AMD Ryzen AI 7 445 vs Intel Core Ultra 5 338H Comparison

Head-to-Head Benchmarks

The recorded data presents a remarkably one-sided comparison. Across all 15 head-to-head benchmark results, the Intel Core Ultra 5 338H wins every single test. The AMD Ryzen AI 7 445 does not claim a single victory in any measured workload. This is not a close contest with split wins; it is a consistent sweep by the Intel part, with the margin varying substantially depending on the workload type.

The largest gap appears in the PassMark find prime numbers test. The Intel chip scores 304, while the AMD part manages only 56, a delta of -81.6% for the AMD chip. This workload, which stresses integer iteration and branch-heavy code, shows the most extreme divergence between the two processors. The data suggests a fundamental throughput advantage for the Intel architecture in this specific mathematical operation.

Floating-point math also shows a massive separation. The Intel Core Ultra 5 338H delivers 84067 in PassMark floating point math, compared to 39362 for the AMD Ryzen AI 7 445, a difference of -53.2%. Similarly, the PassMark physics test shows the Intel part at 2697 versus 976 for AMD, a -63.8% gap. These results indicate that the Intel processor is delivering more than double the raw compute throughput in numerically intensive workloads.

The data encryption test reveals a dramatic shortfall for the AMD chip. Intel scores 21367, while AMD scores 10519, a -50.8% delta. This suggests the Intel part has significantly stronger cryptographic instruction handling or simply more execution resources for this task. The PassMark multithread score follows a similar trajectory: Intel at 28717 versus AMD at 18115, a -36.9% gap. The Cinebench R23 multicore test confirms the pattern, with Intel scoring 16331 against AMD's 10590, a -35.2% difference.

Single-thread performance is closer but still favors Intel decisively. In Cinebench R23 single-core, Intel scores 2044, AMD scores 1806, a -11.6% delta. PassMark single thread shows Intel at 4180 and AMD at 3591, a -14.1% gap. The Cinebench R15 single-core result shows Intel at 305 and AMD at 254, a -16.7% difference. These margins are smaller than the multi-threaded gaps, but they are consistent.

The smallest overall delta in the entire dataset is in PassMark integer math. Intel scores 64934, AMD scores 58332, a -10.2% difference. Even here, the Intel part wins. The data compression test shows Intel at 276539 versus AMD at 215812, a -22% gap. Random string sorting shows Intel at 34082 versus AMD at 23488, a -31.1% delta. Extended instructions show Intel at 23906 versus AMD at 15826, a -33.8% gap. The pattern is uniform: the Intel Core Ultra 5 338H is ahead in every single measured category, with the largest margins in specialized compute tasks and the smallest in basic integer arithmetic.

Architecture Differences

The two processors come from fundamentally different design philosophies and manufacturing approaches. The AMD Ryzen AI 7 445 uses the Zen 5 architecture under the codename Gorgon Point, built on a 4 nm process at TSMC. It belongs to the Ryzen AI 400 generation, which mixes Zen 5 and Zen 5c cores. The Intel Core Ultra 5 338H uses the Panther Lake architecture, also codenamed Panther Lake, built on a 3 nm process at Intel's own foundry. It belongs to the Ultra 5 generation under the Panther Lake-H designation.

Core counts differ substantially. The AMD part has 6 cores and 12 threads, while the Intel part has 12 cores and 12 threads. This is a key structural difference: the Intel chip has twice as many physical cores, but the AMD chip uses simultaneous multithreading to double its thread count. The result is that both parts present 12 threads to the operating system, but the Intel chip does so with more physical execution units. The data suggests this physical core advantage translates directly into the multi-threaded benchmark wins.

Cache hierarchies are also distinct. The AMD chip has 80 KB of L1 cache per core, 1 MB of L2 per core, and 4 MB of L3 cache. The Intel chip has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3 cache. The Intel part's L3 cache is more than four times larger, which likely contributes to its performance in data-heavy workloads like compression and encryption.

Clock speeds are similar on paper. The AMD part has a base clock of 2.00 GHz and a boost clock of 4.60 GHz. The Intel part has a base clock of 1.90 GHz and a boost clock of 4.70 GHz. The Intel chip boosts slightly higher, but the AMD chip has a slightly higher base clock. The benchmark results, however, show the Intel part winning consistently, which indicates that core count and cache size matter more than these small clock differences.

Memory support differs in an important way. The AMD chip supports both DDR5 and LPDDR5X memory, while the Intel chip supports only LPDDR5X. The Intel part has a memory bandwidth of 136.5 GB/s, while the AMD part has 89.6 GB/s. This 47 GB/s bandwidth advantage for Intel likely plays a role in the multi-threaded and memory-intensive benchmark results. The AMD part supports ECC memory, while the Intel part does not.

PCIe capabilities also differ. The AMD chip uses Gen 4 with 14 lanes on the CPU, while the Intel chip uses Gen 5 with 4 lanes on the CPU. The integrated graphics differ as well: the AMD part has a Radeon 840M, while the Intel part has an Arc B370. The sockets are different: AMD Socket FP8 versus Intel BGA 2540. The process node difference is notable: 4 nm for AMD versus 3 nm for Intel, with TSMC fabricating the former and Intel fabricating the latter.

FAQ

Q: Which processor has more physical cores?

A: The Intel Core Ultra 5 338H has 12 physical cores, while the AMD Ryzen AI 7 445 has 6 physical cores. Both present 12 threads to the system, but the Intel chip achieves this with 12 physical execution units while the AMD chip uses 6 cores with simultaneous multithreading.

Q: How large is the L3 cache difference?

A: The Intel Core Ultra 5 338H has 18 MB of shared L3 cache, while the AMD Ryzen AI 7 445 has 4 MB of L3 cache. The Intel part's L3 cache is 14 MB larger, which is more than four times the capacity of the AMD chip.

Q: What is the memory bandwidth advantage for Intel?

A: The Intel Core Ultra 5 338H has a memory bandwidth of 136.5 GB/s, while the AMD Ryzen AI 7 445 has 89.6 GB/s. This represents a 46.9 GB/s advantage for the Intel part, which corresponds to roughly 52% higher bandwidth.

Q: Does the AMD chip support ECC memory?

A: Yes, the AMD Ryzen AI 7 445 supports ECC memory. The Intel Core Ultra 5 338H does not support ECC memory. This is a feature difference that may matter for specific professional or server-like use cases.

Q: Which processor has the higher boost clock?

A: The Intel Core Ultra 5 338H has a boost clock of 4.70 GHz, while the AMD Ryzen AI 7 445 has a boost clock of 4.60 GHz. The difference is 0.10 GHz in favor of Intel. The AMD chip has a higher base clock at 2.00 GHz versus 1.90 GHz for Intel.

Q: What are the manufacturing process nodes?

A: The AMD Ryzen AI 7 445 is built on a 4 nm process at TSMC. The Intel Core Ultra 5 338H is built on a 3 nm process at Intel. The Intel process node is one step smaller, which corresponds to the more recent manufacturing technology.

Specification Differences

The two processors differ in several specification fields. The AMD Ryzen AI 7 445 has 6 cores, while the Intel Core Ultra 5 338H has 12 cores. Both have 12 threads. The AMD base clock is 2.00 GHz, the Intel base clock is 1.90 GHz. The AMD boost clock is 4.60 GHz, the Intel boost clock is 4.70 GHz. The AMD TDP is 28, the Intel TDP is 25.

The AMD socket is AMD Socket FP8, the Intel socket is Intel BGA 2540. The AMD architecture is Zen 5, the Intel architecture is Panther Lake. The AMD codename is Gorgon Point, the Intel codename is Panther Lake. The AMD generation is Ryzen AI 400 (Zen 5 / Zen 5c), the Intel generation is Ultra 5 (Panther Lake-H). The AMD process node is 4 nm, the Intel process node is 3 nm. The AMD foundry is TSMC, the Intel foundry is Intel.

Cache differs across all levels. AMD L1 is 80 KB per core, Intel L1 is 192 KB per core. AMD L2 is 1 MB per core, Intel L2 is 2.5 MB per core. AMD L3 is 4 MB, Intel L3 is 18 MB shared. Memory support differs: AMD supports DDR5 and LPDDR5X, Intel supports only LPDDR5X. Memory bandwidth is 89.6 GB/s for AMD and 136.5 GB/s for Intel. ECC memory is true for AMD, false for Intel. PCIe is Gen 4 with 14 lanes for AMD, Gen 5 with 4 lanes for Intel. Integrated graphics are Radeon 840M for AMD and Arc B370 for Intel.

The Verdict

The benchmark data is unambiguous: the Intel Core Ultra 5 338H is the superior processor across every single measured workload. The Intel part wins all 15 head-to-head tests, with margins ranging from -10.2% in PassMark integer math to -81.6% in PassMark find prime numbers. The Intel part also has a higher average benchmark score of 33989 compared to 26936 for AMD, and it sits at the 84th percentile versus the 79th percentile for AMD.

The Intel part's nearest rivals include the Intel Core Ultra 7 165H with an average score of 34083 and a delta of -0.3%, meaning the Core Ultra 5 338H is essentially at parity with that higher-tier chip. The AMD Ryzen AI 7 445's nearest rivals include the Intel Core i7-1370P at 26900 and the AMD Ryzen 5 7545U at 26849, showing that the AMD part sits in a lower performance tier entirely.

For users prioritizing raw compute performance, the Intel Core Ultra 5 338H is the clear choice. Its 12 physical cores, larger caches, higher memory bandwidth, and superior benchmark results across all categories make it the more capable processor. The AMD Ryzen AI 7 445 does not win a single benchmark test in this comparison, so there is no performance-based argument for selecting it over the Intel part.

The only areas where the AMD chip has advantages are in specific features: it supports ECC memory, supports both DDR5 and LPDDR5X memory types, and has a higher base clock. It also has more PCIe lanes at Gen 4, though the Intel chip uses a newer PCIe generation. These feature differences do not translate into benchmark wins.

Where Each One Wins

The Intel Core Ultra 5 338H wins in every benchmark category recorded. The largest wins are in specialized compute tasks: find prime numbers (304 versus 56), floating point math (84067 versus 39362), and physics (2697 versus 976). These are workloads that benefit from more physical cores, larger caches, and higher memory bandwidth, all of which the Intel part possesses.

The Intel part also dominates in system-level multi-threaded tests. PassMark multithread shows 28717 versus 18115, and Cinebench R23 multicore shows 16331 versus 10590. The data compression test (276539 versus 215812) and random string sorting (34082 versus 23488) also favor Intel substantially. These results align with the Intel chip's 12 physical cores and 18 MB of L3 cache.

The AMD Ryzen AI 7 445 has no benchmark wins to claim. Its closest result is in PassMark integer math, where it trails by only -10.2%. The single-thread tests show smaller margins, with Cinebench R23 single-core at -11.6% and PassMark single thread at -14.1%. The AMD chip's lower TDP of 28 versus 25 for Intel does not translate into any performance advantage in the recorded data.

For workloads that the AMD chip might handle better, the data provides no evidence. The AMD part's smaller core count and cache, combined with lower memory bandwidth, place it at a consistent disadvantage. The Intel Core Ultra 5 338H is the recommended processor for any workload represented in this database, from single-threaded tasks to heavily parallel compute. The AMD Ryzen AI 7 445, despite its Zen 5 architecture and 4 nm process, cannot match the Intel part in any measured metric.