NVIDIA GeForce GTX 550 Ti vs NVIDIA RTX A400 Comparison

The NVIDIA RTX A400 and NVIDIA GeForce GTX 550 Ti represent two vastly different eras of GPU design, separated by over a decade of architectural evolution. The data shows a clear and overwhelming performance gap, but the story is more nuanced than raw numbers alone. The RTX A400 is a modern, efficient workstation tool, while the GTX 550 Ti is a legacy part that has been end-of-life for years. This analysis will dissect the benchmark data, architectural differences, and use-case scenarios to determine which card, if any, makes sense today.

The Verdict

Based strictly on the available data, the NVIDIA RTX A400 is the definitive choice for any modern workload. The single head-to-head benchmark result is decisive: the RTX A400 scores 22,844 in Geekbench OpenCL, a staggering 298.6% higher than the GTX 550 Ti's 5,731. This is not a marginal improvement; it is a generational leap that puts the A400 in an entirely different performance class.

The GTX 550 Ti's average benchmark score of 5,731 places it at the 33rd percentile of all GPUs, while the RTX A400's average of 6,078 places it at the 35th percentile. While these percentile rankings are close, they are misleading. The A400's average is buoyed by a broader set of benchmark scores, including a strong Passmark G3D score of 5,983 and a G2D score of 899, whereas the GTX 550 Ti only has a single OpenCL score listed. For anyone building a system today, the RTX A400 is the only rational option. The GTX 550 Ti, with its 1 GB of memory and lack of modern API support like Vulkan, is simply not viable for contemporary software. Its role is strictly as a historical artifact or a basic display adapter, not a functional accelerator.

Where Each One Wins

The data shows that the RTX A400 wins in every measurable category. The most significant win is in raw compute performance, as evidenced by the Geekbench OpenCL score. The A400's 768 shading units, combined with its 2.706 TFLOPS FP32 performance, allow it to handle massively parallel tasks that would cripple the GTX 550 Ti. The GTX 550 Ti, with its 192 shading units and 691.2 GFLOPS FP32 performance, is simply outmatched.

The RTX A400 also wins decisively in terms of feature support. It supports DirectX 12 Ultimate (12_2), while the GTX 550 Ti is limited to DirectX 12 (11_0). This means the A400 is compatible with the latest graphics features like ray tracing and mesh shaders, albeit through its 6 RT cores and 24 Tensor cores. The GTX 550 Ti has no such hardware acceleration. Furthermore, the A400 supports Vulkan 1.4, while the GTX 550 Ti has no Vulkan support listed. This is a critical differentiator for modern games and professional applications that increasingly rely on Vulkan.

Where the GTX 550 Ti might have a theoretical advantage is in memory bandwidth. Its 192-bit bus provides a bandwidth of 98.50 GB/s, which is slightly higher than the A400's 96.00 GB/s from its 64-bit bus. However, this marginal difference is irrelevant. The A400's 4 GB of GDDR6 memory is four times larger than the GTX 550 Ti's 1 GB, allowing it to hold far more textures and data. The GTX 550 Ti would run out of memory long before its bandwidth advantage could be utilized.

Architecture Differences

The architectural gap between these two GPUs is immense. The RTX A400 is built on the Ampere architecture using an 8 nm process at Samsung, featuring 8,700 million transistors on a 200 mm² die. This results in a transistor density of 43.5 million per mm². In contrast, the GTX 550 Ti is based on the Fermi 2.0 architecture, built on a 40 nm process at TSMC. It packs only 1,170 million transistors on a larger 238 mm² die, yielding a density of just 4.9 million per mm². This difference in manufacturing technology is the primary driver of the performance gap.

The A400's GA107 chip is a modern, efficient design that integrates dedicated hardware for ray tracing (6 RT cores) and AI acceleration (24 Tensor cores). The GTX 550 Ti's GF116 chip has no such dedicated units. The A400 also supports a 1:1 FP16 to FP32 ratio, doubling its throughput for half-precision workloads, a feature entirely absent from the GTX 550 Ti. The A400's power efficiency is also a major differentiator, with a 50 W TDP versus the GTX 550 Ti's 116 W. This is achieved through the smaller process node and modern architecture, allowing the A400 to deliver nearly 4x the FP32 performance while consuming less than half the power.

FAQ

Q: Which GPU is faster in compute benchmarks?

A: The NVIDIA RTX A400 is overwhelmingly faster. In the Geekbench OpenCL test, it scores 22,844, a 298.6% improvement over the GTX 550 Ti's score of 5,731.

Q: Can the GTX 550 Ti run modern games with DirectX 12 Ultimate features?

A: No. The GTX 550 Ti only supports DirectX 12 (11_0), while the RTX A400 supports DirectX 12 Ultimate (12_2). This means the A400 can leverage advanced features like ray tracing, but the GTX 550 Ti cannot.

Q: Does the GTX 550 Ti have more memory bandwidth?

A: Yes, the GTX 550 Ti has a slightly higher memory bandwidth of 98.50 GB/s compared to the RTX A400's 96.00 GB/s. However, this is offset by the A400's significantly larger 4 GB memory pool versus the GTX 550 Ti's 1 GB.

Q: Which card is more power-efficient?

A: The RTX A400 is far more power-efficient. It has a TDP of 50 W, while the GTX 550 Ti has a TDP of 116 W. The A400 also does not require a power connector, whereas the GTX 550 Ti needs a 6-pin connector.

Q: What is the production status of each card?

A: The RTX A400 is listed as "Active" in production, while the GTX 550 Ti is "End-of-life." This means the A400 is a current product, while the GTX 550 Ti is a legacy part from 2011.

Q: Which card has a higher average benchmark score?

A: The RTX A400 has a higher average benchmark score of 6,078, compared to the GTX 550 Ti's 5,731. This places the A400 in the 35th percentile of all GPUs, versus the 33rd percentile for the GTX 550 Ti.

Head-to-Head Benchmarks

The only direct comparison available is the Geekbench OpenCL test, and it is a landslide victory for the RTX A400. The A400 scored 22,844, while the GTX 550 Ti managed only 5,731. This represents a delta of 298.6%, meaning the A400 is nearly four times faster in this compute-oriented benchmark. This test is a strong indicator of general GPU compute capability, which is essential for tasks like video encoding, scientific simulation, and machine learning inference.

The RTX A400's additional benchmark scores, while not directly compared to the GTX 550 Ti, paint a picture of a well-rounded performer. Its Passmark G3D score of 5,983 and G2D score of 899 suggest it can handle both 3D rendering and 2D desktop workloads effectively. In contrast, the GTX 550 Ti lacks these data points, making it difficult to assess its performance outside of compute. The data implies that the GTX 550 Ti is a single-purpose, compute-limited device, while the A400 is a versatile accelerator.

Specification Differences

The specification sheets reveal fundamental differences in every core area. The RTX A400 uses an 8 nm process, while the GTX 550 Ti uses a 40 nm process. The A400 has 768 shading units, 24 TMUs, and 16 ROPs, whereas the GTX 550 Ti has 192 shading units, 32 TMUs, and 24 ROPs. The A400 also features 6 RT cores and 24 Tensor cores, which the GTX 550 Ti lacks entirely.

The memory configuration is another major split. The RTX A400 has 4 GB of GDDR6 on a 64-bit bus, while the GTX 550 Ti has 1 GB of GDDR5 on a 192-bit bus. The A400's clock speeds are significantly higher, with a base of 1417 MHz and a boost of 1762 MHz, while the GTX 550 Ti has no base or boost clocks listed, only a memory clock of 1026 MHz. The A400 also boasts a much higher pixel rate (28.19 GPixel/s) and texture rate (42.29 GTexel/s) compared to the GTX 550 Ti's 7.2 GPixel/s and 28.8 GTexel/s. Finally, the A400 uses a PCIe 4.0 x8 interface, while the GTX 550 Ti uses the older PCIe 2.0 x16 standard. The A400 is a single-slot card with no power connectors, while the GTX 550 Ti is a dual-slot card requiring a 6-pin power connector.