AMD EPYC 7J13 vs Intel Core Ultra 7 155U Comparison

FAQ

Q: Which processor has more cores and threads?

A: The AMD EPYC 7J13 has 64 cores and 128 threads, while the Intel Core Ultra 7 155U has 12 cores and 14 threads. The EPYC offers a 52-core and 114-thread advantage.

Q: How does the single-core performance compare between the two?

A: The AMD EPYC 7J13 wins all single-core benchmarks in the recorded data. In Cinebench R23 single-core, the EPYC scores 10,174 versus the Intel's 1,666, a difference of 83.6% in favor of AMD.

Q: What are the cache configurations?

A: The Intel Core Ultra 7 155U has 112 KB L1 per core, 2 MB L2 per core, and 12 MB shared L3. The AMD EPYC 7J13 has 64 KB L1 per core, 512 KB L2 per core, and 256 MB shared L3.

Q: Does the Intel processor include integrated graphics?

A: Yes, the Intel Core Ultra 7 155U features Arc Xe-LPG 64EU integrated graphics. The AMD EPYC 7J13 has no integrated graphics listed in the database.

Q: Which processor supports ECC memory?

A: The AMD EPYC 7J13 supports ECC memory, while the Intel Core Ultra 7 155U does not.

Q: What are the memory bandwidth specifications?

A: The Intel Core Ultra 7 155U has a dual-channel memory bus with 89.6 GB/s bandwidth. The AMD EPYC 7J13 has an eight-channel memory bus with 204.8 GB/s bandwidth.

Where Each One Wins

The benchmark data shows a complete sweep: the AMD EPYC 7J13 wins all six head-to-head tests listed in the database. The Intel Core Ultra 7 155U records zero wins across Cinebench R15, R20, and R23, both in multi-core and single-core workloads. This is an unambiguous result, but the nature of the victories differs by workload type.

In multi-core tests, the EPYC's lead is massive. The Cinebench R23 multi-core score of 72,068 versus 9,674.5 represents an 86.6% deficit for the Intel part. The R20 multi-core test shows an 81% gap (30,268 versus 5,765). These margins reflect the EPYC's 64-core, 128-thread configuration, which allows it to process far more parallel work simultaneously. The Intel chip's 12-core, 14-thread design is not competitive in heavily threaded rendering or compute workloads.

Single-core tests tell a similar story, though with slightly smaller margins. The Cinebench R15 single-core result shows a 76.7% delta (1,025 versus 238.5), while R23 single-core shows an 83.6% delta (10,174 versus 1,666). The EPYC's higher base and boost clocks (2.55 GHz base, 3.50 GHz boost versus 1.70 GHz base, 4.80 GHz boost for Intel) contribute to this advantage, though the Intel part's higher boost clock does not translate into a win.

For users choosing between these two, the decision is workload-driven. The EPYC 7J13 is designed for server and workstation environments where thread counts and memory bandwidth dominate. The Intel Core Ultra 7 155U is a mobile processor with integrated graphics, suited for thin-and-light laptops where power consumption and physical size matter more than raw throughput. The database shows the EPYC wins every recorded benchmark, but the Intel chip occupies a different market segment entirely.

Architecture Differences

The two processors come from fundamentally different design philosophies. The Intel Core Ultra 7 155U uses Meteor Lake architecture, built on a 7 nm process at Intel's foundry. It belongs to the Core Ultra Series 1 generation, released in December 2023. The AMD EPYC 7J13 uses Zen 3 architecture, codenamed Milan, also on a 7 nm process but manufactured by TSMC. It is part of AMD's EPYC server lineup.

The core counts diverge sharply: 12 cores and 14 threads for Intel versus 64 cores and 128 threads for AMD. This reflects the target markets. The Intel chip is a mobile processor with a 15 W TDP, while the EPYC is a server part with a 280 W TDP. The thermal envelope difference explains much of the performance gap, as the EPYC has far more power budget to sustain high clock speeds across many cores.

Cache hierarchies differ in structure and size. Intel uses 112 KB L1 per core, 2 MB L2 per core, and 12 MB shared L3. AMD uses 64 KB L1 per core, 512 KB L2 per core, and 256 MB shared L3. The EPYC's 256 MB L3 is more than 21 times larger than Intel's 12 MB L3, which benefits workloads that repeatedly access large datasets. The Intel L2 cache is 4 times larger per core, but the EPYC's total cache capacity is far greater.

Memory architecture also diverges. Intel supports DDR5 with a dual-channel bus, while AMD supports DDR4 with an eight-channel bus. The EPYC's eight-channel configuration provides 204.8 GB/s of memory bandwidth versus Intel's 89.6 GB/s, a 2.3 times advantage. The EPYC also supports ECC memory, which is critical for server reliability. Intel's chip does not support ECC.

PCIe connectivity shows a similar split. The EPYC offers Gen 4 with 128 lanes, while the Intel chip offers Gen 4 with 12 lanes. The EPYC's lane count enables massive I/O expansion for storage, networking, and accelerators. The Intel chip's 12 lanes are sufficient for a mobile device's typical peripherals.

The EPYC integrates no graphics, while the Intel chip includes Arc Xe-LPG 64EU. This is a notable difference for mobile users who need a display output without a discrete GPU. The EPYC requires a separate graphics adapter, which is standard for server platforms.

Specification Differences

The database lists several specifications where the two processors differ directly.

Core count: 12 for Intel, 64 for AMD. Thread count: 14 for Intel, 128 for AMD. Base clock: 1.70 GHz for Intel, 2.55 GHz for AMD. Boost clock: 4.80 GHz for Intel, 3.50 GHz for AMD. TDP: 15 W for Intel, 280 W for AMD.

Socket: Intel BGA 2049 versus AMD Socket SP3. These are not interchangeable, and each requires a distinct motherboard and cooling solution.

Process node: both are 7 nm, but the foundry differs. Intel uses its own foundry, while AMD uses TSMC. The EPYC also lists transistor count of 33,200 million and die size of 8x 81 mm². The Intel chip has no recorded transistor or die size data in the database.

L1 cache: 112 KB per core for Intel, 64 KB per core for AMD. L2 cache: 2 MB per core for Intel, 512 KB per core for AMD. L3 cache: 12 MB shared for Intel, 256 MB shared for AMD.

Memory support: DDR5 for Intel, DDR4 for AMD. Memory bus: dual-channel for Intel, eight-channel for AMD. Memory bandwidth: 89.6 GB/s for Intel, 204.8 GB/s for AMD. ECC support: false for Intel, true for AMD.

PCIe: Gen 4 with 12 lanes for Intel, Gen 4 with 128 lanes for AMD. Integrated graphics: Intel has Arc Xe-LPG 64EU, AMD has none. Market segment: Mobile for Intel, Server/Workstation for AMD.

Release date: Intel lists December 13, 2023. AMD has no release date recorded. Launch MSRP: Intel lists $490, AMD has no MSRP recorded. Multiplier unlocked: false for both. The Intel part number is SRN6B, while AMD lists 100-000000346.

Head-to-Head Benchmarks

The head-to-head data contains six Cinebench tests, and the AMD EPYC 7J13 wins all of them. The deltas are consistently large, with the smallest gap being 76.7% and the largest being 86.6%.

In Cinebench R15 multi-core, the EPYC scores 7,264 against Intel's 1,585, a delta of 78.2% in AMD's favor. This early test sets the pattern: the EPYC's core count advantage translates directly into multi-threaded rendering performance. The R15 single-core test shows the EPYC at 1,025 versus Intel's 238.5, a 76.7% delta. Even in a single-threaded workload, the EPYC's higher base clock and Zen 3 architecture deliver a decisive win.

Cinebench R20 multi-core shows the EPYC at 30,268 versus Intel's 5,765, an 81% delta. The R20 single-core test shows 4,273 versus 813, also 81%. These results indicate that the performance ratio remains stable across different Cinebench versions, suggesting the architectural advantage is consistent rather than workload-specific.

Cinebench R23 multi-core produces the largest gap of the set: 72,068 for the EPYC versus 9,674.5 for Intel, an 86.6% delta. This is the most demanding multi-threaded test in the database, and the EPYC's 64 cores scale effectively. The R23 single-core test shows 10,174 versus 1,666, an 83.6% delta.

The pattern is clear. The EPYC outperforms the Intel chip by roughly 77% to 87% across all Cinebench tests, with multi-core deltas slightly larger than single-core deltas. The Intel Core Ultra 7 155U's higher boost clock of 4.80 GHz does not compensate for its lower base clock and far fewer cores. The EPYC's 3.50 GHz boost clock, combined with 64 cores, dominates every measured workload.

The database records zero wins for the Intel processor in this comparison. The average benchmark score for the Intel chip is 21,174 with a 75th percentile ranking, while the EPYC averages 20,845 with a 74th percentile ranking. These overall averages are close, but the head-to-head Cinebench results show a one-sided outcome. The EPYC's nearest rivals include the Intel Core Ultra 5 125U and Intel Xeon 6325P, while the Intel Core Ultra 7 155U's nearest rivals include the AMD Ryzen 5 7530U and Intel Core Ultra 7 256V. This suggests that each processor competes in a different performance tier, despite the similar overall average scores.