AMD Ryzen AI Max 390 vs Intel Xeon Platinum 8260M Comparison

Head-to-Head Benchmarks

The recorded data presents a decisive overall victory for the AMD Ryzen AI Max 390, which wins 15 of the 17 head-to-head benchmark comparisons. The Intel Xeon Platinum 8260M manages only two wins, both in specific data-handling workloads. Across the Cinebench suite, the AMD part is consistently faster by 18.5% in every test, whether single-core or multi-core. In Cinebench R23 multi-core, the AMD Ryzen AI Max 390 scores 36,064 against the Intel Xeon Platinum 8260M's 29,403; in single-core, the margin is 5,091 versus 4,151. The same 18.5% gap appears in Cinebench R15 and R20, indicating a uniform performance advantage rather than a workload-specific one.

The Passmark suite reveals a more nuanced picture. The Intel Xeon Platinum 8260M wins Passmark data compression with 573,896 against 487,145, a 17.8% advantage. It also takes Passmark random string sorting with 69,236 versus 53,113, a substantial 30.4% lead. These are the only two tests where the Intel processor comes out ahead. The AMD Ryzen AI Max 390 dominates the remaining Passmark tests, often by wide margins. The largest single-test gap is in Passmark single-thread performance, where AMD scores 4,028 against Intel's 2,320, a 42.4% difference. Passmark find prime numbers shows a 55.4% advantage for AMD (316 versus 141), and Passmark data encryption shows a 29.8% lead (25,097 versus 17,625). Other notable AMD wins include Passmark floating point math (90,594 versus 73,514, an 18.9% lead), Passmark integer math (146,519 versus 129,213, an 11.8% lead), and Passmark multithread (41,737 versus 34,592, a 17.1% lead).

The overall average benchmark scores place the two parts close together: the Intel Xeon Platinum 8260M averages 58,323, while the AMD Ryzen AI Max 390 averages 56,273. This places the Intel chip at the 92nd percentile among all CPUs and the AMD chip at the 91st percentile. The nearest rivals for the Intel part include the AMD Ryzen 7 9850X3D (average score 58,386, a 0.1% difference) and the Intel Core i9-14900 (average score 58,115, a 0.4% difference). The AMD Ryzen AI Max 390 sits near the AMD Ryzen AI 9 HX PRO 470 (average score 56,306, a 0.1% difference) and the Intel Core i9-14900HX (average score 56,004, a 0.5% difference). These clustering patterns suggest that despite the head-to-head gap in specific tests, both processors occupy a similar tier in the broader database.

Where Each One Wins

The AMD Ryzen AI Max 390 wins in nearly every measured category, making it the default choice for most workloads. Its consistent 18.5% advantage across all Cinebench versions indicates superior performance in rendering and general multi-threaded productivity. The Passmark results reinforce this: the AMD part leads in integer math, floating point math, physics, encryption, extended instructions, prime number finding, and multithread. The 42.4% single-thread advantage is particularly significant for applications that rely heavily on per-core performance, such as legacy software, spreadsheets, or lightly threaded design tools. The 55.4% lead in prime number finding suggests a strong showing in certain mathematical or cryptographic workloads.

The Intel Xeon Platinum 8260M, conversely, wins specifically in data compression and random string sorting. These are memory-bandwidth-sensitive and cache-friendly workloads that benefit from the Intel part's 35.75 MB of shared L3 cache and its 24-core, 48-thread configuration. The 30.4% lead in random string sorting is the largest margin either processor achieves in the entire head-to-head set, indicating a clear niche for the Intel part in data manipulation tasks. The 17.8% lead in data compression likewise points to strengths in archiving, database operations, or file-system workloads. For users whose primary tasks involve these specific operations, the Intel Xeon Platinum 8260M offers measurable benefits.

Architecture Differences

The two processors come from different architectural lineages with distinct design priorities. The Intel Xeon Platinum 8260M uses the Cascade Lake architecture, specifically Cascade Lake-SP, built on a 14 nm process at Intel's own foundry. It packs 24 cores and 48 threads with a base clock of 2.40 GHz and a boost clock of 3.90 GHz. The thermal design power is 165 watts, and it uses the Intel Socket 3647. The cache hierarchy includes 64 KB of L1 per core, 1 MB of L2 per core, and 35.75 MB of shared L3. It supports DDR4 memory with ECC enabled, and its market segment is listed as Server/Workstation. The transistor count is recorded at 8,000 million.

The AMD Ryzen AI Max 390 uses the Zen 5 architecture under the Strix Halo codename, built on a 4 nm process at TSMC. It has 12 cores and 24 threads, with a base clock of 3.20 GHz and a boost clock of 5.00 GHz. The thermal design power is significantly lower at 55 watts, and it uses the AMD Socket FP11. Its cache layout differs substantially: 80 KB of L1 per core, 1 MB of L2 per core, and 64 MB of shared L3. The memory support is LPDDR5X with a quad-channel bus and 256.0 GB/s of bandwidth. It also supports ECC memory. The integrated graphics are listed as Radeon 8050S, and the PCIe interface is Gen 4 with 16 lanes (CPU only). The die size is recorded as 2x 70.6 mm². The production status is active, and the market segment is Mobile.

These architectural differences explain the benchmark outcomes. The AMD part's higher boost clock (5.00 GHz versus 3.90 GHz) and newer 4 nm process contribute to its single-thread advantage. The larger 64 MB L3 cache likely aids the AMD part in several Passmark tests, though the Intel part's 24-core count gives it an edge in specific data-heavy workloads where more physical threads and its particular cache topology matter. The thermal design power difference is stark: 165 watts versus 55 watts, meaning the AMD part achieves higher performance in most tests while drawing far less power. The memory bandwidth advantage (256.0 GB/s versus unspecified for Intel) and the quad-channel LPDDR5X support also factor into the AMD part's strong showing in memory-intensive tasks.

FAQ

Q: Which processor has a higher single-thread performance?

A: The AMD Ryzen AI Max 390 is faster in single-thread tests. In Passmark single-thread, it scores 4,028 versus 2,320 for the Intel Xeon Platinum 8260M, a 42.4% advantage. Cinebench R23 single-core shows 5,091 versus 4,151, an 18.5% gap.

Q: Does the Intel Xeon Platinum 8260M win any benchmarks?

A: Yes, it wins two tests. It leads Passmark data compression with 573,896 versus 487,145 (a 17.8% advantage) and Passmark random string sorting with 69,236 versus 53,113 (a 30.4% advantage).

Q: What is the core and thread count difference?

A: The Intel Xeon Platinum 8260M has 24 cores and 48 threads, while the AMD Ryzen AI Max 390 has 12 cores and 24 threads. Despite having half the cores and threads, the AMD part wins 15 of 17 head-to-head benchmarks.

Q: How do the cache sizes compare?

A: The Intel part has 35.75 MB of shared L3, while the AMD part has 64 MB of shared L3. Both have 1 MB of L2 per core. The L1 per core differs: 64 KB for Intel versus 80 KB for AMD.

Q: What is the thermal design power difference?

A: The Intel Xeon Platinum 8260M has a TDP of 165 watts, while the AMD Ryzen AI Max 390 has a TDP of 55 watts. The AMD part achieves higher performance in most tests while operating at a much lower power envelope.

Q: Which processor has a higher average benchmark score?

A: The Intel Xeon Platinum 8260M has a slightly higher average benchmark score of 58,323, compared to 56,273 for the AMD Ryzen AI Max 390. Both are in the 91st or 92nd percentile among all CPUs.

Specification Differences

The two processors differ in nearly every core specification. The Intel Xeon Platinum 8260M has 24 cores and 48 threads, while the AMD Ryzen AI Max 390 has 12 cores and 24 threads. Base clocks are 2.40 GHz for Intel and 3.20 GHz for AMD; boost clocks are 3.90 GHz and 5.00 GHz, respectively. The thermal design power is 165 watts for Intel and 55 watts for AMD. The socket types differ: Intel Socket 3647 versus AMD Socket FP11. The architecture is Cascade Lake for Intel and Zen 5 for AMD, with codenames Cascade Lake-SP and Strix Halo.

The process node differs: 14 nm for Intel (foundry: Intel) versus 4 nm for AMD (foundry: TSMC). The Intel die size is not recorded, while the AMD die size is 2x 70.6 mm². The transistor count for Intel is 8,000 million, while AMD's is not listed. Cache configurations differ in L1 (64 KB per core for Intel versus 80 KB per core for AMD) and L3 (35.75 MB shared for Intel versus 64 MB shared for AMD); L2 is 1 MB per core for both. Memory support is DDR4 for Intel and LPDDR5X for AMD, with AMD listing a quad-channel bus and 256.0 GB/s bandwidth. Both support ECC memory. The Intel part has no integrated graphics listed, while the AMD part includes Radeon 8050S. The PCIe specification is not listed for Intel, while AMD lists Gen 4 with 16 lanes (CPU only). The market segment is Server/Workstation for Intel and Mobile for AMD. The AMD part has an active production status, while Intel's is not listed. Release dates are December 10, 2018 for Intel and January 5, 2025 for AMD. Neither part has a launch MSRP recorded.

The Verdict

The data points to the AMD Ryzen AI Max 390 as the stronger performer for the vast majority of workloads. It wins 15 of 17 head-to-head benchmarks, including every Cinebench test and most Passmark tests. Its single-thread advantage is substantial (42.4% in Passmark), its multi-thread performance is consistently 17% to 18.5% ahead in Cinebench, and it does so with a 55-watt TDP compared to Intel's 165 watts. The 64 MB L3 cache and higher boost clock give it clear advantages in rendering, encryption, math operations, and general productivity.

The Intel Xeon Platinum 8260M should be selected for workloads that specifically benefit from its data compression and random string sorting strengths. Its 24-core, 48-thread configuration and 35.75 MB L3 cache deliver a 17.8% lead in data compression and a 30.4% lead in random string sorting. For server or workstation environments where these tasks are dominant, the Intel part offers measurable benefits. Its higher average benchmark score (58,323 versus 56,273) also places it at the 92nd percentile, slightly above the AMD part's 91st percentile.

For most users, the AMD Ryzen AI Max 390 is the recommended choice based on the recorded benchmarks. It achieves superior results in nearly every category while using significantly less power and offering integrated graphics. The Intel Xeon Platinum 8260M remains a viable option for niche data-processing roles, but the benchmark data does not support a broader recommendation for it over the AMD part.