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Rectangular green printed circuit board with gold contact pads and silver metal heat spreader labeled Core Ultra 9 285

Intel

Intel Core Ultra 9 285 BX80768285 desktop processor

SKU CH-5RDA-J72H1 MPN BX80768285

24-core Arrow Lake desktop CPU with 8 performance and 16 efficient cores, 65W base power, up to 5.6GHz turbo, 36MB L3 cache, DDR5-6400 support and integrated Intel Graphics

  • Product nameCore Ultra 9 285
  • CPU cores24-Core (8P+16E)
  • CPU socketLGA 1851
  • Maximum turbo clockP-core Max Turbo Frequency: Up to 5.4 GHz E-core Max Turbo F
  • TDP rating65 W
  • Processor classDesktop
  • 24 performance and efficient cores handle heavy multitasking
  • Up to 5.6 GHz Thermal Velocity Boost accelerates single-thread speed
  • 65 W base power keeps cooling demands manageable
  • Supports up to 256 GB DDR5 6400 MT/s memory
  • Integrated Intel Graphics runs at up to 2.0 GHz max dynamic frequency

Core Ultra 9 285 24-core desktop processor

The Intel Core Ultra 9 285 is a 24-thread desktop CPU built on the Arrow Lake architecture with eight performance cores and sixteen efficient cores. It fits the LGA 1851 socket and supports up to 256 GB of DDR5 memory across two channels. Integrated Intel Graphics run at a 300 MHz base frequency.

3nm Arrow Lake architecture and 65W base power

The chip uses TSMC N3B 3nm manufacturing and operates at a 65 W base power with a 182 W maximum turbo power. Performance cores reach up to 5.4 GHz turbo while efficient cores hit 4.6 GHz, with Thermal Velocity Boost allowing 5.6 GHz. The 40 MB L2 and 36 MB L3 caches feed data to both core types.

Sustained load behaviour with 24 PCIe lanes

Under continuous multi-threaded workloads the processor manages power between performance and efficient cores to stay within thermal limits. The 24 PCI Express 5.0 and 4.0 lanes maintain bandwidth for storage and add-in cards during extended sessions. ECC memory support adds data integrity for long-running compute tasks.

How it compares

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

Price $408.99
Pricier than about 81% 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 P-core Max Turbo Frequency: Up to 5.4 GHz E-core Max Turbo Frequency: Up to 4.6 GHz Intel Thermal Velocity Boost Frequency: Up to 5.6 GHz Intel Turbo Boost Max Technology 3.0 Frequency: Up to 5.5 GHz
Higher than about 80% of the 246 comparable items (median 4.7 GHz).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameIntel
Product lineCore Ultra 9 (Series 2)
Model nameBX80768285
Product nameCore Ultra 9 285
Performance
Working frequencyPerformance-core Base Frequency: 2.5 GHz
Efficient-core Base Frequency: 1.9 GHz
Processor
CPU cores24-Core (8P+16E)
CPU socketLGA 1851
TDP rating65 W
Processor classDesktop
Processor codenameArrow Lake
CPU threads24-Threads
Level 2 cache40 MB
Level 3 cache36 MB
Process node3 nm (TSMC N3B)
CPU socket scalability1S Only
Max PCIe lanes24
Memory
Supported memoryUp to DDR5 6400 MT/s
Channel configuration2
Memory limit256 GB
ECC memorySupported
Graphics
Built-in graphicsIntel Graphics
GPU base clock300 MHz
Graphics max dynamic frequency2.0 GHz
Ports & slots
PCIe generation5.0 / 4.0
Power
Maximum turbo power182 W
Size & build
Shipping weight0.70 kg
Package size152 × 127 × 127 mm
Compatibility
Compatible desktop chipsetsIntel 800 Series Chipset
In the box
Included coolerIntel Laminar RH2
More details
PCI express configurationsUp to 1 × 16+2 × 4, 2 × 8+2 × 4, 1 × 8+4 × 4

Questions about this item

What socket and cooler mounting does the Core Ultra 9 285 require?

It uses the LGA 1851 socket. The boxed Intel Laminar RH2 cooler is included and mounts directly to the standard LGA 1851 retention mechanism.

What is the critical step when installing the LGA 1851 processor into the socket?

Align the processor notches with the socket keys, place it gently without force, then lower the retention lever fully until it locks; skipping the alignment check can bend the delicate LGA 1851 contacts.

What maintenance will the included Laminar RH2 cooler need over time?

Clean dust from the heatsink fins and fan blades periodically with compressed air; if the pre-applied thermal paste dries out after several years, remove the cooler, clean both surfaces with isopropyl alcohol, and apply fresh paste.

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