AMD Opteron 4274 HE vs Intel Core i7-2700K Comparison

The AMD Opteron 4274 HE and Intel Core i7-2700K are two end-of-life processors from 2011 that occupy nearly identical positions in the aggregate benchmark hierarchy, with average scores of 1420 and 1419 respectively. The Opteron holds a razor-thin 0.1% lead in average score, and both processors sit at the 37th percentile of all CPUs tested, placing them as direct peers in overall performance despite their radically different design philosophies.

Head-to-Head Benchmarks

The head-to-head benchmark data shows a clean sweep for the AMD Opteron 4274 HE across all six Cinebench tests, though the margins are remarkably consistent and narrow. In Cinebench R15 multicore, the Opteron scores 494 against the Core i7-2700K’s 486, a 1.6% advantage. The single-core R15 result follows the same pattern: 69 versus 68, a 1.5% lead for the AMD part.

Moving to Cinebench R20, the multicore test shows the Opteron at 2061 versus 2029 for the Intel chip, again a 1.6% margin. The single-core R20 result is 291 against 286, which represents the largest relative gap in the entire comparison at 1.7%. Cinebench R23 continues the trend with the Opteron scoring 4909 in multicore against 4833, and 693 in single-core against 682, both representing 1.6% advantages.

The data reveals a notable pattern: the Opteron’s advantage is virtually identical whether the workload is single-threaded or multi-threaded, ranging only between 1.5% and 1.7% across all tests. This consistency suggests the performance delta stems from fundamental architectural efficiency rather than core count scaling. The Intel processor, despite having half the physical cores, manages to stay within striking distance in every multicore test due to its superior per-core throughput.

Architecture Differences

The architectural divide between these two processors is substantial. The AMD Opteron 4274 HE is built on the Bulldozer architecture with the Valencia codename, part of the Opteron 4000 series, while the Intel Core i7-2700K uses the Sandy Bridge architecture. Both are fabricated on a 32 nm process node, but AMD uses GlobalFoundries as the foundry while Intel manufactures its own silicon.

The core configurations could hardly be more different. The Opteron packs 8 physical cores with 8 threads, while the Core i7-2700K has 4 cores but 8 threads through Hyper-Threading. This means the Opteron provides 8 native threads compared to the Intel’s 4 physical plus 4 logical threads. The AMD chip has a base clock of 2.50 GHz and boost clock of 3.50 GHz, while the Intel part runs at a higher 3.50 GHz base and 3.90 GHz boost.

Cache hierarchies reflect different design strategies. The Opteron has 384 KB of L1 cache, 8 MB of L2, and 8 MB of shared L3. The Core i7-2700K specifies its caches on a per-core basis: 64 KB L1 per core, 256 KB L2 per core, and 8 MB of shared L3. The transistor counts are similar at 1,200 million for AMD and 1,160 million for Intel, but the die sizes differ significantly at 315 mm² versus 216 mm², indicating the Bulldozer design is less transistor-dense.

Memory support shows another split: both use dual-channel DDR3, but the Opteron achieves 25.6 GB/s memory bandwidth versus 21.3 GB/s for the Intel chip. The Opteron supports ECC memory while the Core i7-2700K does not. Both use PCIe Gen 2, though the Intel part specifies 16 lanes CPU-only. The Opteron has no integrated graphics, while the Core i7-2700K includes Intel HD 3000.

Where Each One Wins

The benchmark data indicates the AMD Opteron 4274 HE wins all six head-to-head comparisons, but the real-world interpretation requires nuance. The Opteron’s 6-0 win record in Cinebench tests shows it has a consistent, if modest, performance advantage in rendering workloads. The largest single margin is 1.7% in Cinebench R20 single-core, which is the only test where the gap exceeds 1.6%.

The Intel Core i7-2700K’s strengths do not appear in the head-to-head Cinebench results, but the processor does have additional benchmark data that the Opteron lacks. The Geekbench results for the Core i7-2700K show a multicore score of 2294 and single-core score of 672, providing a data point for applications that use the Geekbench workload suite.

From a feature perspective, the Intel part has clear advantages in specific use cases. The integrated Intel HD 3000 graphics means systems built around the Core i7-2700K do not require a discrete GPU for basic display output. The unlocked multiplier on the Intel processor enables overclocking, a feature the Opteron lacks entirely. The lower launch MSRP of $332 versus $377 for the Opteron also positions the Intel part differently, though both processors have been end-of-life for an extended period.

The Opteron’s ECC memory support and lower 65 W TDP versus the Intel’s 95 W make it suited for reliability-focused and power-conscious server environments. The higher memory bandwidth of 25.6 GB/s versus 21.3 GB/s gives the Opteron a theoretical advantage in memory-intensive server workloads.

FAQ

Q: Which processor has more physical cores?

A: The AMD Opteron 4274 HE has 8 physical cores with 8 threads, while the Intel Core i7-2700K has 4 physical cores with 8 threads through Hyper-Threading.

Q: What is the average benchmark score difference between these two CPUs?

A: The AMD Opteron 4274 HE has an average benchmark score of 1420, while the Intel Core i7-2700K scores 1419, a 0.1% difference in favor of the Opteron.

Q: Does the Intel Core i7-2700K support ECC memory?

A: No, the Intel Core i7-2700K does not support ECC memory. ECC memory support is exclusive to the AMD Opteron 4274 HE in this comparison.

Q: Which processor includes integrated graphics?

A: The Intel Core i7-2700K includes Intel HD 3000 integrated graphics, while the AMD Opteron 4274 HE has no integrated graphics.

Q: How do the boost clocks compare?

A: The AMD Opteron 4274 HE has a boost clock of 3.50 GHz, while the Intel Core i7-2700K boosts to 3.90 GHz, giving the Intel part a 400 MHz higher boost frequency.

Q: What is the TDP difference between the two processors?

A: The AMD Opteron 4274 HE has a TDP of 65 W, while the Intel Core i7-2700K has a TDP of 95 W, making the Opteron significantly more power-efficient on paper.

Specification Differences

The two processors differ across nearly every specification category. The AMD Opteron 4274 HE uses the AMD Socket C32, while the Intel Core i7-2700K uses Intel Socket 1155. The Opteron is part of the Opteron 4000 series with the Valencia codename, whereas the Core i7-2700K is from the Core i7 Sandy Bridge generation.

Core and thread counts differ substantially: 8 cores and 8 threads for AMD versus 4 cores and 8 threads for Intel. Clock speeds also diverge, with the Opteron running at 2.50 GHz base and 3.50 GHz boost, while the Core i7-2700K runs at 3.50 GHz base and 3.90 GHz boost. The TDP ratings are 65 W for the Opteron and 95 W for the Intel processor.

Cache configurations are expressed differently: the Opteron has 384 KB L1, 8 MB L2, and 8 MB shared L3, while the Core i7-2700K specifies 64 KB L1 per core and 256 KB L2 per core, with 8 MB shared L3. Both use 32 nm process nodes, but the Opteron uses GlobalFoundries while Intel manufactures its own silicon. The transistor counts are 1,200 million for AMD and 1,160 million for Intel, with die sizes of 315 mm² and 216 mm² respectively.

Memory bandwidth favors the Opteron at 25.6 GB/s versus 21.3 GB/s for the Core i7-2700K. ECC memory support is present only on the AMD part. The Opteron has no integrated graphics, while the Intel chip includes Intel HD 3000. The market segments differ: the Opteron targets Server/Workstation while the Core i7-2700K targets Desktop. The Opteron has a locked multiplier, while the Core i7-2700K has an unlocked multiplier. Launch MSRPs were $377 for the Opteron and $332 for the Core i7-2700K. The Opteron was released on 2011-11-13, while the Core i7-2700K was released on 2011-10-23.