AMD Opteron 3380 vs Intel Pentium Gold G6505 Comparison

The Intel Pentium Gold G6505 and AMD Opteron 3380 present a fascinating generational clash, pitting a modern 2-core desktop chip against an 8-core server processor from a decade prior. Benchmark results show the Pentium Gold G6505 winning all six head-to-head Cinebench comparisons, yet the margins are remarkably thin. In Cinebench R15 multicore, the Intel chip scores 374 against the Opteron’s 373, a 0.3% edge. The single-core R15 test is a dead heat at 52 points each. The pattern holds in R20, where the G6505 leads 1560 to 1555 in multicore (0.3%) and 220 to 219 in single-core (0.5%). The largest delta appears in R23 single-core, with the Intel chip winning 524 to 522 (0.4%). The Opteron’s eight physical cores cannot overcome the Pentium’s higher clock speed in these lightly-threaded and moderately-threaded workloads.

Head-to-Head Benchmarks

The data reveals a consistent, if narrow, victory for the Intel Pentium Gold G6505 across every Cinebench iteration. The G6505 wins all six recorded head-to-head benchmarks, though the largest margin is a mere 0.5%. In Cinebench R20 single-core, the Pentium Gold scores 220 versus the Opteron’s 219, a 0.5% advantage that represents the biggest performance gap in the entire comparison. The multicore results are similarly tight: R15 shows 374 vs 373 (0.3%), R20 shows 1560 vs 1555 (0.3%), and R23 shows 3715 vs 3704 (0.3%). Single-core R23 is close behind at 524 vs 522 (0.4%).

These results are notable because the Opteron 3380 has four times the physical cores (8 vs 2) and slightly more threads (8 vs 4). Yet the Pentium Gold’s 4.20 GHz base clock, compared to the Opteron’s 2.60 GHz base and 3.60 GHz boost, appears to compensate fully for the core deficit in these workloads. The average benchmark scores reinforce this picture: the Pentium Gold G6505 sits at 1074, placing it in the 30th percentile of all CPUs, while the Opteron 3380 averages 1071, good for the 29th percentile. The nearest rivals for the Intel chip include the Intel Core i5-2310 (deltaPct 0.1) and the AMD Athlon X4 880K (deltaPct 0.2), while the Opteron’s closest competitor is the same Athlon X4 880K with a deltaPct of 0.0. Essentially, these two processors operate in the same performance tier, with the Intel part holding a razor-thin but consistent edge.

FAQ

Q: Which processor wins in multicore performance?

A: The Intel Pentium Gold G6505 wins every multicore benchmark. It scores 374 vs 373 in Cinebench R15, 1560 vs 1555 in R20, and 3715 vs 3704 in R23, with each margin at 0.3%.

Q: Is there any benchmark where the AMD Opteron 3380 takes the lead?

A: No. The data shows the Opteron 3380 loses all six head-to-head comparisons. Its best result is a tie in Cinebench R15 single-core, where both chips score 52 points.

Q: How do their overall average benchmark scores compare?

A: The Pentium Gold G6505 averages 1074 points, while the Opteron 3380 averages 1071 points. The Intel chip ranks in the 30th percentile of all CPUs, one percentile higher than the Opteron’s 29th.

Q: What are the closest rival CPUs for each of these processors?

A: For the Pentium Gold G6505, the nearest rival is the Intel Core i5-2310 with an average score of 1073 and a deltaPct of 0.1. For the Opteron 3380, the closest is the AMD Athlon X4 880K, which matches its 1071 average with a deltaPct of 0.0.

Q: How significant is the single-core performance difference?

A: The largest single-core delta is 0.5% in Cinebench R20 (220 vs 219). The R15 single-core test is an exact tie at 52 points, and R23 single-core shows the Intel chip ahead by 0.4% (524 vs 522).

Q: Given the core count disparity, why is the Opteron not faster in multicore tests?

A: The Opteron’s eight cores run at a much lower clock speed (2.60 GHz base, 3.60 GHz boost) compared to the Pentium Gold’s 4.20 GHz base clock. The benchmark data indicates that the higher clock speed on the Intel chip offsets the Opteron’s core advantage in these particular Cinebench workloads.

Architecture Differences

The architectural gap between these two processors is substantial, reflecting their different release eras and target markets. The Intel Pentium Gold G6505 is built on the Comet Lake architecture, specifically Comet Lake-R, using Intel’s 14 nm process node. It is a desktop part with 2 cores and 4 threads, featuring a base clock of 4.20 GHz with no boost clock listed. Its cache hierarchy is modest: 64 KB of L1 per core, 256 KB of L2 per core, and 4 MB of shared L3 cache. The chip supports DDR4 memory over a dual-channel bus with a theoretical bandwidth of 42.7 GB/s, and it does not support ECC memory. It includes integrated UHD Graphics 630 and provides PCIe Gen 3 with 16 lanes from the CPU.

The AMD Opteron 3380, by contrast, is a server/workstation part built on the K10 architecture with the codename Delhi. It uses a 32 nm process node and packs 8 cores with 8 threads, running at a 2.60 GHz base clock and 3.60 GHz boost clock. Its transistor count is listed at 1,200 million on a 315 mm² die. The cache configuration is substantially larger: 384 KB of L1, 8 MB of L2, and 8 MB of shared L3. It uses DDR3 memory over a dual-channel bus with 29.9 GB/s bandwidth, also without ECC support. The Opteron relies on PCIe Gen 2 and has no integrated graphics of its own, instead depending on a chipset feature on certain motherboards.

The process node difference is stark: 14 nm for Intel versus 32 nm for AMD. This generational gap explains why the Pentium Gold achieves nearly double the base clock speed of the Opteron. The Opteron’s larger cache (8 MB L3 vs 4 MB L3) and higher core count suggest it was designed for throughput, but the older architecture and slower clocks limit its effectiveness in the benchmarked workloads. The memory bandwidth also favors the Intel chip significantly, with 42.7 GB/s versus 29.9 GB/s for the AMD part.

Specification Differences

The two processors differ on nearly every major specification field. The Intel Pentium Gold G6505 offers 2 cores and 4 threads, while the AMD Opteron 3380 provides 8 cores and 8 threads. The base clock differs dramatically: 4.20 GHz for the Intel chip versus 2.60 GHz for the AMD chip. The Opteron adds a boost clock of 3.60 GHz, while the Pentium Gold lists no boost clock. Thermal design power favors the Intel part at 58 W, compared to 65 W for the Opteron.

The sockets are incompatible: Intel Socket 1200 for the Pentium Gold versus AMD Socket AM3+ for the Opteron. The process node is 14 nm for Intel and 32 nm for AMD. The cache configuration diverges significantly, with the Opteron featuring 384 KB L1, 8 MB L2, and 8 MB shared L3, versus the Pentium Gold’s 64 KB L1 per core, 256 KB L2 per core, and 4 MB shared L3. Memory support differs by generation: DDR4 for Intel, DDR3 for AMD. Memory bandwidth is higher on the Intel chip at 42.7 GB/s versus 29.9 GB/s.

The integrated graphics situation is another differentiator: the Pentium Gold includes UHD Graphics 630, while the Opteron relies on a chipset feature on certain motherboards. PCIe support is Gen 3 with 16 lanes for Intel, versus Gen 2 for AMD. The market segments are desktop versus server/workstation. The release dates are 2021-03-15 for the Intel part and 2012-12-03 for the AMD part. The Pentium Gold is listed as Active in production, while the Opteron is End-of-life. The launch MSRP for the Pentium Gold is $75; the Opteron launched at $229. The Intel part has a part number of SRH3V, while the AMD part is OS3380OLW8KHK. Neither chip has an unlocked multiplier.

Where Each One Wins

The Intel Pentium Gold G6505 wins all six head-to-head benchmarks, making it the clear choice in every tested Cinebench workload. Its victories are narrow but consistent, with a 0.3% edge in R15 multicore, a 0.5% edge in R20 single-core, and a 0.4% edge in R23 single-core. This suggests the Pentium Gold is the better option for users running Cinebench-style rendering tasks, whether single-threaded or multi-threaded. Its higher base clock of 4.20 GHz, modern 14 nm process, and faster DDR4 memory bandwidth (42.7 GB/s vs 29.9 GB/s) all contribute to its benchmark advantage. The integrated UHD Graphics 630 adds versatility for desktop systems that do not require a discrete GPU.

The AMD Opteron 3380, despite losing every benchmark, still holds theoretical advantages that could matter in specific scenarios. Its 8 cores and 8 threads, combined with a much larger cache pool (8 MB L2 and 8 MB L3), could potentially benefit workloads that are heavily cache-dependent or scale well beyond four threads. However, the benchmark data does not show this advantage materializing in any Cinebench test. The Opteron’s server/workstation market segment and end-of-life production status suggest it is not a viable choice for new systems. Its DDR3 memory support and PCIe Gen 2 connectivity are legacy features. The lower base clock of 2.60 GHz, even with a 3.60 GHz boost, cannot overcome the Pentium Gold’s clock speed advantage in these tests.

For a modern desktop build, the Pentium Gold G6505 is the practical choice. It offers active production status, a 2021 release date, and wins every measured benchmark. The Opteron 3380, with its 2012 release and end-of-life status, is primarily of historical interest. Its 8-core design might appeal to someone seeking a low-cost multi-core server CPU, but the benchmark data shows it performs no better than the Pentium Gold despite having four times the cores. The Opteron’s launch MSRP of $229 was higher than the Pentium Gold’s $75, yet the newer chip delivers superior benchmark results across the board. The data is unambiguous: the Intel part is the winner in every tested workload, even if the margins are small.