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⚡ Power your productivity with the Intel Core Ultra 9 — where speed meets smart efficiency.
The Intel Core Ultra 9 Desktop Processor 285K features a cutting-edge hybrid architecture with 24 cores (8 performance and 16 efficiency cores) and 24 threads, delivering up to 5.7 GHz unlocked turbo speeds. It supports PCIe 5.0, DDR5 memory, and Intel Optane for next-level performance, optimized for gamers and creators seeking a cooler, quieter, and faster PC experience. Compatible with Intel 800 series chipset motherboards, this 125W processor includes 40MB cache and integrated Intel graphics.





| ASIN | B0DFKC99VL |
| Best Sellers Rank | #15,769 in Computers ( See Top 100 in Computers ) #31 in CPUs |
| Brand | Intel |
| Built-In Media | Item |
| CPU manufacturer | Intel |
| CPU model | Intel Core Ultra 9 |
| CPU socket | LGA 1851 |
| CPU speed | 5.7 GHz |
| Cache Memory Installed Size | 40 MB |
| Customer Reviews | 4.7 out of 5 stars 796 Reviews |
| Global Trade Identification Number | 00675902154030, 05032037281928 |
| Item Dimensions L x W | 17.1L x 15.2W centimeters |
| Item Weight | 10.6 Ounces |
| Manufacturer | Intel |
| Mfr Part Number | BX80768285K |
| Model Number | Intel Core Ultra 9 285K |
| Number of Items | 1 |
| Number of Packs | 1 |
| Platform | Windows 11 |
| Processor Brand | Intel |
| Processor Core Count | 24 |
| Processor Count | 24 |
| Processor Number of Concurrent Threads | 24 |
| Processor Series | Intel Core Ultra 9 |
| Processor Socket | LGA 1851 |
| Processor Speed | 5.7 GHz |
| Secondary Cache | 36 MB |
| Secondary cache | 36 MB |
| Software Update Supported to Date | unknown |
| UPC | 735858550383 |
| Wattage | 125 watts |
J**F
Perfect
Working well
A**I
I like it
I like it It is stable, fast , without heating ... Easy to install
E**E
Top kwaliteit mooi design en super snel
Een prachtig stijlvol moederboard waar de kwaliteit van afstraalt. Een van de snelste Intel moederborden die nu verkrijgbaar zijn. Heel compleet en de installatie ging pijlsnel de nieuwste drivers zonder probleem snel geïnstalleerd. Het systeem krijgt na een test met mijn Core ultra 9 285K een Passmark rating van 99+ % tot de snelst presterende systemen
B**D
Great performance.
This processor doesn't get a lot of love from the influencers at large. This processor is a beast at general tasks, despite it not having hyperthreads (it doesn't need them). I've always used Intel processors as they have always performed well for the tasks I do. This is likely the best part of my new build, and all things considered, probably had the most value per dollar. Yes, I'm aware the socket 1851 architecture is short-lived, and I had an obsolete CPU before I assembled my system. Thing is, I hang onto my PCs for a very long time, and I don't purchase a new PC every year. I wanted performance now, and this CPU delivered. Sure, I could have waited for the new stuff to launch, but you could always be waiting endlessly. I'm very happy with this purchase. While this processor is capable of being overclocked, I have not overclocked my system.
A**L
Ultra 9 muy recomendable
Procesador , espectacular no da ningún problema nada que ver a las generaciones 13 y 14, es ponerlo y a correr , me sorprende también los bajos consumos que tiene y lo fresco que se mantiene, no te voy a engañar si haces overclocking si suben bastante las temperaturas y necesitas una buena refrigeración líquida. Pero en potencia y para jugar va muy bien,
P**E
Lightning fast and super stable.
I've been running this CPU for over a year now and never had an issue. It is incredibly stable and I haven't had a Blue screen or system glitch since building it. CPU runs very cool and maxes out at 45c. My use for this system is image processing and it runs 1 program only for astrophotography. No web browser no built in W11 apps. So my boot time is fast and nothing is running in the background to slow me down. My processing software uses 178Gb of memory and 20 cores continuously. If you follow the OC functions instructions in Bios and don't go stupid this will run flat out all the time. Which I have been doing for an average of 10 hours a day 6 days a week image processing. I set the overclock in Bios to S200 and XMP is on. This gives me 5.4GHz on all 24 cores permanently. All 4 ram slots are fitted with Corsair DDR5 5400MHz 48GB ram running at 5400MHz 192Gb total on a ASUS TUF Gaming Z890-PRO WIFI Intel ATX motherboard, 16+1+2+1(80A) power stages. If all 4 memory slots are full you can only run as fast as bank 2 will let you which is 5400MHz so using anything faster in all 4 is a waste of money. It's better to populate bank 1 to either 64Gb or 96Gb to max out your ram speed. Palit GeForce RTX 5070 Infinity 3 OC. 28Tb of Crucial storage. 3x 4Tb SSD 4x 4Tb Nvme Corsair 360mm Aio Corsair 850w PSU
Z**H
Extremely Strong Productivity Processor
I am a programmer who works with compiled programming languages in a large codebase all day long, and I bought this processor after seeing it at or near the top of many compiler benchmarks. Indeed, this processor cuts through my work like a knife through hot butter, and it is a joy to watch it speed through tasks! And unlike previous generations of Intel processors, it is quite easy to keep it cool even with cheap air coolers. Despite minor overclocking, the processor stays 10-20 °C away from thermal throttling even under hours of the most intense stress tests (like Cinebench). Furthermore, the processor has been quite stable for me, as I have not encountered any crashes. Keep in mind that many of the mixed/negative reviews are focused on gaming, where the gaming performance for the price is quite disappointing. If Intel manages to iron out all of the major issues (a very big if), this processor will exhibit gaming performance similar to an i9-14900K while being significantly-more power efficient. Accordingly, this could be a strong mixed gaming/productivity processor in the future, but in the meantime, I would not buy this processor if having top-tier gaming performance is important to you. For productivity-focused users like me, however, I would highly recommend this processor for many productivity tasks, where it is often the fastest consumer-grade processor ever made.
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