AMD Opteron 4226 vs Intel Core i7-5600U Comparison

Head-to-Head Benchmarks

The recorded data delivers a clear, though not overwhelming, verdict in favor of the AMD Opteron 4226. Across all five head-to-head benchmark comparisons, the AMD server processor wins outright, with a consistent performance margin over the Intel Core i7-5600U.

In the Cinebench R15 multicore test, the Opteron 4226 scores 291 against the Core i7-5600U’s 255. That is a 12.4% advantage for AMD. The pattern repeats in Cinebench R20 multicore, where the Opteron posts 1213 versus Intel’s 1065, a 12.2% lead. Moving to Cinebench R23 multicore, the gap remains nearly identical: AMD scores 2890, Intel scores 2537, again a 12.2% difference. These results indicate that the Opteron’s six physical cores deliver a consistent, roughly 12% multicore throughput advantage over the Intel part’s two cores with four threads.

Single-core performance tells the same story. In Cinebench R20 single-core, the Opteron 4226 scores 171, while the Core i7-5600U scores 150, a 12.3% deficit for Intel. Cinebench R23 single-core shows 408 for AMD against 358 for Intel, a 12.3% margin. This is notable because single-core tests typically favor Intel’s architecture, yet the data shows AMD’s higher base clock and boost clock (2.70 GHz and 3.10 GHz versus 2.60 GHz and 3.20 GHz) are enough to overcome any architectural disadvantage. The Intel part’s slightly higher boost clock does not translate into a win.

The overall average benchmark score places the Opteron 4226 at 995, while the Core i7-5600U sits at 1005. That is a negligible 1% difference in aggregate, yet the head-to-head results show the Opteron winning every specific workload tested. The Intel chip’s average is pulled up by its Geekbench results, which are not part of the head-to-head set. In Geekbench multicore, the Core i7-5600U scores 1750, and in single-core it scores 917. Those scores are not compared directly against the Opteron, which lacks Geekbench entries in the database. So while the average scores are nearly identical, the five Cinebench comparisons all favor AMD.

Both processors sit at the 27th percentile of all CPUs in the database, meaning they are statistically tied in overall standing. The nearest rivals for the Core i7-5600U include the Intel Core i7-2630QM with an identical average score of 1005, the AMD FX-9830P at 1006, and the Intel Core i7-880 at 1006. For the Opteron 4226, the closest peers are the Intel Core i7-2635QM and the Intel Core i7-2920XM, both at 995, and the Intel Core i3-8130U at 994. The delta percentages among these rivals are all within 0.2%, reinforcing that both chips perform at a similar tier.

FAQ

Q: Which processor wins the most benchmark comparisons in the head-to-head data?

A: The AMD Opteron 4226 wins all five head-to-head Cinebench comparisons, covering R15 multicore, R20 multicore, R20 single-core, R23 multicore, and R23 single-core.

Q: How large is the performance gap between the two in multicore workloads?

A: The Opteron 4226 leads by 12.4% in Cinebench R15 multicore, 12.2% in R20 multicore, and 12.2% in R23 multicore, consistently hovering around a 12% advantage.

Q: Does the Intel Core i7-5600U win any single-core test?

A: No. The Opteron 4226 wins both single-core tests, leading by 12.3% in Cinebench R20 single-core and 12.3% in Cinebench R23 single-core.

Q: What are the average benchmark scores for each processor?

A: The Intel Core i7-5600U has an average benchmark score of 1005, while the AMD Opteron 4226 has an average score of 995, a difference of only 1%.

Q: Which processor supports ECC memory?

A: The AMD Opteron 4226 supports ECC memory, while the Intel Core i7-5600U does not.

Q: How do their percentile rankings compare?

A: Both processors are at the 27th percentile of all CPUs in the database, indicating they occupy the same overall performance tier.

Architecture Differences

The two processors come from fundamentally different design philosophies and manufacturing eras. The Intel Core i7-5600U is built on Intel’s Broadwell architecture, specifically the Broadwell-U codename, using a 14 nm process node. It is fabricated by Intel with 1,300 million transistors on an 82 mm² die. The AMD Opteron 4226 uses the Bulldozer architecture with the Valencia codename, manufactured by GlobalFoundries on a 32 nm process. It packs 1,200 million transistors onto a much larger 315 mm² die. The process node difference is stark: 14 nm versus 32 nm, which explains why the Intel chip achieves similar performance with far fewer resources.

Core counts differ significantly. The Intel part has 2 cores and 4 threads, relying on Hyper-Threading to double its logical processing units. The AMD Opteron has 6 cores and 6 threads, with no simultaneous multithreading. This gives AMD a raw core count advantage, but the Intel part’s newer architecture and smaller process node allow it to compete closely in average scores.

Cache hierarchies are also structured differently. The Intel Core i7-5600U has 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 4 MB of shared L3 cache. The AMD Opteron 4226 has 288 KB of total L1 cache, 6 MB of L2 cache, and 8 MB of shared L3 cache. The AMD chip offers more cache at every level, which contributes to its consistent benchmark wins.

Integrated graphics separate the two completely. The Intel chip includes Intel HD 5500 graphics, making it a complete mobile solution. The AMD Opteron has no integrated graphics at all, reflecting its server/workstation orientation. This is a critical architectural difference for anyone considering a system without a discrete GPU.

The PCIe support also differs. The Intel Core i7-5600U provides PCIe Gen 2 with 12 lanes from the CPU. The AMD Opteron 4226 provides PCIe Gen 2 without a specified lane count in the database. Both are limited to Gen 2, but Intel’s explicitly listed lane count gives it a defined expansion path.

Specification Differences

The most obvious specification gap is in thermal design power. The Intel Core i7-5600U has a TDP of 15 watts, while the AMD Opteron 4226 has a TDP of 95 watts. That is a massive difference, reflecting the Intel chip’s mobile design versus AMD’s server/workstation targeting. The Opteron consumes over six times the thermal budget.

Clock speeds are close but favor AMD overall. The Opteron 4226 has a base clock of 2.70 GHz and a boost clock of 3.10 GHz. The Core i7-5600U has a base clock of 2.60 GHz and a boost clock of 3.20 GHz. Intel’s boost clock is slightly higher, but AMD’s base clock is higher, and the benchmark data shows AMD winning every test.

Memory support is identical in type and bandwidth: both use DDR3 with a dual-channel bus and 25.6 GB/s bandwidth. However, the Opteron 4226 supports ECC memory, while the Core i7-5600U does not. That makes AMD the only choice for error-correcting memory workloads.

Sockets are entirely different. The Intel chip uses Intel BGA 1168, a soldered mobile socket. The AMD chip uses AMD Socket C32, a server socket. These are not interchangeable, and platform choice will dictate which processor can be used.

Release dates are separated by over three years. The Opteron 4226 launched on November 13, 2011. The Core i7-5600U launched on February 28, 2015. The Intel part is newer by a substantial margin, yet it still loses to the older AMD design in the tested workloads.

The launch MSRP for the Intel Core i7-5600U is $393. The launch MSRP for the AMD Opteron 4226 is $125.

Where Each One Wins

The AMD Opteron 4226 wins every single benchmark in the head-to-head comparison set. That is five out of five wins. It is faster in multicore rendering, as shown by Cinebench R15, R20, and R23 multicore tests. It is also faster in single-core tests, which is unexpected given Intel’s typical single-thread dominance. For any workload that relies on Cinebench-style rendering, whether multi-threaded or single-threaded, the Opteron delivers a consistent 12% performance advantage.

The Intel Core i7-5600U does not win any head-to-head benchmark, but it does have strengths outside that comparison set. Its Geekbench scores are strong: 1750 multicore and 917 single-core. These are not compared against the Opteron in the database, but they contribute to the Intel chip’s higher average benchmark score of 1005 versus AMD’s 995. So in Geekbench-style workloads, the Intel part appears to hold its own, though no direct comparison data exists.

Thermal efficiency is a clear win for Intel. With a 15 watt TDP, the Core i7-5600U is designed for thin-and-light laptops, where power draw and heat dissipation are critical. The Opteron’s 95 watt TDP makes it unsuitable for such environments. For mobile systems, the Intel chip is the only viable option.

The Opteron 4226 wins on ECC memory support, core count, cache size, and server-grade reliability. Six physical cores, 8 MB of L3 cache, and ECC memory make it appropriate for server and workstation tasks where data integrity and parallel throughput matter more than power efficiency.

The Verdict

The data is unambiguous in raw performance: the AMD Opteron 4226 beats the Intel Core i7-5600U in every head-to-head benchmark recorded. The margins are consistent, ranging from 12.2% to 12.4% across all five Cinebench tests. If the sole criterion is benchmark score, the Opteron is the better processor.

However, the broader context favors different choices for different use cases. For mobile computing, the Intel Core i7-5600U is the only sensible pick. Its 15 watt TDP, integrated Intel HD 5500 graphics, and BGA 1168 socket are designed for laptops. The Opteron’s 95 watt TDP and lack of integrated graphics make it impossible to use in such a form factor.

For server or workstation applications, the Opteron 4226 is the clear winner. It offers six cores, ECC memory support, and a server-class Socket C32 platform. Its benchmark wins in both multicore and single-core tests give it a performance edge in rendering and compute-heavy workloads. The 12% lead is modest but real.

The average benchmark scores tell a slightly different story. The Intel chip’s average score of 1005 is marginally higher than AMD’s 995, a 1% difference. This suggests that in a broader range of workloads, including Geekbench tests, the Intel part is competitive. But in the specific Cinebench tests used for head-to-head comparison, AMD wins every time.

Choose the Intel Core i7-5600U if you need a low-power, mobile processor with integrated graphics. Choose the AMD Opteron 4226 if you need maximum compute performance, ECC memory support, and a server-grade platform, and you can tolerate a 95 watt thermal envelope. The benchmark data favors AMD, but the platform requirements will ultimately decide which chip fits your system.