Intel Core i7-7820X vs Intel Core i9-14900K

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Core i7-7820X compared with Core i9-14900K

	IntelCore i7-7820X	IntelCore i9-14900K
Overview
Released
Released	June 2017	October 2023
Cores and clocks
Cores
Cores	8	24 (8 performance, 16 efficiency) (better)
Threads
Threads	16	32 (better)
Base clock
Base clock	3.6 GHz	3.2 GHz
Boost clock
Boost clock	4.5 GHz	6 GHz (better)
L3 cache
L3 cache	11 MB	36 MB (better)
Cores
Cores	Skylake-X; 8 cores with Hyper-Threading. The unlocked multiplier is confirmed by Intel’s exact-model family product brief.	8 Performance-cores and 16 Efficient-cores, with Hyper-Threading; codename Raptor Lake
Clocks
Clocks	Turbo Boost Max 3.0 up to 4.50 GHz on the preferred core; ordinary Turbo Boost 2.0 up to 4.30 GHz. The main boost field uses Intel’s highest published frequency. Intel’s September press-kit record names 26 June 2017 availability for the first Core X processors; its August record confirms the four- to ten-core models were already on shelves. The exact model’s first-sale day was not established, so month precision is retained.	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	11 MB Intel Smart Cache (L3).	36 MB Intel Smart Cache (L3); 32 MB L2
Graphics and AI
Built-in graphics
Built-in graphics	No	Yes
Graphics
Graphics	No processor graphics, explicitly stated in Intel’s exact-model comparison-chart row; a separate graphics solution is required.	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	LGA2066	LGA1700
Base power
Base power	140 W	125 W
Maximum power
Maximum power	–	253 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	–
Memory support
Memory support	Up to 128 GB; four channels of DDR4-2666; 85 GB/s maximum published bandwidth; no ECC.	Up to DDR5 5600 MT/s or up to DDR4 3200 MT/s; 2 channels, up to 192 GB; ECC supported
PCIe
PCIe	28 CPU lanes; PCIe 3.0.	PCIe 5.0 and 4.0; 20 lanes (Up to 1x16+4, 2x8+4); DMI 4.0 x8
Chipsets
Chipsets	Intel X299; LGA2066.	Intel 600 and 700 series
Process
Process	14 nm; Skylake-X.	Intel 7
Cooler
Cooler	Intel explicitly excludes a fan and heatsink from the boxed product; a separate compatible cooler is required. Published junction limit: 99°C.	max operating temperature 100 °C; thermal specification PCG 2020A