Intel Core i5-14400F vs Intel Core i7-3960X Extreme Edition

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Core i5-14400F compared with Core i7-3960X Extreme Edition

	IntelCore i5-14400F	IntelCore i7-3960X Extreme Edition
Overview
Released
Released	January 2024	November 2011
Cores and clocks
Cores
Cores	10 (6 performance, 4 efficiency) (better)	6
Threads
Threads	16 (better)	12
Base clock
Base clock	2.5 GHz	3.3 GHz
Boost clock
Boost clock	4.7 GHz (better)	3.9 GHz
L3 cache
L3 cache	20 MB (better)	15 MB
Cores
Cores	6 Performance-cores and 4 Efficient-cores, with Hyper-Threading; codename Raptor Lake	Six cores and twelve threads with Hyper-Threading; fully unlocked multiplier confirmed by Intel’s exact product brief. Intel states that VT-d requires C2 stepping.
Clocks
Clocks	P-core base 2.5 GHz, max turbo 4.7 GHz; E-core base 1.8 GHz, max turbo 3.5 GHz	3.30 GHz base and up to 3.90 GHz Turbo Boost 2.0. Intel gives Q4 2011; EE Times’ contemporary 14 November report quotes Intel confirming the exact model is available now. Newegg’s earlier listing date alone does not establish sale.
Cache
Cache	20 MB Intel Smart Cache (L3); 9.5 MB L2	15 MB shared L3 cache.
Graphics and AI
Built-in graphics
Built-in graphics	No	No
Graphics
Graphics	None; a graphics card is required	Intel’s exact-model Extreme Edition chart lists no processor graphics.
Platform
Socket
Socket	LGA1700	LGA2011
Base power
Base power	65 W	130 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 across four DDR3-1066/1333/1600 channels; maximum 51.2 GB/s bandwidth, without ECC.
PCIe
PCIe	PCIe 5.0 and 4.0; 20 lanes (Up to 1x16+4, 2x8+4); DMI 4.0 x8	40 PCIe 2.0 lanes in Intel’s current exact specification page.
Process
Process	Intel 7	32 nm; Sandy Bridge-E. Package 52.5 × 45.0 mm; Intel’s 66.8°C limit is TCASE, not junction temperature.
Cooler
Cooler	max operating temperature 100 °C; thermal specification PCG 2020C	Intel explicitly says the boxed product has no fan or heatsink. Requires separate LGA2011-compatible cooling; the original product brief names X79.