Intel Core Ultra 9 285K Desktop Processor
- 24 cores: 8 P-cores plus 16 E-cores
- Up to 5.7 GHz boost speed
- LGA 1851 socket, Intel 800 Series chipset boards
- PCIe 5.0 and 4.0, DDR5 support
- 125 watt base power, 36 MB secondary cache
- 3 year manufacturer warranty
Last refreshed Sep 9, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A top-tier unlocked desktop processor for enthusiast gaming and heavy creator work on the latest Intel platform. It needs a matching new board and DDR5 memory.
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ASIN: B0DFKC99VLCategory: CPU Processors
Overview
Gamers and creators building a flagship Intel desktop get a twenty-four core chip with the newest PCIe and DDR5 support. It is designed for boards on the matching new chipset family, and the description calls out enthusiast use.
Extra efficiency cores add multi-threaded headroom for rendering and encoding, and the high boost speed helps games. A new board and memory type are required, which turns an upgrade into a platform change.
Who it's for
An enthusiast or professional creator who wants the top of the line on the newest Intel platform. The unlocked part suits those who tune. Anyone staying on DDR4 or older boards cannot use it.
Pros and cons
- Very high core count
- High boost frequency
- Newest PCIe and DDR5 support
- Three year warranty
- Needs a matching new chipset board
- Needs DDR5 memory
- Cooler not listed
- High power for tuning
Performance notes
Performance cores drive games and heavy single threads while the many efficiency cores speed up rendering and background jobs. The boost frequency is a peak value and depends on cooling and board power delivery. PCIe and memory support shape results for fast storage and graphics cards.
Where it stands among cpu processors
- #8 most-searched brand and model of the 91 cpu processors lines we track (by search demand, not sales).
From the specs of the 16 cpu processors we list; not a test result.
Specifications
| Brand | Intel® |
|---|---|
| Dimensions & fit | |
| Cache Memory Installed Size | 40 MB |
| Item Dimensions L x W | 6.75 x 6 inches |
| Item weight | 10.6 ounces |
| Capacity & performance | |
| Processor Speed | 5.7 GHz |
| Base power | 125 watts |
| Warranty & support | |
| Warranty Description | 3 year manufacturer |
| Other details | |
| Processor Core Count | 24 (8 P-cores + 16 E-cores) |
| Processor Socket | LGA 1851 |
| Processor Number of Concurrent Threads | 24 |
| Secondary Cache | 36 MB |
| Platform | Windows 11 |
Closest rivals on specs
AMD Ryzen 7 5700 Desktop Processor- Cache Memory Installed Size 0.04 vs 0.02 GB (+100%)
- Item Weight 0.66 vs 0.95 pounds (-31%)
- Wattage 125 vs 65 watts (+92%)
Intel Core i5-12400F Desktop Processor- Cache Memory Installed Size 0.04 vs 0.02 GB (+122%)
- Item Weight 0.66 vs 1.04 pounds (-37%)
- Wattage 125 vs 65 watts (+92%)
AMD Ryzen 7 5800X3D Desktop Processor- Cache Memory Installed Size 0.04 vs 0.1 GB (-60%)
- Item Weight 0.66 vs 0.22 pounds (+200%)
- Wattage 125 vs 105 watts (+19%)
Frequently asked questions
What do I need to install the Core Ultra 9 285K?
A motherboard with an LGA 1851 socket and an Intel 800 Series chipset, DDR5 memory, and a separate cooler since none is listed.
Does it support PCIe 5.0?
Yes. The description lists PCIe 5.0 and 4.0 support and DDR5 support.
Is it unlocked?
Yes. The description calls it an unlocked desktop processor.
How many cores does the 285K have?
Twenty-four: 8 P-cores and 16 E-cores.