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Core Ultra 9 285K vs Ryzen 9 9900X: specs and benchmark comparison

AIntel · Arrow Lake

Intel Core Ultra 9 285K

  • 24 cores / 24 threads
  • up to 5.7 GHz
  • LGA1851

October 24, 2024 · $589 at launch

BAMD · Zen 5

AMD Ryzen 9 9900X

  • 12 cores / 24 threads
  • up to 5.6 GHz
  • AM5

August 15, 2024 · $499 at launch

Short verdict

Intel Core Ultra 9 285K leads in every scenario with comparable benchmarks: multi-thread performance. This does not imply an advantage in tasks without benchmarks.

Compare with AI
← Core Ultra 9 285KRyzen 9 9900X →

  • Multi-thread performance

    A +23.9%

    Intel Core Ultra 9 285K leads in this scenario (up to 23.9% in comparable benchmarks).

No comparable benchmarks yet: single-thread performance, gaming (cpu-bound scenarios), power efficiency.

Advantages

Only measured and rated values: a noticeable benchmark gap and specs where more is better.

Where Core Ultra 9 285K is better4

  • Blender Benchmark 4.5.0 11.2% faster561 samples/min vs 505 samples/min

  • Cores 12 more24 (8P + 16E) vs 12

  • L2 cache 28 MB more40 MB vs 12 MB

  • Official memory speed 800 MT/s more6,400 MT/s vs 5,600 MT/s

Where Ryzen 9 9900X is better2

  • L3 cache 28 MB more64 MB vs 36 MB

  • Launch price $90 lower$499 vs $589

Benchmarks

Results are compared within one benchmark, one version and the same conditions.

  • Blender Benchmark 4.5.0

    CPU, sum of scenes monster + junkshop + classroom · samples/min, higher is better

    A ahead by 11.2%

    Position among tested models (89)

    B · 505A · 561
    0200400600800
    Each dot is one model’s median in this benchmark. The scale starts at zero, samples/min.

    Intel Core Ultra 9 285K is ahead by 11.2% in this benchmark.

    About the measurement and source
    A · Intel Core Ultra 9 285K

    561.4 samples/min · community measurement, sample 236 · November 14, 2026

    Blender Open Data (Blender Foundation)

    Median of 236 submissions (44 outliers excluded), interquartile range 545.02–579.08; submissions 2025-07-17 to 2026-10-22; CPU backend. Snapshot 2026-11-14.

    B · AMD Ryzen 9 9900X

    505 samples/min · community measurement, sample 368 · November 14, 2026

    Blender Open Data (Blender Foundation)

    Median of 368 submissions (16 outliers excluded), interquartile range 464.31–517.85; submissions 2025-07-17 to 2026-10-21; CPU backend. Snapshot 2026-11-14.

    difference = |A − B| ÷ the smaller value × 100%. The 5% noticeable threshold is a UX heuristic, not statistical significance.

    Cycles render in Blender Benchmark. Median of the sum of samples per minute over three scenes after removing outliers.

Other comparable benchmarks (6)
BenchmarkABDifference
Blender Benchmark 4.2.0CPU, sum of scenes monster + junkshop + classroom558.1450.6A +23.9%
Blender Benchmark 5.1.1CPU, sum of scenes monster + junkshop + classroom612520.1A +17.7%
Blender Benchmark 5.2.0CPU, sum of scenes monster + junkshop + classroom574.7511.2A +12.4%
Blender Benchmark 4.3.0CPU, sum of scenes monster + junkshop + classroom543.8446.9A +21.7%
Blender Benchmark 4.4.0CPU, sum of scenes monster + junkshop + classroom557.2480.2A +16%
Blender Benchmark 5.1.0CPU, sum of scenes monster + junkshop + classroom607.8537A +13.2%

Each benchmark version has its own scale: numbers are compared only within a row.

Reference results (5)
BenchmarkABDifference
Blender Benchmark 4.0.0CPU, sum of scenes monster + junkshop + classroom393.6474.9reference
Blender Benchmark 5.0.0CPU, sum of scenes monster + junkshop + classroom525.3452.3reference
Blender Benchmark 3.6.0CPU, sum of scenes monster + junkshop + classroom—331.4no pair
Blender Benchmark 4.1.0CPU, sum of scenes monster + junkshop + classroom—474.3no pair
Blender Benchmark 5.3.0CPU, sum of scenes monster + junkshop + classroom—545no pair

Each benchmark version has its own scale: numbers are compared only within a row.

Specifications

Cores and clocks

  • Cores

    A24 (8P + 16E)

    B12

    A: 12 more

    Cores of different types may differ in performance.

  • Threads

    A24

    B24

    equal

  • Base clock

    A3.7 GHz

    B4.4 GHz

    B: 0.7 GHz more

    For hybrid Intel CPUs, the P-core base clock is shown.

  • Max clock (Boost/Turbo)

    A5.7 GHz

    B5.6 GHz

    A: 0.1 GHz more

  • Unlocked multiplier

    Ano data

    Byes

    no data for A

Cache

  • L1 cache

    Ano data

    B960 KB

    no data for A

  • L2 cache

    A40 MB

    B12 MB

    A: 28 MB more

  • L3 cache

    A36 MB

    B64 MB

    B: 28 MB more

Platform

  • Socket

    ALGA1851

    BAM5

    differs

  • Process node

    ATSMC N3B

    BTSMC 4 nm FinFET

    differs

Memory and interfaces

  • Memory type

    ADDR5

    BDDR5

    equal

  • Memory channels

    A2

    B2

    equal

  • Official memory speed

    A6,400 MT/s

    B5,600 MT/s

    A: 800 MT/s more

    For controllers that support two generations, the speed for the newer memory type is shown.

  • Max memory capacity

    A256 GB

    B256 GB

    equal

  • PCI Express

    APCIe 5.0 and 4.0, 24 lanes

    BPCIe 5.0

    differs

  • Integrated graphics

    AIntel Graphics (4 Xe cores)

    BAMD Radeon Graphics (2 CU)

    differs

Power

  • TDP (AMD method)

    Ano data

    B120 W

    no data for A

    AMD TDP, AMD PPT, Intel Base Power (PL1) and Max Turbo Power (PL2) are different metrics and are not compared with each other. For laptop CPUs, the laptop maker configures the TDP.

  • Processor Base Power (Intel)

    A125 W

    Bno data

    no data for B

  • Maximum Turbo Power (Intel)

    A250 W

    Bno data

    no data for B

“More” does not always mean “better”: higher power draw or size is a system requirement, not an advantage (such bars are dimmed).

Platform compatibility

  • Socket Incompatible

    Intel Core Ultra 9 285K uses LGA1851, AMD Ryzen 9 9900X uses AM5. The CPUs are not interchangeable: switching requires a different motherboard.

  • Memory Needs checking

    Both controllers support DDR5. The motherboard determines the memory type, so check its specification.

Compare with AI

An AI model reviews the specs and benchmarks of this pair and gives a plain-language verdict on who each model suits.

AI verdict

Questions and answers

Do Intel Core Ultra 9 285K and AMD Ryzen 9 9900X fit the same motherboard?

No: Intel Core Ultra 9 285K uses LGA1851, while AMD Ryzen 9 9900X uses AM5.

How many cores and threads do Intel Core Ultra 9 285K and AMD Ryzen 9 9900X have?

Intel Core Ultra 9 285K: 24 cores / 24 threads. AMD Ryzen 9 9900X: 12 cores / 24 threads (manufacturer data).

Do these CPUs have integrated graphics?

Intel Core Ultra 9 285K: Intel Graphics (4 Xe cores). AMD Ryzen 9 9900X: AMD Radeon Graphics (2 CU).

Which is faster: Intel Core Ultra 9 285K or AMD Ryzen 9 9900X?

Intel Core Ultra 9 285K leads in every scenario with comparable benchmarks: multi-thread performance. This does not imply an advantage in tasks without benchmarks.

Data sources (4)
  • Intel — specifications of Intel Core Ultra 9 285Kchecked November 7, 2026
  • AMD — specifications of AMD Ryzen 9 9900Xchecked November 7, 2026
  • Blender Open Data (Blender Foundation) — benchmark Blender Benchmark 4.2.0, benchmark Blender Benchmark 4.5.0, benchmark Blender Benchmark 5.1.1, benchmark Blender Benchmark 5.2.0, benchmark Blender Benchmark 3.6.0, benchmark Blender Benchmark 4.0.0, benchmark Blender Benchmark 4.1.0, benchmark Blender Benchmark 4.3.0, benchmark Blender Benchmark 4.4.0, benchmark Blender Benchmark 5.0.0, benchmark Blender Benchmark 5.1.0, benchmark Blender Benchmark 5.3.0checked November 14, 2026
  • Wikipedia (English) — release date and launch pricechecked November 14, 2026

How we compare: methodology. Where the data comes from: sources.

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