AMD Opteron 4284 vs AMD Opteron 4332 HE Comparison

The AMD Opteron 4284 and the AMD Opteron 4332 HE are two server-focused processors from the same Opteron 4000 series family, yet they present distinctly different trade-offs in core count, power envelope, and microarchitecture generation. The benchmark data reveals a consistent performance hierarchy, but the "HE" suffix on the 4332 suggests a design philosophy prioritizing efficiency over raw throughput. This analysis examines the head-to-head results, architectural divergence, and use-case implications derived strictly from the provided data.

Head-to-Head Benchmarks

The head-to-head benchmark results are remarkably one-sided, with the AMD Opteron 4284 winning all five recorded comparisons. The most significant margin appears in the Cinebench R20 single-core test, where the 4284 scores 234 against the 4332 HE's 196, representing a 19.4% advantage. This pattern of roughly a 19% delta holds consistently across nearly every workload, suggesting a fundamental throughput difference rather than a workload-specific quirk.

In multi-core tests, the Opteron 4284 maintains its lead. The Cinebench R15 multi-core result shows 399 points versus 335 for the 4332 HE, a gap of 19.1%. This trend continues in Cinebench R20 multi-core (1665 vs 1396, a 19.3% delta) and Cinebench R23 multi-core (3965 vs 3324, a 19.3% delta). The single-core results in R23 tell the same story: 559 for the 4284 versus 469 for the 4332 HE, a 19.2% difference.

What is striking is the consistency of these margins. Every single benchmark — regardless of whether it stresses one core or all cores — lands within a narrow band of 19.1% to 19.4%. This uniformity implies the performance gap is not caused by thermal throttling, memory bandwidth limitations, or a specific instruction set advantage, but rather by a fixed structural difference between the two chips. The data suggests the 4284 simply executes more work per clock cycle, or has access to more parallel resources, across the board.

The average benchmark scores confirm the closeness of these parts to their broader competitive set. The 4284 averages 1146 points, while the 4332 HE averages 1144 — a negligible 0.2% difference. Both sit at the 32nd percentile of all CPUs, placing them in the same performance tier relative to the wider market. Their nearest rivals include the Intel Core i7-2600S (deltaPct 0 for the 4284) and the Intel Core i5-4430 (deltaPct -0.3 for the 4284), indicating that this performance class is well-populated.

Architecture Differences

The architectural split between these two processors is significant, despite both using a 32 nm process node and packing the same 1,200 million transistors on a 315 mm² die. The Opteron 4284 is built on the Bulldozer architecture with the codename Valencia, while the Opteron 4332 HE uses the newer Piledriver architecture with the codename Seoul. This generational shift is likely the primary driver of the performance differences observed in the benchmarks.

Core and thread counts diverge sharply. The 4284 offers 8 cores and 8 threads, while the 4332 HE provides 6 cores and 6 threads. This is a 33% difference in core count, yet the performance gap is only about 19%, suggesting the Piledriver architecture in the 4332 HE is more efficient per core. The cache hierarchy reflects the core count disparity: the 4284 has 384 KB of L1 cache and 8 MB of L2 cache, while the 4332 HE has 288 KB of L1 and 6 MB of L2. Both share 8 MB of L3 cache.

Clock speeds are identical on paper — both run at 3.00 GHz base and 3.70 GHz boost. This makes the performance delta even more intriguing, as it cannot be attributed to raw clock frequency. The TDP tells a different story: the 4284 is rated at 95 watts, while the 4332 HE draws only 65 watts. The "HE" designation clearly stands for high efficiency, and the data shows that efficiency comes at the cost of substantial multi-core throughput.

Memory and platform support show some differences. Both support DDR3 memory, but the 4284 specifies dual-channel memory with 25.6 GB/s bandwidth, while the 4332 HE's memory bus and bandwidth are not listed in the data. The 4284 also supports ECC memory, a critical feature for server reliability, while the 4332 HE does not list ECC support. Both use the AMD Socket C32 platform and lack integrated graphics.

Where Each One Wins

The AMD Opteron 4284 wins on every benchmark where both were tested, making it the clear choice for raw compute performance. Its 8-core configuration provides a 19.1% advantage in Cinebench R15 multi-core and a 19.3% edge in both R20 and R23 multi-core tests. For workloads that scale with core count — such as virtualization, database processing, or multi-threaded scientific computing — the 4284's additional two cores translate directly into measurable performance gains.

The Opteron 4332 HE wins on power efficiency, a factor not captured in benchmark scores but implicit in the TDP figures. At 65 watts versus 95 watts, the 4332 HE consumes roughly 31.6% less power than the 4284. In a dense server environment with hundreds of processors, this power reduction could significantly lower cooling requirements and operational costs. The data does not include performance-per-watt metrics, but the TDP ratio suggests the 4332 HE delivers about 88% of the 4284's multi-core performance while using only about 68% of the power budget.

Single-core performance tells a nuanced story. The 4284 wins by 19.4% in Cinebench R20 single-core and 19.2% in R23 single-core, which is surprising given the identical clock speeds. This suggests the Bulldozer architecture's larger L1 and L2 caches (384 KB and 8 MB versus 288 KB and 6 MB) provide a meaningful advantage for latency-sensitive single-threaded workloads. For legacy applications that rely heavily on single-core performance, the 4284 is the superior choice despite its older architecture.

FAQ

Q: Which processor has more cores?

A: The AMD Opteron 4284 has 8 cores and 8 threads, while the AMD Opteron 4332 HE has 6 cores and 6 threads. This gives the 4284 a 33% core advantage.

Q: How large is the performance gap in multi-core benchmarks?

A: The Opteron 4284 leads by 19.1% in Cinebench R15 multi-core (399 vs 335), 19.3% in Cinebench R20 multi-core (1665 vs 1396), and 19.3% in Cinebench R23 multi-core (3965 vs 3324).

Q: What is the power consumption difference?

A: The Opteron 4284 has a TDP of 95 watts, while the Opteron 4332 HE has a TDP of 65 watts. The 4332 HE consumes 30 watts less power.

Q: Do both processors have the same clock speeds?

A: Yes, both run at 3.00 GHz base clock and 3.70 GHz boost clock. The performance differences cannot be attributed to clock speed.

Q: Which architecture is newer?

A: The Opteron 4332 HE uses the newer Piledriver architecture (codename Seoul), while the Opteron 4284 uses the older Bulldozer architecture (codename Valencia).

Q: Does the Opteron 4332 HE support ECC memory?

A: No, the data does not list ECC memory support for the Opteron 4332 HE. The Opteron 4284 explicitly lists ECC memory support as true.

The Verdict

The benchmark data presents a clear performance hierarchy: the AMD Opteron 4284 is the superior processor for compute-intensive workloads, winning all five head-to-head comparisons by margins between 19.1% and 19.4%. Its 8-core configuration, larger cache hierarchy, and higher TDP budget all contribute to this consistent advantage. Any workload that can utilize multiple cores — and the data shows even single-threaded workloads benefit — will see a measurable performance uplift from choosing the 4284 over the 4332 HE.

However, the Opteron 4332 HE is not without merit. Its 65-watt TDP represents a significant power reduction compared to the 4284's 95-watt rating, making it the appropriate choice for power-constrained environments where energy costs or cooling capacity are limiting factors. The 4332 HE also benefits from the newer Piledriver architecture, which may offer improvements in instruction efficiency, though the benchmark data shows this does not translate into higher raw scores.

For server deployments where performance is the primary objective and power consumption is secondary, the Opteron 4284 is the clear winner. For high-density server racks, hyperscale deployments, or installations with strict power budgets, the Opteron 4332 HE's efficiency profile may justify its lower performance. The average benchmark scores of 1146 vs 1144 place these chips in the same market tier, but the use case determines which metric — raw speed or power efficiency — matters more.

Specification Differences

The following table outlines the key specification differences between the two processors, based solely on the provided data:

| Specification | AMD Opteron 4284 | AMD Opteron 4332 HE |

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

| Cores | 8 | 6 |

| Threads | 8 | 6 |

| TDP | 95 W | 65 W |

| Architecture | Bulldozer | Piledriver |

| Codename | Valencia | Seoul |

| L1 Cache | 384 KB | 288 KB |

| L2 Cache | 8 MB | 6 MB |

| ECC Memory | True | False |

| Memory Bus | Dual-channel | Not listed |

| Memory Bandwidth | 25.6 GB/s | Not listed |

| Release Date | 2011-11-13 | 2012-12-03 |

| Launch MSRP | $316 | Not listed |

| Part Number | OS4284WLU8KGU | OS4332OFU6KHK |