AMD Opteron 4280 vs AMD PRO A12-8870 Comparison

The AMD PRO A12-8870 and the AMD Opteron 4280 are an unusual pair to see tied together. The data places them at the exact same average benchmark score of 1107, and both sit at the 31st percentile of all CPUs. This is a statistical dead heat, yet the two chips achieve this parity through completely opposite design philosophies. The Opteron is a server part with double the core count, while the PRO A12 is a desktop APU with integrated graphics. The head-to-head benchmark results, however, tell a one-sided story that contradicts the overall score parity, revealing a distinct generational and architectural tug-of-war.

Head-to-Head Benchmarks

The most striking finding is that the AMD Opteron 4280 wins every single head-to-head benchmark in the data. Across all five Cinebench tests, the Opteron holds a consistent lead of roughly 15.8% to 15.9% over the PRO A12-8870. In the Cinebench R15 multicore test, the Opteron scores 385 against the PRO A12’s 324, a delta of -15.8%. This pattern repeats in Cinebench R20 multicore, where the Opteron’s 1607 outpaces the PRO A12’s 1351 by exactly 15.9%.

The single-core results are even more telling, as they show the Opteron’s advantage is not merely a function of having more cores. In Cinebench R20 single-core, the Opteron scores 226 while the PRO A12 manages just 190, again a 15.9% deficit. This is surprising given the PRO A12’s higher clock speeds. The PRO A12 has a base clock of 3.70 GHz and a boost clock of 4.20 GHz, whereas the Opteron runs at a lower 2.80 GHz base and 3.50 GHz boost. The data suggests that the Opteron’s older but larger core design delivers more instructions per clock in this specific workload, or that the PRO A12’s efficiency-focused Excavator architecture is not translating its clock advantage into raw Cinebench performance.

The Cinebench R23 results reinforce the trend. In the multicore test, the Opteron scores 3828 versus 3218 for the PRO A12, a -15.9% delta. In the single-core test, the Opteron’s 540 beats the PRO A12’s 454 by the same margin. That the delta is almost uniformly -15.9% across every generation of Cinebench suggests a fixed performance gap that is independent of the workload scaling. This is not a case where the PRO A12 closes the gap in newer tests; the relative disadvantage is frozen. The Opteron’s win count is 5 out of 5, leaving the PRO A12 with zero head-to-head victories.

Where Each One Wins

Based strictly on the benchmark data, the AMD Opteron 4280 is the winner in every measured category. There is no test in the provided data where the PRO A12-8870 comes out ahead. This includes both multicore and single-core workloads, meaning the Opteron is the superior choice for raw processing power in all Cinebench scenarios. The Opteron’s 8 cores and 8 threads give it a structural advantage in heavily threaded tasks, but its single-core win is the more impressive feat, as it demonstrates a per-thread efficiency that the PRO A12 cannot match despite its clock speed advantage.

The PRO A12-8870, however, does not lose on every front. Its key differentiator is the integrated Radeon R7 graphics, which the Opteron entirely lacks. While the data does not include graphics benchmarks, the presence of an iGPU means the PRO A12 can drive a display without a discrete graphics card. This is a functional win for basic desktop use, even if it does not appear in the Cinebench scores. Furthermore, the PRO A12’s 65 W TDP is significantly lower than the Opteron’s 95 W TDP, indicating a more power-efficient design for the same overall average performance. The PRO A12 also supports DDR4 memory with a bandwidth of 38.4 GB/s, compared to the Opteron’s older DDR3 at 25.6 GB/s, which could offer advantages in memory-sensitive tasks not captured by Cinebench.

Architecture Differences

The two chips represent divergent AMD design eras. The PRO A12-8870 is built on the Excavator architecture, codenamed Carrizo, and fabricated on a 28 nm process at GlobalFoundries. It uses 3,100 million transistors on a 250 mm² die. The Opteron 4280, conversely, is a Bulldozer design, codenamed Valencia, on a larger 32 nm process. It uses only 1,200 million transistors but on a larger 315 mm² die. This is a significant architectural split: Excavator is a refined, high-clock design, while Bulldozer was AMD’s modular approach with shared floating-point units.

The cache layouts highlight their personality. The PRO A12 has a small 320 KB L1 and 2 MB L2, with no L3 cache at all. The Opteron provides 384 KB L1, a much larger 8 MB L2, and adds an 8 MB shared L3 cache. This substantial cache hierarchy likely explains the Opteron’s consistent lead in single-core Cinebench tests, as it can hold more working data closer to the cores. The Opteron’s 8 cores are grouped in dual-core modules under Bulldozer, but the chip is presented to the OS as 8 discrete threads.

Platform support differs entirely. The PRO A12 uses the AMD Socket AM4 platform with PCIe Gen 3, while the Opteron uses the server-oriented AMD Socket C32 with PCIe Gen 2. The PRO A12 is an active production desktop part with a part number of AD887BAUM44AB, whereas the Opteron 4280 is an end-of-life server/workstation part, released on 2011-11-13, with part number OS4280WLU8KGU. The memory controllers are also generationally split: the PRO A12 supports DDR4, while the Opteron is limited to DDR3. The Opteron supports ECC memory, a critical feature for server reliability, which the PRO A12 does not.

The Verdict

The data is unambiguous: the AMD Opteron 4280 is the faster processor in every benchmark test recorded. If the choice is purely about compute performance in Cinebench, the Opteron is the clear pick, offering a ~15.9% advantage across the board. Its 8 cores and 8 threads, combined with a larger L2 and L3 cache, make it the superior engine for rendering and multi-threaded compilation. Even in single-threaded tasks, where the PRO A12’s clock speed should help, the Opteron’s architecture wins. The Opteron’s 95 W TDP is higher, but it delivers more performance per watt in these tests.

Who should pick the AMD PRO A12-8870? That choice rests on factors outside the Cinebench data. The PRO A12 is a modern desktop chip with integrated Radeon R7 graphics, making it a complete platform solution for a basic office PC or home theater setup where a discrete GPU is unnecessary. Its 65 W TDP is lower, and its DDR4 support offers a modern memory path. For a user building a simple, low-power system without a graphics card, the PRO A12 is the only viable option of the two, despite losing every compute benchmark. For anyone needing raw CPU grunt, server-level reliability with ECC memory, or who already has a discrete GPU, the Opteron 4280 is the definitive choice.

FAQ

Q: Which processor has a higher average benchmark score?

A: Both the AMD PRO A12-8870 and the AMD Opteron 4280 have an identical average benchmark score of 1107.

Q: Does the AMD PRO A12-8870 win any of the head-to-head Cinebench tests?

A: No. The AMD Opteron 4280 wins all 5 head-to-head Cinebench tests, with the PRO A12-8870 winning 0.

Q: What is the performance difference in the Cinebench R23 multicore test?

A: The AMD Opteron 4280 scores 3828, which is 15.9% higher than the AMD PRO A12-8870's score of 3218.

Q: Which processor includes integrated graphics?

A: The AMD PRO A12-8870 includes integrated Radeon R7 graphics. The AMD Opteron 4280 has no integrated graphics.

Q: What type of memory does each processor support?

A: The AMD PRO A12-8870 supports DDR4 memory, while the AMD Opteron 4280 supports the older DDR3 standard.

Q: Which processor has a higher core count and what is it?

A: The AMD Opteron 4280 has 8 cores and 8 threads. The AMD PRO A12-8870 has 4 cores and 4 threads.

Specification Differences

| Specification | AMD PRO A12-8870 | AMD Opteron 4280 |

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

| Cores | 4 | 8 |

| Threads | 4 | 8 |

| Base Clock | 3.70 GHz | 2.80 GHz |

| Boost Clock | 4.20 GHz | 3.50 GHz |

| TDP | 65 W | 95 W |

| Socket | AMD Socket AM4 | AMD Socket C32 |

| Architecture | Excavator | Bulldozer |

| Codename | Carrizo | Valencia |

| Process Node | 28 nm | 32 nm |

| Transistors | 3,100 million | 1,200 million |

| Die Size | 250 mm² | 315 mm² |

| L1 Cache | 320 KB | 384 KB |

| L2 Cache | 2 MB | 8 MB |

| L3 Cache | None | 8 MB (shared) |

| Memory Support | DDR4 | DDR3 |

| Memory Bandwidth | 38.4 GB/s | 25.6 GB/s |

| ECC Memory | False | True |

| PCIe | Gen 3 | Gen 2 |

| Integrated Graphics | Radeon R7 | None |

| Market Segment | Desktop | Server/Workstation |

| Production Status | Active | End-of-life |

| Release Date | Not provided | 2011-11-13 |

| Launch MSRP | Not provided | $255 |

| Part Number | AD887BAUM44AB | OS4280WLU8KGU |