AMD Opteron 6281 vs Intel Core i7-4870HQ Comparison

The AMD Opteron 6281 and Intel Core i7-4870HQ represent two very different answers to the same question: how to deliver compute performance in the early 2010s. One is a 16-core server behemoth built for throughput, the other a 4-core mobile chip designed for efficiency. The benchmark data shows a clear, consistent winner across every measured test, but the story is more complex than a simple scoreboard, as the architecture and market positioning reveal distinct strengths that matter depending on the workload.

Head-to-Head Benchmarks

The head-to-head results are unambiguous. The AMD Opteron 6281 wins all six benchmark comparisons, and it does so with remarkable consistency. Across the Cinebench R15, R20, and R23 suites, the Opteron’s margin over the Core i7-4870HQ hovers in a narrow band between 14.5% and 15.5%. In the R15 multicore test, the Opteron scores 623 against the Intel’s 540, a 15.4% advantage. That lead is nearly identical in R15 single-core, where the Opteron’s 87 points beat the Core i7’s 76 by 14.5%.

The pattern holds as the workloads scale. In Cinebench R20 multicore, the Opteron posts 2598 versus 2253, a 15.3% gap. The R20 single-core result shows 366 against 317, a 15.5% margin — the largest of any test. The R23 suite tells the same tale: 6187 to 5366 in multicore and 873 to 757 in single-core, both at 15.3%. This uniformity is striking. It suggests the performance difference is not workload-dependent but rather a fundamental characteristic of the two designs. The Opteron is not just faster in heavily threaded scenarios where its 16 cores should dominate; it also wins in single-threaded tests, where the Core i7’s higher 3.70 GHz boost clock might have been expected to give it an edge.

Looking at the broader benchmark averages, the Opteron’s average score is 1789, which places it at the 42nd percentile of all CPUs. The Core i7-4870HQ averages 1769, sitting just below at the 41st percentile. The difference in average scores is only 20 points, yet the head-to-head deltas are consistently around 15%. This is because the two chips are compared against different rival sets. The Opteron’s nearest rivals include the AMD Ryzen 3 3200GE (1787, 0.1% delta) and the Intel Xeon E5-4610 v3 (1777, 0.7% delta), indicating it is squarely in the mid-range of desktop and server parts. The Core i7’s nearest rivals are similarly close, with the AMD Ryzen 5 2400GE at 1766 (0.2% delta) and the Intel Xeon E5-2637 v3 at 1773 (-0.2% delta). Both chips are essentially equivalent in overall average performance, yet in direct comparison, the Opteron’s architecture wins every time.

Where Each One Wins

Based strictly on the benchmark results, the AMD Opteron 6281 wins everywhere. There is no test in the data where the Intel Core i7-4870HQ takes the lead. This includes both multi-core and single-core workloads, which is a notable outcome. For multi-threaded rendering or compute tasks, the Opteron’s 16 cores and 16 threads provide a clear advantage, as seen in the R15, R20, and R23 multicore scores. The consistency of the 15% margin in these tests suggests that the Opteron’s core count translates directly into proportional performance gains.

The single-core results are more surprising. The Core i7-4870HQ has a higher boost clock (3.70 GHz versus 3.20 GHz) and is built on a newer 22 nm process compared to the Opteron’s 32 nm node. Yet the Opteron still wins single-core tests by 14.5% to 15.5%. This indicates that the Opteron’s single-core performance, while not class-leading, is sufficiently strong that its lower clock speed does not become a disadvantage. The data implies that for any workload that can be parallelized, the Opteron is the superior choice. For workloads that are strictly single-threaded, the Opteron still wins, which leaves the Intel chip without a clear use case based on performance alone.

The Intel Core i7-4870HQ’s strengths lie outside the Cinebench and Geekbench results. It has integrated graphics (Intel HD 5200), which the Opteron lacks entirely. It also has a much lower TDP of 47 watts versus 130 watts, making it suitable for mobile or power-constrained environments. However, the benchmark data does not capture these attributes. Within the measured performance metrics, the Opteron is the winner across the board.

Architecture Differences

The architectural chasm between these two chips is vast. The AMD Opteron 6281 is built on the Bulldozer architecture, codenamed Interlagos, and is part of the Opteron 6000 series. It uses a 32 nm process at GlobalFoundries and packs 2,400 million transistors across a dual-die design with a combined die size of 2x 315 mm². It features 16 cores and 16 threads, with a base clock of 2.50 GHz and a boost clock of 3.20 GHz. The cache hierarchy is module-based: 768 KB of L1, 2 MB of L2 per module, and 8 MB of L3 per die. Memory support is DDR3 over a quad-channel bus, yielding 51.2 GB/s of bandwidth, and it supports ECC memory. It uses PCIe Gen 2 and is designed for the AMD Socket G34. This is a server/workstation part, released in April 2012 with a launch MSRP of $988.

The Intel Core i7-4870HQ is a completely different beast. It is built on the Haswell architecture, codenamed Crystalwell, and is a mobile part on the Intel BGA 1364 socket. It uses a 22 nm process at Intel, with 1,400 million transistors on a 264 mm² die. It has 4 cores and 8 threads, with the same 2.50 GHz base clock as the Opteron but a higher 3.70 GHz boost clock. Its cache is per-core: 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3. Memory support is dual-channel DDR3 with 25.6 GB/s of bandwidth, and it does not support ECC memory. It uses PCIe Gen 3 with 16 lanes and includes integrated Intel HD 5200 graphics. It was released in June 2014 and is end-of-life.

The core count difference (16 versus 4) is the most obvious divergence, but the transistor counts and die sizes tell a deeper story. The Opteron uses 71% more transistors (2,400 million versus 1,400 million) across a much larger physical footprint. Yet the Intel chip, with fewer transistors and a smaller die, still manages to compete within 15% in raw performance. This points to the efficiency of the Haswell architecture versus Bulldozer. The Intel chip also has a significantly lower TDP (47W versus 130W), which is a direct consequence of the newer process node and more efficient design. The Opteron’s higher memory bandwidth (51.2 GB/s versus 25.6 GB/s) is a clear advantage for memory-intensive server workloads, while the Core i7’s integrated graphics and PCIe Gen 3 support make it a more versatile mobile platform.

FAQ

Q: Which CPU has more cores and threads?

A: The AMD Opteron 6281 has 16 cores and 16 threads. The Intel Core i7-4870HQ has 4 cores and 8 threads. The Opteron offers four times the core count and double the thread count.

Q: How do their single-core benchmark scores compare?

A: In Cinebench R23 single-core, the AMD Opteron 6281 scores 873, while the Intel Core i7-4870HQ scores 757. The Opteron leads by 15.3% in this test, and similarly leads by 14.5% in R15 single-core (87 versus 76) and 15.5% in R20 single-core (366 versus 317).

Q: What is the difference in memory bandwidth?

A: The AMD Opteron 6281 supports quad-channel DDR3 memory with a bandwidth of 51.2 GB/s. The Intel Core i7-4870HQ supports dual-channel DDR3 with a bandwidth of 25.6 GB/s. The Opteron provides exactly twice the memory bandwidth.

Q: Does the Intel Core i7-4870HQ have integrated graphics?

A: Yes, it includes Intel HD 5200 integrated graphics. The AMD Opteron 6281 has no integrated graphics, as it is designed for server/workstation use where a discrete GPU is expected.

Q: What are their production statuses?

A: Both CPUs are end-of-life. The AMD Opteron 6281 was released in April 2012, and the Intel Core i7-4870HQ was released in June 2014.

Q: How do their average benchmark scores compare?

A: The AMD Opteron 6281 has an average benchmark score of 1789, placing it at the 42nd percentile of all CPUs. The Intel Core i7-4870HQ has an average score of 1769, at the 41st percentile. The difference is only 20 points.

The Verdict

The data is clear: the AMD Opteron 6281 outperforms the Intel Core i7-4870HQ in every single benchmark test recorded. Whether the workload is single-threaded or multi-threaded, the Opteron wins by a consistent margin of roughly 15%. For anyone choosing between these two strictly on raw compute performance, the Opteron is the definitive choice. Its 16 cores provide substantial multi-threaded muscle, and its single-core performance is unexpectedly strong given its lower boost clock.

The Intel Core i7-4870HQ, however, is not without merit. Its 47-watt TDP makes it far more power-efficient than the Opteron’s 130-watt TDP, and its integrated graphics and PCIe Gen 3 support make it a more complete mobile package. The data shows it is competitive in average score (1769 versus 1789), and its nearest rivals are nearly identical in performance. The choice comes down to context: if the workload is compute-heavy and power is not a concern, the Opteron wins outright. If the system must be mobile, power-conscious, or require integrated graphics, the Core i7 is the only option that fits, despite its lower benchmark scores.

Specification Differences

• Cores: AMD Opteron 6281 has 16 cores; Intel Core i7-4870HQ has 4 cores.
• Threads: AMD Opteron 6281 has 16 threads; Intel Core i7-4870HQ has 8 threads.
• Boost Clock: AMD Opteron 6281 boosts to 3.20 GHz; Intel Core i7-4870HQ boosts to 3.70 GHz.
• TDP: AMD Opteron 6281 is 130W; Intel Core i7-4870HQ is 47W.
• Socket: AMD Opteron 6281 uses AMD Socket G34; Intel Core i7-4870HQ uses Intel BGA 1364.
• Architecture: AMD Opteron 6281 is Bulldozer (Interlagos); Intel Core i7-4870HQ is Haswell (Crystalwell).
• Process Node: AMD Opteron 6281 is 32 nm; Intel Core i7-4870HQ is 22 nm.
• Foundry: AMD Opteron 6281 uses GlobalFoundries; Intel Core i7-4870HQ uses Intel.
• Transistors: AMD Opteron 6281 has 2,400 million; Intel Core i7-4870HQ has 1,400 million.
• Die Size: AMD Opteron 6281 is 2x 315 mm²; Intel Core i7-4870HQ is 264 mm².
• L1 Cache: AMD Opteron 6281 has 768 KB; Intel Core i7-4870HQ has 64 KB per core.
• L2 Cache: AMD Opteron 6281 has 2 MB per module; Intel Core i7-4870HQ has 256 KB per core.
• L3 Cache: AMD Opteron 6281 has 8 MB per die; Intel Core i7-4870HQ has 6 MB shared.
• Memory Bus: AMD Opteron 6281 is quad-channel; Intel Core i7-4870HQ is dual-channel.
• Memory Bandwidth: AMD Opteron 6281 is 51.2 GB/s; Intel Core i7-4870HQ is 25.6 GB/s.
• ECC Memory: AMD Opteron 6281 supports ECC; Intel Core i7-4870HQ does not.
• PCIe Version: AMD Opteron 6281 is Gen 2; Intel Core i7-4870HQ is Gen 3, 16 Lanes (CPU only).
• Integrated Graphics: AMD Opteron 6281 has none; Intel Core i7-4870HQ has Intel HD 5200.
• Market Segment: AMD Opteron 6281 is Server/Workstation; Intel Core i7-4870HQ is Mobile.