Intel Core 2 Duo E8400 vs Intel Core i9-13900KS

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Core 2 Duo E8400 compared with Core i9-13900KS

	IntelCore 2 Duo E8400	IntelCore i9-13900KS
Overview
Released
Released	January 2008	January 2023
Cores and clocks
Cores
Cores	2	24 (8 performance, 16 efficiency) (better)
Threads
Threads	2	32 (better)
Base clock
Base clock	3 GHz	3.2 GHz
Boost clock
Boost clock	–	6 GHz
L3 cache
L3 cache	–	36 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.	Raptor Lake; 8 Performance-cores with Hyper-Threading and 16 Efficient-cores
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 3.2 GHz and turbo 5.4 GHz; E-core base 2.4 GHz and turbo 4.3 GHz; Turbo Boost Max 3.0 5.8 GHz; Thermal Velocity Boost up to 6 GHz
Cache
Cache	6 MB shared L2 cache; no L3 figure supplied.	32 MB L2 cache
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; 300 MHz base and 1.65 GHz maximum dynamic clock
Platform
Socket
Socket	LGA775	LGA1700
Base power
Base power	65 W	150 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 192 GB; two channels; DDR5-5600 or DDR4-3200; ECC support depends on the motherboard and configuration
PCIe
PCIe	–	20 CPU lanes; PCIe 5.0 and 4.0
Chipsets
Chipsets	–	Intel recommends Z790 or Z690 with the latest BIOS
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.	Maximum operating temperature 100 °C; maker maximum turbo power 253 W. The 320 W Extreme profiles used in launch reviews are separate operating configurations.