Intel Core Ultra 9 Processor 285K
Core Ultra 9 (Series 2): 24C/24T (8P+16E), 3.7–5.7 GHz, 76MB Total Cache, LGA1851, DDR5, PCIe 5.0. 125W TDP. Cooler not included.
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Key specifications
Core Ultra 200S Series (Arrow Lake-S)
Socket LGA1851
24 Cores (8P + 16E) / 24 Threads
P-Core: 3.7 / 5.5 GHz; E-Core: 3.2 / 4.6 GHz; Max Turbo: 5.7 GHz (TVB)
40 MB L2 + 36 MB L3 (76 MB Total)
125 W (Processor Base Power)
250 W (Maximum Turbo Power)
TSMC N3B (Compute Tile) / TSMC N6 (SoC/IO Tiles)
DDR5-6400 MT/s (Official); Dual-Channel; Up to 192 GB; ECC Support: Yes (W880 chipset required)
N/A (Dependent on RAM config, theoretical max ~102.4 GB/s @ 6400 MT/s)
PCIe 5.0 (x20 lanes) + PCIe 4.0 (x4 lanes)
24 Total (20 Gen5 + 4 Gen4 Direct to CPU)
Intel Graphics (4 Xe-cores, 300 – 2000 MHz, Xe-LPG Architecture)
Intel 64, AVX2, VNNI, AES-NI, VT-x, VT-d, SSE4.2; NPU: Intel AI Boost (13 TOPS)
No (360mm+ Liquid Cooler highly recommended)
105°C (221°F) TjMax
First flagship Intel desktop CPU to drop Hyper-Threading (24 threads total vs 32 on 14900K). Higher thermal limit (105°C) by design. Requires LGA1851 motherboard (Z890).
Intel 800 Series (Z890, B860, H810, W880)
✓ Pros
- Significantly improved power efficiency compared to 14th Gen
- Lower operating temperatures in gaming workloads
- Modern platform connectivity: Integrated Thunderbolt 4, WiFi 7, and more PCIe 5.0 lanes
✗ Cons
- Removal of Hyper-Threading reduces performance in some specific multi-threaded apps
- Requires new LGA1851 motherboard (no backward compatibility)
- Gaming performance is often similar to or slightly behind the i9-14900K
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Frequently Asked Questions
+ Is the Intel Core Ultra 9 Processor 285K worth buying in 2026?
Yes, the Intel Core Ultra 9 Processor 285K is worth it if you prioritize significantly improved power efficiency compared to 14th gen. With a 4.6/5 rating, it stands out in the processors category. However, consider that removal of hyper-threading reduces performance in some specific multi-threaded apps. Check our detailed verdict above.
+ What are the main specs of Intel Core Ultra 9 Processor 285K?
Key specifications include: Architecture Gen: Core Ultra 200S Series (Arrow Lake-S), Socket Platform: Socket LGA1851, Cores Threads: 24 Cores (8P + 16E) / 24 Threads, Base Boost Clock: P-Core: 3.7 / 5.5 GHz; E-Core: 3.2 / 4.6 GHz; Max Turbo: 5.7 GHz (TVB). See the full specifications table above for complete technical details.
+ Where is the best place to buy Intel Core Ultra 9 Processor 285K?
For US buyers, Amazon offers the best combination of competitive pricing, fast Prime shipping, easy returns, and reliable warranty support. Use our affiliate links above to check current prices and availability.
+ What are the pros and cons of Intel Core Ultra 9 Processor 285K?
Pros: Significantly improved power efficiency compared to 14th Gen; Lower operating temperatures in gaming workloads; Modern platform connectivity: Integrated Thunderbolt 4, WiFi 7, and more PCIe 5.0 lanes. Cons: Removal of Hyper-Threading reduces performance in some specific multi-threaded apps; Requires new LGA1851 motherboard (no backward compatibility). See our detailed breakdown above for the complete analysis.
+ How does Intel Core Ultra 9 Processor 285K compare to alternatives?
We have 18+ detailed comparisons with similar processors. Popular matchups include AMD Ryzen 7 7800X3D and AMD Ryzen 9 7950X3D. Check the comparison section above.
+ Are PageBen reviews independent and unbiased?
Yes. PageBen is an independent review site. While we use affiliate links for monetization, our recommendations are research-driven and based on objective specifications, user feedback, and real-world performance. We are not sponsored by manufacturers.
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