AMD Radeon 540 vs AMD Radeon HD 8870M Comparison

# AMD Radeon HD 8870M vs AMD Radeon 540: A Tale of Two GCN Eras

The AMD Radeon HD 8870M and AMD Radeon 540 represent two distinct generations of AMD's Graphics Core Next architecture, separated by roughly four years of silicon evolution. The data reveals a fascinating split: the older HD 8870M wins decisively in OpenCL compute performance, while the newer Radeon 540 counters with superior API support, lower power demands, and a more modern feature set. Benchmark results show the HD 8870M delivering an 8462 Geekbench OpenCL score against the Radeon 540's 6184, a 36.8% advantage. Yet the Radeon 540's Vulkan score of 9162 hints at strengths that the single OpenCL comparison fails to capture. For users prioritizing raw compute throughput in OpenCL workloads, the HD 8870M is the clear choice. For those needing modern API compatibility, lower power consumption, and a single-slot form factor, the Radeon 540 presents a more compelling package despite its lower raw score.

The Verdict

The data presents an unusual scenario where the older GPU wins the only direct head-to-head benchmark. The HD 8870M's 8462 OpenCL score eclipses the Radeon 540's 6184 by 36.8%, a substantial margin that places it in a different performance tier. This is reinforced by the HD 8870M's 43rd percentile ranking among all GPUs, compared to the Radeon 540's 41st percentile. However, the Radeon 540's average benchmark score of 7673—derived from both its OpenCL and Vulkan results—tells a more nuanced story. The Vulkan score of 9162 suggests that in modern graphics APIs, the Radeon 540 can outperform its OpenCL showing significantly. The HD 8870M sits within 0.1% of the NVIDIA GeForce MX330 (8458) and 0.3% of the AMD Radeon 880M (8436), placing it in a competitive mid-range bracket. The Radeon 540, meanwhile, trails the NVIDIA GeForce GTX 1660 Ti (7723) by just 0.6% and leads the AMD Radeon Pro WX 3100 (7580) by 1.2%. For OpenCL compute tasks, the HD 8870M is unequivocally the superior choice. For users running Vulkan applications or prioritizing efficiency, the Radeon 540's strengths become apparent.

Architecture Differences

The architectural gap between these two GPUs is substantial. The HD 8870M employs the Venus chip built on GCN 1.0 architecture, fabricated on a 28 nm process at TSMC. It packs 1,500 million transistors into a 123 mm² die, yielding a transistor density of 12.2 million per square millimeter. The Radeon 540, by contrast, uses the Lexa chip with GCN 4.0 architecture, manufactured on a 14 nm process at GlobalFoundries. This newer process packs 2,200 million transistors into a smaller 103 mm² die, achieving a significantly higher density of 21.4 million per square millimeter. The HD 8870M belongs to the Solar System generation (HD 8800M series), while the Radeon 540 comes from the Polaris generation (RX 500 series). Shader configurations differ markedly: the HD 8870M fields 640 shading units, 40 texture mapping units, and 16 ROPs, while the Radeon 540 operates with 384 shading units, 24 TMUs, and 16 ROPs. The HD 8870M's higher shader count (640 vs 384) directly explains its compute advantage, but the Radeon 540 counters with newer architecture efficiencies. The Radeon 540 supports DirectX 12 (12_0) and Vulkan 1.3, while the HD 8870M is limited to DirectX 12 (11_1) and Vulkan 1.2.170. Both support OpenGL 4.6, but the Radeon 540's newer API versions signal better compatibility with modern software.

Head-to-Head Benchmarks

The only direct benchmark comparison available is Geekbench OpenCL, where the HD 8870M scores 8462 against the Radeon 540's 6184. This 36.8% delta represents a commanding victory for the older GPU. To contextualize this margin, consider that the HD 8870M's nearest rivals include the NVIDIA GeForce MX330 at 8458 (0.1% behind) and the Intel Arc A380 at 8558 (1.1% ahead). The Radeon 540's OpenCL score places it closer to the AMD Radeon R7 250 (7557) and Intel Arc A310 (7550), which it leads by 1.5% and 1.6% respectively. However, the Radeon 540's Vulkan score of 9162—its only other benchmark—exceeds its OpenCL result by nearly 50%, suggesting that API choice dramatically affects its performance. The HD 8870M has no Vulkan benchmark data, leaving a gap in the comparison. The pixel rate data further illuminates the differences: the Radeon 540 achieves 18.93 GPixel/s versus the HD 8870M's 12.40 GPixel/s, indicating the newer GPU's superior rasterization throughput. Texture rates are closer, with the HD 8870M at 31.00 GTexel/s and the Radeon 540 at 28.39 GTexel/s. The FP32 compute figures show 992.0 GFLOPS for the HD 8870M versus 908.5 GFLOPS for the Radeon 540, a narrower gap than the OpenCL scores might suggest. Notably, the Radeon 540 supports FP16 at 908.5 GFLOPS with a 1:1 ratio, a capability the HD 8870M lacks entirely.

FAQ

Q: Which GPU has better OpenCL performance?

A: The AMD Radeon HD 8870M is decisively ahead, scoring 8462 in Geekbench OpenCL versus the AMD Radeon 540's 6184, a 36.8% advantage.

Q: Does the AMD Radeon 540 have any performance advantage?

A: Yes. In Geekbench Vulkan, the Radeon 540 scores 9162, which is substantially higher than its OpenCL score and represents its strongest benchmark result. It also achieves a higher pixel rate of 18.93 GPixel/s versus the HD 8870M's 12.40 GPixel/s.

Q: How do these GPUs compare in terms of power consumption?

A: The Radeon 540 has a TDP of 50 W and requires no power connectors, with a suggested PSU of 250 W. The HD 8870M's TDP is not listed in the data, and no power connector information is available for it.

Q: What are the memory specifications for each GPU?

A: The HD 8870M has 2 GB of GDDR5 memory on a 128-bit bus with 72.00 GB/s bandwidth. The Radeon 540 has 1024 MB of GDDR5 on a 32-bit bus with 24.00 GB/s bandwidth.

Q: Which GPU supports newer graphics APIs?

A: The Radeon 540 supports DirectX 12 (12_0), OpenGL 4.6, and Vulkan 1.3. The HD 8870M supports DirectX 12 (11_1), OpenGL 4.6, and Vulkan 1.2.170, making the Radeon 540 more modern in API support.

Q: How do their production timelines compare?

A: The HD 8870M was released on March 31, 2013, while the Radeon 540 came later on April 19, 2017. Both are now end-of-life products.

Where Each One Wins

The HD 8870M dominates in OpenCL compute workloads, as evidenced by its 36.8% lead in the Geekbench OpenCL benchmark. Its higher shader count (640 vs 384), larger memory bus (128-bit vs 32-bit), and greater bandwidth (72.00 GB/s vs 24.00 GB/s) make it the superior choice for compute-heavy tasks that leverage these resources. The 2 GB memory capacity also provides more headroom for larger datasets compared to the Radeon 540's 1 GB. In terms of texture throughput, the HD 8870M's 31.00 GTexel/s edges out the Radeon 540's 28.39 GTexel/s, and its FP32 output of 992.0 GFLOPS exceeds the newer GPU's 908.5 GFLOPS. The HD 8870M also holds a slight edge in average benchmark score (8462 vs 7673) and percentile ranking (43rd vs 41st).

The Radeon 540 wins in several critical areas despite its lower raw compute scores. Its Vulkan score of 9162 demonstrates strong performance in modern graphics APIs, and its support for Vulkan 1.3 (versus 1.2.170) ensures better compatibility with contemporary software. The Radeon 540's DirectX 12 (12_0) support surpasses the HD 8870M's DirectX 12 (11_1), enabling newer rendering features. Power efficiency is a clear win: the Radeon 540's 50 W TDP, lack of power connectors, and 250 W suggested PSU make it far easier to integrate into compact systems. Its single-slot form factor and dual DisplayPort 1.4a outputs offer modern connectivity. The Radeon 540 also achieves a higher pixel rate (18.93 GPixel/s vs 12.40 GPixel/s), indicating better fill-rate performance in rasterization-heavy workloads. The FP16 capability (908.5 GFLOPS) provides a potential advantage in applications that leverage half-precision math.

Specification Differences

| Specification | AMD Radeon HD 8870M | AMD Radeon 540 |

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

| Chip | Venus | Lexa |

| Architecture | GCN 1.0 | GCN 4.0 |

| Generation | Solar System (HD 8800M) | Polaris (RX 500) |

| Process Node | 28 nm | 14 nm |

| Foundry | TSMC | GlobalFoundries |

| Transistors | 1,500 million | 2,200 million |

| Die Size | 123 mm² | 103 mm² |

| Transistor Density | 12.2M / mm² | 21.4M / mm² |

| Memory Clock | 1125 MHz (4.5 Gbps effective) | 1500 MHz (6 Gbps effective) |

| Memory Size | 2 GB | 1024 MB |

| Memory Type | GDDR5 | GDDR5 |

| Memory Bus Width | 128 bit | 32 bit |

| Memory Bandwidth | 72.00 GB/s | 24.00 GB/s |

| Shading Units | 640 | 384 |

| TMUs | 40 | 24 |

| ROPs | 16 | 16 |

| Pixel Rate | 12.40 GPixel/s | 18.93 GPixel/s |

| Texture Rate | 31.00 GTexel/s | 28.39 GTexel/s |

| FP32 | 992.0 GFLOPS | 908.5 GFLOPS |

| FP16 | Not available | 908.5 GFLOPS (1:1) |

| TDP | Not listed | 50 W |

| Slot Width | Not listed | Single-slot |

| Power Connectors | Not listed | None |

| Suggested PSU | Not listed | 250 W |

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

| Display Outputs | Not listed | 2x DisplayPort 1.4a |

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

| OpenGL | 4.6 | 4.6 |

| Vulkan | 1.2.170 | 1.3 |

| Release Date | 2013-03-31 | 2017-04-19 |

| Predecessor | London | Arctic Islands |

| Successor | Gem System | Vega |

The specification table reveals a clear generational divide. The Radeon 540's 14 nm process enables higher transistor density and lower power consumption, while the HD 8870M leverages a wider memory bus and more shading units for raw compute throughput. The Radeon 540's narrower 32-bit bus and 24.00 GB/s bandwidth stand in stark contrast to the HD 8870M's 128-bit bus and 72.00 GB/s bandwidth, yet the newer GPU compensates with higher clocked memory (6 Gbps effective vs 4.5 Gbps). The Radeon 540's PCIe 3.0 x8 interface provides half the lanes of the HD 8870M's PCIe 3.0 x16, though this may have minimal impact on real-world performance at these performance tiers. The Radeon 540's display outputs (2x DisplayPort 1.4a) and single-slot design make it a more flexible option for modern system integration, while the HD 8870M's lack of listed display outputs suggests it was primarily designed for mobile implementations.