AMD Opteron 6380 vs Intel Core i5-5675R Comparison

The Intel Core i5-5675R and the AMD Opteron 6380 represent two fundamentally different approaches to processor design, separated by nearly three years of silicon evolution. The data shows a clean sweep for the Opteron across every shared benchmark, but the context of those results is crucial: the Opteron is a 16-core server processor, while the i5 is a 4-core desktop chip. The Opteron’s victory is consistent, with a -16.8% delta in Cinebench R15 multi-core (572 vs 476) and a -16.7% delta in both R20 and R23 multi-core tests (2386 vs 1987, and 5683 vs 4733, respectively). Even in single-core tests, where Intel’s architecture traditionally excels, the Opteron leads by -16.2% in R15 (80 vs 67) and -16.7% in both R20 and R23 (336 vs 280, and 802 vs 668). This is not a marginal difference; it is a consistent, roughly 16% performance gap in favor of the AMD part across every test both processors share.

Head-to-Head Benchmarks

The head-to-head data is unambiguous: the AMD Opteron 6380 wins all six benchmarks listed, with the Intel Core i5-5675R finishing behind in every instance. The largest single-core margin appears in Cinebench R15, where the Opteron scores 80 against the i5’s 67, a -16.2% delta. The multi-core results tell a similar story, with the Opteron’s 572 in R15 multi-core outpacing the i5’s 476 by -16.8%. The pattern holds in newer tests: Cinebench R20 multi-core shows the Opteron at 2386 versus the i5’s 1987 (-16.7%), and R23 multi-core repeats the -16.7% delta with scores of 5683 and 4733. The single-core R20 and R23 tests also mirror this, with the Opteron scoring 336 and 802 against the i5’s 280 and 668, respectively, both at -16.7%. The consistency of the delta is notable; it suggests a systematic advantage in the Opteron’s execution, not a benchmark-specific quirk. The i5 does not win a single shared test, and its average benchmark score of 1648 is only marginally higher than the Opteron’s 1643, a 0.3% difference that places the two as near-rivals in aggregate performance. The Opteron’s wins are not narrow either; they are uniform and decisive across all Cinebench versions tested.

Architecture Differences

The two processors are built on radically different foundations. The Intel i5-5675R uses a 14 nm Broadwell architecture, manufactured by Intel, with a die size of 182 mm². The AMD Opteron 6380, by contrast, is a 32 nm Piledriver part from GlobalFoundries, featuring a dual-die design with a combined size of 2x 315 mm² and 2,400 million transistors. The core counts differ dramatically: the i5 has 4 cores and 4 threads, while the Opteron offers 16 cores and 16 threads. Cache hierarchies are also distinct. The i5 features 64 KB of L1 per core and 256 KB of L2 per core, with 4 MB of shared L3. The Opteron lists 768 KB of L1 total, 2 MB of L2 per module, and 8 MB of L3 per die. Memory support is DDR3 for both, but the Opteron uses a quad-channel bus with 59.7 GB/s bandwidth, while the i5 uses dual-channel with 29.9 GB/s. The Opteron also supports ECC memory, a feature absent on the i5. PCIe generations differ as well, with the i5 offering Gen 3 with 16 lanes (CPU only) versus the Opteron’s Gen 2. The i5 includes integrated Iris Pro Graphics 6200, while the Opteron has no integrated graphics. The Opteron is a server/workstation part with a 115 W TDP, while the i5 is a desktop part with a 65 W TDP. The Opteron’s release date is 2012-11-04, and its production status is end-of-life; the i5 launched on 2015-05-14 and remains active.

The Verdict

From the data alone, the AMD Opteron 6380 is the superior performer in every benchmark where both processors appear. It leads by roughly 16% in both single-core and multi-core Cinebench R15, R20, and R23 tests. The Opteron achieves this with 16 cores and 16 threads, a quad-channel memory bus, and ECC support, all characteristics suited to server workloads. The Intel i5-5675R, with its 4 cores and 4 threads, dual-channel memory, and no ECC, is a desktop-oriented part that cannot match the Opteron’s raw throughput. For users prioritizing multi-threaded rendering or server-style tasks, the Opteron is the clear choice. However, the i5 has its own advantages: a smaller 14 nm process, a lower 65 W TDP, an active production status, and integrated graphics. The i5 also carries a lower launch MSRP of $265 versus the Opteron’s $1088. The i5’s average benchmark score of 1648 is essentially tied with the Opteron’s 1643, with both sitting at the 40th percentile of all CPUs. This aggregate parity, despite the Opteron’s head-to-head sweep, suggests the i5’s efficiency and architectural modernity offset some of the core-count deficit in mixed workloads. For a desktop user who values lower power consumption and integrated graphics, the i5 is viable; for raw compute in a server context, the Opteron’s benchmark dominance is decisive. The data does not support a single universal winner—it depends on the workload.

Specification Differences

| Specification | Intel Core i5-5675R | AMD Opteron 6380 |

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

| Cores | 4 | 16 |

| Threads | 4 | 16 |

| Base Clock | 3.10 GHz | 2.50 GHz |

| Boost Clock | 3.60 GHz | 3.40 GHz |

| TDP | 65 W | 115 W |

| Socket | Intel BGA 1364 | AMD Socket G34 |

| Architecture | Broadwell | Piledriver |

| Codename | Broadwell | Abu Dhabi |

| Process Node | 14 nm | 32 nm |

| Foundry | Intel | GlobalFoundries |

| Die Size | 182 mm² | 2x 315 mm² |

| Transistors | N/A | 2,400 million |

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

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

| L3 Cache | 4 MB (shared) | 8 MB (per die) |

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

| Memory Bandwidth | 29.9 GB/s | 59.7 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 16 Lanes (CPU only) | Gen 2 |

| Integrated Graphics | Iris Pro Graphics 6200 | None |

| Market Segment | Desktop | Server/Workstation |

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

| Release Date | 2015-05-14 | 2012-11-04 |

| Launch MSRP | $265 | $1088 |

| Part Number | SR2AJ | OS6380WKTGGHK |

FAQ

Q: Which processor has more cores?

A: The AMD Opteron 6380 has 16 cores and 16 threads, while the Intel Core i5-5675R has 4 cores and 4 threads.

Q: Does the Intel i5-5675R win any benchmark against the Opteron?

A: No. In the six head-to-head benchmarks listed (Cinebench R15, R20, and R23, both single-core and multi-core), the Opteron wins all six, with deltas ranging from -16.2% to -16.8% in favor of the Opteron.

Q: What is the average benchmark score difference between the two?

A: The i5-5675R has an average benchmark score of 1648, while the Opteron 6380 scores 1643. The delta is 0.3% in favor of the i5, making them near-identical in aggregate performance.

Q: Which processor supports ECC memory?

A: The AMD Opteron 6380 supports ECC memory, while the Intel Core i5-5675R does not.

Q: What are the memory bandwidth specifications?

A: The Opteron 6380 has a quad-channel memory bus with 59.7 GB/s bandwidth. The i5-5675R has a dual-channel bus with 29.9 GB/s bandwidth.

Q: Which processor has integrated graphics?

A: The Intel Core i5-5675R includes Iris Pro Graphics 6200. The AMD Opteron 6380 has no integrated graphics.

Q: What are the production statuses of these CPUs?

A: The Intel i5-5675R is listed as Active, while the AMD Opteron 6380 is End-of-life. The Opteron released on 2012-11-04, and the i5 released on 2015-05-14.