Intel Core i9-10940X vs Intel Core i9-14900K

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Core i9-10940X compared with Core i9-14900K

	IntelCore i9-10940X	IntelCore i9-14900K
Overview
Released
Released	2019	October 2023
Cores and clocks
Cores
Cores	14	24 (8 performance, 16 efficiency) (better)
Threads
Threads	28	32 (better)
Base clock
Base clock	3.3 GHz	3.2 GHz
Boost clock
Boost clock	4.8 GHz	6 GHz (better)
L3 cache
L3 cache	19.25 MB	36 MB (better)
Cores
Cores	Cascade Lake-X; Hyper-Threading and an unlocked multiplier, confirmed by Intel’s exact-model family product brief.	8 Performance-cores and 16 Efficient-cores, with Hyper-Threading; codename Raptor Lake
Clocks
Clocks	Turbo Boost Max 3.0 up to 4.80 GHz on the preferred cores; ordinary Turbo Boost 2.0 up to 4.60 GHz. Intel targeted November 2019 availability, and Newegg records this exact SKU first listed on 25 November 2019. A listing date alone does not establish first actual sale; conservative year precision is retained.	P-core base 3.2 GHz, max turbo 5.6 GHz; E-core base 2.4 GHz, max turbo 4.4 GHz; Turbo Boost Max 3.0 5.8 GHz; Thermal Velocity Boost 6 GHz
Cache
Cache	19.25 MB Intel Smart Cache; Intel’s exact-model product-brief table identifies it as L3 cache.	36 MB Intel Smart Cache (L3); 32 MB L2
Graphics and AI
Built-in graphics
Built-in graphics	No	Yes
Graphics
Graphics	No processor graphics, explicitly confirmed by Intel’s exact-model support table.	Intel UHD Graphics 770, 32 execution units, up to 1.65 GHz; outputs eDP 1.4b, DP 1.4a, HDMI 2.1; up to 4 displays
AI engine
AI engine	Intel Deep Learning Boost provides CPU inference instructions; this is not a separate NPU.	–
Platform
Socket
Socket	LGA2066	LGA1700
Base power
Base power	165 W	125 W
Maximum power
Maximum power	–	253 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	–
Memory support
Memory support	Up to 256 GB; four channels of DDR4-2933; 94 GB/s maximum published bandwidth; no ECC.	Up to DDR5 5600 MT/s or up to DDR4 3200 MT/s; 2 channels, up to 192 GB; ECC supported
PCIe
PCIe	48 CPU lanes; PCIe 3.0. The 72-lane family platform figure includes chipset lanes.	PCIe 5.0 and 4.0; 20 lanes (Up to 1x16+4, 2x8+4); DMI 4.0 x8
Chipsets
Chipsets	Intel X299; LGA2066.	Intel 600 and 700 series
Process
Process	14 nm; Cascade Lake-X.	Intel 7
Cooler
Cooler	Intel explicitly excludes a fan and heatsink from the boxed product. Intel’s support article confirms solder thermal interface material for this exact model; published junction limit 86°C.	max operating temperature 100 °C; thermal specification PCG 2020A