CPU Comparison

The Verdict

The data is unambiguous. The Intel Core i5-3450 wins every single head-to-head benchmark against the AMD Opteron 4334, taking all five comparisons in the Cinebench suite. The Intel part leads by a nearly identical margin across every test, 14.5% in multi-core workloads and 14.6% in single-core workloads. The Opteron 4334, despite having six cores to the i5's four, cannot overcome the architectural efficiency gap.

The average benchmark score tells the same story at a broader level: the i5-3450 sits at 1166, while the Opteron 4334 lands at 1155, a difference of roughly 1%. Both processors occupy the 33rd percentile of all CPUs, meaning they are statistically peers in overall performance distribution, but the i5-3450 edges ahead in every direct comparison.

For a desktop user, the i5-3450 is the clear choice, it offers integrated graphics, a lower 77W TDP, and superior Cinebench scores. The Opteron 4334 is a server/workstation part with a higher 95W TDP, no integrated graphics, and slower benchmark results. Unless the specific Socket C32 platform or six physical cores are a hard requirement, the data favors Intel. The verdict is straightforward: the i5-3450 wins on performance, efficiency, and features.

Where Each One Wins

Looking strictly at the benchmark results, the Intel Core i5-3450 wins in every category that was tested. The head-to-head data shows five wins for Intel and zero for AMD. The largest margin is in single-core performance, where the i5-3450 leads by 14.6% in both Cinebench R20 and R23. The multi-core advantage is nearly identical at 14.5% across Cinebench R15, R20, and R23.

The Opteron 4334's only theoretical advantage comes from its core count, six cores versus four, but this does not translate into any benchmark victory. The data shows that AMD's six-core Piledriver design cannot outperform Intel's four-core Ivy Bridge part in the tested workloads. The Opteron 4334 does have a larger L3 cache at 8 MB shared versus 6 MB shared, and more total L2 cache at 6 MB versus 1 MB (256 KB per core across four cores), but these capacity advantages do not produce wins.

For use-case analysis, the i5-3450 is positioned for desktop workloads, evidenced by its integrated Intel HD 2500 graphics and dual-channel memory support. The Opteron 4334 targets server/workstation deployments with its Socket C32 platform. However, in the benchmarks measured, the desktop part outperforms the server part across the board. The data does not reveal any workload where the Opteron wins.

Architecture Differences

The architectural gap between these two processors is substantial. The Intel Core i5-3450 uses the Ivy Bridge architecture on a 22 nm process node, manufactured by Intel with 1,400 million transistors on a 160 mm² die. The AMD Opteron 4334 uses the Piledriver architecture (codename Seoul) on a larger 32 nm process node, with 1,200 million transistors spread across a 315 mm² die. The die size difference is stark: AMD's chip is nearly twice as large physically, yet has fewer transistors.

The core configurations differ significantly. The i5-3450 has 4 cores and 4 threads, while the Opteron 4334 has 6 cores and 6 threads. Both have a base clock of 3.10 GHz and a boost clock of 3.50 GHz, so clock speeds are identical. The TDP gap is notable: the i5-3450 draws 77W, while the Opteron 4334 draws 95W. This means Intel delivers better performance at a lower thermal envelope.

Cache hierarchies diverge as well. The i5-3450 has 64 KB of L1 cache per core, 256 KB of L2 per core, and 6 MB of shared L3. The Opteron 4334 has 288 KB of L1 total, 6 MB of L2, and 8 MB of shared L3. The AMD part has more L3 cache, but the Intel part's per-core L2 allocation is smaller yet evidently more efficient.

The i5-3450 supports DDR3 memory on a dual-channel bus with 25.6 GB/s of bandwidth, and it has PCIe Gen 3 with 16 lanes from the CPU. The Opteron 4334 supports DDR3 but has no listed memory bus, bandwidth, or PCIe data in the benchmark database. The i5-3450 also includes integrated Intel HD 2500 graphics, while the Opteron 4334 has no integrated graphics. The socket difference is fundamental: Intel Socket 1155 versus AMD Socket C32.

The i5-3450 launched on 2012-04-28 with a launch MSRP of $174, while the Opteron 4334 launched on 2012-12-03. The Intel part is marked end-of-life, and neither has an unlocked multiplier. The Opteron 4334 does not support ECC memory, which is notable for a server part.

FAQ

Q: Which processor has more cores?

A: The AMD Opteron 4334 has 6 cores and 6 threads, while the Intel Core i5-3450 has 4 cores and 4 threads. Despite having 50% more cores, the Opteron loses all multi-core benchmarks.

Q: What is the performance difference in multi-core workloads?

A: The Intel Core i5-3450 leads by 14.5% in Cinebench R15, R20, and R23 multi-core tests. Scores are 387 versus 338 in R15, 1613 versus 1409 in R20, and 3842 versus 3356 in R23.

Q: How much faster is the Intel part in single-core tests?

A: The i5-3450 wins single-core tests by 14.6%. In Cinebench R20, it scores 227 versus 198, and in R23, it scores 542 versus 473.

Q: Do these processors have the same clock speeds?

A: Yes, both have a base clock of 3.10 GHz and a boost clock of 3.50 GHz. The performance difference comes from architecture, not clock speed.

Q: Which processor has integrated graphics?

A: Only the Intel Core i5-3450 has integrated graphics (Intel HD 2500). The AMD Opteron 4334 has no integrated graphics, which is typical for a server/workstation part.

Q: What is the average benchmark score for each?

A: The Intel Core i5-3450 has an average benchmark score of 1166, while the AMD Opteron 4334 has an average of 1155. Both are in the 33rd percentile of all CPUs.

Head-to-Head Benchmarks

The head-to-head benchmark data shows a remarkably consistent pattern: the Intel Core i5-3450 wins every test by nearly the same margin. In Cinebench R15 multi-core, the i5-3450 scores 387 against the Opteron's 338, a 14.5% advantage. This is the smallest absolute spread in points but the same relative gap as the other multi-core tests.

Cinebench R20 multi-core shows the i5-3450 at 1613 versus 1409 for the Opteron, again a 14.5% lead. The single-core R20 test has a slightly larger margin: 227 versus 198, which is a 14.6% difference. This pattern repeats in Cinebench R23: multi-core scores are 3842 for Intel and 3356 for AMD (14.5% lead), while single-core scores are 542 versus 473 (14.6% lead).

The consistency of these margins is striking. A 14.5% multi-core advantage and a 14.6% single-core advantage across multiple generations of the Cinebench test suggests a fundamental architectural efficiency difference rather than a workload-specific quirk. The Intel part is uniformly faster regardless of test version or thread count.

What makes this more impressive is the core count disparity. The Opteron 4334 has 6 cores to the i5-3450's 4 cores, yet it still loses multi-core tests by 14.5%. This means the AMD part's additional cores are not only failing to help, they are actively dragging performance down relative to Intel's design. The Piledriver architecture, running on a 32 nm process with a 95W TDP, cannot match the efficiency of Ivy Bridge on a 22 nm process with a 77W TDP.

The single-core results are particularly telling. With identical 3.10 GHz base and 3.50 GHz boost clocks, the i5-3450 still manages a 14.6% advantage. This isolates the architectural efficiency: Intel's Ivy Bridge core simply executes more work per clock cycle than AMD's Piledriver core. The die size difference (160 mm² versus 315 mm²) and transistor count (1,400 million versus 1,200 million) further underscore that Intel achieves more with a denser, more compact design.

The broader benchmark picture reinforces the head-to-head results. The i5-3450 has additional Geekbench scores not present for the Opteron: 1985 multi-core and 681 single-core. The Opteron 4334 lacks Geekbench data entirely, so those tests cannot be compared. However, the Cinebench suite alone provides five data points, and all five favor Intel. The average benchmark scores (1166 for Intel, 1155 for AMD) confirm that this is not a fluke of any single test, the i5-3450 is simply the better-performing processor across the board.