AMD Opteron 4226 vs Intel Core i7-2920XM Comparison

The Intel Core i7-2920XM and AMD Opteron 4226 are statistical twins in the aggregate benchmark database, both posting an identical average score of 995 and occupying the same 27th percentile among all CPUs. However, this parity in overall standing masks a decisive head-to-head result: the Intel part wins all five direct comparisons, with margins that are remarkably consistent across every workload tested. The data shows a clear pattern of Intel superiority in every measurable benchmark, despite the Opteron’s higher core count and base clock.

Head-to-Head Benchmarks

The most striking finding is the uniformity of Intel’s victory margin. Across five benchmark comparisons, the Intel Core i7-2920XM leads by margins ranging from 21.1% to 21.3% — a narrow band that suggests the performance gap is structural rather than workload-specific. In Cinebench R15 multi-core, the Intel scores 353 against the Opteron’s 291, a 21.3% advantage. The same exact percentage appears in Cinebench R20 multi-core, where Intel posts 1471 versus AMD’s 1213. This consistency indicates that the Intel architecture extracts more work per clock cycle across rendering tasks, regardless of core count disparity.

The single-core results reinforce the same conclusion. In Cinebench R20 single-core, Intel scores 207 against AMD’s 171, a 21.1% lead. Cinebench R23 single-core shows Intel at 494 versus AMD’s 408, again 21.1% ahead. The fact that Intel wins single-threaded tests by nearly the same margin as multi-threaded tests is telling: the AMD Opteron 4226 cannot compensate for its clock speed advantage (2.70 GHz base versus 2.50 GHz) or its two additional physical cores, because the Intel’s per-thread efficiency is overwhelmingly superior.

The largest absolute gap appears in Cinebench R23 multi-core, where Intel scores 3504 versus AMD’s 2890 — a difference of 614 points. This is the most demanding workload in the comparison, and it amplifies the architectural gap. Notably, the Intel also has a Cinebench R15 single-core score of 52, for which the AMD has no direct comparison in the head-to-head data, but the pattern from other single-core tests leaves little doubt about the outcome.

Where Each One Wins

The Intel Core i7-2920XM wins every category where data exists. There are no benchmark categories where the AMD Opteron 4226 emerges victorious. This is a clean sweep, with the Intel winning 5 of 5 head-to-head comparisons. The Intel’s wins span multi-core rendering (Cinebench R15, R20, R23) and single-core rendering (Cinebench R20, R23), demonstrating broad applicability across both parallel and serial workloads.

For multi-threaded workloads, the Intel’s 4 cores with 8 threads outperform the Opteron’s 6 physical cores with 6 threads. The Intel’s hyper-threading appears to more than compensate for the Opteron’s raw core count advantage. The data shows a 21.3% lead in both Cinebench R15 and R20 multi-core tests, and a 21.2% lead in R23. The Opteron’s lack of simultaneous multithreading leaves its 6 cores unable to match the Intel’s 8 logical processors.

For single-threaded workloads, the Intel’s advantage is equally pronounced. Despite the Opteron’s higher base clock (2.70 GHz versus 2.50 GHz), the Intel’s boost clock of 3.50 GHz versus 3.10 GHz helps, but clock speed alone cannot explain a 21.1% gap. The Sandy Bridge architecture simply delivers more instructions per clock than the Bulldozer design in these tests. The Opteron’s higher base clock does not translate into any benchmark advantage.

FAQ

Q: Which CPU has the higher average benchmark score?

A: Both CPUs have identical average benchmark scores of 995, placing them both at the 27th percentile among all CPUs.

Q: How much faster is the Intel in multi-core Cinebench R23?

A: The Intel Core i7-2920XM scores 3504 versus the AMD Opteron 4226’s 2890, a 21.2% advantage.

Q: Does the AMD Opteron’s 6-core configuration beat the Intel’s 4-core design?

A: No. The Intel wins all multi-core tests despite having fewer physical cores. In Cinebench R15 multi-core, Intel scores 353 versus AMD’s 291, a 21.3% lead.

Q: What is the single-core performance gap?

A: In Cinebench R23 single-core, Intel scores 494 versus AMD’s 408, a 21.1% lead. The same margin appears in Cinebench R20 single-core (207 versus 171).

Q: Are there any benchmarks where the AMD wins?

A: No. The head-to-head data shows the Intel winning 5 out of 5 comparisons, with the AMD winning 0.

Q: How do these CPUs compare to other processors?

A: Both sit at the 27th percentile overall. Their nearest rivals include the Intel Core i7-2635QM (avg score 995, 0% delta), the Intel Core i3-8130U (avg score 994, 0.1% delta), and the Intel Xeon W3565 (avg score 993, 0.2% delta).

Specification Differences

The two processors differ fundamentally in core and thread configuration. The Intel Core i7-2920XM has 4 cores and 8 threads, while the AMD Opteron 4226 has 6 cores and 6 threads. Clock speeds also differ: Intel runs at 2.50 GHz base and 3.50 GHz boost, while AMD runs at 2.70 GHz base and 3.10 GHz boost. The AMD has a higher base clock but a significantly lower boost clock.

Power consumption differs substantially. The Intel has a 55W TDP, while the AMD draws 95W — a 40W difference that makes the Intel far more power-efficient per unit of performance. The sockets are incompatible: Intel uses Socket G2 (988B) for mobile platforms, while AMD uses Socket C32 for server/workstation systems. The Intel is a mobile part, while the AMD is a server/workstation part.

Memory support is identical in type and bandwidth — both support DDR3 with dual-channel memory and 25.6 GB/s bandwidth. However, the AMD supports ECC memory while the Intel does not. The Intel includes integrated graphics (Intel HD 3000), while the AMD has none. The Intel has an unlocked multiplier, while the AMD does not. The Intel supports PCIe Gen 2 with 16 lanes (CPU only), while the AMD supports PCIe Gen 2 without a lane count specified.

The Intel launched with an MSRP of $1096, while the AMD launched with an MSRP of $125. The Intel also has a different cache layout: 64 KB L1 per core and 256 KB L2 per core, versus the AMD’s 288 KB total L1 and 6 MB total L2. Both share 8 MB of L3 cache.

Architecture Differences

The Intel Core i7-2920XM is built on the Sandy Bridge architecture, codenamed Sandy Bridge, and belongs to the Core i7 Extreme generation. The AMD Opteron 4226 uses the Bulldozer architecture, codenamed Valencia, and belongs to the Opteron 4000 series. Both are manufactured on a 32 nm process node, but by different foundries: Intel fabricates its chip in-house, while AMD uses GlobalFoundries.

The transistor counts are similar, with Intel at 1,160 million and AMD at 1,200 million. However, the die sizes differ dramatically: Intel’s die is 216 mm², while AMD’s is 315 mm² — nearly 50% larger. This suggests the AMD design is less dense and potentially less efficient in its use of silicon.

Cache architecture differs significantly. The Intel uses a per-core L1 of 64 KB and per-core L2 of 256 KB, while the AMD uses a combined 288 KB L1 and 6 MB L2 across the entire chip. Both have 8 MB of shared L3 cache. The Intel’s threading model (8 threads on 4 cores) versus the AMD’s 6 threads on 6 cores reflects fundamentally different design philosophies: Intel relies on simultaneous multithreading, while AMD uses more physical cores without SMT.

The Intel includes an integrated GPU (Intel HD 3000), making it a complete system-on-chip for mobile use. The AMD has no integrated graphics, consistent with its server/workstation focus. The Intel’s multiplier is unlocked for overclocking, a feature absent on the AMD. The AMD’s ECC memory support is a server-class feature that the Intel lacks, but this does not translate into any performance advantage in the benchmark data.

The Verdict

The benchmark data is unambiguous: the Intel Core i7-2920XM is the superior processor in every measured dimension. It wins all five head-to-head comparisons with margins consistently above 21%, and it does so while drawing significantly less power (55W versus 95W). The AMD Opteron 4226 offers no performance advantage in any test, despite having two additional physical cores and a higher base clock.

For users prioritizing multi-threaded rendering performance, the Intel delivers 21.3% higher scores in Cinebench R15 and R20, and 21.2% higher in R23. For single-threaded tasks, the Intel leads by 21.1% in both R20 and R23 tests. The only areas where the AMD holds any technical edge are ECC memory support and a lower launch MSRP ($125 versus $1096), but neither translates into benchmark performance.

The Intel’s higher launch MSRP reflects its mobile Extreme Edition positioning, while the AMD’s lower price targets server/workstation budgets. However, given the Intel’s consistent 21% performance lead and its substantially lower power draw, the data suggests the Intel is the stronger choice for any workload captured in these benchmarks. The AMD’s larger die (315 mm² versus 216 mm²) and higher transistor count do not yield any performance benefit.

The verdict is straightforward: choose the Intel Core i7-2920XM for any application where rendering or single-threaded performance matters. The AMD Opteron 4226 only makes sense if ECC memory support is a hard requirement, as it is the sole functional advantage the AMD holds over the Intel in this comparison.