AMD Opteron 6328 vs Intel Core i5-4670R Comparison

The AMD Opteron 6328 and Intel Core i5-4670R represent two very different approaches to computing, one a server-focused eight-core part built for throughput and the other a desktop-focused quad-core chip designed for efficiency. Benchmark results show a remarkably consistent, though narrow, advantage for the AMD processor across all tested Cinebench workloads, with the Opteron winning all six head-to-head comparisons by margins between 1.3% and 1.6%. This places the two CPUs in the same performance tier — both sit at the 35th percentile of all CPUs — yet their underlying architectures and intended use cases could not be more distinct.

Where Each One Wins

The data paints a clear picture: the AMD Opteron 6328 wins every benchmark in this comparison, but the victories are narrow enough that the real story is about context rather than dominance. The Opteron’s largest margin comes in the Cinebench R15 single-core test, where it scores 64 against the i5-4670R’s 63, a 1.6% lead. In multi-core workloads, the Opteron’s edge is consistently around 1.3% to 1.4%, such as its 454 versus 448 in R15 multi-core and 1894 versus 1868 in R20 multi-core. These are not the kind of margins that will be noticeable in everyday use, but they are uniform across every single test, suggesting a fundamental, if small, performance advantage.

Where the i5-4670R would win in a practical sense is in power efficiency and platform flexibility. The Intel chip draws 65W TDP compared to the Opteron’s 115W, and it includes integrated graphics (Intel Iris? Pro 5200) while the AMD part has none. The i5-4670R is also listed as an active product with an unlocked multiplier, whereas the Opteron is end-of-life and locked. For a desktop user building a compact system, the i5-4670R’s lower power draw and built-in graphics make it the more sensible choice despite losing every compute benchmark. The Opteron, by contrast, is a server/workstation part with quad-channel DDR3 memory support and ECC memory, features that point to a different workload entirely — one where reliability and memory bandwidth matter more than single-thread speed.

FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Opteron 6328 has an average benchmark score of 1304, while the Intel Core i5-4670R scores 1286. The Opteron’s nearest rival, the Intel Core i5-6400, scores 1307, showing how close these two CPUs are to their competitive set.

Q: How large is the performance gap between the two in multi-core tests?

A: The Opteron leads in all three multi-core tests by nearly identical margins: 1.3% in Cinebench R15 (454 vs 448), 1.4% in R20 (1894 vs 1868), and 1.4% in R23 (4510 vs 4448). These are small but consistent advantages.

Q: Does the Intel Core i5-4670R win any benchmark in this comparison?

A: No. The head-to-head data shows the AMD Opteron 6328 winning all six benchmarks — three multi-core and three single-core tests — with zero wins for the Intel part.

Q: What are the memory capabilities of each processor?

A: The AMD Opteron 6328 supports quad-channel DDR3 with a memory bandwidth of 59.7 GB/s and includes ECC memory support. The Intel Core i5-4670R supports DDR3 but has no listed memory bus width, bandwidth figure, or ECC capability.

Q: Which processor includes integrated graphics?

A: The Intel Core i5-4670R features Intel Iris? Pro 5200 integrated graphics. The AMD Opteron 6328 has no integrated graphics at all, which is typical for a server-class processor.

Q: How do these CPUs compare to their nearest rivals?

A: The Opteron 6328 is essentially tied with the Intel Core i5-6400 (deltaPct -0.2%) and sits slightly above the Intel Core i7-3610QE (deltaPct 0.5%). The i5-4670R is exactly tied with the Intel Core i5-3570 (deltaPct 0%) and is marginally ahead of the AMD Opteron 6272 (deltaPct -0.1%).

Head-to-Head Benchmarks

The benchmark data shows a remarkably consistent pattern: the AMD Opteron 6328 wins every test, but the margins are razor-thin. In Cinebench R15 multi-core, the Opteron scores 454 against the i5-4670R’s 448, a 1.3% advantage. The single-core version of the same test shows the Opteron at 64 versus 63, a 1.6% lead — the largest margin in the entire comparison. Moving to Cinebench R20, the Opteron posts 1894 multi-core and 267 single-core, while the Intel part scores 1868 and 263 respectively, translating to 1.4% and 1.5% leads. The most recent test, Cinebench R23, shows the Opteron at 4510 multi-core and 636 single-core against the i5-4670R’s 4448 and 627, again a 1.4% gap in both cases.

These numbers are notable for their uniformity. Across six different benchmarks spanning three generations of Cinebench, the Opteron’s advantage never dips below 1.3% or rises above 1.6%. This suggests a stable architectural edge rather than a workload-specific quirk. The practical impact is minimal — a 1.4% difference in a render benchmark would translate to less than a second in a minute-long render — but the consistency is worth noting. The i5-4670R’s four cores and four threads are clearly competitive with the Opteron’s eight cores and eight threads, which speaks to Intel’s superior per-core efficiency at the time. The Opteron compensates with sheer core count, but just barely.

Specification Differences

The two processors differ fundamentally in almost every specification category. The AMD Opteron 6328 has 8 cores and 8 threads, while the Intel Core i5-4670R has 4 cores and 4 threads. Clock speeds favor AMD: the Opteron runs at 3.20 GHz base and 3.80 GHz boost, versus the i5-4670R’s 3.00 GHz base and 3.70 GHz boost. Power consumption is a major differentiator — the Opteron draws 115W TDP compared to the Intel part’s 65W. The sockets are incompatible: AMD uses Socket G34 while Intel uses BGA 1364. The Opteron supports quad-channel DDR3 memory with 59.7 GB/s bandwidth and ECC, while the i5-4670R supports DDR3 but has no listed memory bus width, bandwidth, or ECC support. The Opteron has PCIe Gen 2, while the Intel part has no listed PCIe generation. The i5-4670R includes integrated graphics and has an unlocked multiplier, while the Opteron has neither. Finally, the Opteron’s launch MSRP was $575, and it is end-of-life, while the i5-4670R has no listed launch MSRP and is marked as active production.

Architecture Differences

The architectural gap between these two chips is generational and philosophical. The AMD Opteron 6328 uses the Piledriver architecture on the Abu Dhabi codename, built on a 32 nm process at GlobalFoundries. It packs 2,400 million transistors across a dual-die design measuring 2x 315 mm². The Intel Core i5-4670R uses the Haswell architecture, built on Intel’s 22 nm process with 1,400 million transistors on a single 177 mm² die. The cache layouts reflect their different design goals: the Opteron has 384 KB of L1 cache, 2 MB of L2 cache per module, and 8 MB of L3 cache per die, while the i5-4670R has 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 4 MB of shared L3 cache. The Opteron’s module-based design shares resources between pairs of cores, while the i5-4670R gives each core dedicated L1 and L2 cache. The Opteron is a server part from the Opteron 6000 series, released in late 2012, while the i5-4670R is a desktop part from the Core i5 Haswell generation, released in mid-2013. The Opteron is manufactured by GlobalFoundries, the Intel part by Intel itself. These are two fundamentally different approaches to processor design — AMD maximizing throughput with many cores on a larger, power-hungry die, and Intel focusing on efficiency and per-core performance on a smaller, cooler-running chip.