Intel Core i7-3820 vs Intel Core i9-14900K

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Core i7-3820 compared with Core i9-14900K

	IntelCore i7-3820	IntelCore i9-14900K
Overview
Released
Released	February 2012	October 2023
Cores and clocks
Cores
Cores	4	24 (8 performance, 16 efficiency) (better)
Threads
Threads	8	32 (better)
Base clock
Base clock	3.6 GHz	3.2 GHz
Boost clock
Boost clock	3.8 GHz	6 GHz (better)
L3 cache
L3 cache	10 MB	36 MB (better)
Cores
Cores	Four cores and eight threads; Sandy Bridge-E with Hyper-Threading. The multiplier is only partly unlocked, as both exact reviews explain; unlocked is false here because it is not fully unlocked.	8 Performance-cores and 16 Efficient-cores, with Hyper-Threading; codename Raptor Lake
Clocks
Clocks	Turbo Boost 2.0 up to 3.80 GHz from Intel’s current sheet; KitGuru’s engineering-sample review table instead states 3.90 GHz. Intel staff acknowledged release in February 2012; month precision is retained rather than treating the forum’s proposed day as verified sale.	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	10 MB Intel Smart Cache; L3 level confirmed by both exact reviews.	36 MB Intel Smart Cache (L3); 32 MB L2
Graphics and AI
Built-in graphics
Built-in graphics	No	Yes
Graphics
Graphics	No integrated graphics or Quick Sync, confirmed by KitGuru’s exact-model review.	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
Platform
Socket
Socket	LGA2011	LGA1700
Base power
Base power	130 W	125 W
Maximum power
Maximum power	–	253 W
Unlocked
Unlocked	No	Yes
Cooler in the box
Cooler in the box	No	–
Memory support
Memory support	Four channels of DDR3-1066/1333/1600; 51.2 GB/s maximum published bandwidth; no ECC. Intel’s anomalous 64.23 GB maximum-memory value is not normalised into a guessed capacity.	Up to DDR5 5600 MT/s or up to DDR4 3200 MT/s; 2 channels, up to 192 GB; ECC supported
PCIe
PCIe	40 CPU lanes; Intel’s current sheet lists PCIe 2.0, while both contemporary reviews describe PCIe 3.0 capability. The manufacturer’s current literal figure is retained with this conflict explicit.	PCIe 5.0 and 4.0; 20 lanes (Up to 1x16+4, 2x8+4); DMI 4.0 x8
Chipsets
Chipsets	Intel X79; LGA2011.	Intel 600 and 700 series
Process
Process	32 nm; Sandy Bridge-E.	Intel 7
Cooler
Cooler	Exact BX80619I73820 Newegg listing states cooling device not included. Intel gives a case-temperature limit of 66.8°C.	max operating temperature 100 °C; thermal specification PCG 2020A