Intel® Core™ Ultra 9 Processor 285K 24 cores (8 P-cores + 16 E-cores) up to 5.7 GHz

Get ultra-efficient with Intel Core Ultra desktop processors that improve both performance and efficiency so your PC can run cooler, quieter

Processor Speed5.7 GHzProcessor SocketLGA 1851Cache Memory Installed Size40 MB

About this item

  • Get ultra-efficient with Intel Core Ultra desktop processors that improve both performance and efficiency so your PC can run cooler, quieter, and quicker.
  • Core and Threads 24 cores (8 P-cores plus 16 E-cores) and 24 threads. Integrated Intel Graphics included
  • Performance Hybrid Architecture Integrates two core microarchitectures, prioritizing and distributing workloads to optimize performance
  • Performance Unlocked Up to 5.7 GHz unlocked. 40MB Cache
Category: PC PartsCPU ProcessorsRanked #99 of 616 in PC Parts
9.2Our score
Our verdict

Get ultra-efficient with Intel Core Ultra desktop processors that improve both performance and efficiency so your PC can run cooler, quieter

Ranked #99 in PC Parts · 4 things we like

Quick answer The Intel® Core™ Ultra 9 Processor 285K 24 cores scores 9.2/10 with us. Amazon owners rate it 4.6 out of 5 across 794 reviews, in line with the 4.6 average of the 8 cpu processors we track. It was listed at $498.00 on Amazon when we last checked in September 2026. Key facts: processor speed 5.7 GHz, processor socket LGA 1851, cache memory installed size 40 MB.

Intel Core Ultra 9 desktop processor 285K. Featuring PCIe 5.0 & 4.0 support and DDR5 support, unlocked Intel Core Ultra 9 desktop processors (series 2) are optimized for enthusiast gamers and serious creators and help deliver high performance. Compatible with Intel 800 Series Chipset based motherboards.

125W Processor Base Power.

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Product information

21 specifications
Processor SeriesCore i9
Processor Speed5.7 GHz
Processor SocketLGA 1851
Secondary Cache36 MB
Wattage125 watts
Cache Memory Installed Size40 MB
Processor Count24
Processor Number of Concurrent Threads24
Processor Core Count24
PlatformWindows 11
Item Dimensions L x W6.75"L x 6"W
Software Update Supported to Dateunknown
BrandIntel
Processor BrandIntel
Model NumberIntel Core Ultra 9 285K
Number of Items1
Global Trade Identification Number00675902154030, 05032037281928
Built-In MediaItem
Item Weight10.6 ounces
Mfr Part NumberBX80768285K
Warranty Description3 year manufacturer

Pros & cons

What we like
  • Get ultra-efficient with Intel Core Ultra desktop processors that improve both performance and efficiency so your PC can run cooler, quieter, and quicker.
  • Core and Threads 24 cores (8 P-cores plus 16 E-cores) and 24 threads. Integrated Intel Graphics included
  • Performance Hybrid Architecture Integrates two core microarchitectures, prioritizing and distributing workloads to optimize performance
  • Performance Unlocked Up to 5.7 GHz unlocked. 40MB Cache
What could be better

    Intel® Core™ Ultra 9 Processor 285K 24 cores: questions & answers

    Is the Intel® Core™ Ultra 9 Processor 285K 24 cores worth buying?

    Yes, it is one of the stronger picks in its group. We score the Intel® Core™ Ultra 9 Processor 285K 24 cores 9.2 out of 10. Amazon owners rate it 4.6 out of 5 across 794 reviews, in line with the 4.6 average of the 8 cpu processors we track.

    How much does the Intel® Core™ Ultra 9 Processor 285K 24 cores cost?

    It was listed at $498.00 on Amazon when we last checked in September 2026. That is more than the $380.00 median for cpu processors in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.

    What options does the Intel® Core™ Ultra 9 Processor 285K 24 cores come in?

    Amazon lists 3 options. Color: Ultra 7-270K Plus+Asus Tuf Gam Z890-Plus WiFi, Ultra7-265KF+Asus Z890 AYW Gaming WiFi W, Ultra 7-270K Plus+Asus Z890 AYW Gaming WiFi W. Pick an option on this page and the button opens exactly that model.

    What are the key specs of the Intel® Core™ Ultra 9 Processor 285K 24 cores?

    Processor Speed: 5.7 GHz; Processor Socket: LGA 1851; Cache Memory Installed Size: 40 MB. All 21 specifications are in the product information table on this page.

    What are good alternatives to the Intel® Core™ Ultra 9 Processor 285K 24 cores?

    Similar, well-rated cpu processors in our catalog: Intel Core i5 i5-4570 3.20 GHz Processor (8.8/10, 4.4 stars from 15 owners); AMD Ryzen™ 5 9600X 6-Core (9.8/10, 4.9 stars from 4,074 owners); AMD Ryzen 9 9950X3D 16-Core Processor (9.4/10, 4.7 stars from 1,871 owners).

    Customer reviews

    All reviews on Amazon
    4.6794 global ratings
    5 star90%
    4 star10%
    3 star0%
    2 star0%
    1 star0%

    Breakdown from the 10 most helpful reviews we imported.

    Z
    Zach
    Verified purchaseJanuary 13, 2025
    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, th

    S
    Squirrel
    Verified purchaseAugust 11, 2026
    Great CPU!

    I love this CPU! Matched with 48GB DDR5 MT8400 on an Asus ROG Maximus Apex motherboard and this thing rocks! Don't let the AMD lovers get to you, this product performs brilliantly for gaming, video rendering and overall everything else. I have been building PC's since the early 90's and have used MANY Intel and A FEW AMD CPU's and for all purpose computing this one blows them away. Low termperatures (although better with an AIO cooler) and absolute top performance. The PC I just built with this chip consistantly ranks 99th+ percentile in overall performance with Passmark Performance Test.

    A
    Antoine Hyde
    Verified purchaseJune 10, 2026
    Worth it. I am an Intel man

    I love Intel so I might not be the best judge but this processor is sound. Better be right. The tetracosa architecture is intels most advanced processor to date.My issue was with the intel store itself. They took way.... to long to ship it out considering. I was furious. The box is small and it was very expensive. You don't sell something like this and sit around on shipping. Its not good business because $600+ for a chip is a big deal. And AMD don't play around. Its solid fans that make your money because people have options and may not notice any difference between them

    B
    buildersRus
    Verified purchaseJuly 1, 2026
    Noticeable difference.

    Wow, just wow. What a difference this processor makes in the day-to-day computing speed. I thought the ultra 7 265k would be great and it's pretty good but the ultra 9 285k runs circles around it. I'm impressed.

    C
    Carlos Canales
    Verified purchaseJuly 10, 2025
    A step up in several ways from 13th/14th gen Intel

    I use this CPU in my gaming and video editing PC and it's honestly a step up from my 13th gen PC. Intel i9 CPUs have always run hot and the Core Ultra 9 is no exception. However, unlike the 13th/14th gen CPUs, you don't need a crazy cooling setup to keep it tamed under both light and heavy load(though for the sake of longevity I would still get at least a 360mm AIO or a 420mm AIO). Even a giant tower cooler like the Noctua NH-D15 Gen 2 will keep this CPU cooled properly. I don't do any heavy OCing, but the only high temps I see are during heavy rendering or compiling shaders for games(which th

    A
    Axel
    Verified purchaseApril 15, 2026
    This is the best read the review

    Listen, this thing is a beast, there are no problems about over heating/ over voltage problems, you can overclock it but you have to water cool if you want to do that, it can game very well runs cod and anything you can throw at it , but for rendering and models and ai work, it is the best ngl those 24cores are the way to go don’t listen to those reviews it’s a great chip and is worth the money as along as you can get the supporting mods, it’s so impressive that is can run 4 sticks of ddr5 at 4000hrz crazy ngl

    A
    Amazon Customer
    Verified purchaseDecember 29, 2025
    Blazing-fast desktop CPU for creators + heavy multitasking (platform upgrade required)

    Upgraded to the Intel Core Ultra 9 285K for a new desktop build and it’s been an awesome “do-everything” chip. The hybrid layout (24 cores: 8P + 16E) keeps the system feeling snappy even with a lot going on at once, and the high boost clocks (up to 5.7 GHz) make everyday work and bursty tasks feel instant.What I like:Serious throughput for demanding workloads (editing/encoding, compiling, VMs, multitasking)Unlocked if you like tuningIntegrated graphics is handy for troubleshooting or a no-GPU setupWhat to know before buying:This is LGA1851, so it’s a new motherboard platform (not a drop-in upg

    I
    IT Support
    Verified purchaseFebruary 4, 2026
    As expected. Nothing special, but as advertised. I would buy this again.

    As expected. Nothing special, but as advertised. I would buy this again.

    Customer reviews are shown as published on Amazon and are not written by Do Best Deal.