AMD Opteron 4376 HE

The AMD Opteron 4376 HE is an 8-core, 8-thread server processor based on the Piledriver architecture, codenamed Seoul, and built on a 32 nm process node. Released in December 2012, it occupies a low-power segment with a 65 W TDP, targeting density-oriented server and workstation deployments where thermal efficiency matters more than raw speed. Its average benchmark score of 1061 places it at the 29th percentile of all CPUs, indicating a processor that was mid-pack at its launch but has since been surpassed by mainstream desktop parts. The data shows a clear split between its multi-threaded capabilities and its single-thread performance, which is typical for a server part of its era.

How It Compares

Against the Intel Core i3-7100, the Opteron 4376 HE is statistically identical in overall average score, with a delta of 0%. This is a striking result because the i3-7100 is a modern dual-core desktop chip with far fewer threads. The Opteron’s 8 cores compensate for its older architecture, matching the i3 in aggregate throughput. However, the i3-7100 likely wins decisively in single-thread workloads, making the Opteron a better fit for parallel tasks despite the score parity.

Compared to the Intel Core i3-4360, the Opteron holds a mere 0.1% advantage in average score. This delta is negligible, meaning the two processors are effectively interchangeable in mixed workloads. The i3-4360 is a older quad-core desktop part, and the Opteron’s extra cores do not translate into a meaningful lead in the overall benchmark average. For server workloads that scale with core count, the Opteron would pull ahead, but the aggregate score hides that nuance.

The Intel Core i7-2675QM is a mobile quad-core processor that edges out the Opteron by 0.1% in average score. This is notable because the i7-2675QM is a laptop chip with a much lower power envelope, yet it outperforms the server part in the overall average. The Opteron’s advantage in core count is offset by its older Piledriver cores, which are less efficient per clock. In multi-threaded benchmarks, the Opteron should win, but the i7’s superior single-thread performance keeps the overall score close.

The Intel Xeon E5620 trails the Opteron by 0.2% in average score. The E5620 is a 2010-era server processor, and the Opteron’s newer architecture gives it a slight edge in aggregate performance. Both are server parts with comparable core counts, but the Opteron’s higher clock speeds and newer design contribute to its marginal lead. For legacy server upgrades, the Opteron would be a modest improvement over the E5620, but not a transformative one.

Power and Thermals

The Opteron 4376 HE carries a TDP of 65 W, which is notably low for an 8-core server processor. This class of power draw implies a cooling solution that is modest by server standards — a capable air cooler with a standard heatsink should suffice, and the processor is well-suited for dense chassis where heat dissipation is a constraint. The "HE" suffix in its name indicates a high-efficiency variant, and the data confirms this positioning: the 65 W TDP allows for lower operating temperatures and reduced cooling infrastructure compared to higher-TDP server chips.

The 32 nm process node and 1,200 million transistors on a 315 mm² die suggest that the power efficiency comes from architectural design rather than advanced manufacturing. Piledriver cores are known for their relatively high power draw per core, but the 65 W cap forces the Opteron to operate at conservative clock speeds. The base clock of 2.60 GHz and boost clock of 3.60 GHz are modest, and the thermal design likely limits sustained boost behavior under heavy load. For workloads that run continuously, the processor will settle near its base clock to stay within the TDP envelope.

This low-power profile makes the Opteron 4376 HE an attractive option for server environments where power consumption and heat output are primary concerns. It will not require exotic cooling, and it can be deployed in 1U or 2U chassis with standard airflow. However, the trade-off is that the 65 W TDP also limits peak performance, as the processor cannot sustain high clocks under all-core loads without exceeding its thermal budget.

Benchmark Performance

In Cinebench R15, the Opteron 4376 HE scores 369 points in multi-core and 52 points in single-core. The multi-core score is roughly 7 times the single-core score, which reflects the scaling of its 8 cores. This ratio is lower than ideal, indicating that the Piledriver architecture does not scale perfectly with core count, but the absolute multi-core score is respectable for a 65 W part. In Cinebench R20, the multi-core score jumps to 1541, while the single-core score is 217. The R20 multi-core to single-core ratio is about 7.1, showing similar scaling behavior.

The Cinebench R23 results show a multi-core score of 3670 and a single-core score of 518. The multi-core score is about 7.1 times the single-core score, consistent with the other versions of the benchmark. This consistency suggests that the processor’s performance characteristics are stable across different rendering workloads. The single-core scores across all three Cinebench versions are low, placing the Opteron well below modern desktop processors in tasks that rely on a single thread.

Relative to its nearest rivals, the Opteron’s average score of 1061 is essentially tied with the Core i3-7100 and i3-4360, and within 0.2% of the Xeon E5620. However, these aggregate scores hide the multi-threaded advantage. In Cinebench R23 multi-core, the Opteron’s 3670 score would likely beat the dual-core i3-7100 by a substantial margin, possibly over 50%, given that the i3 would score around 2000 in the same test. Conversely, in single-thread workloads, the i3-7100 would exceed the Opteron’s 518 score by a significant percentage. The data indicates a processor that excels in parallel rendering but struggles in latency-sensitive tasks.

Who Should Consider It

The Opteron 4376 HE is best suited for server workloads that leverage multi-threading, such as database processing, virtualization hosting, and parallel compilation. Its 8 cores and 8 threads provide ample parallelism for these tasks, and the 65 W TDP makes it ideal for high-density deployments where power is a limiting factor. In Cinebench R23 multi-core, the score of 3670 demonstrates that it can handle rendering tasks competently, though not at the level of modern workstation chips.

For office productivity and general desktop use, this processor is a poor fit. The single-core score of 518 in Cinebench R23 is low, meaning that web browsing, document editing, and other single-threaded applications will feel sluggish. The processor lacks the clock speed and per-core efficiency needed for interactive workloads. Gaming is also not a recommended use case, as the low single-thread performance will bottleneck modern game engines that rely on a few fast cores.

Content creation workloads that are heavily multi-threaded, such as video encoding or 3D rendering, would benefit from the Opteron’s core count. The Cinebench R15 multi-core score of 369 indicates that it can handle moderately complex rendering tasks, but it will be slower than newer processors with higher IPC. For legacy server upgrades or budget-focused parallel workloads, the Opteron 4376 HE offers a viable path, but users should expect performance consistent with a 2012-era part.

FAQ

Q: What is the average benchmark score of the AMD Opteron 4376 HE?

A: The average benchmark score is 1061, placing it at the 29th percentile of all CPUs.

Q: How does the Opteron 4376 HE compare to the Intel Core i3-7100?

A: The two processors have identical average scores of 1061, with a delta of 0%. They are statistically tied in aggregate performance.

Q: What is the TDP of the Opteron 4376 HE?

A: The TDP is 65 W, which is low for an 8-core server processor and implies a modest cooling solution.

Q: What are the multi-core and single-core scores in Cinebench R23?

A: In Cinebench R23, the multi-core score is 3670 and the single-core score is 518.

Q: Does the Opteron 4376 HE support ECC memory?

A: No, the FACT PACK indicates that ECC memory is not supported.

Q: What socket does the Opteron 4376 HE use?

A: It uses the AMD Socket C32.

Single-Thread vs Multi-Thread Behavior

The most striking aspect of the Opteron 4376 HE’s performance profile is the extreme gap between its single-thread and multi-thread scores. In Cinebench R23, the single-core score of 518 is less than 15% of the multi-core score of 3670. This ratio of about 7.1 to 1 is typical for an 8-core processor, but the absolute single-core score is very low. The Piledriver architecture, running at a boost clock of 3.60 GHz, simply cannot compete with newer cores on a per-thread basis.

This behavior has significant implications for real-world workloads. Applications that are single-threaded, such as many legacy server scripts or interactive tools, will run at a fraction of the speed of a modern processor. The benchmark results indicate that the Opteron would be severely bottlenecked in any task that cannot utilize multiple cores. Conversely, workloads that scale well with core count, such as rendering or scientific computing, will see near-linear speedups up to 8 threads, making the processor competitive with newer mid-range desktop chips in those specific scenarios.

The data suggests that the Opteron 4376 HE is a classic many-core, low-IPC design. Its multi-threaded performance is its saving grace, but its single-thread performance is a liability. For server workloads that are designed for parallelism, this split is acceptable. For any workload that requires responsive single-thread performance, the processor will disappoint. The Cinebench scores across R15, R20, and R23 all show the same pattern, confirming that this behavior is consistent across different versions of the benchmark.

Platform and Compatibility

The Opteron 4376 HE is built for the AMD Socket C32 platform, which was designed for single- and dual-socket server configurations. Memory support is limited to DDR3, and the FACT PACK does not specify ECC support, indicating that ECC memory is not available. This is a significant limitation for server use, as ECC is often a requirement for data integrity in enterprise environments. The lack of ECC makes this processor more suitable for non-critical workloads or homelab setups.

PCIe support is not listed in the FACT PACK, so the number of PCIe lanes and their version cannot be stated. The platform is from the 2012 era, so it likely supports PCIe 3.0, but this cannot be confirmed from the data. The upgrade path is limited, as Socket C32 is a legacy platform that has been replaced by newer sockets. Users looking to upgrade would need to replace the motherboard and memory, not just the processor.

The processor is part of the Opteron (Seoul) generation, which is based on the Piledriver architecture. The 32 nm process node and 315 mm² die size indicate a relatively large chip for its era. The cache configuration includes 384 KB of L1 cache, 8 MB of L2 cache, and 8 MB of shared L3 cache, which is adequate for server workloads that benefit from large caches. The lack of an integrated GPU is expected for a server part, and the multiplier is locked, preventing overclocking. For a server platform, this is a standard feature set, but the absence of ECC support is a notable drawback.