Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4.

The Verdict

The data paints a clear picture for different use cases. The RTX A4500 is the undisputed performance winner in the shared benchmarks, taking both Geekbench tests by margins of 12% and 15.9%. Its 640.0 GB/s of memory bandwidth and higher shading unit count provide tangible compute advantages that are reflected in the scores. For users prioritizing raw throughput in OpenCL or Vulkan workloads, the A4500 is the choice, despite being based on the older Ampere architecture and being listed as end-of-life in production status.

The RTX 4000 SFF Ada Generation, however, offers a different kind of value that is not captured in the head-to-head results. Its 70 W TDP and lack of power connectors make it a far more flexible option for space-constrained or power-limited systems. The fact that it achieves a higher 95th percentile ranking versus the A4500's 93rd suggests that its performance profile is more competitive against the broader GPU market, even if it loses the direct comparison. The SFF Ada also carries the advantage of being an active production part, having been released in March 2023, whereas the A4500 was released in November 2021 and is now end-of-life.

The average benchmark scores complicate the narrative further. The SFF Ada's average of 117,088 exceeds the A4500's 91,671, but this is largely due to the inclusion of the 3DMark test in the A4500's suite. Users should interpret the A4500's lower average as a function of test selection rather than a reflection of inferior performance in the shared tests. The verdict hinges on priorities: maximum benchmark performance points to the A4500, while efficiency and market longevity point to the SFF Ada.

Specification Differences

The specification sheets reveal several key differences between the two cards beyond their architectures. The RTX A4500 operates at higher clock speeds, with a base clock of 1050 MHz and a boost clock of 1650 MHz, compared to the RTX 4000 SFF Ada Generation's 720 MHz base and 1560 MHz boost. The A4500 also achieves higher pixel and texture rates, at 158.4 GPixel/s and 369.6 GTexel/s respectively, versus the SFF Ada's 99.84 GPixel/s and 299.5 GTexel/s. These differences are consistent with the A4500's larger die and higher power envelope.

Memory specifications differ in bus width and bandwidth, though both cards have 20 GB of GDDR6. The A4500 uses a 320-bit bus with 640.0 GB/s bandwidth, while the SFF Ada uses a 160-bit bus with 280.0 GB/s. The A4500's memory runs at 2000 MHz (16 Gbps effective), while the SFF Ada's runs at 1750 MHz (14 Gbps effective). The power requirements are dramatically different, with the A4500 rated at 200 W TDP and the SFF Ada at just 70 W. The A4500 requires a 550 W suggested PSU and a single 8-pin connector, whereas the SFF Ada needs only 250 W and no connectors.

Physical dimensions and display outputs also differ. The A4500 is longer and taller at 267 mm and 112 mm, while the SFF Ada measures 168 mm and 69 mm. Both are dual-slot, but the A4500 features 4x DisplayPort 1.4a outputs, while the SFF Ada uses 4x mini-DisplayPort 1.4a. The production status differs as well: the SFF Ada is active, while the A4500 is end-of-life. Release dates show the SFF Ada launched in March 2023, about 16 months after the A4500's November 2021 debut. The predecessor and successor fields confirm their generational relationship, with the A4500 being part of Workstation Ampere and the SFF Ada part of Workstation Ada.

Where Each One Wins

The RTX A4500 wins in every scenario where raw benchmark performance is the primary criterion. Its victories in Geekbench OpenCL and Vulkan make it the stronger choice for applications that rely on these APIs, such as general-purpose GPU compute, rendering, and simulation workloads that are not memory-bandwidth constrained. The A4500's 640.0 GB/s bandwidth and higher FP32 throughput of 23.65 TFLOPS give it a clear edge in data-intensive tasks. Its larger physical size and higher power draw are acceptable trade-offs for users with standard workstation chassis and adequate cooling.

The RTX 4000 SFF Ada Generation wins in scenarios where physical footprint and power efficiency are paramount. Its 168 mm length and 70 W TDP make it suitable for small form factor systems, embedded applications, or multi-GPU configurations where space and thermal budgets are limited. The lack of power connectors simplifies installation, and the 250 W suggested PSU requirement means it can be added to systems with modest power supplies. Its higher percentile ranking at 95 suggests it holds up well against a wider range of GPUs, making it a versatile choice for general workstation duties despite losing the direct comparison to the A4500.

The data also indicates that the SFF Ada is the forward-looking choice, given its active production status and newer architecture. The A4500, while more powerful in benchmarks, is end-of-life, which may affect long-term driver support and availability. For users who prioritize the two specific Geekbench tests, the A4500 is the definitive winner. For users who prioritize the overall balance of performance, efficiency, and market standing, the SFF Ada presents a compelling alternative, particularly in environments where the A4500's 200 W TDP and larger dimensions are prohibitive. The choice ultimately depends on whether the user's workload demands the A4500's superior memory bandwidth and compute cores, or whether the SFF Ada's compact, low-power design is the more critical factor.