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2026 comparison
Updated Jan 6, 2026
|Sources: Amazon, Manufacturer

Intel Core Ultra 9 Processor 285K vs Intel Core i5-12600K

The Intel Core Ultra 9 Processor 285K is the premium option here, offering a staggering 24 cores and 76MB of total cache. The i5-12600K, with a lower power consumption of 150W, is a more budget-friendly option without sacrificing too much performance, especially for gamers keen on speed and efficiency.

⚡ Max Turbo Power: 250W vs 150W🖥️ Cache: 76MB vs 29.5MB🔌 PCIe Lanes: both 20

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Intel Core Ultra 9 Processor 285K
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)
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Intel Core i5-12600K

Intel Core i5-12600K

4.7
(2,902)Amazon
Architecture Gen:Alder Lake (12th Gen Intel Core)
Socket Platform:LGA1700
Cores Threads:10 Cores (6 Performance + 4 Efficient) / 16 Threads
Base Boost Clock:P-core: 3.7–4.9 GHz / E-core: 2.8–3.6 GHz
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Comparison: Intel Core Ultra 9 Processor 285K vs Intel Core i5-12600K

Intel Core Ultra 9 Processor 285K

Intel Core Ultra 9 Processor 285K

4.6(512)Amazon
Intel Core i5-12600K

Intel Core i5-12600K

4.7(2,902)Amazon
Intel Core Ultra 9 Processor 285K

Intel Core Ultra 9 Processor 285K

Rating:4.6(512)Amazon
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)
Cache L2 L3:40 MB L2 + 36 MB L3 (76 MB Total)
TDP Power:125 W (Processor Base Power)
Max Turbo Power:250 W (Maximum Turbo Power)
Process Node:TSMC N3B (Compute Tile) / TSMC N6 (SoC/IO Tiles)
Memory Support:DDR5-6400 MT/s (Official); Dual-Channel; Up to 192 GB; ECC Support: Yes (W880 chipset required)
Memory Bandwidth Max:N/A (Dependent on RAM config, theoretical max ~102.4 GB/s @ 6400 MT/s)
Pcie Version:PCIe 5.0 (x20 lanes) + PCIe 4.0 (x4 lanes)
Pcie Lanes:24 Total (20 Gen5 + 4 Gen4 Direct to CPU)
Igpu:Intel Graphics (4 Xe-cores, 300 – 2000 MHz, Xe-LPG Architecture)
Instruction Features:Intel 64, AVX2, VNNI, AES-NI, VT-x, VT-d, SSE4.2; NPU: Intel AI Boost (13 TOPS)
Cooler Included:No (360mm+ Liquid Cooler highly recommended)
Max Temp:105°C (221°F) TjMax
Notes Limits: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).
Chipset Support: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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Intel Core i5-12600K

Intel Core i5-12600K

Rating:4.7(2,902)Amazon
Architecture Gen:Alder Lake (12th Gen Intel Core)
Socket Platform:LGA1700
Cores Threads:10 Cores (6 Performance + 4 Efficient) / 16 Threads
Base Boost Clock:P-core: 3.7–4.9 GHz / E-core: 2.8–3.6 GHz
Cache L2 L3:20 MB Intel® Smart Cache (L3) + 9.5 MB L2
TDP Power:125 W (Processor Base Power)
Max Turbo Power:150 W (Maximum Turbo Power)
Process Node:Intel 7 (10nm Enhanced SuperFin)
Memory Support:DDR5-4800 MT/s / DDR4-3200 MT/s (Up to 128 GB)
Memory Bandwidth Max:76.8 GB/s
Pcie Version:PCIe 5.0 and 4.0
Pcie Lanes:20 (16 PCIe 5.0 + 4 PCIe 4.0)
Igpu:Intel UHD Graphics 770 (32 EUs, 1.45 GHz Dyn Max)
Instruction Features:SSE4.1/4.2, AVX2, Intel 64, VT-x/VT-d, AES-NI
Cooler Included:No (Heatsink not included)
Max Temp:100°C (212°F) Tjunction
Notes Limits:Unlocked for overclocking. Requires LGA1700 motherboard (600/700 series). ECC supported on W680 chipset only.
Chipset Support:Intel 600 and 700 Series (Z690, B660, Z790, etc.)

✓ Pros:

  • Excellent price-to-performance ratio for gaming and multitasking
  • Hybrid architecture (P-cores + E-cores) improves efficiency
  • Future-proof support for PCIe 5.0 and DDR5 memory
  • Unlocked multiplier allows for overclocking (K-Series)
  • Integrated graphics useful for troubleshooting or Quick Sync

✗ Cons:

  • Thermal solution not included (requires robust aftermarket cooler)
  • High power consumption under full turbo load (150W)
  • Requires LGA1700 mounting bracket for older coolers

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Which one is better?

The Intel Core Ultra 9 Processor 285K is the better buy for most people - its 24 cores and 76MB cache crush the Intel Core i5-12600K.

Who should buy each?

Choose the Intel Core Ultra 9 Processor 285K if: you need maximum cores for heavy multitasking, want cutting-edge performance for gaming, or plan to future-proof your build with PCIe 5.0.
Choose the Intel Core i5-12600K if: you want excellent gaming performance without breaking the bank, need a reliable processor for everyday tasks, or are looking to do some light overclocking.

Conclusion

There is no wrong answer here. Focus on the features you will use daily and pick the model that aligns with them.

Frequently Asked Questions

+Which has better value?

Intel Core Ultra 9 Processor 285K excels if you value significantly improved power efficiency compared to 14th gen. Intel Core i5-12600K is better if you prioritize excellent price-to-performance ratio for gaming and multitasking. Pick based on your budget and daily use.

+Is this an independent review?

Yes. We use affiliate links for monetization, but recommendations are research-driven and unbiased.

+Do newer models exist?

Check release timelines from the manufacturers and compare pricing before you buy. We refresh this page when major updates land.

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