Intel Core 2 Duo E8400 vs Intel Core i7-14700K

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Core 2 Duo E8400 compared with Core i7-14700K

	IntelCore 2 Duo E8400	IntelCore i7-14700K
Overview
Released
Released	January 2008	October 2023
Cores and clocks
Cores
Cores	2	20 (8 performance, 12 efficiency) (better)
Threads
Threads	2	28 (better)
Base clock
Base clock	3 GHz	3.4 GHz
Boost clock
Boost clock	–	5.6 GHz
L3 cache
L3 cache	–	33 MB
Cores
Cores	Wolfdale; two cores and two threads, without Hyper-Threading. Intel’s archived exact E8400 specifications are attached to the maker datasheet distributed by Mouser.	8 Performance-cores and 12 Efficient-cores, with Hyper-Threading; codename Raptor Lake
Clocks
Clocks	Published operating frequency 3.00 GHz; 1333 MHz front-side bus. Intel explicitly lists no Turbo Boost, so no boost figure is supplied. Intel’s CES fact sheet specifies January 2008 availability for this exact model; TechSpot’s 1 February review confirms retail stock, with early shortages and prices above target. An exact first-sale day remains unverified.	P-core base 3.4 GHz, max turbo 5.5 GHz; E-core base 2.5 GHz, max turbo 4.3 GHz; Turbo Boost Max 3.0 5.6 GHz
Cache
Cache	6 MB shared L2 cache; no L3 figure supplied.	33 MB Intel Smart Cache (L3); 28 MB L2
Graphics and AI
Built-in graphics
Built-in graphics	No	Yes
Graphics
Graphics	No integrated graphics, explicitly confirmed by the exact BX80570E8400 Newegg listing; motherboard graphics are separate.	Intel UHD Graphics 770, 32 execution units, up to 1.6 GHz; outputs eDP 1.4b, DP 1.4a, HDMI 2.1; up to 4 displays
Platform
Socket
Socket	LGA775	LGA1700
Base power
Base power	65 W	125 W
Maximum power
Maximum power	–	253 W
Unlocked
Unlocked	–	Yes
Cooler in the box
Cooler in the box	Yes	–
Memory support
Memory support	Memory and I/O transactions pass through the front-side bus and chipset, as Intel’s datasheet states; supported memory types and capacity depend on the motherboard.	Up to DDR5 5600 MT/s or up to DDR4 3200 MT/s; 2 channels, up to 192 GB; ECC supported
PCIe
PCIe	–	PCIe 5.0 and 4.0; 20 lanes (Up to 1x16+4, 2x8+4); DMI 4.0 x8
Chipsets
Chipsets	–	Intel 600 and 700 series
Process
Process	45 nm; Wolfdale; LGA775; SSE4.1 support.	Intel 7
Cooler
Cooler	Intel’s boxed-processor specification confirms a supplied cooling solution; exact BX80570E8400 listing confirms heatsink and fan. Published processor TDP is 65 W.	max operating temperature 100 °C; thermal specification PCG 2020A