AMD Opteron 4280 vs AMD PRO A12-9800 Comparison

The AMD Opteron 4280 and AMD PRO A12-9800 sit at nearly the same average benchmark score, with the Opteron at 1107 and the PRO A12 at 1104, placing both in the 31st percentile of all CPUs. Despite this near-parity in overall average, the head-to-head benchmark data tells a story of consistent, decisive victory for the older server chip across every single test. The Opteron 4280 wins all five recorded comparisons, with margins ranging from 18.9% to 19.3%, making the PRO A12-9800 the clear underdog in raw compute performance despite its newer architecture and higher clock speeds.

Head-to-Head Benchmarks

The most striking pattern in the head-to-head results is the uniformity of the Opteron 4280's advantage. In Cinebench R15 multi-core, the Opteron scores 385 against the PRO A12's 323, a delta of 19.2%. This is not a marginal lead; it is a substantial gap that carries through every workload. The multi-core tests consistently favor the Opteron by nearly the same margin, with Cinebench R20 multi-core showing 1607 versus 1347 (19.3% delta) and Cinebench R23 multi-core showing 3828 versus 3208 (19.3% delta). The consistency of these numbers suggests a fundamental throughput advantage rather than a workload-specific quirk.

Single-core performance tells the same story, which is more surprising given the PRO A12's clock speed advantage. The PRO A12-9800 has a base clock of 3.80 GHz and a boost of 4.20 GHz, while the Opteron 4280 operates at 2.80 GHz base and 3.50 GHz boost. Yet the Opteron still wins Cinebench R20 single-core with 226 points versus 190 (18.9% delta) and Cinebench R23 single-core with 540 versus 453 (19.2% delta). The data indicates that the Opteron's architecture delivers more instructions per clock in these tests, overcoming the PRO A12's raw frequency advantage.

The only benchmark where the PRO A12-9800 avoids a double-digit loss is Cinebench R15 single-core, but that test was not included in the head-to-head table. The available data shows the Opteron winning all five listed comparisons, with zero wins for the PRO A12. When examining the nearest rivals for each chip, the Opteron 4280 is exactly matched with the AMD PRO A12-8870 at an average score of 1107, and it trades blows with the Intel Core i5-4570T at 1108 (a -0.1% delta). The PRO A12-9800 sits near the Intel Xeon E5-2603 v3 at 1103 and the Intel Pentium Gold G6605 at 1103, both with 0.1% deltas, indicating these are all closely clustered performers.

Where Each One Wins

Looking strictly at the benchmark data, the AMD Opteron 4280 wins in every measurable category. It is ahead in multi-core rendering, single-core rendering, and overall average score. The 8 cores and 8 threads of the Opteron, combined with its 8 MB L2 cache and 8 MB shared L3 cache, clearly outmuscle the PRO A12's 4 cores and 4 threads with only 2 MB L2 cache and no L3. For any workload that scales with core count or cache capacity, the Opteron is the stronger choice based on the numbers.

The PRO A12-9800, however, has a different set of advantages that are not captured in the Cinebench scores. It supports DDR4 memory with a bandwidth of 38.4 GB/s, compared to the Opteron's DDR3 at 25.6 GB/s. It also includes integrated Radeon R7 graphics, which the Opteron lacks entirely. For systems that need a graphics output without a discrete GPU, the PRO A12 is the only viable option between the two. The PRO A12 also has a lower TDP of 65 watts versus the Opteron's 95 watts, which can be relevant for thermal management in compact desktop builds.

The Opteron's wins are all in CPU compute benchmarks, where its higher core count and larger cache provide a consistent edge. There are no benchmark categories in the data where the PRO A12 comes out ahead. Even the single-core tests, which typically favor newer architectures with higher clocks, go to the Opteron. This suggests that for pure processing tasks, the Opteron 4280 is the superior part, while the PRO A12's strengths lie in platform features like memory speed, integrated graphics, and power efficiency.

The Verdict

The data points to a clear conclusion: the AMD Opteron 4280 is the better processor for compute-heavy workloads. With a 19.2% to 19.3% lead in multi-core tests and an 18.9% to 19.2% lead in single-core tests, it outperforms the PRO A12-9800 across the board. The Opteron's average benchmark score of 1107 is also marginally higher than the PRO A12's 1104, reinforcing its status as the stronger chip. Anyone prioritizing raw CPU performance in rendering or similar multi-threaded tasks should choose the Opteron 4280 based on this data.

The PRO A12-9800 is the better pick for a different use case entirely. Its integrated Radeon R7 graphics mean it can power a display without a separate graphics card, something the Opteron cannot do. Its DDR4 memory support with 38.4 GB/s bandwidth offers a more modern memory subsystem, and its 65-watt TDP makes it easier to cool in smaller form factors. For a desktop system where graphical output and energy efficiency matter more than Cinebench scores, the PRO A12 is the logical choice. That said, the benchmark results are unambiguous: in every compute test, the Opteron wins.

FAQ

Q: Which processor has a higher single-core benchmark score?

A: The AMD Opteron 4280 wins all single-core tests. It scores 226 in Cinebench R20 single-core versus 190 for the PRO A12-9800, and 540 in Cinebench R23 single-core versus 453, with deltas of 18.9% and 19.2% respectively.

Q: Do both processors support ECC memory?

A: No. The AMD Opteron 4280 supports ECC memory, while the AMD PRO A12-9800 does not.

Q: What is the difference in multi-core performance between the two?

A: The Opteron 4280 leads by 19.2% in Cinebench R15 multi-core (385 vs 323) and by 19.3% in both Cinebench R20 multi-core (1607 vs 1347) and Cinebench R23 multi-core (3828 vs 3208).

Q: Which processor has integrated graphics?

A: The AMD PRO A12-9800 includes integrated Radeon R7 graphics. The AMD Opteron 4280 has no integrated graphics.

Q: How do the two compare in average benchmark score?

A: The Opteron 4280 has an average benchmark score of 1107, while the PRO A12-9800 has an average of 1104. Both sit in the 31st percentile of all CPUs.

Q: What memory types do they support?

A: The Opteron 4280 supports DDR3 memory with dual-channel bandwidth of 25.6 GB/s. The PRO A12-9800 supports DDR4 with dual-channel bandwidth of 38.4 GB/s.

Architecture Differences

The two processors come from different architectural lineages. The AMD Opteron 4280 uses the Bulldozer architecture with the codename Valencia, built on a 32 nm process node at GlobalFoundries. It is part of the Opteron 4000 series, targeting the server and workstation market segment. The chip contains 1,200 million transistors on a 315 mm² die. Its cache hierarchy includes 384 KB of L1, 8 MB of L2, and 8 MB of shared L3 cache. The Opteron supports PCIe Gen 2 and uses the AMD Socket C32.

The AMD PRO A12-9800 uses the Excavator architecture with the codename Bristol Ridge, built on a 28 nm process node, also at GlobalFoundries. It is a desktop part with a larger transistor count of 3,100 million despite a smaller die size of 250 mm². Its cache is limited to 320 KB of L1 and 2 MB of L2, with no L3 cache at all. The PRO A12 supports PCIe Gen 3 with 8 lanes on the CPU, uses the AMD Socket AM4, and integrates Radeon R7 graphics. It supports ECC memory, while the PRO A12 does not.

The Opteron's Bulldozer design emphasizes multi-threaded throughput with its 8 cores, while the Excavator architecture in the PRO A12 focuses on efficiency and integrated functionality. The Opteron's larger cache and higher core count are the primary drivers of its benchmark advantage. The PRO A12 compensates with a more modern process node, higher clock speeds, and a newer memory standard. The Opteron is marked as end-of-life, while the PRO A12 is listed as active in production.

Specification Differences

The two processors differ significantly in core configuration and clock speeds. The Opteron 4280 has 8 cores and 8 threads, with a base clock of 2.80 GHz and a boost clock of 3.50 GHz. The PRO A12-9800 has 4 cores and 4 threads, with a much higher base clock of 3.80 GHz and a boost of 4.20 GHz. Despite the PRO A12's clock advantage, the Opteron's core count wins in benchmarks.

Power and platform specifications also diverge. The Opteron has a TDP of 95 watts, while the PRO A12 draws only 65 watts. The Opteron uses DDR3 memory with dual-channel bandwidth of 25.6 GB/s and supports ECC. The PRO A12 uses DDR4 with dual-channel bandwidth of 38.4 GB/s and does not support ECC. The Opteron uses PCIe Gen 2, while the PRO A12 uses PCIe Gen 3 with 8 CPU lanes. The Opteron has no integrated graphics, while the PRO A12 includes Radeon R7. The Opteron's launch MSRP was $255, while the PRO A12 has no listed launch MSRP. The Opteron's part number is OS4280WLU8KGU, and the PRO A12's is AD980BAUM44AB.