AMD Ryzen 7 7700X3D vs Intel Core Ultra 7 356H Comparison

FAQ

Q: What is the core and thread configuration of the AMD Ryzen 7 7700X3D?

A: The AMD Ryzen 7 7700X3D has 8 cores and 16 threads.

Q: What is the core and thread configuration of the Intel Core Ultra 7 356H?

A: The Intel Core Ultra 7 356H has 16 cores and 16 threads.

Q: What are the boost clock speeds of the two processors?

A: The AMD Ryzen 7 7700X3D boosts to 4.50 GHz, while the Intel Core Ultra 7 356H boosts to 4.70 GHz.

Q: What is the thermal design power (TDP) for each processor?

A: The AMD Ryzen 7 7700X3D has a TDP of 120 W, whereas the Intel Core Ultra 7 356H has a TDP of 25 W.

Q: Which processor has more L3 cache?

A: The AMD Ryzen 7 7700X3D has 96 MB of shared L3 cache, while the Intel Core Ultra 7 356H has 18 MB of shared L3 cache.

Q: What is the market segment for each processor?

A: The AMD Ryzen 7 7700X3D is a Desktop processor, and the Intel Core Ultra 7 356H is a Mobile processor.

Architecture Differences

The AMD Ryzen 7 7700X3D is part of the 7000 series and uses the Raphael codename, built on the Zen 4 architecture. The manufacturing process is 5 nm, handled by TSMC, with a die size of 71 mm² and a transistor count of 11,270 million. It uses the AMD Socket AM5 and supports DDR5 memory with a dual-channel bus. The integrated graphics are Radeon Graphics. The processor is identified as generation "Ryzen 7 (Zen 4 (Raphael))".

The Intel Core Ultra 7 356H is part of the Core Ultra Series 3 and uses the Panther Lake codename, which is also the architecture name. It is built on a 3 nm process node by Intel. The socket is Intel BGA 2540. Memory support includes both DDR5 and LPDDR5X, also with a dual-channel bus. The integrated graphics are Intel Xe3 Graphics. The generation is listed as "Ultra 7 (Panther Lake-H)".

The cache hierarchies differ significantly. The AMD part has 64 KB of L1 cache per core and 1 MB of L2 cache per core, leading to a large 96 MB shared L3 cache. The Intel part has 192 KB of L1 cache per core and 2.5 MB of L2 cache per core, but a smaller 18 MB shared L3 cache. The AMD processor supports ECC memory, while the Intel processor does not. PCIe lane counts also differ: the AMD chip has Gen 5 with 24 lanes (CPU only), whereas the Intel chip has Gen 5 with 12 lanes (CPU only).

The production status of both processors is Active. The AMD processor has a launch date of 2026-05-30, while the Intel processor has a launch date of 2026-01-04. Neither processor has an unlocked multiplier.

Head-to-Head Benchmarks

The database contains a full set of benchmark results for the Intel Core Ultra 7 356H, but no benchmark scores for the AMD Ryzen 7 7700X3D. The head-to-head comparison relies entirely on the recorded data for the Intel part, which has an average benchmark score of 41215 and a percentile ranking of 87 among all CPUs.

In Cinebench R15, the Intel Core Ultra 7 356H scores 3055 in multicore and 303 in singlecore. In Cinebench R20, it scores 12153 in multicore and 1715 in singlecore. The Cinebench R23 results show 18395 in multicore and 2040 in singlecore. These scores indicate strong multi-threaded performance for a mobile chip.

PassMark results for the Intel processor show a multithread score of 33978 and a single-thread score of 4072. The floating point math score is 103128, and the integer math score is 83111. Data compression scores 336177, while data encryption scores 26345. Extended instructions score 27898, and find prime numbers scores 327. Physics scores 2895, and random string sorting scores 40990.

Without any benchmark scores for the AMD Ryzen 7 7700X3D, the data cannot show direct wins for that processor. The Intel Core Ultra 7 356H dominates the recorded benchmark landscape, but comparisons to the AMD part cannot be quantified from the available facts. The nearest rivals for the Intel processor include the AMD Ryzen AI 5 PRO 440 with an average score of 41208 and a delta of 0, the Intel Core Ultra 7 366H with a score of 41263 and a delta of -0.1, the AMD Ryzen 9 5900X with a score of 41376 and a delta of -0.4, and the Intel Core Ultra X7 358H with a score of 40967 and a delta of 0.6.

The data indicates the Intel Core Ultra 7 356H sits in a competitive cluster with those rivals, with the closest comparison being the AMD Ryzen AI 5 PRO 440. The delta percentages are all within a narrow range, meaning the Intel processor is effectively tied with its nearest rivals in the database.

Specification Differences

The two processors differ in nearly every core specification. The AMD Ryzen 7 7700X3D has 8 cores and 16 threads, while the Intel Core Ultra 7 356H has 16 cores and 16 threads. The AMD base clock is 4.00 GHz, and the Intel base clock is 1.90 GHz. The boost clocks are 4.50 GHz for AMD and 4.70 GHz for Intel. The TDP is 120 W for AMD and 25 W for Intel.

The sockets are different: AMD Socket AM5 versus Intel BGA 2540. The process nodes are 5 nm for AMD and 3 nm for Intel. The foundry is TSMC for AMD and Intel for Intel. The cache configurations differ as described: AMD has 64 KB L1 per core, 1 MB L2 per core, and 96 MB shared L3; Intel has 192 KB L1 per core, 2.5 MB L2 per core, and 18 MB shared L3.

Memory support shows AMD only supports DDR5, while Intel supports DDR5 and LPDDR5X. The memory bandwidth is 83.2 GB/s for AMD and 115.2 GB/s for Intel. ECC memory is supported on AMD but not on Intel. PCIe lanes are 24 for AMD and 12 for Intel, both Gen 5. The integrated graphics are Radeon Graphics for AMD and Intel Xe3 Graphics for Intel.

The market segment is Desktop for AMD and Mobile for Intel. The release dates are 2026-05-30 for AMD and 2026-01-04 for Intel. The AMD part has a launch MSRP of $329, while the Intel part has no launch MSRP listed. The AMD processor has a part number of 100-000002235, and the Intel processor has a part number of SA4RGQ9EU.

The Verdict

The data shows two processors aimed at entirely different use cases. The AMD Ryzen 7 7700X3D is a desktop processor with a high TDP of 120 W, a high base clock of 4.00 GHz, and a massive 96 MB L3 cache. The Intel Core Ultra 7 356H is a mobile processor with a low TDP of 25 W, a lower base clock of 1.90 GHz, but a higher boost clock of 4.70 GHz and a higher memory bandwidth of 115.2 GB/s.

The Intel processor has recorded benchmark scores that place it at the 87th percentile among all CPUs, with an average benchmark score of 41215. The AMD processor has no benchmark scores in the database, making a direct performance comparison impossible from the recorded data. The Intel part also has a higher core count at 16 cores versus 8 cores, though both have 16 threads.

Given the absence of AMD benchmark data, the verdict must rely on architectural and market positioning. The AMD Ryzen 7 7700X3D is a desktop part with a high TDP and large L3 cache, suited for scenarios where power consumption is not a constraint. The Intel Core Ultra 7 356H is a mobile part with a very low TDP, suited for battery-powered devices where efficiency is critical.

The Intel processor's boost clock is higher, and its memory bandwidth is significantly higher. The AMD processor has a much larger L3 cache, which can benefit certain workloads. The choice between the two depends on the platform: desktop versus mobile.

Where Each One Wins

The AMD Ryzen 7 7700X3D wins in scenarios that benefit from its large 96 MB shared L3 cache and high base clock of 4.00 GHz. As a desktop processor with a 120 W TDP, it is positioned for sustained performance in a power-unconstrained environment. The 8-core, 16-thread configuration, combined with ECC memory support, makes it suitable for desktop workloads that require data integrity and large cache residency.

The Intel Core Ultra 7 356H wins in mobile scenarios where its 25 W TDP is a decisive advantage. The 16-core configuration and higher boost clock of 4.70 GHz provide strong peak performance. The higher memory bandwidth of 115.2 GB/s supports memory-intensive tasks. The Intel processor also has recorded benchmark scores, including a Cinebench R23 multicore score of 18395 and a PassMark multithread score of 33978, confirming its capability in the mobile segment.

The Intel processor's support for LPDDR5X memory gives it flexibility in memory types, while the AMD processor is limited to DDR5. The Intel part also has a higher single-thread score in PassMark at 4072, compared to no recorded score for AMD. The data shows the Intel processor is competitive with its nearest rivals, all within a delta of 0.6 percent.

In summary, the AMD Ryzen 7 7700X3D is the choice for desktop builds where its large cache and high base clock can be fully utilized. The Intel Core Ultra 7 356H is the choice for mobile devices where low power consumption and high boost clocks are prioritized. The recorded data supports the Intel processor for multi-threaded and single-threaded benchmarks, while the AMD processor's strengths remain unquantified in the database.