AMD Opteron 4280 vs Intel Core i5-3550S Comparison

The Intel Core i5-3550S and the AMD Opteron 4280 are two very different processors that land in the same performance neighborhood according to the database. The Intel part is a 65-watt desktop chip with 4 cores and 4 threads, built on a 22 nm process with Ivy Bridge architecture, while the AMD Opteron 4280 is a 95-watt server/workstation chip with 8 cores and 8 threads, built on a 32 nm process with Bulldozer architecture. Despite these architectural divides, their benchmark scores are remarkably close, with the Opteron holding a narrow lead in most recorded tests. The database places both processors at the 31st percentile among all CPUs, and their average benchmark scores differ by only 11 points (1118 for the Intel, 1107 for the AMD). This is a matchup where the deciding factors are not raw speed but platform features, power characteristics, and intended use case.

The Verdict

The data points to a clear split: choose the Intel Core i5-3550S if you need an integrated graphics solution, a lower power draw, and PCIe Gen 3 connectivity for a desktop build. The i5-3550S includes Intel HD 2500 graphics, operates at 65 watts TDP, and supports PCIe Gen 3 with 16 lanes from the CPU. It also has a slightly higher base clock of 3.00 GHz versus the Opteron’s 2.80 GHz, and a boost clock of 3.70 GHz versus 3.50 GHz. For a compact or power-conscious desktop system, the Intel part is the sensible pick.

Choose the AMD Opteron 4280 if you need ECC memory support, server-grade reliability, and a larger physical core count for multi-threaded workloads. The Opteron 4280 is a server/workstation part with 8 cores and 8 threads, supports ECC memory, and has a higher memory bandwidth rating of 25.6 GB/s. It also carries a launch MSRP of $255, which was its original price point. The Opteron wins 5 of the 6 head-to-head benchmark comparisons, though by very small margins (under 1% in every case).

For most users, the choice comes down to platform needs rather than performance. The benchmark results are effectively tied, so the decision should be driven by whether you need integrated graphics and lower power (Intel) or ECC memory and server features (AMD).

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core i5-3550S is a 4-core, 4-thread part based on the Ivy Bridge architecture, manufactured on a 22 nm process at Intel’s foundry. It contains 1,400 million transistors on a die size of 160 mm². Its cache hierarchy includes 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 6 MB of shared L3 cache. The processor supports DDR3 memory through a dual-channel memory bus, but does not support ECC memory. It uses the Intel Socket 1155 and includes integrated Intel HD 2500 graphics. PCIe support is Gen 3 with 16 lanes from the CPU.

The AMD Opteron 4280 is an 8-core, 8-thread part based on the Bulldozer architecture, specifically the Valencia codename within the Opteron 4000 series. It is manufactured on a 32 nm process at GlobalFoundries, with 1,200 million transistors on a larger die size of 315 mm². Its cache configuration is notably different: 384 KB of L1 cache total, 8 MB of L2 cache total, and 8 MB of shared L3 cache. It supports DDR3 memory through a dual-channel bus with a rated memory bandwidth of 25.6 GB/s, and it does support ECC memory. The processor uses the AMD Socket C32 and has no integrated graphics. PCIe support is Gen 2.

The die size difference is striking: the AMD part is nearly twice as large (315 mm² versus 160 mm²) despite having fewer transistors, reflecting the less dense 32 nm process. The Intel part’s smaller die and lower transistor count per die are offset by its more modern 22 nm node. The cache layouts also differ, with Intel using per-core L1 and L2 caches while AMD uses a shared L1 pool (384 KB total) and larger L2 and L3 caches (8 MB each).

The Intel part has no integrated graphics on the AMD side, and the AMD part has no integrated graphics at all, which is expected for a server/workstation chip. The Intel part also has a distinct advantage in power efficiency: 65 watts versus 95 watts TDP, a 30-watt difference.

Where Each One Wins

The benchmark results show a narrow but consistent edge for the AMD Opteron 4280 in multi-core and single-core tests. In Cinebench R15 multicore, the Opteron scores 385 versus the Intel’s 383, a 0.5% difference. In Cinebench R20 multicore, the Opteron scores 1607 versus 1599, again 0.5% ahead. In Cinebench R23 multicore, the Opteron scores 3828 versus 3808, a 0.5% lead. The single-core tests follow a similar pattern: Cinebench R15 single-core is tied at 54 points, Cinebench R20 single-core goes to the Opteron 226 versus 225 (0.4% ahead), and Cinebench R23 single-core goes to the Opteron 540 versus 537 (0.6% ahead). The only Intel win is the R15 single-core tie, which is recorded as an Intel win due to the tie-breaking rule.

The Intel part wins in areas not covered by the benchmark suite: it has integrated graphics, a lower TDP, PCIe Gen 3 support, and a smaller physical footprint. The AMD part wins in server-relevant features: ECC memory support, higher memory bandwidth (25.6 GB/s), and a larger core count (8 versus 4) that could scale better in specific multi-threaded scenarios beyond the tested Cinebench workloads.

For desktop use, the Intel part’s integrated graphics and lower power draw make it more suitable for basic systems without a discrete GPU. For server or workstation use, the AMD part’s ECC support and higher core count align with reliability and throughput requirements.

FAQ

Q: Which processor has better single-core performance?

A: The two are essentially tied in single-core tests. Cinebench R15 single-core is exactly 54 points for both. Cinebench R20 single-core favors the AMD Opteron 4280 by 1 point (226 versus 225), and Cinebench R23 single-core favors the AMD by 3 points (540 versus 537).

Q: Does the Intel Core i5-3550S support ECC memory?

A: No. The Intel part does not support ECC memory, while the AMD Opteron 4280 does. This is a key differentiator for server/workstation reliability.

Q: What is the TDP difference between the two chips?

A: The Intel Core i5-3550S has a TDP of 65 watts. The AMD Opteron 4280 has a TDP of 95 watts. The Intel part draws 30 watts less under load.

Q: Which processor has more cores?

A: The AMD Opteron 4280 has 8 cores and 8 threads. The Intel Core i5-3550S has 4 cores and 4 threads. Despite this core count advantage, the AMD part only leads by 0.5% in multi-core Cinebench tests.

Q: Does the AMD Opteron 4280 have integrated graphics?

A: No. The AMD Opteron 4280 has no integrated graphics. The Intel Core i5-3550S includes Intel HD 2500 graphics.

Q: Which processor supports PCIe Gen 3?

A: The Intel Core i5-3550S supports PCIe Gen 3 with 16 lanes from the CPU. The AMD Opteron 4280 supports PCIe Gen 2.

Head-to-Head Benchmarks

The head-to-head benchmark data reveals a remarkably tight race. Across six Cinebench tests, the AMD Opteron 4280 wins five and the Intel Core i5-3550S wins one (a tie). The largest margin of victory is just 0.6%.

In Cinebench R15 multicore, the Opteron scores 385 against the Intel’s 383, a 0.5% difference. This is the first recorded test and sets the tone for the matchup. The single-core R15 test is a dead heat at 54 points each, with the Intel recorded as the winner due to the tie-breaking rule.

Moving to Cinebench R20, the multicore test shows the Opteron at 1607 versus the Intel at 1599, again a 0.5% margin. The single-core R20 test gives the Opteron a 226 to 225 win, a 0.4% difference. In Cinebench R23, the multicore test has the Opteron at 3828 versus 3808, a 0.5% lead, and the single-core test has the Opteron at 540 versus 537, a 0.6% lead, which is the largest gap in any benchmark.

These results suggest that the AMD Opteron 4280’s additional four cores do not translate into proportional performance gains. The Intel i5-3550S, with half the physical cores, nearly matches the Opteron across all tests. The 22 nm Ivy Bridge architecture delivers higher per-core efficiency, allowing the 4-core Intel part to stay within 1% of the 8-core AMD part in every workload.

The average benchmark scores from the broader database confirm this: the Intel i5-3550S averages 1118 points, while the AMD Opteron 4280 averages 1107 points, meaning the Intel part is actually slightly ahead on average despite losing the head-to-head Cinebench tests. This discrepancy is because the Intel part has additional Geekbench scores in the database (1716 multicore and 623 singlecore) that are not part of the head-to-head comparison, while the AMD part only has Cinebench scores.

The nearest rivals for the Intel i5-3550S include the Intel Core i3-4150 (average score 1119, 0.1% behind), the Intel Core i7-2860QM (1120, 0.1% behind), the AMD Athlon 240GE (1121, 0.2% behind), and the AMD Ryzen 3 1200 (1116, 0.2% ahead). The nearest rivals for the AMD Opteron 4280 include the AMD PRO A12-8870 (1107, 0% difference), the AMD Opteron 3280 (1106, 0.1% ahead), the AMD Athlon X4 845 (1106, 0.1% ahead), and the Intel Core i5-4570T (1108, 0.1% behind). Both chips sit in a crowded performance band where many processors from different generations and price points land within a few points of each other.

For the specific matchup, the data shows that the AMD Opteron 4280 holds a consistent, albeit tiny, edge in the Cinebench suite, while the Intel i5-3550S offers superior platform efficiency with lower power consumption, integrated graphics, and newer PCIe support. The choice between the two should be based on those platform features, not on benchmark scores, since the performance difference is negligible.