AMD Opteron 6220 vs Intel Core i7-2960XM Comparison

The Intel Core i7-2960XM and AMD Opteron 6220 are both 32nm parts from 2011, but they target completely different worlds: one is an unlocked mobile flagship, the other a server/workstation workhorse. Benchmark data shows they land within 0.1% of each other in average score, making this a fascinating clash of design philosophies rather than a one-sided rout.

FAQ

Q: Which processor has more physical cores?

A: The AMD Opteron 6220 has 8 cores, while the Intel Core i7-2960XM has 4 cores. However, the Intel part supports Hyper-Threading, giving it 8 threads, matching the Opteron's 8 threads.

Q: How do their average benchmark scores compare?

A: The i7-2960XM averages 1169, while the Opteron 6220 averages 1168. The delta between them is just 0.1%, with the Intel chip technically ahead in its own listing, though the Opteron's rival list shows the same 0.1% gap in its favor.

Q: Which chip supports ECC memory?

A: Only the AMD Opteron 6220 supports ECC memory. The Intel Core i7-2960XM has no ECC support, reflecting its mobile consumer orientation versus the Opteron's server-grade reliability focus.

Q: What is the memory bandwidth difference?

A: The Opteron 6220 offers 51.2 GB/s via quad-channel DDR3, exactly double the i7-2960XM's 25.6 GB/s from dual-channel memory. This is a major architectural advantage for the server part.

Q: Which processor has a higher boost clock?

A: The Intel Core i7-2960XM boosts to 3.70 GHz, while the AMD Opteron 6220 tops out at 3.60 GHz. The Intel chip also has a lower base clock at 2.70 GHz versus 3.00 GHz.

Q: Are both processors still in production?

A: No, both are end-of-life products. The i7-2960XM was released in September 2011, and the Opteron 6220 followed in November 2011.

Architecture Differences

The i7-2960XM is built on Intel's Sandy Bridge architecture, a monolithic 32nm design with 1,160 million transistors on a 216 mm² die. It uses a traditional 4-core, 8-thread layout with 64 KB L1 and 256 KB L2 per core, plus 8 MB of shared L3 cache. The chip features an unlocked multiplier, integrated Intel HD 3000 graphics, and PCIe Gen 2 with 16 CPU lanes. Its memory controller is dual-channel DDR3, and it lacks ECC support entirely.

The Opteron 6220, codenamed Interlagos, is a Bulldozer-based server part fabricated by GlobalFoundries on the same 32nm node. It packs 8 cores with 8 threads, arranged in modules with 2 MB L2 per module and 8 MB L3 per die. The physical package is dual-die, with 2,400 million transistors across two 315 mm² dies — more than double the transistor count of the Intel chip. It supports quad-channel DDR3 with ECC, uses PCIe Gen 2, and has no integrated graphics. The multiplier is locked, and the TDP is 115W versus the i7's 55W.

These are fundamentally different approaches: Intel packs high per-core efficiency into a mobile socket, while AMD scales out with more cores and massive memory throughput for server workloads. The i7's integrated GPU and lower TDP make it suitable for laptops; the Opteron's ECC and quad-channel memory target datacenter reliability and bandwidth.

Head-to-Head Benchmarks

The AMD Opteron 6220 wins all six head-to-head benchmark comparisons, but the margins are remarkably thin. In Cinebench R15 multi-core, the Opteron scores 407 against the i7's 401, a 1.5% advantage. Single-core R15 shows 57 versus 56, a 1.8% lead for AMD. These are the largest deltas in the entire comparison.

Moving to Cinebench R20, the Opteron extends its lead slightly: 1696 versus 1674 in multi-core (1.3%), and 239 versus 236 in single-core (also 1.3%). The pattern continues in Cinebench R23, where the Opteron posts 4040 versus 3988 in multi-core and 570 versus 563 in single-core, both at 1.3% and 1.2% deltas respectively.

The consistency is striking. Across every workload, the Opteron holds a 1.2-1.8% edge, regardless of whether the test is single-threaded or multi-threaded. This suggests the higher base clock of 3.00 GHz versus 2.70 GHz provides a steady advantage that the i7's higher boost clock (3.70 GHz) cannot fully overcome in these sustained workloads. The i7's extra threads from Hyper-Threading help it stay close, but the Opteron's native 8 cores with higher base frequency win out.

Neither chip dominates decisively; the data shows a near-tie in practical terms. The average benchmark scores of 1169 and 1168 place them in the same percentile bracket (33rd) against all CPUs, with the i5-3570S (1169) and i5-3450 (1166) flanking them as direct rivals.

The Verdict

The data paints a clear picture: the AMD Opteron 6220 is the slightly faster processor across the board, winning every benchmark by 1.2-1.8%. If raw performance is the only criterion, the Opteron is the pick. Its 8 cores, higher base clock, and quad-channel memory give it a consistent edge in both Cinebench R15, R20, and R23 workloads.

However, the i7-2960XM is not far behind. A 1.3% average deficit is negligible in real-world use, and the Intel chip offers features the Opteron cannot match: an unlocked multiplier for overclocking, integrated HD 3000 graphics, a 55W TDP (less than half the Opteron's 115W), and a mobile socket design. For a laptop user who needs CPU power with graphics and power efficiency, the i7 is the sensible choice.

The Opteron targets a different buyer entirely: server and workstation users who need ECC memory, quad-channel bandwidth (51.2 GB/s versus 25.6 GB/s), and massive multi-core throughput. Its 8 cores and 2,400 million transistors are built for sustained, memory-intensive workloads, not for battery-powered mobility.

Benchmark results indicate both chips occupy the same performance tier — the average scores differ by just 1 point. The decision comes down to platform: the i7-2960XM for mobile flexibility with overclocking and integrated graphics, the Opteron 6220 for server-grade stability with ECC and double the memory bandwidth. The Opteron wins on speed; the i7 wins on versatility. Choose accordingly.

Specification Differences

| Specification | Intel Core i7-2960XM | AMD Opteron 6220 |

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

| Cores | 4 | 8 |

| Threads | 8 | 8 |

| Base Clock | 2.70 GHz | 3.00 GHz |

| Boost Clock | 3.70 GHz | 3.60 GHz |

| TDP | 55W | 115W |

| Socket | Intel Socket G2 (988B) | AMD Socket G34 |

| Process Node | 32 nm | 32 nm |

| Transistors | 1,160 million | 2,400 million |

| Die Size | 216 mm² | 2x 315 mm² |

| L1 Cache | 64 KB (per core) | 768 KB |

| L2 Cache | 256 KB (per core) | 2 MB (per module) |

| L3 Cache | 8 MB (shared) | 8 MB (per die) |

| Memory Bus | Dual-channel | Quad-channel |

| Memory Bandwidth | 25.6 GB/s | 51.2 GB/s |

| ECC Memory | No | Yes |

| Integrated Graphics | Intel HD 3000 | None |

| Market Segment | Mobile | Server/Workstation |

| Multiplier Unlocked | Yes | No |

| Launch MSRP | $1096 | $523 |

| Part Number | SR02FQ1NA | OS6220WKT8GGU |