AMD Opteron 6328 vs Intel Atom x7425E Comparison

Head-to-Head Benchmarks

The benchmark data presents a striking pattern: the AMD Opteron 6328 wins all six recorded Cinebench comparisons, yet the margins are uniformly narrow. Across the entire head-to-head set, the Opteron never leads by more than 3.2%, and in four of the six tests, the advantage sits at exactly 2.4%. This consistency suggests a fundamental performance parity between two processors released more than a decade apart.

In Cinebench R15 multi-core, the Opteron 6328 scores 454 against the Atom x7425E's 443, a 2.5% edge. The single-core R15 result shows the Opteron at 64 and the Atom at 62, a 3.2% gap, the largest delta in the entire comparison. Moving to R20, the multi-core test yields 1894 versus 1849, a 2.4% difference, while single-core lands at 267 versus 260, a 2.7% margin. The R23 results mirror the R20 pattern: multi-core 4510 versus 4403, and single-core 636 versus 621, both representing 2.4% advantages for the AMD part.

What makes these numbers curious is the architectural chasm between the two. The Opteron 6328 is an eight-core, eight-thread server processor built on AMD's Piledriver architecture at 32 nm, running at a base clock of 3.20 GHz with a boost of 3.80 GHz. The Atom x7425E is a four-core, four-thread mobile chip using Intel's Alder Lake-N architecture with Gracemont cores at 10 nm, operating at a base of 1500.00 MHz (1.50 GHz) and boosting to 3.40 GHz. The Opteron has twice the cores and threads, yet it only manages a 2.5% multi-core win in R15. This implies that per-core efficiency heavily favors the Atom, which achieves near-parity while using a fraction of the power envelope.

The average benchmark scores reinforce this picture. The Opteron 6328 records an average score of 1304 across all benchmarks, placing it in the 35th percentile of all CPUs. The Atom x7425E averages 1273, also in the 35th percentile. The delta between them is roughly 2.4%, which aligns precisely with the head-to-head Cinebench margins. Both chips sit among comparable rivals: the Opteron's nearest competitor is the Intel Core i5-6400 at 1307 (a -0.2% delta), while the Atom's closest match is the Intel Core i5-4430S at 1274 (a 0% delta). The data suggests these two processors occupy nearly the same performance tier despite their vastly different origins.

FAQ

Q: Which processor wins more benchmark tests?

A: The AMD Opteron 6328 wins all six recorded head-to-head Cinebench tests. The Intel Atom x7425E records zero wins in the comparison.

Q: What is the largest performance gap between the two?

A: The biggest margin is in Cinebench R15 single-core, where the Opteron 6328 leads by 3.2% (64 versus 62). All other deltas fall between 2.4% and 2.7%.

Q: How do their average benchmark scores compare?

A: The Opteron 6328 has an average benchmark score of 1304, while the Atom x7425E averages 1273. Both processors rank in the 35th percentile of all CPUs.

Q: What are their core and thread counts?

A: The Opteron 6328 has 8 cores and 8 threads. The Atom x7425E has 4 cores and 4 threads.

Q: Do both processors support ECC memory?

A: No. The AMD Opteron 6328 supports ECC memory, while the Intel Atom x7425E does not list ECC memory support.

Q: What is the release date difference?

A: The Opteron 6328 was released on November 4, 2012. The Atom x7425E was released on January 2, 2023, roughly a decade later.

Where Each One Wins

Based strictly on the recorded data, the AMD Opteron 6328 wins every benchmark category. In multi-core workloads, it leads the Atom x7425E by 2.5% in R15, 2.4% in R20, and 2.4% in R23. These margins are consistent across all rendering tests, suggesting the Opteron's eight cores provide a modest but reliable advantage over the Atom's four cores in threaded workloads.

For single-core tasks, the Opteron again prevails, with margins of 3.2% in R15, 2.7% in R20, and 2.4% in R23. The single-core advantage is slightly more pronounced in the older R15 test, though the overall pattern remains one of near-parity. The Atom x7425E's higher boost clock of 3.40 GHz cannot fully compensate for the Opteron's 3.80 GHz boost in these specific tests.

The Intel Atom x7425E does not win any recorded benchmark. However, its performance profile relative to its power consumption is noteworthy. The Atom has a TDP of 12 watts, while the Opteron draws 115 watts, a nearly tenfold difference. In scenarios where energy efficiency is the primary metric rather than raw score, the Atom's ability to match the Opteron within 2.4% to 3.2% across all tests indicates exceptional per-watt performance. The data cannot quantify efficiency directly, but the TDP figures combined with the near-identical scores suggest the Atom achieves comparable results with drastically lower power draw.

Specification Differences

The two processors differ across nearly every specification category. The AMD Opteron 6328 features 8 cores and 8 threads, while the Intel Atom x7425E has 4 cores and 4 threads. Base clocks diverge significantly: the Opteron runs at 3.20 GHz, the Atom at 1500.00 MHz (1.50 GHz). Boost clocks are closer, with the Opteron at 3.80 GHz and the Atom at 3.40 GHz.

Thermal design power presents the starkest contrast. The Opteron has a TDP of 115 watts, while the Atom draws just 12 watts. Socket types differ entirely: the Opteron uses AMD Socket G34, the Atom uses Intel BGA 1264. Memory support varies, with the Opteron using DDR3 in a quad-channel configuration delivering 59.7 GB/s bandwidth, while the Atom supports DDR4 and DDR5 in a single-channel setup at 38.4 GB/s. The Opteron supports ECC memory; the Atom does not.

PCIe generations differ, with the Opteron on Gen 2 and the Atom on Gen 3 with 9 lanes. The Atom includes integrated UHD Graphics 24EU, while the Opteron has no integrated graphics. Production status also differs: the Opteron is end-of-life, the Atom is active. Launch MSRP values are recorded at $575 for the Opteron and $58 for the Atom, though these figures represent initial pricing only.

Architecture Differences

The architectural divide between these chips is substantial. The AMD Opteron 6328 belongs to the Opteron 6000 series under the codename Abu Dhabi, using the Piledriver architecture. It is built on a 32 nm process by GlobalFoundries, containing 2,400 million transistors across a die size of 2x 315 mm². Its cache hierarchy comprises 384 KB of L1, 2 MB of L2 per module, and 8 MB of L3 per die.

The Intel Atom x7425E uses the Alder Lake-N architecture with the codename Alder Lake-N, part of the Atom generation built on Gracemont cores. It is manufactured on a 10 nm process by Intel. Cache configuration includes 96 KB of L1 per core, 2 MB of shared L2, and 6 MB of shared L3. The Atom integrates graphics, a feature absent from the Opteron.

The generational gap is clear: the Opteron represents AMD's server-oriented Piledriver design from 2012, while the Atom embodies Intel's modern low-power Gracemont efficiency cores from 2023. The process node improvement from 32 nm to 10 nm explains how the Atom achieves comparable benchmark scores with one-quarter the core count and roughly one-tenth the TDP. The Opteron's dual-die design with 2x 315 mm² reflects a multi-chip module approach, whereas the Atom uses a monolithic die.

The Verdict

The recorded data indicates that the AMD Opteron 6328 is the faster processor in every measured benchmark, but only by a narrow margin. Its six wins range from 2.4% to 3.2%, which places both chips in the same performance bracket. The Opteron's 8 cores and 8 threads against the Atom's 4 cores and 4 threads produce only a marginal multi-core advantage, implying that the Atom's Gracemont cores are significantly more efficient per thread.

Who should choose the Opteron 6328? The data supports its selection for workloads that require the absolute highest Cinebench scores among the two, particularly in single-core R15 where its 3.2% lead is largest. Its ECC memory support and quad-channel DDR3 bandwidth of 59.7 GB/s also differentiate it for server or workstation applications, though the benchmark scores themselves do not directly measure memory-dependent tasks.

Who should choose the Atom x7425E? The data supports its selection for scenarios where power consumption is critical. Its 12-watt TDP versus the Opteron's 115 watts, combined with benchmark scores within 2.4% to 3.2%, indicates exceptional energy efficiency. The Atom's active production status, modern 10 nm process, DDR4/DDR5 support, and integrated graphics make it a more current platform. Its single-channel memory bandwidth of 38.4 GB/s is lower, but for mobile or embedded deployments where the Opteron's 115-watt requirement is impractical, the Atom's performance parity per watt is compelling.

The percentile rankings tell a similar story: both sit at the 35th percentile of all CPUs, confirming they are equivalent in overall standing. The Opteron's average score of 1304 versus the Atom's 1273 reflects a difference of just 2.4%. For buyers prioritizing raw Cinebench numbers, the Opteron wins. For buyers prioritizing modern features, low power draw, and active production support, the Atom presents the more balanced choice. The data does not declare a universal winner; it reveals two processors that achieve nearly identical results through radically different engineering approaches.