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Silver rectangular CPU with gold contacts and green substrate visible

Intel

Intel Core Ultra 9 285K BX80768285K desktop processor

SKU CH-VJ95-MZGCV MPN BX80768285K

24-core Arrow Lake desktop CPU with 8 performance and 16 efficient cores, 5.7 GHz max turbo, 36 MB L3 cache, DDR5-6400 support, and integrated Intel graphics on LGA 1851 socket

  • Product nameCore Ultra 9 285K
  • CPU cores24-Core (8P+16E)
  • CPU socketLGA 1851
  • Maximum turbo clockIntel Thermal Velocity Boost Frequency: 5.7 GHz Intel Turbo
  • TDP rating125 W
  • Processor classDesktop

Model Core Ultra 9 285K

  • 24 cores (8 performance + 16 efficient) handle heavy multitasking
  • 7 GHz max turbo frequency speeds single-thread workloads
  • 3 nm TSMC N3B process improves performance per watt
  • 36 MB L3 and 40 MB L2 cache reduce latency
  • DDR5 6400 dual-channel support up to 256 GB memory

Built for Enthusiast Workloads

The Intel Core Ultra 9 285K is a 24-core desktop processor with 8 performance cores and 16 efficient cores. It targets enthusiasts and entry workstation users who need high single-thread speed and strong multi-thread throughput. The boxed unit ships without a cooler.

LGA 1851 Platform Limits

The CPU fits the new LGA 1851 socket and supports DDR5 6400 memory in dual-channel mode up to 256 GB. Base power is 125 W, while maximum turbo power will be higher under heavy loads. Integrated graphics run on the Xe LPG architecture at 300 MHz base frequency.

Check Cooler and Memory Clearance

Verify that your motherboard uses the LGA 1851 socket and a compatible chipset before purchase. Ensure your CPU cooler is rated for at least 125 W base power and clears the socket keep-out zone. Confirm DDR5 6400 modules are on the board's qualified vendor list for stable operation.

How it compares

Measured against everything we stock in Desktop Processors, at today’s prices. Recalculated every night.

Price $503.99
Pricier than about 82% of the 494 comparable items (median $149.99).
CPU cores 24-Core (8P+16E)
Higher than about 90% of the 271 comparable items (median 8).
Maximum turbo clock Intel Thermal Velocity Boost Frequency: 5.7 GHz Intel Turbo Boost Max Technology 3.0 Frequency: 5.6 GHz Performance-core Max Turbo Frequency: 5.5 GHz Efficient-core Max Turbo Frequency: 4.6 GHz
Higher than about 92% of the 246 comparable items (median 4.7 GHz).

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Specifications

Product
Brand nameIntel
Product lineCore Ultra 9 (Series 2)
Model nameBX80768285K
Product nameCore Ultra 9 285K
Performance
Working frequencyPerformance-core Base Frequency: 3.7 GHz
Efficient-core Base Frequency: 3.2 GHz
Processor
CPU cores24-Core (8P+16E)
CPU socketLGA 1851
Maximum turbo clockIntel Thermal Velocity Boost Frequency: 5.7 GHz
Intel Turbo Boost Max Technology 3.0 Frequency: 5.6 GHz
Performance-core Max Turbo Frequency: 5.5 GHz
Efficient-core Max Turbo Frequency: 4.6 GHz
TDP rating125 W
Processor classDesktop
Processor codenameArrow Lake
CPU threads24-Threads
Level 2 cache40 MB
Level 3 cache36 MB
Process node3 nm (TSMC N3B)
CPU instruction set64-Bit
CPU socket scalability1S Only
Max PCIe lanes24
Memory
Supported memoryDDR5 6400
Channel configuration2
Memory limit256 GB
Graphics
Built-in graphicsIntel Graphics
GPU base clock300 MHz
Ports & slots
PCIe generation5.0 / 4.0
Power
Maximum turbo power250 W
Size & build
Shipping weight0.32 kg
Package size165 × 153 × 64 mm
In the box
Included coolerNot included - Processor Only
More details
PCI express configurationsUp to 1 × 16+2 × 4, 2 × 8+2 × 4, 1 × 8+4 × 4

Other versions of this model

5 more in the same range

Questions about this item

Which Core Ultra 9 285K variant should I pick?

The boxed BX80768285K is the only retail version sold; it ships as a processor-only unit without a cooler, so plan for a separate LGA 1851-compatible cooling solution.

What does the 5.7 GHz Thermal Velocity Boost mean in daily use?

That is the peak single-core speed the chip can reach when power, temperature and workload allow; sustained all-core speeds will sit lower, typically around the 5.5 GHz P-core and 4.6 GHz E-core max turbo figures.

How does the DDR5 6400 memory controller limit my RAM choice?

The integrated controller officially supports up to DDR5 6400 at two channels with a maximum capacity of 256 GB; faster kits will run at 6400 unless the motherboard and BIOS enable higher validated speeds.

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