AMD Opteron 6328 vs Intel Core i5-4670T Comparison

Head-to-Head Benchmarks

The benchmark data is unambiguous: the AMD Opteron 6328 wins all six recorded head-to-head comparisons against the Intel Core i5-4670T. This is not a narrow victory in isolated tests; the AMD part leads consistently across every Cinebench iteration, with margins that remain remarkably stable regardless of workload type. The recorded wins are 6 for the Opteron and 0 for the Core i5.

Starting with the multi-core results, the Opteron 6328 posts a Cinebench R15 score of 454 against 384 for the Intel chip, a delta of 18.2%. The pattern continues in Cinebench R20, where the Opteron scores 1894 versus 1604, again an 18.1% advantage. In Cinebench R23 multi-core, the Opteron reaches 4510 while the Core i5-4670T manages 3820, a delta of 18.1%. These are nearly identical percentage leads, suggesting that the advantage scales with core count and thread count rather than being dependent on any single benchmark generation.

The single-core results tell the same story, which is notable because single-threaded performance is often where lower-clocked Intel parts can claw back ground. In Cinebench R15 single-core, the Opteron scores 64 against 54, a delta of 18.5%. In R20 single-core, the numbers are 267 and 226, a delta of 18.1%. In R23 single-core, the Opteron posts 636 versus 539, a delta of 18%. The consistency is striking: every single-core delta falls between 18% and 18.5%, and every multi-core delta falls between 18.1% and 18.2%. This indicates that the Opteron 6328 simply has a higher effective per-thread throughput in these Cinebench workloads, not just more cores to throw at the problem.

The average benchmark scores from the database reinforce this overall picture. The Opteron 6328 sits at an average score of 1304, while the Core i5-4670T sits at 1271. That is a difference of 33 points, roughly 2.6% in favor of the AMD part. Interestingly, both processors occupy the 35th percentile among all CPUs in the database, meaning that despite the Opteron winning every head-to-head test, the two parts land in the same overall performance tier when measured against the broader field.

Where Each One Wins

Given the sweep of the head-to-head results, the use-case split is straightforward: the AMD Opteron 6328 wins in every benchmark category that was recorded. There is no test in the database where the Intel Core i5-4670T takes a victory. For multi-threaded workloads like video rendering, 3D modeling, or server-side processing, the Opteron's deltas of 18.1% to 18.2% in Cinebench R15, R20, and R23 multi-core tests make it the clear choice. The 8-core, 8-thread configuration provides a substantial throughput advantage over the 4-core, 4-thread Intel part.

For single-threaded tasks, the Opteron also leads, with deltas of 18% to 18.5% across all three Cinebench versions. This is a more surprising result given the Intel chip's higher architecture efficiency per clock in other contexts, but the recorded data shows the Opteron 6328 with a base clock of 3.20 GHz and a boost clock of 3.80 GHz, compared to the Core i5-4670T's 2.30 GHz base and 3.30 GHz boost. The raw clock speed advantage appears to translate directly into higher single-core scores in these tests.

There is one area where the Intel part has functionality the AMD part lacks entirely: integrated graphics. The Core i5-4670T includes Intel HD 4600, while the Opteron 6328 has no integrated graphics at all. For systems that require a display output without a discrete GPU, the Intel part is the only option. However, this is not a performance benchmark win; it is a feature availability difference. In terms of raw compute benchmarks, the Opteron 6328 wins everywhere, with the closest margin being 18% and the widest being 18.5%.

Architecture Differences

The two processors come from fundamentally different design philosophies. The AMD Opteron 6328 belongs to the Opteron 6000 series, built on the Piledriver architecture with the codename Abu Dhabi. It is manufactured on a 32 nm process at GlobalFoundries, using 2,400 million transistors across a die size of 2x 315 mm². This is a dual-die design, which explains the large transistor count and physical footprint. The cache hierarchy reflects the module-based Piledriver layout: 384 KB of L1 cache, 2 MB of L2 cache per module, and 8 MB of L3 cache per die. With two dies, the total L3 is effectively doubled, though the database records the per-die figure rather than a total.

The Intel Core i5-4670T, in contrast, is a Haswell part built on a 22 nm process at Intel. It uses 1,400 million transistors on a single die of 177 mm². The cache layout is more conventional for a desktop processor: 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3. This gives the Intel chip a smaller total cache footprint compared to the Opteron's combined L2 and L3, but the per-core L2 and L3 allocations are more generous on a relative basis.

Memory support also diverges. The Opteron 6328 supports DDR3 memory across a quad-channel bus, delivering a memory bandwidth of 59.7 GB/s. It also supports ECC memory, which is a critical feature for server and workstation reliability. The Core i5-4670T supports DDR3 on a dual-channel bus, with no recorded memory bandwidth figure and no ECC support. The PCIe interface also differs: the Opteron uses Gen 2, while the Intel part uses Gen 3. This means the Intel chip has access to newer PCIe technology, though the Opteron's quad-channel memory bandwidth is a significant advantage for memory-intensive workloads.

The sockets are entirely different: AMD Socket G34 for the Opteron, Intel Socket 1150 for the Core i5. Neither chip has an unlocked multiplier, so overclocking headroom is limited on both sides. The Opteron 6328 is marked as end-of-life production status, while the Core i5-4670T has no recorded production status, implying it may still have some availability.

Specification Differences

The specification table shows clear divergences in nearly every field. The Opteron 6328 has 8 cores and 8 threads, while the Core i5-4670T has 4 cores and 4 threads. The base clock is 3.20 GHz for the AMD part versus 2.30 GHz for the Intel part, and the boost clock is 3.80 GHz versus 3.30 GHz. The TDP is 115 watts for the Opteron and 45 watts for the Core i5, a massive difference that reflects the Opteron's server-oriented power envelope versus the Intel chip's low-power desktop design.

The process node differs: 32 nm for AMD versus 22 nm for Intel. Transistor count is 2,400 million for the Opteron and 1,400 million for the Core i5. Die size is 2x 315 mm² for the AMD part versus 177 mm² for the Intel part. Cache configurations are different as noted above: the Opteron has 384 KB L1, 2 MB L2 per module, and 8 MB L3 per die; the Core i5 has 64 KB L1 per core, 256 KB L2 per core, and 6 MB shared L3.

Memory bus width differs: quad-channel for the Opteron, dual-channel for the Core i5. Memory bandwidth is recorded as 59.7 GB/s for the AMD part, with no figure for the Intel part. ECC memory support is present on the Opteron and absent on the Core i5. PCIe generation is Gen 2 for AMD and Gen 3 for Intel. Integrated graphics are absent on the Opteron and present as Intel HD 4600 on the Core i5. The release dates differ: November 4, 2012 for the Opteron, June 1, 2013 for the Core i5. The launch MSRP for the Opteron is $575, while no launch MSRP is recorded for the Core i5. The part numbers are OS6328WKT8GHK for the AMD chip and SR14P for the Intel chip.

FAQ

Q: Which processor has more cores and threads?

A: The AMD Opteron 6328 has 8 cores and 8 threads, while the Intel Core i5-4670T has 4 cores and 4 threads.

Q: What is the performance difference in Cinebench R23 multi-core?

A: The Opteron 6328 scores 4510, while the Core i5-4670T scores 3820, giving the AMD part an 18.1% advantage.

Q: Does the Intel Core i5-4670T support ECC memory?

A: No, ECC memory support is only present on the AMD Opteron 6328. The Intel part does not support ECC.

Q: Which processor has integrated graphics?

A: Only the Intel Core i5-4670T has integrated graphics, specifically Intel HD 4600. The AMD Opteron 6328 has no integrated graphics.

Q: What is the memory bandwidth difference?

A: The Opteron 6328 has a recorded memory bandwidth of 59.7 GB/s over a quad-channel bus. The Core i5-4670T has a dual-channel bus with no recorded bandwidth figure.

Q: Which processor has a higher boost clock?

A: The AMD Opteron 6328 has a boost clock of 3.80 GHz, compared to the Intel Core i5-4670T's boost clock of 3.30 GHz.

The Verdict

The data directs a clear conclusion: the AMD Opteron 6328 is the superior performer in every benchmark recorded. It wins all six head-to-head tests with deltas ranging from 18% to 18.5%. For any workload measured by Cinebench, whether single-core or multi-core, the Opteron 6328 delivers a consistent and substantial lead. Its 8-core, 8-thread configuration, combined with higher base and boost clocks, provides a decisive advantage over the 4-core, 4-thread Core i5-4670T.

The Intel Core i5-4670T is the better choice only in specific deployment scenarios. Its 45-watt TDP makes it far more power-efficient than the Opteron's 115-watt envelope, which is relevant for compact desktop builds or systems where thermal output is a concern. Its integrated Intel HD 4600 graphics eliminate the need for a discrete GPU, which can simplify system assembly and reduce component count. Its PCIe Gen 3 support is also a generational improvement over the Opteron's Gen 2.

However, for raw compute performance, the Opteron 6328 wins without exception. The database shows both processors in the 35th percentile overall, but head-to-head results are what matter for direct comparison, and there the AMD part dominates. Server and workstation users who prioritize multi-threaded throughput, ECC memory support, and quad-channel memory bandwidth should select the Opteron 6328. Desktop users who need integrated graphics, lower power consumption, and a more modern PCIe interface should consider the Core i5-4670T, accepting that they give up 18% to 18.5% in every Cinebench metric. The verdict from the recorded data is unambiguous: the Opteron 6328 is the faster processor, and the Core i5-4670T wins only on features unrelated to compute benchmarks.