AMD EPYC 7543 vs Intel Core 3 100U Comparison

The Verdict

The Intel Core 3 100U and AMD EPYC 7543 are not competing in the same arena. The data is unambiguous: the EPYC 7543 wins all six recorded head-to-head benchmarks, with deltas of roughly 80% in its favor across Cinebench R15, R20, and R23, both single-core and multi-core. This is a server/workstation processor designed for sustained, massive throughput, while the Core 3 100U is a low-power mobile chip for thin laptops. If you need heavy multi-threaded rendering, virtual machine hosting, or database work, the EPYC 7543 is the only choice from this data. If you need a chip for a portable notebook with modest power draw, the Core 3 100U is the only one that fits that physical and thermal envelope. There is no overlap in use cases. The EPYC's 32 cores and 64 threads dwarf the Core 3's 6 cores and 8 threads, and its 256 MB shared L3 cache is a massive advantage for server workloads. The Core 3 100U's only practical edge is its 15 W TDP versus the EPYC's 225 W, which makes it viable for battery-powered devices. The verdict is simple: pick the EPYC for compute density, pick the Core 3 for portability.

Architecture Differences

The two chips come from fundamentally different design philosophies. The Intel Core 3 100U uses Raptor Lake-U architecture, built on Intel's 10 nm process. It has 6 cores and 8 threads, with a base clock of 1.20 GHz and a boost clock of 4.70 GHz. The EPYC 7543 uses AMD's Zen 3 architecture (codename Milan), fabricated by TSMC on a 7 nm node. It packs 32 cores and 64 threads, running at a 2.80 GHz base and 3.70 GHz boost. The process node difference (10 nm Intel vs 7 nm TSMC) is significant, but the core count difference is the dominant factor.

Cache hierarchies are also polar opposites. The Core 3 100U has 80 KB of L1 per core, 1.25 MB of L2 per core, and 10 MB of shared L3. The EPYC 7543 has 64 KB of L1 per core, 512 KB of L2 per core, but a massive 256 MB of shared L3. That 256 MB cache is the single most important architectural feature for server workloads, as it allows large datasets to stay on-chip. The EPYC also has 33,200 million transistors spread across 8 dies, each 81 mm², while the Core 3's transistor count and die size are not recorded.

Memory support differs sharply. The Core 3 supports DDR4 and DDR5 in a dual-channel configuration, with no ECC support. The EPYC supports DDR4 only, but in an eight-channel configuration with a recorded memory bandwidth of 204.8 GB/s and ECC memory support. PCIe lanes also tell the story: the Core 3 has Gen 4 with 8 lanes (CPU only), while the EPYC has Gen 4 with 128 lanes (CPU only). The EPYC also has no integrated graphics, while the Core 3 includes UHD Graphics 64EU. The EPYC's transistor count and die size are recorded; the Core 3's are not, reflecting the gap in complexity and physical scale.

Head-to-Head Benchmarks

The EPYC 7543 dominates every recorded benchmark, but the margins are worth examining precisely. In Cinebench R15 multi-core, the EPYC scores 5393 against the Core 3's 1070, a delta of -80.2% for the Intel chip. In R15 single-core, the EPYC scores 761 against 150, a -80.3% delta. The pattern holds across all Cinebench versions: R20 multi-core is 22473 versus 4462 (-80.1%), R20 single-core is 3172 versus 629 (-80.2%), R23 multi-core is 53509 versus 10624 (-80.1%), and R23 single-core is 7554 versus 1499 (-80.2%).

The single-core deltas are striking. Even with the Core 3's much higher 4.70 GHz boost clock versus the EPYC's 3.70 GHz, the EPYC still leads by roughly 80% in single-threaded Cinebench scores. That indicates the Zen 3 architecture's per-core efficiency is far ahead, or the recorded boost behavior favors the EPYC in sustained loads. The multi-core deltas are even more lopsided, which is expected given the 32-core versus 6-core count.

For the Core 3, the only recorded wins in its broader benchmark suite are not against the EPYC, but its PassMark results show a different profile. It scores 136497 in data compression, 8128 in data encryption, 7894 in extended instructions, 52 in find prime numbers, 28322 in floating point math, 39580 in integer math, 12522 in multithread, 876 in physics, 15191 in random string sorting, and 3506 in single thread. The EPYC has no recorded PassMark results, so these numbers stand alone. The average benchmark score for the Core 3 is 16148, while the EPYC's average is 15477, meaning the Core 3 actually sits slightly higher in the database's overall average. However, that average includes the Core 3's PassMark results, which the EPYC lacks.

Specification Differences

The two processors differ in nearly every measurable field. The Core 3 has 6 cores and 8 threads; the EPYC has 32 cores and 64 threads. Base clocks are 1.20 GHz versus 2.80 GHz, but boost clocks are 4.70 GHz versus 3.70 GHz. TDP is 15 W versus 225 W. Sockets are Intel BGA 1744 versus AMD Socket SP3. The process node is 10 nm (Intel) versus 7 nm (TSMC). The EPYC has recorded transistors (33,200 million) and die size (8x 81 mm²); the Core 3 has neither. L1 cache is 80 KB per core versus 64 KB per core; L2 is 1.25 MB per core versus 512 KB per core; L3 is 10 MB shared versus 256 MB shared. Memory support is DDR4/DDR5 dual-channel versus DDR4 eight-channel. ECC is false versus true. PCIe is Gen 4, 8 lanes versus Gen 4, 128 lanes. Integrated graphics exist only on the Core 3 (UHD Graphics 64EU). Market segment is Mobile versus Server/Workstation. Release dates are 2024-01-07 versus 2021-03-14. Launch MSRP is $426 for the Core 3 and $3761 for the EPYC. The EPYC's part number is 100-000000345100-100000345WOF, while the Core 3's is SRMYL. Neither has an unlocked multiplier.

FAQ

Q: Which CPU has more cores?

A: The AMD EPYC 7543 has 32 cores and 64 threads. The Intel Core 3 100U has 6 cores and 8 threads.

Q: Does the Intel Core 3 100U have integrated graphics?

A: Yes, it includes UHD Graphics 64EU. The AMD EPYC 7543 has no integrated graphics.

Q: Which CPU supports ECC memory?

A: The AMD EPYC 7543 supports ECC memory. The Intel Core 3 100U does not.

Q: What is the memory bandwidth difference?

A: The EPYC 7543 has a recorded memory bandwidth of 204.8 GB/s with an eight-channel DDR4 configuration. The Core 3 100U uses dual-channel DDR4 or DDR5, with no recorded bandwidth figure.

Q: How do the Cinebench R23 multi-core scores compare?

A: The EPYC 7543 scores 53509, while the Core 3 100U scores 10624. The EPYC leads by 80.1%.

Q: Which CPU has a higher boost clock?

A: The Intel Core 3 100U boosts to 4.70 GHz, while the AMD EPYC 7543 boosts to 3.70 GHz. Despite this, the EPYC wins all single-core Cinebench tests.

Where Each One Wins

The AMD EPYC 7543 wins in every scenario that involves compute throughput. Its six Cinebench wins, with deltas around 80%, cover both single-core and multi-core workloads. For rendering, simulation, scientific computing, database serving, or any task that scales across 32 cores and 64 threads, the EPYC is the clear winner. Its 256 MB L3 cache and 204.8 GB/s memory bandwidth make it suited for large in-memory datasets. The 128 PCIe Gen 4 lanes allow for extensive I/O expansion in a server chassis. ECC memory support is critical for reliability in long-running server environments. The EPYC's 225 W TDP is a cost of that performance, but in a server rack, that is a non-issue.

The Intel Core 3 100U wins in portability and power efficiency. Its 15 W TDP is a fraction of the EPYC's 225 W, making it suitable for battery-powered laptops. It has integrated graphics, which means no discrete GPU is required for basic display output. Its boost clock of 4.70 GHz is higher than the EPYC's 3.70 GHz, though the recorded benchmarks show the EPYC still wins single-thread performance. The Core 3 supports both DDR4 and DDR5, offering memory flexibility. It also has a lower launch MSRP of $426 versus the EPYC's $3761, though cost should not be the primary factor given the different market segments. The Core 3's average benchmark score of 16148 is actually higher than the EPYC's 15477, but that is skewed by the PassMark tests that the EPYC did not run. For a thin-and-light laptop, the Core 3 is the only viable option here. For anything else, the EPYC wins.