AMD Opteron 6281 vs Intel Core i5-8269U Comparison

The AMD Opteron 6281 and the Intel Core i5-8269U represent two fundamentally different design philosophies that arrive at nearly identical performance in the recorded benchmark data. The Opteron is a 16-core server processor built on a 32 nm process with a 130 W TDP, while the i5-8269U is a 4-core, 8-thread mobile chip fabbed on Intel's 14 nm node at just 28 W. Despite the enormous gap in core count, clock behavior, and power envelope, the database shows the Opteron winning every one of the six head-to-head tests by margins of roughly 2.2 to 2.4 percent. That narrow, uniform spread is the defining story of this pairing: a multi-socket-era server part barely edges out a modern low-power laptop processor.

The Verdict

The data delivers a clean sweep for the Opteron 6281, six wins from six tests, but the margins are so small that the choice between these chips should be driven entirely by platform characteristics rather than raw throughput. All six deltas fall between 2.2 and 2.4 percent, a range tight enough that no workload category meaningfully favors one over the other in the recorded Cinebench suite.

Pick the Opteron 6281 if raw multi-core and single-core scores are the only criterion, and if the surrounding platform features matter: it offers ECC memory support, quad-channel DDR3 with 51.2 GB/s of memory bandwidth, and the Socket G34 platform. Its launch MSRP was $988, and it is now end-of-life, which constrains practical deployment but says nothing about its measured performance.

Pick the Core i5-8269U if power efficiency and integration matter more than a two-percent score difference. It delivers its results at a 28 W TDP versus the Opteron's 130 W, includes Iris Pro Plus integrated graphics where the Opteron has none, and remains an active product. It also carries a higher boost clock, reaching 4.20 GHz against the Opteron's 3.20 GHz.

Context from the broader database reinforces how evenly matched they are. The Opteron sits in the 42nd percentile against all CPUs with an average benchmark score of 1789; the i5-8269U sits in the 41st percentile at 1748. Their nearest-rivals lists overlap in character: the Opteron's closest competitors include the AMD Ryzen 3 3200GE (avgScore 1787, 0.1 percent delta), the AMD Ryzen 3 PRO 1300 (1778, 0.6 percent), the Intel Xeon E5-4610 v3 (1777, 0.7 percent), and the Intel Xeon E5-1620 v4 (1802, minus 0.7 percent). The i5-8269U's rivals are the AMD Ryzen 3 PRO 3200GE (1750, minus 0.1 percent), the Intel Core i7-980X (1746, 0.1 percent), the Intel Core i5-6600 (1744, 0.3 percent), and the AMD Ryzen 3 4300U (1742, 0.4 percent). Both chips occupy the same neighborhood of mid-tier desktop and entry workstation performance, roughly six years apart in release date.

FAQ

Q: Which processor is faster overall?

A: The AMD Opteron 6281 wins all six recorded head-to-head benchmarks, with deltas of 2.3 percent in Cinebench R15 multi-core, 2.4 percent in R15 single-core, 2.4 percent in R20 multi-core, 2.2 percent in R20 single-core, 2.4 percent in R23 multi-core, and 2.3 percent in R23 single-core.

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

A: Very small. The Opteron scores 87 versus 85 in R15, 366 versus 358 in R20, and 873 versus 853 in R23, a consistent lead of 2.2 to 2.4 percent across all three generations of Cinebench.

Q: Does the Opteron's 16 cores translate into a big multi-core advantage?

A: No. Despite having 16 cores and 16 threads against the i5-8269U's 4 cores and 8 threads, the Opteron's multi-core lead is only 2.3 to 2.4 percent: 623 versus 609 in R15, 2598 versus 2538 in R20, and 6187 versus 6044 in R23.

Q: Which chip is more power-efficient?

A: The recorded data indicates the i5-8269U achieves near-parity at a 28 W TDP, while the Opteron's results come at a 130 W TDP. The database does not record efficiency scores, but the TDP figures alone show a substantial difference in design power.

Q: Do these processors support ECC memory?

A: The Opteron 6281 supports ECC memory; the Core i5-8269U does not.

Q: Which has integrated graphics?

A: The i5-8269U includes Iris Pro Plus integrated graphics. The Opteron 6281 has no integrated graphics, consistent with its server focus.

Architecture Differences

The two processors come from opposite ends of the industry spectrum. The Opteron 6281 uses AMD's Bulldozer architecture, codename Interlagos, part of the Opteron 6000 series. It was fabricated on a 32 nm process at GlobalFoundries, packs 2,400 million transistors across a dual-die layout of 2x 315 mm², and targets the Server/Workstation segment through Socket G34. Its release date is recorded as 2012-04-30.

The Core i5-8269U uses Intel's Kaby Lake architecture, codename Kaby Lake-R, classified as a Kaby Lake-U Refresh part. It was fabbed on Intel's own 14 nm process on a single 123 mm² die and targets the Mobile segment through the BGA 1356 package. Its release date is recorded as 2018-04-04, roughly six years after the Opteron.

The core topology gap is stark: 16 cores and 16 threads without SMT on the Opteron, versus 4 cores and 8 threads with SMT on the Intel part. Yet the Bulldozer design's per-thread throughput, reflected in a 2.50 GHz base and 3.20 GHz boost, gives the Opteron only a slim single-core lead over a mobile chip that boosts to 4.20 GHz from a 2.60 GHz base. Benchmark results indicate how much per-clock efficiency moved between the 32 nm Bulldozer era and the 14 nm Kaby Lake era: the modern mobile design nearly closes the entire gap with a quarter of the cores.

Cache organization also differs in structure. The Opteron carries 768 KB of L1, 2 MB of L2 per module, and 8 MB of L3 per die across its two-die package. The i5-8269U carries 64 KB of L1 per core, 256 KB of L2 per core, and a unified 6 MB of shared L3. Neither part offers 3D V-Cache.

Specification Differences

The table of differing fields is long, and every row matters to the comparison.

Cores and threads: 16/16 for the Opteron versus 4/8 for the i5-8269U. Base clock: 2.50 GHz versus 2.60 GHz. Boost clock: 3.20 GHz versus 4.20 GHz. TDP: 130 W versus 28 W. Socket: AMD Socket G34 versus Intel BGA 1356, meaning the Opteron is socketed while the Intel part is soldered.

Memory support diverges generationally: DDR3 with a quad-channel bus and 51.2 GB/s of bandwidth on the Opteron, versus DDR4 on the i5-8269U with no recorded bus or bandwidth figures. ECC is present only on the Opteron. PCIe is recorded as Gen 2 on the Opteron and is not recorded for the i5-8269U.

The Opteron has no integrated graphics; the i5-8269U ships with Iris Pro Plus. Production status splits them as well: the Opteron is end-of-life, the i5-8269U is active. The Opteron's launch MSRP was $988; no launch MSRP is recorded for the i5-8269U. The Opteron's part number is OS6278WKTGGGU, with no part number listed for the Intel chip. Neither processor has an unlocked multiplier.

Head-to-Head Benchmarks

Every recorded test favors the Opteron, and the deltas cluster tightly, which makes the walk-through straightforward.

Cinebench R15 multi-core: 623 for the Opteron versus 609 for the i5-8269U, a 2.3 percent win. Single-core: 87 versus 85, 2.4 percent. Cinebench R20 multi-core: 2598 versus 2538, 2.4 percent. Single-core: 366 versus 358, 2.2 percent. Cinebench R23 multi-core: 6187 versus 6044, 2.4 percent. Single-core: 873 versus 853, 2.3 percent. Final tally: six wins for the Opteron, zero for the i5-8269U.

Two observations stand out. First, the spread across all six tests spans just 0.2 percentage points, from 2.2 to 2.4 percent. The Opteron's advantage does not grow in multi-core tests, which is remarkable given its 16 cores against 4. Second, the i5-8269U achieves this parity while boosting to 4.20 GHz on a 28 W envelope, indicating that its per-thread throughput compensates almost entirely for the core-count deficit.

Placement against the wider database confirms the picture. The Opteron's average score of 1789 and 42nd percentile ranking, with nearest rivals such as the Ryzen 3 3200GE and Xeon E5-4610 v3, matches almost exactly the i5-8269U's 1748 average, 41st percentile, and rivals like the Ryzen 3 PRO 3200GE and Core i5-6600. For buyers choosing on performance alone, these two processors are functionally equivalent in the recorded data; the deciding factors are platform (G34/DDR3/ECC versus BGA 1356/DDR4/integrated graphics), power draw, and the Opteron's end-of-life status.