Intel Core i5-14400F vs Intel Core i5-7640X

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Core i5-14400F compared with Core i5-7640X

	IntelCore i5-14400F	IntelCore i5-7640X
Overview
Released
Released	January 2024	June 2017
Cores and clocks
Cores
Cores	10 (6 performance, 4 efficiency) (better)	4
Threads
Threads	16 (better)	4
Base clock
Base clock	2.5 GHz	4 GHz
Boost clock
Boost clock	4.7 GHz (better)	4.2 GHz
L3 cache
L3 cache	20 MB (better)	6 MB
Cores
Cores	6 Performance-cores and 4 Efficient-cores, with Hyper-Threading; codename Raptor Lake	Four cores and four threads; unlocked multiplier confirmed by Tom’s Hardware France’s exact-model table and overclocking test.
Clocks
Clocks	P-core base 2.5 GHz, max turbo 4.7 GHz; E-core base 1.8 GHz, max turbo 3.5 GHz	Turbo Boost 2.0 up to 4.20 GHz; no Turbo Boost Max 3.0 in Intel’s exact comparison-chart row. Intel’s press-kit record names 26 June 2017 availability for the first Core X processors, and its August record confirms the four- to ten-core models were already on shelves; conservative month precision is retained.
Cache
Cache	20 MB Intel Smart Cache (L3); 9.5 MB L2	6 MB cache; L3 designation confirmed by Tom’s Hardware France’s exact-model table.
Graphics and AI
Built-in graphics
Built-in graphics	No	No
Graphics
Graphics	None; a graphics card is required	No processor graphics, explicitly confirmed by Intel’s exact-model comparison chart.
Platform
Socket
Socket	LGA1700	LGA2066
Base power
Base power	65 W	112 W
Maximum power
Maximum power	148 W	–
Unlocked
Unlocked	No	Yes
Cooler in the box
Cooler in the box	–	No
Memory support
Memory support	Up to DDR5 4800 MT/s or up to DDR4 3200 MT/s; 2 channels, up to 192 GB	Up to 64 GB; two channels of DDR4-2666; 42 GB/s maximum published bandwidth; no ECC.
PCIe
PCIe	PCIe 5.0 and 4.0; 20 lanes (Up to 1x16+4, 2x8+4); DMI 4.0 x8	16 CPU PCIe 3.0 lanes; up to 1×16, 2×8 or 1×8 plus 2×4.
Chipsets
Chipsets	–	Intel X299; LGA2066.
Process
Process	Intel 7	14 nm; Kaby Lake-X.
Cooler
Cooler	max operating temperature 100 °C; thermal specification PCG 2020C	Intel excludes a fan and heatsink from the boxed product; junction limit 100°C.