CPU Comparison

The AMD Opteron 6386 SE and Intel Xeon E-2124G are both end-of-life server/workstation processors, yet they represent radically different design philosophies from different eras. The Opteron is a 16-core Piledriver monster from late 2012, built for massive parallel throughput on a 32nm process, while the Xeon is a 4-core Coffee Lake part from mid-2018, optimized for high clock speeds and efficiency on 14nm. The benchmark data shows a clear, consistent winner: the AMD Opteron 6386 SE outperforms the Xeon E-2124G in every single Cinebench test, with margins ranging from 15.5% to 16.3%. Despite the Xeon’s much newer architecture and higher boost clock, the Opteron’s sheer core count advantage proves decisive in rendering workloads.

FAQ

Q: Which processor wins in multi-core rendering?

A: The AMD Opteron 6386 SE wins decisively. In Cinebench R23 multi-core, it scores 7047 against the Xeon E-2124G's 6092, a 15.7% advantage. Similarly, in Cinebench R20 multi-core, the Opteron scores 2959 versus 2558, a 15.7% lead.

Q: Does the Intel Xeon E-2124G win in any benchmark?

A: No. The data shows the Xeon loses all six head-to-head Cinebench tests. The Opteron wins both single-core and multi-core tests across R15, R20, and R23.

Q: How big is the single-core performance gap?

A: The Opteron leads by 16.3% in Cinebench R15 single-core (100 vs 86), 15.5% in R20 single-core (417 vs 361), and 15.6% in R23 single-core (994 vs 860). The margins are remarkably consistent.

Q: What are the core and thread counts?

A: The AMD Opteron 6386 SE has 16 cores and 16 threads. The Intel Xeon E-2124G has 4 cores and 4 threads. Neither processor supports simultaneous multithreading.

Q: Which processor has a higher clock speed?

A: The Intel Xeon E-2124G has a higher base clock of 3.40 GHz and boost clock of 4.50 GHz. The AMD Opteron 6386 SE has a base clock of 2.80 GHz and boost clock of 3.50 GHz.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Opteron 6386 SE and the Intel Xeon E-2124G support ECC memory, making them suitable for server and workstation environments.

Where Each One Wins

The AMD Opteron 6386 SE wins everywhere in the Cinebench suite. It takes the multi-core tests by leveraging its 16 cores against the Xeon's 4 cores. In Cinebench R23 multi-core, the Opteron's 7047 score is 15.7% higher than the Xeon's 6092. The R20 multi-core test shows a similar story: 2959 versus 2558, a 15.7% gap. The R15 multi-core result is 710 versus 613, a 15.8% lead. These margins indicate that the Opteron scales effectively across all core counts in rendering workloads.

Surprisingly, the Opteron also wins in single-core tests. The Xeon's higher boost clock of 4.50 GHz does not translate into a win. In Cinebench R23 single-core, the Opteron scores 994 versus the Xeon's 860, a 15.6% advantage. The R20 single-core test shows 417 versus 361, a 15.5% lead, and the R15 single-core test shows 100 versus 86, a 16.3% lead. This suggests the Opteron's older Piledriver architecture still delivers competitive per-thread performance in these specific workloads.

The Intel Xeon E-2124G has no benchmark wins to claim. Its only available benchmark not shared with the Opteron is Geekbench, where it scores 4263 multi-core and 1438 single-core, but there is no Opteron Geekbench score for comparison. The Xeon's advantages lie outside the Cinebench data: it has a lower TDP of 71 watts versus 140 watts, supports faster DDR4 memory, and includes integrated HD Graphics P630, which the Opteron lacks entirely.

Architecture Differences

The AMD Opteron 6386 SE is built on the Piledriver architecture, codenamed Abu Dhabi, using a 32nm process from GlobalFoundries. It features a massive 2,400 million transistors spread across a dual-die design with each die measuring 315 mm². The cache layout is per-module: 2 MB of L2 cache per module and 8 MB of L3 cache per die. The L1 cache totals 768 KB. This design dates back to the Opteron 6000 series generation.

The Intel Xeon E-2124G uses the Coffee Lake architecture, specifically the Coffee Lake-S WS variant, fabricated on Intel's 14nm process. The die size is 126 mm², and the cache is organized per-core: 64 KB L1 per core, 256 KB L2 per core, and 8 MB of shared L3 cache. This is a monolithic design from the Xeon E-2100 series generation.

Memory support differs significantly. The Opteron uses DDR3 memory on a quad-channel bus, delivering 51.2 GB/s of bandwidth. The Xeon uses DDR4 on a dual-channel bus, delivering 42.7 GB/s. The Xeon also has integrated HD Graphics P630, while the Opteron has no integrated graphics. PCIe support differs as well: the Opteron provides Gen 2 lanes, while the Xeon provides Gen 3 with 16 lanes from the CPU.

Specification Differences

The core count is the most striking difference: the AMD Opteron 6386 SE has 16 cores and 16 threads, while the Intel Xeon E-2124G has 4 cores and 4 threads. Clock speeds favor the Xeon, with a base clock of 3.40 GHz and boost clock of 4.50 GHz, compared to the Opteron's 2.80 GHz base and 3.50 GHz boost. The TDP reflects this: the Opteron draws 140 watts, while the Xeon draws just 71 watts.

The manufacturing process differs by two generations: the Opteron uses 32nm from GlobalFoundries, while the Xeon uses 14nm from Intel. The Opteron's die size is listed as 2x 315 mm², totaling 630 mm², while the Xeon's is 126 mm². Transistor count is only given for the Opteron at 2,400 million; no figure is listed for the Xeon.

Memory channels and type differ: the Opteron uses quad-channel DDR3 with 51.2 GB/s bandwidth, while the Xeon uses dual-channel DDR4 with 42.7 GB/s. Both support ECC memory. The sockets are incompatible: AMD Socket G34 for the Opteron and Intel Socket 1151 for the Xeon. The Opteron has no integrated graphics, while the Xeon includes HD Graphics P630. PCIe support is Gen 2 for the Opteron and Gen 3 (16 lanes) for the Xeon.

Head-to-Head Benchmarks

The six Cinebench comparisons all favor the AMD Opteron 6386 SE. The multi-core tests show a consistent 15.7-15.8% advantage. In Cinebench R15 multi-core, the Opteron scores 710 against the Xeon's 613, a 15.8% delta. In R20 multi-core, the scores are 2959 versus 2558, a 15.7% delta. In R23 multi-core, the scores are 7047 versus 6092, also a 15.7% delta. The Opteron's 16 cores provide a clear throughput benefit in these heavily threaded workloads.

The single-core results are more surprising given the Xeon's clock speed advantage. In Cinebench R15 single-core, the Opteron scores 100 versus the Xeon's 86, a 16.3% delta. In R20 single-core, the Opteron scores 417 versus 361, a 15.5% delta. In R23 single-core, the Opteron scores 994 versus 860, a 15.6% delta. The Opteron's per-core performance in Cinebench is apparently strong enough to overcome the Xeon's higher clocks.

Looking at the average benchmark scores, the two processors are nearly identical overall. The Opteron has an average score of 2038, while the Xeon has 2034, a 0.2% difference. Both sit at the 45th percentile of all CPUs. The nearest rivals also cluster tightly: the Intel Core i7-7700T scores 2039, the Intel Core i7-3960X scores 2037, and the AMD Ryzen 5 4500U scores 2035. This means that while the Opteron wins the Cinebench head-to-heads, the overall performance picture is essentially a tie.

The Verdict

The data tells a straightforward story: the AMD Opteron 6386 SE is the faster processor for Cinebench rendering workloads. It wins all six head-to-head tests with margins between 15.5% and 16.3%. If you are choosing purely based on rendering performance, the Opteron is the clear pick. Its 16 cores deliver a 15.7% advantage in multi-core tests, and it even manages to beat the Xeon in single-core tests by similar margins.

However, the Intel Xeon E-2124G is not without merits. It offers a 71-watt TDP versus the Opteron's 140 watts, which means significantly lower power consumption and heat output. It supports newer DDR4 memory and includes integrated HD Graphics P630, eliminating the need for a separate GPU in basic server tasks. Its Gen 3 PCIe support is more modern than the Opteron's Gen 2. For workloads that are not heavily threaded and where power efficiency matters, the Xeon is the more practical choice.

The benchmark data also shows that these processors are near-equal in overall average score: 2038 for the Opteron and 2034 for the Xeon. The Opteron's wins in Cinebench are offset by the fact that the Xeon has additional Geekbench scores (4263 multi-core, 1438 single-core) that the Opteron lacks. The overall performance class is the same, as both sit at the 45th percentile of all CPUs.

For a builder prioritizing raw multi-core rendering performance, the AMD Opteron 6386 SE is the winner. For a builder prioritizing power efficiency, newer memory technology, and integrated graphics, the Intel Xeon E-2124G is the better fit. The data does not support a single universal recommendation; it supports a use-case-based decision.