AMD Ryzen AI Max 385 vs Intel Core i9-12900 Comparison

Where Each One Wins

The benchmark data splits cleanly into two distinct performance profiles. The Intel Core i9-12900 takes the majority of wins, 10 of 17 recorded head-to-head tests, while the AMD Ryzen AI Max 385 secures 7 wins. The distribution is not random: Intel dominates in heavily multi-threaded rendering workloads and raw compute-heavy integer and floating-point math, while AMD counters with superior single-core Cinebench R23 performance, specialized instruction throughput, and several efficiency-oriented workloads.

The Intel part wins decisively in every Cinebench R15 and R20 test, both single-core and multi-core, with margins ranging from 15.3% to 52.1%. Its multi-core lead in R15 is particularly stark, scoring 3299 against AMD's 1579, a 52.1% gap. This pattern continues into R20 where Intel leads by 45.1% in both single-core and multi-core tests. However, the gap narrows substantially in Cinebench R23 multi-core, where Intel's lead shrinks to just 15.9%, suggesting the AMD chip scales better as the workload duration increases.

AMD's wins concentrate in single-threaded Cinebench R23 (21.2% ahead), PassMark extended instructions (36.7% ahead), and PassMark prime number finding (36.4% ahead). The Ryzen chip also edges out Intel in PassMark multithread (0.3%), physics simulation (9.2%), and single-thread tests (1.4%). These results indicate AMD's architecture excels in instruction-level parallelism and lightly threaded scenarios, while Intel's hybrid core design remains formidable for sustained all-core rendering and math-heavy tasks.

Architecture Differences

The two processors embody fundamentally different design philosophies. The AMD Ryzen AI Max 385 uses the Zen 5 architecture on a 4 nm TSMC process, with the codename Strix Halo. It packs 8 cores and 16 threads, a compact 8-core configuration. Intel's Core i9-12900, by contrast, uses Alder Lake-S architecture on Intel's 10 nm process, featuring 16 cores and 24 threads. This core count difference directly explains Intel's multi-core dominance: it has twice the physical cores and 50% more threads.

The cache layouts also diverge. AMD provides 80 KB of L1 per core, 1 MB of L2 per core, and 32 MB of shared L3. Intel counters with the same 80 KB L1 per core, a slightly larger 1.25 MB L2 per core, and 30 MB of shared L3, which is 2 MB less than AMD's pool. The per-core L2 advantage for Intel (1.25 MB vs 1 MB) helps its individual cores, but AMD's larger L3 aggregate may benefit shared data access patterns.

Memory architecture is where the two differ most profoundly. AMD uses LPDDR5X memory with a quad-channel bus, delivering 256.0 GB/s of bandwidth. Intel supports both DDR4 and DDR5 through a dual-channel bus, achieving 76.8 GB/s maximum. AMD's bandwidth advantage is more than triple Intel's figure, which likely contributes to its strong performance in extended-instruction workloads and physics simulation. Both support ECC memory.

The sockets and platform targets differ accordingly. AMD fits into Socket FP11, a mobile-oriented platform, while Intel uses Socket 1700 for desktop. AMD's TDP is 55 watts, Intel's is 65 watts. Intel's boost clock reaches 5.10 GHz against AMD's 5.00 GHz, a marginal 0.10 GHz advantage. AMD's base clock is notably higher at 3.60 GHz versus Intel's 2.40 GHz, reflecting the efficiency of the smaller node. AMD's integrated graphics is the Radeon 8050S; Intel ships UHD Graphics 770. AMD provides 16 PCIe Gen 4 lanes, while Intel offers 16 PCIe Gen 5 lanes. Intel's multiplier is unlocked, AMD's is not.

Head-to-Head Benchmarks

The most decisive Intel victory comes in Cinebench R15 multi-core, where the i9-12900 scores 3299 against AMD's 1579. This 52.1% delta is the largest margin in either direction across all recorded tests. The gap persists in R20 multi-core (11994 vs 6583, 45.1%) and R15 single-core (262 vs 222, 15.3%). Intel also wins R20 single-core by the same 45.1% margin, scoring 1693 against 929. These results suggest Intel's hybrid architecture with performance and efficiency cores delivers sustained throughput that AMD's 8-core design cannot match in short rendering bursts.

The Cinebench R23 results tell a different story. Intel still wins multi-core, but only by 15.9% (18628 vs 15674). More importantly, AMD takes single-core R23 decisively, 2212 vs 1825, a 21.2% advantage. This single-core win is significant because it shows AMD's Zen 5 core has higher per-thread performance than Intel's best performance core, even though Intel's higher boost clock (5.10 GHz vs 5.00 GHz) gives it a nominal frequency edge.

PassMark tests reveal a mixed bag. Intel wins data compression by a razor-thin 0.3% (407899 vs 406505), data encryption by 14.1% (23203 vs 19926), floating-point math by 22.3% (91514 vs 71105), integer math by 16.1% (127512 vs 107046), and random string sorting by 0.8% (44070 vs 43725). AMD counters with extended instructions (33873 vs 24777, 36.7% ahead), find prime numbers (165 vs 121, 36.4% ahead), multithread (33705 vs 33608, 0.3% ahead), physics (1889 vs 1730, 9.2% ahead), and single-thread tests (4060 vs 4003, 1.4% ahead).

The multithread result is particularly telling: AMD's 8-core, 16-thread chip essentially ties Intel's 16-core, 24-thread processor, trailing by just 0.3%. This implies AMD's per-thread efficiency is exceptional, and its memory bandwidth advantage helps in mixed workloads. The physics simulation win (9.2%) and extended-instructions win (36.7%) further reinforce that AMD's architecture handles specialized instruction streams more efficiently, likely aided by the 256.0 GB/s memory bandwidth.

Specification Differences

The two processors differ across nearly every specification category. Core configuration: AMD has 8 cores and 16 threads; Intel has 16 cores and 24 threads. Clock speeds: AMD runs at 3.60 GHz base and 5.00 GHz boost; Intel runs at 2.40 GHz base and 5.10 GHz boost. Power: AMD's TDP is 55 watts; Intel's is 65 watts. Process node: AMD uses 4 nm TSMC; Intel uses 10 nm Intel. Die size: AMD measures 2x 70.6 mm²; Intel measures 215 mm².

Cache: AMD provides 1 MB L2 per core and 32 MB shared L3; Intel provides 1.25 MB L2 per core and 30 MB shared L3. Both have 80 KB L1 per core. Memory: AMD supports LPDDR5X with quad-channel bus and 256.0 GB/s bandwidth; Intel supports DDR4 and DDR5 with dual-channel bus and 76.8 GB/s bandwidth. Both support ECC.

Platform: AMD uses Socket FP11 and targets the mobile segment; Intel uses Socket 1700 and targets desktop. PCIe: AMD offers Gen 4 with 16 lanes; Intel offers Gen 5 with 16 lanes. Integrated graphics: AMD has Radeon 8050S; Intel has UHD Graphics 770. Overclocking: Intel's multiplier is unlocked; AMD's is locked. Release dates: AMD launched on 2025-01-05; Intel launched on 2022-01-03. Intel's launch MSRP is $519; AMD has no recorded launch MSRP.

FAQ

Q: Which processor has better single-core performance?

A: The AMD Ryzen AI Max 385 wins Cinebench R23 single-core by 21.2% (2212 vs 1825) and PassMark single-thread by 1.4% (4060 vs 4003). However, Intel wins Cinebench R15 single-core by 15.3% (262 vs 222) and R20 single-core by 45.1% (1693 vs 929), so the answer depends on the specific test.

Q: How large is Intel's multi-core advantage?

A: Intel leads by 52.1% in Cinebench R15 multi-core (3299 vs 1579), 45.1% in R20 multi-core (11994 vs 6583), and 15.9% in R23 multi-core (18628 vs 15674). In PassMark multithread, AMD nearly closes the gap, trailing by only 0.3% (33705 vs 33608).

Q: What explains AMD's wins in specialized workloads?

A: AMD leads by 36.7% in extended instructions (33873 vs 24777) and 36.4% in find prime numbers (165 vs 121). Its 256.0 GB/s memory bandwidth, which is more than triple Intel's 76.8 GB/s, likely contributes to these instruction-heavy results.

Q: Do the two processors use different memory technologies?

A: Yes. AMD supports LPDDR5X with a quad-channel bus and 256.0 GB/s bandwidth. Intel supports both DDR4 and DDR5 with a dual-channel bus and 76.8 GB/s bandwidth. Both support ECC memory.

Q: How do core counts compare?

A: Intel has 16 cores and 24 threads, while AMD has 8 cores and 16 threads. Intel's core count is double AMD's, but AMD's per-core efficiency allows it to tie Intel in PassMark multithread despite the core deficit.

Q: What are the power and platform differences?

A: AMD's TDP is 55 watts and it uses Socket FP11 for mobile. Intel's TDP is 65 watts and it uses Socket 1700 for desktop. Intel's multiplier is unlocked for overclocking; AMD's is locked. Intel launched at $519 MSRP on 2022-01-03; AMD launched on 2025-01-05 with no recorded MSRP.