AMD EPYC 7551 vs Intel Core i7-12800HE Comparison

The Intel Core i7-12800HE and AMD EPYC 7551 represent two fundamentally different approaches to computing: a mobile-first hybrid design versus a server-oriented many-core powerhouse. Despite the EPYC’s massive 32-core/64-thread count, benchmark results show the i7-12800HE securing a narrow but consistent victory across all tested Cinebench workloads. The data reveals that architectural efficiency and higher clock speeds can offset a significant core-count disadvantage in these specific tests.

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7551 has 32 cores and 64 threads, while the Intel Core i7-12800HE has 14 cores and 20 threads. The EPYC’s thread count is more than triple that of the Intel part.

Q: Does the EPYC 7551 beat the i7-12800HE in any benchmark?

A: No. In all six head-to-head Cinebench tests (R15, R20, and R23, both single-core and multi-core), the Intel Core i7-12800HE wins. The margin is consistently around 1.2% in most tests and 1.3% in Cinebench R15 single-core.

Q: How do their average benchmark scores compare?

A: The i7-12800HE has an average benchmark score of 6467, which is 1.2% higher than the EPYC 7551's 6391. This places the Intel chip slightly above its rival in the aggregate data.

Q: Are these processors on the same manufacturing node?

A: No. The Intel chip uses a 10 nm process from Intel’s own foundry, while the AMD EPYC 7551 uses a 14 nm process from GlobalFoundries. The EPYC also has a much larger transistor count at 4,800 million compared to the i7's unspecified count.

Q: What kind of memory do they support?

A: The i7-12800HE supports both DDR4 and DDR5 with a dual-channel memory bus. The EPYC 7551 supports DDR4 only, but features an eight-channel memory bus with a rated bandwidth of 170.6 GB/s. The EPYC also supports ECC memory, while the i7 does not.

Q: Which processor is better for single-threaded performance?

A: Based on Cinebench single-core scores, the Intel Core i7-12800HE is better. It leads by 1.3% in R15 (318 vs 314) and by 1.2% in both R20 (1325 vs 1309) and R23 (3156 vs 3119).

Architecture Differences

The architectural gap between these two CPUs is stark. The Intel Core i7-12800HE is built on Alder Lake-H architecture using a 10 nm process at Intel’s foundry. It features a hybrid design typical of 12th Gen Core, with a total of 14 cores and 20 threads. Its die size is 217 mm². The L1 cache is 80 KB per core, L2 is 1.25 MB per core, and L3 is 24 MB shared. It supports both DDR4 and DDR5 memory over a dual-channel bus, but lacks ECC support. The chip uses PCIe Gen 4 with 20 lanes (CPU only) and includes integrated Iris Xe 96EU graphics. It is a mobile processor on the Intel BGA 1744 socket with a 45 W TDP and is not multiplier unlocked.

In contrast, the AMD EPYC 7551 is based on the original Zen architecture, codenamed Naples, from the EPYC 7001 series. It is manufactured on a 14 nm process at GlobalFoundries, with 4,800 million transistors and a slightly larger die at 213 mm². Its cache hierarchy is different: L1 is 96 KB per core, L2 is 512 KB per core, and L3 is a much larger 64 MB shared pool. The EPYC supports DDR4 only, but through an eight-channel memory bus offering 170.6 GB/s of bandwidth. It fully supports ECC memory. It uses PCIe Gen 3 and has no integrated graphics. This is a server/workstation part on the AMD Socket SP3 with a 180 W TDP and an unlocked multiplier. The EPYC launched on 2017-06-28, making it an older design by several generations.

Head-to-Head Benchmarks

The benchmark data paints a picture of remarkable consistency. The Intel Core i7-12800HE wins every single comparison, but the margins are razor-thin. In Cinebench R15 multi-core, the Intel chip scores 2253 against the EPYC’s 2227, a 1.2% lead. The R15 single-core test shows 318 versus 314, a 1.3% advantage for Intel. Moving to Cinebench R20, the multi-core result is 9391 for Intel versus 9280 for AMD, again a 1.2% delta. The R20 single-core score goes to Intel at 1325, with AMD at 1309, another 1.2% margin.

Cinebench R23 continues the trend. The Intel chip hits 22360 in multi-core, while the EPYC manages 22096, a 1.2% difference. In R23 single-core, Intel scores 3156 against AMD’s 3119, once more a 1.2% lead. The pattern is clear: the i7-12800HE is uniformly faster in these tests, but the EPYC 7551 is never far behind. Given that the EPYC has more than double the cores and over three times the threads, its near-parity in multi-core tests reflects its server-grade scaling, while the Intel part’s higher boost clock of 4.60 GHz versus 3.00 GHz explains its single-core edge.

Specification Differences

The specification sheet reveals where these two diverge most sharply. The core count is the obvious headline: 14 cores for Intel versus 32 for AMD. Thread counts are 20 versus 64. Clock speeds favor Intel heavily, with a base of 2.40 GHz and boost of 4.60 GHz, compared to the EPYC’s 2000.00 MHz base and 3.00 GHz boost. TDP is a major separator, with Intel at 45 W and AMD at 180 W. The process node differs, 10 nm versus 14 nm, as does the foundry, Intel versus GlobalFoundries. Transistor count is specified for AMD only at 4,800 million, while Intel’s is not listed. Die size is close, 217 mm² for Intel and 213 mm² for AMD.

Cache configurations are fundamentally different. Intel uses 80 KB L1 per core, 1.25 MB L2 per core, and 24 MB shared L3. AMD uses 96 KB L1 per core, 512 KB L2 per core, and 64 MB shared L3. Memory support shows Intel with DDR4 and DDR5 on a dual-channel bus, while AMD has DDR4 only but on an eight-channel bus with 170.6 GB/s bandwidth. ECC memory is available only on the EPYC. PCIe generation differs, Gen 4 for Intel versus Gen 3 for AMD, with Intel specifying 20 lanes. Integrated graphics exist only on the Intel chip (Iris Xe 96EU). Sockets are incompatible, BGA 1744 versus SP3. The EPYC is unlocked for multiplier adjustment, while the i7 is locked. Market segments are mobile versus server/workstation, with matching production statuses of Active.

Where Each One Wins

The Intel Core i7-12800HE wins in every benchmark category tested. Its advantages are most pronounced in single-threaded workloads, where its higher boost clock of 4.60 GHz provides a meaningful edge over the EPYC’s 3.00 GHz ceiling. For tasks that rely on low-latency, high-frequency execution, such as typical desktop applications or lightly threaded productivity, the i7 is the better performer. Its mobile design at 45 W TDP also makes it suitable for systems where power efficiency is critical, and its integrated Iris Xe 96EU graphics eliminate the need for a discrete GPU in basic setups. The inclusion of PCIe Gen 4 support is a forward-looking feature for fast storage and modern peripherals.

The AMD EPYC 7551, despite losing all head-to-head tests, has clear strengths in its specification sheet. Its 32 cores and 64 threads provide massive parallel throughput potential, even if Cinebench did not show it winning. The eight-channel memory bus with 170.6 GB/s bandwidth and ECC support make it suited for memory-intensive server workloads where data integrity is paramount. The large 64 MB L3 cache is beneficial for large datasets. Its unlocked multiplier allows for tuning, though the 180 W TDP requires substantial cooling. For a server/workstation platform requiring high core density and robust memory capabilities, the EPYC’s architectural design is the appropriate choice, even if it trails in these specific benchmarks.

The Verdict

The data is unambiguous: the Intel Core i7-12800HE outperforms the AMD EPYC 7551 in all six Cinebench tests, with a consistent 1.2% to 1.3% margin. The i7 also holds a higher average benchmark score of 6467 versus 6391, a 1.2% advantage. For users prioritizing raw single-thread speed, lower power consumption, or integrated graphics, the i7-12800HE is the clear winner. Its 4.60 GHz boost clock and 10 nm process deliver superior efficiency in these measured workloads.

However, the EPYC 7551 should not be dismissed. Its 32-core/64-thread configuration, eight-channel memory bandwidth, and ECC support target a different class of computing. The benchmark scores show it is only narrowly behind in Cinebench, despite its older architecture and much lower clock speeds. For server workloads that leverage high thread counts and memory bandwidth, the EPYC’s feature set is more appropriate. The choice depends on the workload: pick the Intel i7-12800HE for frequency-sensitive tasks and mobile efficiency, or the AMD EPYC 7551 for server-grade parallelism and memory capacity, knowing it will lag slightly in the tested Cinebench scenarios.