Intel Core Ultra 9 285K
- Cores: 24
- L3 cache: 36MB (shared)
- TDP: 125 W (max. boost up to 250 W)
- Transistor size: 3 nm
Core Ultra 9 285K - desktop processor produced by Intel for socket FCLGA-1851 that has 24 cores and 24 threads. The base clock frequency of the CPU is 3700 MHz, but due to Turbo Boost technology, it can perform up to 5500 MHz. The size of the L3 cache is 36 MB. Please note that this chip has integrated graphics Intel Arc iGPU (4-Cores).
Review
Compare Intel Core Ultra 9 285K with other CPUs
Test in Benchmarks
Performance test of Intel Core Ultra 9 285K in benchmarksCinebench
Cinebench Scores - 11th place
GeekBench v6
| File compression | 1560 MB/sec |
| Clang compilation | 242.2 Klines/sec |
| HTML 5 Browser | 479.5 pages/sec |
| PDF Renderer | 622.1 Mpixels/sec |
| Text processing | 371.2 pages/sec |
| Background blur | 95.4 images/sec |
| Photo processing | 164.2 images/sec |
| Ray tracing | 52.3 Mpixels/sec |
PassMark
| Integer math | 172.3 GOps/sec |
| Floating point math | 224.2 GOps/sec |
| Find prime numbers | 542M Primes/sec |
| Random string sorting | 94.9M Strings/sec |
| Data encryption | 57.7 GBytes/sec |
| Data compression | 789.7 MBytes/sec |
| Physics | 3933 Frames/sec |
| Extended instructions | 62.3B Matrices/sec |
Blender
Performance Per Watt
| Cinebench 2024 / Watt | 18.1 PPW |
| Geekbench 6 Multi / Watt | 184.8 PPW |
| Passmark CPU Mark / Watt | 537.8 PPW |
| Blender / Watt | 4.44 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Recent User Tests
| Date | Benchmark | Result |
|---|---|---|
| π 2026-06-17 (Olafur Torfi) | Cinebench 2024 | 142 / 2242 |
| π 2026-02-01 (aDamatGeek) | Cinebench 2024 | 142 / 2383 |
| π 2026-01-29 (GeneralJeep) | Geekbench 6 CPU | 3134 / 21707 |
| π 2025-12-31 (Szymon919191) | Cinebench 2024 | 141 / 2261 |
| π 2025-12-26 (Bill) | Geekbench 6 CPU | 3207 / 22197 |
| π 2025-12-26 (Bill) | Cinebench 2024 | 137 / 2140 |
| π 2025-07-24 (Lupusdeus1) | Cinebench 2024 | 149 / 2518 |
| π 2025-06-11 (Andre) | Cinebench 2024 | 143 / 2416 |
Specifications
Core Ultra 9 285K technical specificationsGeneral
| Vendor | Intel |
| Released | October 11, 2024 |
| Type | Desktop |
| Instruction Set | x86-64 |
| Codename | Arrow Lake |
| Model number | 285K |
| Integrated GPU | Arc iGPU (4-Cores) |
| AMD Equivalent | - AMD Ryzen 9 9950X |
Intel CPU rating - 3rd place
CPU
| P-Cores | 8 |
| P-Threads | 8 |
| Base Frequency (P) | 3.7 GHz |
| Turbo Boost Frequency (P) | 5.5 GHz |
| E-Cores | 16 |
| E-Threads | 16 |
| Base Frequency (E) | 3.2 GHz |
| Turbo Boost Frequency (E) | 4.6 GHz |
| Total Cores | 24 |
| Total Threads | 24 |
| Bus Frequency | 100 MHz |
| Multiplier | 37x |
| L1 Cache | 192K (per core) |
| L2 Cache | 3MB (per core) |
| L3 Cache | 36MB (shared) |
| Unlocked Multiplier | Yes |
Package
| Fabrication Process | 3 nm |
| TDP (PL1) | 125 W |
| Max. Boost TDP (PL2) | 250 W |
| Socket | FCLGA-1851 |
| Peak Temperature | 105Β°C |
Desktop CPU ranking - 8th place
iGPU
| Integrated Graphics | Intel Arc iGPU (4-Cores) |
| GPU Base Clock | 300 MHz |
| GPU Boost Clock | 2000 MHz |
| Shading Units | 512 |
| TMUs | 32 |
| ROPs | 16 |
| Execution Units | 64 |
| TGP | 14 W |
See also: Intel Arc iGPU (4-Cores) β integrated graphics of Intel Core Ultra 9 285K
Memory Support
| Memory Types | - DDR5-6400 |
| Max. Memory Size | 192 GB |
| Memory Channels | 2 |
| Max. Memory Bandwidth | 102.4 GB/s |
| ECC Support | Yes |
Misc
| Official Site | Intel Core Ultra 9 285K official page |
| PCI Express Version | 5.0 |
| PCI Express Lanes | 24 |
| Technologies | - Compute: ABM, ADX, AI Boost 3.0, AVX-VNNI, BMI1, BMI2, CLMUL, DLBoost 3.0, F16C, SHA
- Performance: CFET, EIST, TBMT 3.0, TBT 2.0, TVB, Thread Director
- Virtualization: VT-d, VT-rp, VT-x
- Security: MBEC, RDRAND, SIPP, TDT, TXT, XD bit, vPro |
