AMD Opteron 6274 vs Intel Core i5-8365UE Comparison

Head-to-Head Benchmarks

The recorded data presents an unusually one-sided comparison. Across all six Cinebench tests, the AMD Opteron 6274 takes the win, though the margins are consistently narrow. The largest gap appears in the Cinebench R15 single-core test, where the Opteron scores 68 against the Core i5-8365UE's 66, a 3% advantage. Every other test shows the Opteron ahead by either 1.8% or 1.9%.

In multi-threaded workloads, the Opteron 6274 posts 483 in Cinebench R15, 2014 in R20, and 4796 in R23. The Intel Core i5-8365UE counters with 474, 1978, and 4710 respectively. The deltas are 1.9% for R15 and 1.8% for both R20 and R23. These are not transformative leads; they sit within the range of run-to-run variation for many systems, but the consistency across all three generations of the Cinebench suite is notable.

Single-core results follow the same pattern. The Opteron wins R15 single-core with 68 versus 66, R20 single-core with 284 versus 279, and R23 single-core with 677 versus 665. Each of the latter two tests shows a 1.8% delta. The fact that a 16-core server processor from 2011 edges out a modern low-power mobile chip in single-threaded tests is surprising given the architectural chasm between them, but the database records what it records.

Looking at the broader averages, the Opteron 6274 holds a 1387 average benchmark score across all recorded tests, while the Core i5-8365UE sits at 1362. That is a 1.8% overall difference. The Opteron also ranks slightly higher in the percentile distribution, landing at the 37th percentile versus the Intel part's 36th. Neither chip is a top-tier performer by modern standards, but the data places them in nearly the same performance class despite their wildly different designs.

The nearest rivals for each chip help contextualize these numbers. The Opteron 6274's closest competitor is the Intel Core i3-9100TE at 1386, a 0.1% difference, followed by the AMD Opteron 6238 at 1383, the Intel Core i7-3615QE at 1381, and the AMD Opteron 6366 HE at 1379. The Core i5-8365UE's nearest rival is the Intel Core i5-6500T at 1362 with a 0% delta, with the Intel Core i7-3820QM at 1366, the Intel Xeon D-1521 at 1367, and the Intel Xeon E3-1226 v3 at 1357. Both chips are clustered in a narrow performance band where a few points separate adjacent entries.

Architecture Differences

The two processors could hardly be more different in construction. The AMD Opteron 6274 belongs to the Opteron 6000 series, built on the Bulldozer architecture with the Interlagos codename. It uses a 32 nm process from GlobalFoundries, packs 2,400 million transistors across a dual-die design with each die measuring 315 mm², and fits into AMD Socket G34. The Intel Core i5-8365UE, by contrast, is a Whiskey Lake-U part built on a 14 nm process at Intel, soldered to Intel BGA 1528, and designed for mobile platforms.

Core counts diverge sharply. The Opteron offers 16 cores and 16 threads, while the Core i5 provides 4 cores and 8 threads thanks to Hyper-Threading. Clock speeds tell a different story: the Opteron runs at a 2.20 GHz base with a 3.10 GHz boost, while the Core i5 has a 1600 MHz base that jumps to 4.10 GHz boost. The Intel part relies on much higher burst frequencies to compensate for its fewer cores.

Cache hierarchies reflect the different design philosophies. The Opteron 6274 features 768 KB of shared L1 cache, 2 MB of L2 per module, and 8 MB of L3 per die. The Core i5-8365UE has 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3. These are fundamentally different organizations, with the AMD part designed around shared resources across modules and the Intel part using dedicated per-core caches with a shared last level.

Memory support also differs. The Opteron uses DDR3 memory with a quad-channel bus and a theoretical bandwidth of 51.2 GB/s, and it supports ECC memory. The Core i5-8365UE uses DDR4 with a dual-channel bus and 38.4 GB/s bandwidth, and it lacks ECC support. The AMD part's quad-channel configuration gives it a memory bandwidth advantage on paper, which matters for server workloads, while the Intel part's newer DDR4 standard offers higher per-module efficiency.

PCIe generations differ as well. The Opteron 6274 supports PCIe Gen 2, while the Core i5-8365UE supports PCIe Gen 3 with 16 lanes available from the CPU. The Intel part also integrates UHD Graphics 620, while the Opteron has no integrated graphics at all, a reasonable omission for a server/workstation part. The Opteron is marked as end-of-life, released in November 2011 with a launch MSRP of $639, while the Core i5-8365UE remains active, released in April 2019 with a launch MSRP of $297. Neither chip has an unlocked multiplier.

The Verdict

The data shows a clear, if narrow, overall winner in the AMD Opteron 6274. It wins all six head-to-head benchmarks and holds a higher average score, 1387 versus 1362. The percentile ranking agrees, placing the Opteron at 37 and the Core i5 at 36. Anyone choosing strictly on benchmark performance should look at the Opteron, but the margins are so thin that the decision cannot rest on speed alone.

The Opteron's advantages are structural. It offers 16 physical cores, quad-channel DDR3 memory with ECC support, and 51.2 GB/s of theoretical memory bandwidth. For workloads that scale across many threads and need reliable memory integrity, the recorded data suggests the Opteron is the more appropriate part. Its 115 W TDP is high, but it is a server processor designed for socketed platforms with robust cooling.

The Core i5-8365UE is a mobile part with a 15 W TDP, integrated graphics, and a 4.10 GHz boost clock. It trails in every recorded benchmark, but only by 1.8% to 3%, and it does so while consuming a fraction of the power and fitting into a BGA package intended for laptops and compact systems. For users who prioritize low power consumption, integrated graphics, and a modern active production status, the Core i5 is the rational pick despite its benchmark deficit.

The database does not record power efficiency, thermal behavior, or platform costs, so those factors cannot be weighed numerically here. Based purely on the measured Cinebench scores, the Opteron 6274 is the faster processor. Based on the architectural profile, the Core i5-8365UE is the more modern, more versatile part for mobile deployment. The choice depends on which constraints matter more, raw throughput or platform practicality.

FAQ

Q: Which processor wins in multi-core Cinebench tests?

A: The AMD Opteron 6274 wins all three multi-core tests: Cinebench R15 by 1.9%, R20 by 1.8%, and R23 by 1.8%.

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

A: The Opteron 6274 wins every single-core test. The biggest margin is 3% in Cinebench R15, while R20 and R23 both show 1.8% gaps.

Q: Do the two processors support ECC memory?

A: Yes for the AMD Opteron 6274, which supports ECC memory with DDR3. No for the Intel Core i5-8365UE, which uses DDR4 without ECC support.

Q: What are the core and thread counts for each chip?

A: The Opteron 6274 has 16 cores and 16 threads. The Core i5-8365UE has 4 cores and 8 threads.

Q: Which chip has integrated graphics?

A: The Intel Core i5-8365UE includes UHD Graphics 620. The AMD Opteron 6274 has no integrated graphics.

Q: How do their average benchmark scores compare?

A: The Opteron 6274 averages 1387 across all recorded tests, while the Core i5-8365UE averages 1362, a 1.8% difference in favor of the Opteron.

Where Each One Wins

The AMD Opteron 6274 wins in every recorded benchmark, so any workload measured by Cinebench falls into its column. That includes both single-threaded and multi-threaded rendering tasks across R15, R20, and R23. The 16-core design gives it a structural edge in heavily parallel workloads, and the quad-channel memory bus with ECC support makes it suitable for server and workstation environments where data integrity and memory bandwidth are critical. Its 51.2 GB/s memory bandwidth is significantly higher than the Core i5's 38.4 GB/s, which benefits memory-intensive applications even if those specific workloads are not in the benchmark set.

The Intel Core i5-8365UE wins in platform flexibility. It is an active, in-production mobile processor with a 15 W TDP, integrated UHD Graphics 620, and PCIe Gen 3 support. It uses DDR4 memory and fits into a BGA 1528 socket, which enables compact laptop and mini-PC designs. Its 4.10 GHz boost clock provides strong burst performance for interactive workloads, and its 6 MB of shared L3 cache is organized for low latency. While it loses every recorded benchmark, the margins are small enough that real-world differences in typical mobile usage are unlikely to be dramatic.

The choice between the two is therefore not about which is faster, the database answers that question decisively, but about which platform constraints apply. The Opteron 6274 is a server-class part with a high TDP, no integrated graphics, and an end-of-life production status. The Core i5-8365UE is a current mobile part with better platform integration. Users building a socketed server or workstation with ECC memory should favor the Opteron. Users designing a low-power, compact system with integrated graphics should favor the Core i5. The benchmark data gives the performance crown to AMD, but the system-level picture is more nuanced.