AMD Opteron 6272 vs Intel Core i7-3630QM Comparison

Opening Paragraph

The Intel Core i7-3630QM and AMD Opteron 6272 are two end-of-life processors from 2012 and 2011 respectively, yet they land within 0.1% of each other in average benchmark score (1289 vs 1288). This places both in the 35th percentile of all CPUs, making them statistical twins in overall performance despite radically different designs. The i7-3630QM is a 4-core, 8-thread mobile chip built on Intel's 22nm Ivy Bridge architecture, while the Opteron 6272 is a 16-core, 16-thread server processor built on AMD's 32nm Bulldozer architecture. The head-to-head data shows the Opteron winning all six benchmark comparisons, but the margins are narrow, ranging from 1.9% to 3.2%. This analysis breaks down where each processor wins, the architectural reasons for their similarity, and which workloads suit each chip better.

Where Each One Wins

The AMD Opteron 6272 wins every single benchmark in the head-to-head comparison, but the victories are consistently slim. In Cinebench R15 multicore, the Opteron scores 448 against the Intel's 439, a 2% advantage. The single-core R15 test shows a 3.2% edge for AMD (63 vs 61). Moving to Cinebench R20, the Opteron leads by 2% in multicore (1870 vs 1832) and 1.9% in single-core (263 vs 258). The R23 results mirror this pattern: AMD wins multicore by 2% (4454 vs 4364) and single-core by 1.9% (628 vs 616). This means the Opteron's advantage is consistent across all rendering workloads, but never exceeds 3.2%.

However, the Intel chip's wins are not in raw benchmark scores but in efficiency and platform features. The i7-3630QM has a TDP of 45 watts compared to the Opteron's 115 watts, making it dramatically more power-efficient for equivalent performance. The Intel chip also includes integrated graphics (Intel HD 4000), which the Opteron lacks entirely. For mobile or space-constrained systems, the i7-3630QM is the clear winner because it delivers nearly identical performance while consuming less than half the power and requiring no discrete GPU for basic display output.

The Opteron's wins are in memory bandwidth and capacity. It supports quad-channel DDR3 with 51.2 GB/s bandwidth versus the Intel's dual-channel 25.6 GB/s. The AMD chip also supports ECC memory, which the Intel does not. For server workloads that are memory-bandwidth sensitive or require error correction, the Opteron's 2x bandwidth advantage is significant even if CPU core performance is similar.

Architecture Differences

The architectural gap between these two processors is substantial. The Intel i7-3630QM uses Ivy Bridge, a 22nm process with 1,480 million transistors on a 160 mm² die. It has 4 cores with 8 threads via Hyper-Threading, giving it a 2:1 thread-to-core ratio. The AMD Opteron 6272 uses Bulldozer on a 32nm process with 2,400 million transistors spread across two 315 mm² dies. It has 16 cores and 16 threads, a 1:1 ratio, meaning each core handles exactly one thread.

Cache hierarchies differ fundamentally. The Intel chip has 64 KB L1 and 256 KB L2 per core, plus 6 MB of shared L3. The AMD chip has 768 KB total L1, 2 MB L2 per module, and 8 MB L3 per die. The AMD design uses modules where two cores share L2 and other resources, which explains why 16 cores only match 4 cores with Hyper-Threading in performance. Clock speeds favor Intel: 2.40 GHz base and 3.40 GHz boost versus AMD's 2.10 GHz base and 3.00 GHz boost. The Intel chip also uses PCIe Gen 3 with 16 lanes, while the Opteron uses PCIe Gen 2.

Memory support is another differentiator. Both support DDR3, but Intel uses dual-channel (25.6 GB/s) while AMD uses quad-channel (51.2 GB/s). The Opteron supports ECC memory; the Intel does not. The Intel chip has integrated HD 4000 graphics; the Opteron has none. Manufacturing also differs: Intel uses its own foundry, while AMD uses GlobalFoundries. The Opteron's launch MSRP was $523, and the i7-3630QM's was $378.

The Verdict

The data shows two processors with nearly identical average performance but completely different use cases. The AMD Opteron 6272 wins all six head-to-head benchmarks, but the margins are 2% or less in most tests. For users who need maximum multi-threaded rendering performance in a server context, the Opteron is the better choice based on its consistent wins and quad-channel memory bandwidth.

The Intel Core i7-3630QM is the better choice for mobile or power-constrained systems. Its 45W TDP versus the Opteron's 115W means it can be used in laptops, while the Opteron requires a server platform. The Intel chip also includes integrated graphics, eliminating the need for a separate GPU in basic systems. The 8 threads from 4 cores with Hyper-Threading deliver 98% of the Opteron's performance in most tests, which is remarkable given the AMD chip has 16 physical cores.

For ECC memory requirements, the Opteron is the only option since the Intel chip lacks ECC support. For PCIe Gen 3 connectivity, the Intel chip has the advantage. The percentile ranking of 35th for both confirms they are mid-range performers by modern standards, but their specific strengths matter more: the Opteron for memory-bandwidth-heavy server tasks and the Intel for efficient mobile computing.

FAQ

Q: Which processor has more cores?

A: The AMD Opteron 6272 has 16 cores and 16 threads, while the Intel Core i7-3630QM has 4 cores and 8 threads. Despite this 4x core advantage for AMD, the Intel chip nearly matches it in performance.

Q: Does the Intel i7-3630QM support ECC memory?

A: No. The Intel chip has ECC memory support set to false, while the AMD Opteron 6272 supports ECC memory. This makes the Opteron the only choice for systems requiring error-correcting memory.

Q: Which processor has higher clock speeds?

A: The Intel Core i7-3630QM has a higher base clock of 2.40 GHz and boost clock of 3.40 GHz, compared to the AMD Opteron 6272's 2.10 GHz base and 3.00 GHz boost.

Q: Why does the 16-core Opteron only slightly beat the 4-core i7?

A: The benchmark data shows the Opteron winning by 1.9% to 3.2% across all Cinebench tests. The Intel chip's higher clock speeds (2.40/3.40 vs 2.10/3.00 GHz) and Ivy Bridge architecture's efficiency compensate for the core count difference. The Opteron's Bulldozer modules share resources between cores, reducing effective throughput.

Q: Which processor has better memory bandwidth?

A: The AMD Opteron 6272 has double the memory bandwidth of the Intel chip: 51.2 GB/s via quad-channel DDR3 versus 25.6 GB/s via dual-channel DDR3.

Q: What is the performance difference in single-core tests?

A: The Opteron wins single-core tests by 1.9% to 3.2%. In Cinebench R23 single-core, AMD scores 628 vs Intel's 616 (1.9% difference). In R15 single-core, AMD scores 63 vs 61 (3.2% difference).

Head-to-Head Benchmarks

The AMD Opteron 6272 wins all six benchmark comparisons, but the margins tell a story of near-parity. The largest Intel deficit is in Cinebench R15 single-core, where the Opteron scores 63 against Intel's 61, a 3.2% gap. This is somewhat surprising given the Intel chip's higher boost clock of 3.40 GHz versus the Opteron's 3.00 GHz. The R15 multicore test shows a 2% advantage for AMD (448 vs 439), meaning the 16-core Opteron only beats the 4-core i7 by 9 points.

Cinebench R20 multicore shows the Opteron ahead by 38 points (1870 vs 1832), again a 2% margin. The single-core R20 test has AMD at 263 vs Intel's 258, a 1.9% difference. In Cinebench R23, the multicore result is 4454 vs 4364 (2% gap), and single-core is 628 vs 616 (1.9% gap). The consistency of these margins across all tests suggests the performance difference is architectural rather than workload-specific.

The narrowest margin is 1.9% in R20 single-core and R23 single-core, while the widest is 3.2% in R15 single-core. Interestingly, the multicore margins are consistently 2% across all three Cinebench versions. This pattern indicates that the Opteron's advantage scales slightly with single-threaded efficiency, not with core count. If the Opteron's 16 cores were being fully utilized, the multicore margins would likely be much larger than the single-core margins.

The Intel chip's best relative performance is in R20 single-core and R23 single-core, where it trails by only 1.9%. Its worst relative performance is in R15 single-core, trailing by 3.2%. This variance suggests the Intel chip's single-core performance is more sensitive to the specific benchmark version than the AMD chip's.

Specification Differences

The two processors differ in nearly every major specification. The Intel Core i7-3630QM has 4 cores and 8 threads, while the AMD Opteron 6272 has 16 cores and 16 threads. Clock speeds favor Intel: 2.40 GHz base and 3.40 GHz boost versus AMD's 2.10 GHz base and 3.00 GHz boost. TDP is dramatically different: 45W for Intel versus 115W for AMD.

Process technology separates them: Intel uses 22nm with 1,480 million transistors on a 160 mm² die, while AMD uses 32nm with 2,400 million transistors across two 315 mm² dies. The foundries differ as well: Intel uses its own, while AMD uses GlobalFoundries. Cache configurations are distinct: Intel has 64 KB L1 and 256 KB L2 per core with 6 MB shared L3, while AMD has 768 KB total L1, 2 MB L2 per module, and 8 MB L3 per die.

Memory support shows the biggest functional gap: Intel uses dual-channel DDR3 with 25.6 GB/s bandwidth and no ECC, while AMD uses quad-channel DDR3 with 51.2 GB/s bandwidth and ECC support. PCIe generations differ: Intel supports Gen 3 with 16 lanes, AMD uses Gen 2. The Intel chip has integrated HD 4000 graphics; the AMD chip has none. Sockets are incompatible: Intel Socket G2 (988B) versus AMD Socket G34.

Market segments reflect their designs: Intel targets mobile, AMD targets server/workstation. Release dates are close (September 2012 for Intel, November 2011 for AMD), and both are end-of-life. Launch MSRP was $378 for Intel and $523 for AMD. Neither has an unlocked multiplier. The part numbers are SR0UX for Intel and OS6272WKTGGGU for AMD.