AMD Radeon HD 7950 vs AMD Radeon Pro 580X Comparison

AMD Radeon Pro 580X vs. AMD Radeon HD 7950: Benchmark Database Analysis

The AMD Radeon Pro 580X and the AMD Radeon HD 7950 are two end-of-life graphics cards from different eras of AMD's GPU history. The database records a single head-to-head benchmark result between them, with the Pro 580X taking a decisive victory. While the HD 7950 was a formidable card in its day, the architectural and process node advancements of the Pro 580X provide a clear performance gap in the recorded measurements, placing them in different performance percentiles.

Head-to-Head Benchmarks

The only direct comparison available in the database is the Geekbench Metal test. In this test, the AMD Radeon Pro 580X scores 39,577 points, while the AMD Radeon HD 7950 scores 33,951 points. This represents a 16.6% performance delta in favor of the Pro 580X. This is a substantial margin, indicating that the newer card has a significant advantage in compute workloads that leverage Apple's Metal API.

The average benchmark score for the Pro 580X is 38,706 across all recorded tests, which includes Geekbench Metal, OpenCL, and Vulkan results. Its single-test rival, the HD 7950, has an average benchmark score of 33,951, which is identical to its Metal score, as that is the only test recorded for it. This 4,755-point difference in average scores reinforces the Pro 580X's higher standing in the database.

Looking at the broader context, the Pro 580X's average score places it at the 82nd percentile of all GPUs, while the HD 7950 sits at the 78th percentile. While a four-percentile-point difference might seem modest, the actual score gap translates to a tangible performance lead. The Pro 580X's nearest rivals in the database, such as the NVIDIA GeForce MX570 A with an average score of 38,691, show that it is competitive with modern entry-level mobile GPUs. Conversely, the HD 7950's nearest rivals, including the AMD Radeon RX 480 with an average score of 33,997, show that its performance level is now comparable to older mainstream cards like the RX 480, which is a direct descendant of its own architecture lineage.

Where Each One Wins

The AMD Radeon Pro 580X wins the only recorded benchmark comparison. Its 16.6% lead in Geekbench Metal is a clear indicator of its superior compute performance. This card is positioned for professional workloads, particularly within the Apple ecosystem, as indicated by its "Radeon Pro Mac (500X Series)" generation and its Apple MPX bus interface. Its higher scores in Metal, OpenCL, and Vulkan (39,577, 36,426, and 40,115, respectively) suggest it is a well-rounded performer across different compute APIs, making it suitable for tasks like video rendering, 3D modeling, and general GPU-accelerated computing.

The AMD Radeon HD 7950, with its single recorded benchmark result, does not win any head-to-head comparison in this dataset. However, its historical role was as a high-end desktop gaming card from the Southern Islands generation. Its strengths lie in its legacy: it supports a dual-slot form factor, uses standard 2x 6-pin power connectors, and has a suggested power supply of 550 W, which are all typical characteristics of a traditional desktop expansion card. While it lacks the raw compute power of the Pro 580X, its 384-bit memory bus provides a higher memory bandwidth of 240.0 GB/s compared to the Pro 580X's 218.9 GB/s, a specification that could benefit certain bandwidth-sensitive scenarios, though the database does not record a benchmark to confirm this advantage.

Architecture Differences

The two cards represent distinct generations of AMD's Graphics Core Next (GCN) architecture. The Radeon Pro 580X is based on GCN 4.0, built on the Ellesmere chip using a 14 nm process at GlobalFoundries. This newer process allows for a transistor density of 24.6 million transistors per square millimeter, packing 5,700 million transistors into a 232 mm² die. In contrast, the Radeon HD 7950 is based on the original GCN 1.0, using the Tahiti chip on a 28 nm process at TSMC. This older process results in a lower transistor density of 12.3 million per square millimeter, with 4,313 million transistors spread across a larger 352 mm² die.

These architectural differences lead to significant disparities in core configuration and compute capabilities. The Pro 580X has 2,304 shading units, 144 texture mapping units (TMUs), and 32 raster operation units (ROPs). This configuration allows for a pixel rate of 38.40 GPixel/s and a texture rate of 172.8 GTexel/s. Its floating-point performance is rated at 5.530 TFLOPS for both FP32 and FP16 (with a 1:1 ratio). The HD 7950, by comparison, has fewer cores: 1,792 shading units, 112 TMUs, and 32 ROPs. This results in a lower pixel rate of 25.60 GPixel/s and a texture rate of 89.60 GTexel/s. Its FP32 performance is 2.867 TFLOPS, and it has no recorded FP16 capability.

The memory subsystems also differ substantially. The Pro 580X features 8 GB of GDDR5 memory on a 256-bit bus, running at an effective speed of 6.8 Gbps, which yields a bandwidth of 218.9 GB/s. The HD 7950 has 3 GB of GDDR5 memory on a wider 384-bit bus, running at 5 Gbps effective, providing a bandwidth of 240.0 GB/s. The HD 7950's wider bus offers more bandwidth, but the Pro 580X's higher clock speed and larger frame buffer provide more capacity and faster per-pin throughput.

Feature support also differs based on their respective API versions. The Pro 580X supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.3. The HD 7950 supports an earlier version of DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170. This means the Pro 580X is compliant with the latest graphics APIs, while the HD 7950 is limited to an earlier feature level in DirectX 12.

The Verdict

Based strictly on the recorded data, the AMD Radeon Pro 580X is the clear choice for users who prioritize raw compute performance. It is 16.6% faster than the HD 7950 in the Geekbench Metal test, holds a higher average benchmark score, and sits in a higher performance percentile. Its modern GCN 4.0 architecture, 14 nm process, and support for the latest API versions make it a more capable card for contemporary workloads. It is especially suitable for users within the Apple ecosystem, given its "Radeon Pro Mac" generation and Apple MPX bus interface.

The AMD Radeon HD 7950, while outclassed in this comparison, remains a functional legacy card. Its higher memory bandwidth (240.0 GB/s vs. 218.9 GB/s) is a notable specification, but the database does not provide a benchmark to demonstrate its benefit. For anyone building a new system or upgrading from an older platform, the data clearly favors the Pro 580X. It offers a significant performance lead, more VRAM (8 GB vs. 3 GB), and better API support. The HD 7950 should only be considered for legacy systems where its specific form factor and power connector requirements are already met, and where the lower performance is acceptable.

FAQ

Q: Which card is faster in the recorded benchmarks?

A: The AMD Radeon Pro 580X is faster. It scores 39,577 in Geekbench Metal, which is 16.6% higher than the HD 7950's score of 33,951.

Q: What are the average benchmark scores for these two cards?

A: The Pro 580X has an average benchmark score of 38,706 across all its recorded tests. The HD 7950 has an average score of 33,951, based solely on its single Geekbench Metal result.

Q: How do their memory configurations compare?

A: The Pro 580X has 8 GB of GDDR5 memory on a 256-bit bus with a bandwidth of 218.9 GB/s. The HD 7950 has 3 GB of GDDR5 memory on a 384-bit bus with a higher bandwidth of 240.0 GB/s.

Q: Which card supports newer graphics APIs?

A: The Pro 580X supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.3. The HD 7950 supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170, meaning the Pro 580X has a higher DirectX feature level and a newer Vulkan version.

Q: What are the power requirements for each card?

A: The Pro 580X has a TDP of 185 W and uses an Apple MPX bus interface. The HD 7950 has a TDP of 200 W, requires 2x 6-pin power connectors, and has a suggested power supply of 550 W.

Q: Are these cards still in production?

A: No, both are listed as end-of-life in the database. The Pro 580X was released in March 2019, while the HD 7950 was released in January 2012.

Specification Differences

| Specification | AMD Radeon Pro 580X | AMD Radeon HD 7950 |

| :--- | :--- | :--- |

| Architecture | GCN 4.0 | GCN 1.0 |

| Process Node | 14 nm | 28 nm |

| Foundry | GlobalFoundries | TSMC |

| Transistors | 5,700 million | 4,313 million |

| Die Size | 232 mm² | 352 mm² |

| Transistor Density | 24.6M / mm² | 12.3M / mm² |

| Base Clock | 1100 MHz | Not specified |

| Boost Clock | 1200 MHz | Not specified |

| Memory Size | 8 GB | 3 GB |

| Memory Bus Width | 256 bit | 384 bit |

| Memory Bandwidth | 218.9 GB/s | 240.0 GB/s |

| Shading Units | 2304 | 1792 |

| TMUs | 144 | 112 |

| ROPs | 32 | 32 |

| Pixel Rate | 38.40 GPixel/s | 25.60 GPixel/s |

| Texture Rate | 172.8 GTexel/s | 89.60 GTexel/s |

| FP32 Performance | 5.530 TFLOPS | 2.867 TFLOPS |

| FP16 Performance | 5.530 TFLOPS (1:1) | Not specified |

| TDP | 185 W | 200 W |

| Slot Width | IGP | Dual-slot |

| Power Connectors | Not specified | 2x 6-pin |

| Suggested PSU | Not specified | 550 W |

| Bus Interface | Apple MPX | PCIe 3.0 x16 |

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

| DirectX Support | 12 (12_0) | 12 (11_1) |

| Vulkan Support | 1.3 | 1.2.170 |

| Release Date | 2019-03-17 | 2012-01-30 |