AMD Ryzen AI Max 385 vs Intel Core i9-13900HX Comparison

Where Each One Wins

The benchmark split between these two mobile processors heavily favors the Intel Core i9-13900HX, which takes 15 of the 17 recorded head-to-head tests. However, the AMD Ryzen AI Max 385 claims two meaningful victories that define its niche. The AMD chip wins in Cinebench R23 single-core by 7.6%, scoring 2212 against Intel's 2056, and it also leads in PassMark extended instructions by 10.9%, with 33873 points versus 30550. These wins point toward workloads that depend on instruction-level efficiency and single-thread responsiveness.

The Intel part dominates the multi-threaded and throughput-oriented categories. In Cinebench R15 multicore, Intel leads by a massive 64.9%, scoring 4494.5 versus AMD's 1579. The R20 multicore test shows a 55.6% gap in Intel's favor (14836 vs 6583), and R23 multicore still sees Intel ahead by 43.8% (27900 vs 15674). This pattern repeats across PassMark's math and data workloads. Floating point math goes to Intel by 35.6% (110470 vs 71105), integer math by 31.5% (156175 vs 107046), and data encryption by 38% (32130 vs 19926). Data compression also favors Intel by 23.5% (531224 vs 406505).

The use-case split is clear. For sustained rendering, heavy math, encryption, compression, and any workload that can use many threads, the Intel Core i9-13900HX is the stronger choice by wide margins. The AMD Ryzen AI Max 385, meanwhile, offers a more efficient single-core result in one key test and superior extended instruction throughput, which may benefit specific scientific or media workloads that leverage those instruction sets. The Intel chip also edges out the AMD part in single-thread PassMark, though only by 0.5% (4081 vs 4060), making that category effectively a tie in practical terms.

Architecture Differences

The two processors come from fundamentally different design philosophies. AMD's Ryzen AI Max 385 uses the Zen 5 architecture on TSMC's 4 nm process, with a die size listed as 2x 70.6 mm². Intel's Core i9-13900HX uses Raptor Lake architecture on Intel's 10 nm process, with a die size of 257 mm². The manufacturing node difference is substantial, with AMD on a more advanced process.

Core counts diverge sharply. AMD provides 8 cores and 16 threads, while Intel provides 24 cores and 32 threads. This explains much of the multi-threaded performance gap. Cache configurations also differ. Both share 80 KB of L1 per core, but AMD uses 1 MB of L2 per core while Intel uses 2 MB per core. AMD's shared L3 is 32 MB, while Intel's is 36 MB.

Memory support differs. AMD uses LPDDR5X with a quad-channel memory bus and a recorded bandwidth of 256.0 GB/s. Intel supports both DDR4 and DDR5 with a dual-channel bus, and no bandwidth figure is recorded in the database. Both support ECC memory. PCIe connectivity also differs: AMD offers Gen 4 with 16 lanes (CPU only), while Intel offers Gen 5 with 20 lanes (CPU only).

The integrated graphics solutions are different tiers. AMD includes a Radeon 8050S GPU, while Intel includes UHD Graphics 770. The AMD part is not multiplier unlocked, while the Intel part is multiplier unlocked. The AMD chip uses AMD Socket FP11, while Intel uses Intel BGA 1964. The AMD processor was released in January 2025, while Intel's came in January 2023. Intel has a launch MSRP of $668, while AMD's launch MSRP is not recorded. Production status for both is listed as active.

FAQ

Q: Which processor wins in Cinebench R23 single-core?

A: The AMD Ryzen AI Max 385 wins with a score of 2212, which is 7.6% higher than the Intel Core i9-13900HX's 2056.

Q: How large is the multi-core performance gap in Cinebench R20?

A: The Intel Core i9-13900HX leads by 55.6% in Cinebench R20 multicore, scoring 14836 versus AMD's 6583.

Q: Do both processors support ECC memory?

A: Yes, both the AMD Ryzen AI Max 385 and the Intel Core i9-13900HX are listed with ECC memory support.

Q: What is the difference in core and thread counts?

A: The Intel Core i9-13900HX has 24 cores and 32 threads, while the AMD Ryzen AI Max 385 has 8 cores and 16 threads.

Q: Which processor has a higher boost clock?

A: The Intel Core i9-13900HX has a boost clock of 5.40 GHz, compared to the AMD Ryzen AI Max 385's 5.00 GHz.

Q: How do the two compare in PassMark single-thread performance?

A: The Intel Core i9-13900HX scores 4081, which is only 0.5% higher than the AMD Ryzen AI Max 385's 4060, making the difference nearly negligible.

Specification Differences

The two processors differ across nearly every major specification category.

• Cores: AMD has 8, Intel has 24
• Threads: AMD has 16, Intel has 32
• Base Clock: AMD runs at 3.60 GHz, Intel at 2.20 GHz
• Boost Clock: AMD reaches 5.00 GHz, Intel reaches 5.40 GHz
• Process Node: AMD uses 4 nm, Intel uses 10 nm
• Foundry: AMD uses TSMC, Intel uses Intel
• Die Size: AMD is 2x 70.6 mm², Intel is 257 mm²
• L2 Cache: AMD has 1 MB per core, Intel has 2 MB per core
• L3 Cache: AMD has 32 MB shared, Intel has 36 MB shared
• Memory Support: AMD uses LPDDR5X, Intel supports DDR4 and DDR5
• Memory Bus: AMD is quad-channel, Intel is dual-channel
• Memory Bandwidth: AMD is 256.0 GB/s, Intel has no recorded value
• PCIe: AMD is Gen 4 with 16 lanes, Intel is Gen 5 with 20 lanes
• Integrated Graphics: AMD has Radeon 8050S, Intel has UHD Graphics 770
• Socket: AMD uses Socket FP11, Intel uses BGA 1964
• Unlocked Multiplier: AMD is not unlocked, Intel is unlocked
• Release Date: AMD is January 2025, Intel is January 2023
• Launch MSRP: AMD has none recorded, Intel has $668

Head-to-Head Benchmarks

The head-to-head data shows a lopsided contest, but the margins vary considerably by workload. The Intel Core i9-13900HX's biggest win comes in Cinebench R15 multicore, where it scores 4494.5 against AMD's 1579, a 64.9% advantage. That is the largest delta in the entire dataset. Cinebench R20 multicore and single-core both show a 55.6% lead for Intel, with scores of 14836 versus 6583 and 2094 versus 929 respectively.

Cinebench R23 multicore narrows the gap somewhat, with Intel leading 27900 to 15674, a 43.8% margin. The PassMark suite shows consistent Intel advantages across several categories. Floating point math: Intel leads 110470 to 71105, a 35.6% gap. Integer math: Intel leads 156175 to 107046, a 31.5% gap. Physics: Intel leads 2645 to 1889, a 28.6% gap. Random string sorting: Intel leads 59199 to 43725, a 26.1% gap.

Data compression favors Intel by 23.5% (531224 vs 406505), and multithread performance shows a 21.7% Intel lead (43062 vs 33705). Data encryption shows a 38% Intel advantage (32130 vs 19926), while prime number finding gives Intel a 13.2% edge (190 vs 165). The narrowest Intel win is PassMark single-thread, where the margin is just 0.5% (4081 vs 4060).

The AMD Ryzen AI Max 385 takes two wins. The most notable is Cinebench R23 single-core, where AMD scores 2212 versus Intel's 2056, a 7.6% advantage. This is a meaningful result, as it shows the Zen 5 architecture delivering better single-thread performance in a current rendering benchmark despite Intel's higher boost clock. The other AMD win is PassMark extended instructions, 33873 versus 30550, a 10.9% margin. This suggests AMD's implementation handles advanced instruction sets more efficiently than Intel's Raptor Lake design.

Looking at the overall average benchmark scores, the Intel part sits at 46098 with an 89th percentile ranking among all CPUs, while AMD sits at 44309 with an 88th percentile. The nearest rivals listed for AMD include the Intel Core i9-13950HX at a 0.1% difference and the Intel Core i5-13600 at 0.2%. For Intel, the nearest rivals include the Intel Core Ultra 5 235 at 0.1% and the AMD Ryzen AI 9 HX 375 at 0.1%. These figures place both processors in a similar tier overall, despite the stark differences in individual workloads. The data shows that Intel's 24-core design delivers overwhelming throughput advantages, while AMD's 8-core Zen 5 part counters with superior single-core rendering and instruction extension efficiency.