AMD Radeon RX 550X vs NVIDIA Quadro K5000 Comparison

The AMD Radeon RX 550X and NVIDIA Quadro K5000 are both end-of-life graphics cards, but they represent vastly different design philosophies and eras. The data shows a split decision across the two benchmark tests, with the professional-grade Quadro taking a commanding lead in OpenCL compute while the newer Radeon edges ahead in the Vulkan API. This head-to-head analysis reveals how architectural age and market positioning influence real-world performance, with the Quadro K5000's raw compute resources proving formidable despite its older 28 nm process.

Head-to-Head Benchmarks

The most decisive result in this comparison is the Geekbench OpenCL test, where the NVIDIA Quadro K5000 scores 11,418 against the AMD Radeon RX 550X's 9,662. That is a 15.4% margin for NVIDIA, a substantial gap that highlights the Quadro's superior raw compute throughput. The Quadro K5000's advantage in this workload is consistent with its position among its nearest rivals—it sits just 0.1% behind the NVIDIA GeForce GTX 960M and 0.2% behind the AMD Radeon Pro WX 2100, with an average score of 9,637. Interestingly, the RX 550X posts an average benchmark score of 10,481, which is actually higher than the Quadro's average of 9,637, suggesting that the Radeon's overall performance profile is more balanced across different types of workloads.

The Vulkan test tells a different story, with the AMD Radeon RX 550X taking a narrow 1.2% victory with a score of 11,299 versus the Quadro K5000's 11,169. This slim margin indicates that for modern graphics APIs, the newer GCN 4.0 architecture has a slight edge, likely due to better driver optimization and hardware features designed for contemporary game engines. The Quadro K5000's Vulkan score of 11,169 is remarkably close to its OpenCL result of 11,418, showing consistent performance across different compute frameworks, while the RX 550X shows a significant improvement from 9,662 in OpenCL to 11,299 in Vulkan—a 16.9% jump that underscores its strength in modern API environments.

When placing these results in context, the RX 550X's Vulkan score of 11,299 is 1.2% ahead of the AMD Radeon RX 6500M's average of 10,362 and 1.2% ahead of the NVIDIA Tesla C2075's 10,400, according to the nearest rival data. The Quadro K5000's OpenCL dominance is similarly contextualized by its rival list, where it trails the NVIDIA Quadro P4000 by just 0.3% (9,665 vs 9,637 average) and the NVIDIA Tesla C2070 by 0.8% (9,716 vs 9,637). These benchmark results indicate that while the RX 550X is a more modern solution, the Quadro K5000's sheer compute muscle—with 1,536 shading units and a 256-bit memory bus—allows it to outperform in compute-heavy scenarios.

Architecture Differences

The architectural divide between these two cards is stark, starting with the manufacturing process. The AMD Radeon RX 550X is built on a 14 nm process at GlobalFoundries, while the NVIDIA Quadro K5000 uses a 28 nm process at TSMC. This process advantage translates directly into transistor density: the RX 550X packs 21.4 million transistors per square millimeter, nearly double the Quadro's 12.0M / mm². The RX 550X's Lexa chip contains 2,200 million transistors on a 103 mm² die, whereas the Quadro K5000's GK104 chip houses 3,540 million transistors on a much larger 294 mm² die.

The GPU architectures themselves are generations apart. The RX 550X employs GCN 4.0 from the Polaris generation, released in December 2018, while the Quadro K5000 uses the Kepler architecture from the Quadro Kepler Kx000 generation, released in August 2012. This six-year gap is evident in feature support: the RX 550X supports DirectX 12 (12_0) and Vulkan 1.3, whereas the Quadro K5000 only manages DirectX 12 (11_0) and Vulkan 1.2.175. Both cards support OpenGL 4.6, but the Radeon's newer API profile gives it better compatibility with modern software.

Clock speeds also reflect the architectural differences. The RX 550X runs at a base clock of 1100 MHz with a boost of 1183 MHz, while the Quadro K5000 is locked at a flat 706 MHz for both base and boost. This clock advantage, combined with the 14 nm process, allows the RX 550X to achieve its performance with a dramatically lower power draw of 50 W TDP versus the Quadro's 122 W TDP. The Radeon also uses a PCIe 3.0 x8 interface, while the Quadro relies on the older PCIe 2.0 x16 standard, though the Quadro's wider memory bus—256-bit versus 128-bit—partially compensates with 172.8 GB/s of bandwidth versus the RX 550X's 96.00 GB/s.

The compute capabilities show a clear trade-off. The Quadro K5000 has 1,536 shading units, 128 TMUs, and 32 ROPs, producing 2.169 TFLOPS of FP32 performance and 90.37 GTexel/s texture rate. The RX 550X counters with 512 shading units, 32 TMUs, and 16 ROPs, achieving 1,211.4 GFLOPS FP32 and 37.86 GTexel/s. However, the RX 550X supports FP16 at a 1:1 ratio (1,211.4 GFLOPS), while the Quadro has no FP16 capability listed. The Quadro's pixel rate of 22.59 GPixel/s exceeds the Radeon's 18.93 GPixel/s, indicating better fill-rate performance for certain rendering tasks.

FAQ

Q: Which card has better overall compute performance?

A: Based on the Geekbench OpenCL test, the NVIDIA Quadro K5000 wins decisively with a score of 11,418 versus the AMD Radeon RX 550X's 9,662, a 15.4% advantage. However, the Radeon's average benchmark score of 10,481 is higher than the Quadro's 9,637, indicating the RX 550X is more consistent across varied workloads.

Q: How do the two cards compare in modern graphics API performance?

A: The AMD Radeon RX 550X takes a narrow win in Geekbench Vulkan with 11,299 versus the Quadro K5000's 11,169, a 1.2% margin. The Radeon also supports Vulkan 1.3 and DirectX 12 (12_0), while the Quadro is limited to Vulkan 1.2.175 and DirectX 12 (11_0).

Q: Why is the Quadro K5000 so much larger despite being older?

A: The Quadro K5000 uses a 28 nm process at TSMC, requiring a 294 mm² die to house 3,540 million transistors. The Radeon RX 550X uses a 14 nm process at GlobalFoundries, fitting 2,200 million transistors onto a 103 mm² die with much higher density.

Q: Which card consumes less power?

A: The AMD Radeon RX 550X has a TDP of 50 W and requires no power connectors, while the NVIDIA Quadro K5000 has a 122 W TDP and requires a single 6-pin power connector. The Radeon also suggests a 250 W PSU versus the Quadro's 300 W recommendation.

Q: What are the memory specifications of each card?

A: Both cards have 4 GB of GDDR5 memory, but the Quadro K5000 uses a 256-bit bus giving 172.8 GB/s bandwidth, while the RX 550X uses a 128-bit bus for 96.00 GB/s. The Radeon's memory runs at 1500 MHz (6 Gbps effective) versus the Quadro's 1350 MHz (5.4 Gbps effective).

Q: Which card has better driver and API longevity?

A: The Radeon RX 550X supports Vulkan 1.3 and DirectX 12 (12_0), reflecting its 2018 release. The Quadro K5000 from 2012 supports Vulkan 1.2.175 and DirectX 12 (11_0), suggesting the Radeon is better suited for newer software environments.

Specification Differences

| Specification | AMD Radeon RX 550X | NVIDIA Quadro K5000 |

|---|---|---|

| Architecture | GCN 4.0 | Kepler |

| Process Node | 14 nm | 28 nm |

| Foundry | GlobalFoundries | TSMC |

| Transistors | 2,200 million | 3,540 million |

| Die Size | 103 mm² | 294 mm² |

| Transistor Density | 21.4M / mm² | 12.0M / mm² |

| Base Clock | 1100 MHz | 706 MHz |

| Boost Clock | 1183 MHz | 706 MHz |

| Memory Clock | 1500 MHz (6 Gbps effective) | 1350 MHz (5.4 Gbps effective) |

| Memory Bus Width | 128 bit | 256 bit |

| Memory Bandwidth | 96.00 GB/s | 172.8 GB/s |

| Shading Units | 512 | 1536 |

| TMUs | 32 | 128 |

| ROPs | 16 | 32 |

| Pixel Rate | 18.93 GPixel/s | 22.59 GPixel/s |

| Texture Rate | 37.86 GTexel/s | 90.37 GTexel/s |

| FP32 Performance | 1,211.4 GFLOPS | 2.169 TFLOPS |

| FP16 Performance | 1,211.4 GFLOPS (1:1) | None |

| TDP | 50 W | 122 W |

| Power Connectors | None | 1x 6-pin |

| Suggested PSU | 250 W | 300 W |

| Bus Interface | PCIe 3.0 x8 | PCIe 2.0 x16 |

| Display Outputs | 1x DVI, 1x HDMI 2.0b, 1x DisplayPort 1.4a | 2x DVI, 2x DisplayPort 1.2 |

| DirectX Support | 12 (12_0) | 12 (11_0) |

| Vulkan Support | 1.3 | 1.2.175 |

| Dimensions | 145 mm (5.7 inches) | 267 mm (10.5 inches) x 111 mm (4.4 inches) |

| Release Date | 2018-12-15 | 2012-08-16 |

Where Each One Wins

The AMD Radeon RX 550X is the clear winner for power-constrained and compact builds. Its 50 W TDP requires no auxiliary power connectors, making it suitable for systems with a 250 W power supply, and its 145 mm length fits into small form factor cases. The Radeon also excels in modern API environments, as evidenced by its Vulkan 1.3 support and 1.2% lead over the Quadro in the Geekbench Vulkan test. For users running contemporary applications that leverage DirectX 12 (12_0) features, the RX 550X offers better forward compatibility despite having fewer shading units. The card's FP16 support at 1:1 ratio also provides a compute advantage for workloads that utilize half-precision math.

The NVIDIA Quadro K5000 dominates in raw compute throughput and memory bandwidth. Its OpenCL score of 11,418 is 15.4% higher than the Radeon's, and the 172.8 GB/s memory bandwidth—nearly double the RX 550X's 96.00 GB/s—makes it better suited for memory-intensive professional workloads like large dataset processing or high-resolution texture streaming. The Quadro's 2.169 TFLOPS FP32 performance and 90.37 GTexel/s texture rate are significantly higher, making it the stronger choice for compute-heavy rendering tasks. Its 256-bit memory bus and 32 ROPs also provide superior fill-rate performance, with 22.59 GPixel/s versus the Radeon's 18.93 GPixel/s.

The benchmark split reflects this dichotomy: the Quadro K5000 wins OpenCL by a wide margin, while the RX 550X takes Vulkan by a slim edge. The Quadro's average benchmark score of 9,637 places it at the 46th percentile of all GPUs, while the Radeon sits at the 49th percentile with an average of 10,481. This suggests that for general-purpose compute and legacy professional applications, the Quadro K5000 remains a viable option despite its age, while the RX 550X offers a more balanced, efficient package for modern workloads. The Quadro's launch MSRP was 2,499 USD, reflecting its original professional positioning, though both cards are now end-of-life products.