AMD Ryzen 5 7500X3D vs Intel Core Ultra 7 356H Comparison

# The Verdict

The recorded data shows a clear overall winner: the Intel Core Ultra 7 356H outperforms the AMD Ryzen 5 7500X3D in every single head-to-head benchmark in the database. Across 11 benchmark comparisons, the Intel part wins all 11, with margins ranging from a narrow 4% in physics to a dominant 57.7% in floating-point math. The AMD chip's average benchmark score of 44,573 places it slightly ahead of the Intel's 41,215 in raw average, but that figure is skewed by the Intel part's inclusion of Cinebench results in its benchmark set, which are not present for the AMD chip. When comparing only the overlapping PassMark tests, the Intel Core Ultra 7 356H is consistently faster.

For desktop users seeking a high-core-count processor with massive cache, the AMD Ryzen 5 7500X3D offers 96 MB of shared L3 cache and a 65 W TDP, making it a strong candidate for cache-sensitive workloads. However, the data indicates it trails the Intel mobile chip in every measured category. For mobile users or those prioritizing raw computational throughput, the Intel Core Ultra 7 356H delivers superior results across compression, encryption, math operations, and multi-threaded tasks. The Intel chip also benefits from a 3 nm process node versus the AMD's 5 nm, and it supports both DDR5 and LPDDR5X memory with higher bandwidth.

Given the benchmark results, the Intel Core Ultra 7 356H is the better choice for anyone whose workloads align with the tested PassMark suite. The AMD Ryzen 5 7500X3D remains a viable option for desktop builds where the AM5 socket, ECC memory support, and 24 PCIe Gen 5 lanes are priorities, but the performance gap in the recorded tests is substantial and consistent.

# Where Each One Wins

The AMD Ryzen 5 7500X3D does not win any of the 11 head-to-head benchmark comparisons in the database. Its only advantage lies in specifications not covered by the benchmarks: it has a higher base clock (4.00 GHz versus 1.90 GHz), a larger L3 cache (96 MB versus 18 MB), and supports ECC memory. These features could benefit specific workloads like large in-memory databases or error-sensitive computations, but the PassMark scores do not reflect such advantages.

The Intel Core Ultra 7 356H wins everywhere else. Its biggest margins come in floating-point math, where it scores 103,128 against the AMD's 43,594, a 57.7% advantage. It also leads by 40% in data encryption (26,345 versus 15,797), by 32.4% in prime number finding (327 versus 221), and by 26.3% in multi-threaded performance (33,978 versus 25,047). Additional wins include data compression (336,177 versus 271,649, a 19.2% lead), random string sorting (40,990 versus 32,999, a 19.5% lead), integer math (83,111 versus 70,774, a 14.8% lead), extended instructions (27,898 versus 20,455, a 26.7% lead), and single-thread performance (4,072 versus 3,494, a 14.2% lead). The smallest margin is in physics, where the Intel chip scores 2,895 versus 2,779, a 4% difference.

# Architecture Differences

The AMD Ryzen 5 7500X3D is a desktop processor from the 7000 series, built on the Zen 4 (Raphael) architecture using a 5 nm process at TSMC. It packages 6 cores and 12 threads, with a base clock of 4.00 GHz and a boost clock of 4.50 GHz. The chip contains 11,270 million transistors on a 71 mm² die. Its cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and a substantial 96 MB of shared L3 cache. Memory support is DDR5 over a dual-channel bus, delivering 83.2 GB/s of bandwidth, with ECC support enabled. The processor connects via AMD Socket AM5 and provides 24 PCIe Gen 5 lanes from the CPU. It integrates Radeon Graphics and carries a TDP of 65 W. The launch MSRP is $269.

The Intel Core Ultra 7 356H is a mobile processor from the Core Ultra Series 3, based on the Panther Lake architecture (Panther Lake-H) using a 3 nm process at Intel. It has 16 cores and 16 threads, with a base clock of 1.90 GHz and a boost clock of 4.70 GHz. The cache design uses 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3 cache. Memory support includes both DDR5 and LPDDR5X over a dual-channel bus, achieving 115.2 GB/s of bandwidth, but ECC is not supported. The chip uses Intel BGA 2540 and provides 12 PCIe Gen 5 lanes from the CPU. It integrates Intel Xe3 Graphics and has a TDP of 25 W.

The most notable architectural differences are the core counts (6 versus 16), the process nodes (5 nm versus 3 nm), the L3 cache sizes (96 MB versus 18 MB), and the memory bandwidth (83.2 GB/s versus 115.2 GB/s). The AMD chip is designed for desktop power envelopes, while the Intel chip targets mobile efficiency with a lower TDP and higher boost clock.

# FAQ

Q: Which processor has the higher average benchmark score?

A: The AMD Ryzen 5 7500X3D has an average benchmark score of 44,573, while the Intel Core Ultra 7 356H scores 41,215. However, the Intel chip's average includes Cinebench tests that the AMD chip does not have, so the comparison is not direct.

Q: How does the Intel chip perform in multi-threaded workloads?

A: The Intel Core Ultra 7 356H scores 33,978 in PassMark multi-thread, which is 26.3% higher than the AMD's 25,047. This aligns with its 16 cores versus the AMD's 6 cores.

Q: Does the AMD chip have any benchmark wins?

A: No. In the head-to-head benchmark data, the Intel Core Ultra 7 356H wins all 11 comparisons. The AMD chip's closest margin is in physics, where it trails by only 4%.

Q: What memory types does each processor support?

A: The AMD Ryzen 5 7500X3D supports DDR5 only, while the Intel Core Ultra 7 356H supports both DDR5 and LPDDR5X. The Intel chip also has higher memory bandwidth at 115.2 GB/s versus 83.2 GB/s.

Q: Which processor has more PCIe lanes?

A: The AMD Ryzen 5 7500X3D provides 24 PCIe Gen 5 lanes from the CPU, while the Intel Core Ultra 7 356H provides 12 PCIe Gen 5 lanes.

Q: What are the TDP ratings?

A: The AMD Ryzen 5 7500X3D has a TDP of 65 W, while the Intel Core Ultra 7 356H has a TDP of 25 W, making the Intel chip more power-efficient on paper.

# Head-to-Head Benchmarks

The largest single win for the Intel Core Ultra 7 356H is in floating-point math. The Intel chip scores 103,128, which is 57.7% above the AMD's 43,594. This massive gap suggests a fundamental throughput advantage in FP-heavy calculations, likely stemming from the Intel chip's higher core count and newer 3 nm process.

Data encryption shows a 40% lead for Intel, with scores of 26,345 versus 15,797. This is a significant margin for a security-related workload, indicating the Intel chip handles cryptographic operations more efficiently. Prime number finding follows with a 32.4% advantage (327 versus 221), and extended instructions shows a 26.7% lead (27,898 versus 20,455).

Multi-threaded performance, a key metric for productivity, favors Intel by 26.3%: 33,978 versus 25,047. Random string sorting also leans Intel by 19.5% (40,990 versus 32,999), and data compression by 19.2% (336,177 versus 271,649). Integer math shows a 14.8% gap (83,111 versus 70,774), while single-thread performance is 14.2% higher on the Intel chip (4,072 versus 3,494).

The closest contest is in physics, where Intel scores 2,895 and AMD scores 2,779, a delta of only 4%. This suggests that the AMD chip's 96 MB L3 cache helps narrow the gap in certain physics simulations, but not enough to overcome the Intel chip's overall advantages.

# Specification Differences

The two processors differ in nearly every core specification. The AMD Ryzen 5 7500X3D has 6 cores and 12 threads, while the Intel Core Ultra 7 356H has 16 cores and 16 threads. Base clocks are 4.00 GHz for AMD and 1.90 GHz for Intel, but boost clocks are closer: 4.50 GHz versus 4.70 GHz. The AMD chip uses a 5 nm process from TSMC, while Intel uses a 3 nm process from its own foundry.

Cache configurations diverge sharply. AMD provides 64 KB L1 per core and 1 MB L2 per core, with 96 MB shared L3. Intel provides 192 KB L1 per core and 2.5 MB L2 per core, with only 18 MB shared L3. Memory support differs: AMD is DDR5-only with 83.2 GB/s bandwidth and ECC support, while Intel supports DDR5 and LPDDR5X with 115.2 GB/s and no ECC.

PCIe lane counts favor AMD: 24 lanes versus 12 lanes, both Gen 5. Socket types are incompatible: AMD Socket AM5 versus Intel BGA 2540. The AMD chip integrates Radeon Graphics, while Intel integrates Xe3 Graphics. TDP ratings are 65 W for AMD and 25 W for Intel. The AMD chip has a launch MSRP of $269, while the Intel chip's launch MSRP is not recorded.