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Intel Core Ultra 9 285K
Intel's Arrow Lake-S flagship for the new LGA1851 socket: 8 performance cores and 16 efficiency cores without Hyper-Threading, up to 5.7 GHz boost, and 76 MB of combined cache. It trades outright gaming leadership for markedly lower power draw than the chip it replaces, aimed at buyers mixing heavy multithreaded work with gaming on a fresh platform.
Pros
- 8 performance cores plus 16 efficiency cores (24 total) for strong multithreaded throughput
- 76 MB of combined cache (40 MB L2 + 36 MB L3), the largest of any Arrow Lake-S desktop part
- Native DDR5-6400 support and full PCIe 5.0 connectivity on the new Z890 platform
- Fully unlocked multiplier for overclocking
- Substantially lower power draw than the previous-generation flagship at similar or better multi-core performance, per review testing
Cons
- No cooler included, and the 250 W turbo power needs a serious cooling solution
- Requires a new LGA1851 motherboard; no backward compatibility with older Intel boards
- Drops Hyper-Threading, so thread count no longer scales the way previous-generation chips did
- Gaming performance in review testing is only on par with, or sometimes behind, the flagship it replaces
Outstanding
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the Intel Core Ultra 9 285K
General
- Announced
- 2024
- Socket
- LGA1851
- Process
- 3 nm
- Base TDP
- 125 W
- Max turbo power
- 250 W
- Unlocked multiplier
- Yes
- Cooler included
- No
Cores & Clocks
- Cores
- 24
- Performance cores
- 8
- Efficiency cores
- 16
- Threads
- 24
- Base clock
- 3.7 GHz
- Boost clock
- 5.7 GHz
- L2 cache
- 40 MB
- L3 cache
- 36 MB
Integrated GPU
- iGPU
- Intel Graphics
- iGPU clock
- 2,000 MHz
Memory
- Memory support
- DDR5-6400
- Max memory
- 256 GB
- Memory channels
- 2
Platform
- PCIe version
- 5
- CPU PCIe lanes
- 24
Benchmarks
- Geekbench 6 (single)
- 3,265Top 7%
- Geekbench 6 (multi)
- 22,091Top 5%
- Cinebench R23 (single)
- 2,382Top 2%
- Cinebench R23 (multi)
- 42,460Top 3%
- PassMark
- 67,224Top 3%
Quick answers
Is the Intel Core Ultra 9 285K good in 2026?
The Intel Core Ultra 9 285K earns an Inno Score of 90/100 (“Outstanding”) based on its specs and benchmark results. Intel's Arrow Lake-S flagship for the new LGA1851 socket: 8 performance cores and 16 efficiency cores without Hyper-Threading, up to 5.7 GHz boost, and 76 MB of combined cache. It trades outright gaming leadership for markedly lower power draw than the chip it replaces, aimed at buyers mixing heavy multithreaded work with gaming on a fresh platform.
What are the key specs of the Intel Core Ultra 9 285K?
Cores: 24 · Threads: 24 · Boost clock: 5.7 GHz · Socket: LGA1851
What are the closest alternatives to the Intel Core Ultra 9 285K?
Its closest rivals on InnoReviews are Intel Core i9-14900KS, Intel Core Ultra 7 270K Plus, AMD Ryzen 9 7950X3D — open the comparison pages for a spec-by-spec breakdown.
