Intel Core i7-9800X vs Intel Core i9-9820X

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Core i7-9800X compared with Core i9-9820X

	IntelCore i7-9800X	IntelCore i9-9820X
Overview
Released
Released	November 2018	2018
Cores and clocks
Cores
Cores	8	10 (better)
Threads
Threads	16	20 (better)
Base clock
Base clock	3.8 GHz	3.3 GHz
Boost clock
Boost clock	4.5 GHz (better)	4.2 GHz
L3 cache
L3 cache	16.5 MB	16.5 MB
Cores
Cores	Skylake-X refresh; Hyper-Threading and an unlocked multiplier, confirmed by Intel’s exact-model launch table.	Skylake-X refresh; Hyper-Threading and an unlocked multiplier, confirmed by Intel’s exact-model launch table.
Clocks
Clocks	Turbo Boost Max 3.0 up to 4.50 GHz on the preferred cores; ordinary Turbo Boost 2.0 up to 4.40 GHz. Intel’s October announcement states November availability; Kakaku lists November 2018 release for this exact model. The maker-confirmed exact first-sale day remains unverified.	Turbo Boost Max 3.0 up to 4.20 GHz on the preferred cores; ordinary Turbo Boost 2.0 up to 4.10 GHz. Intel’s October 2018 announcement planned November availability. Ark’s contemporary exact-model report confirms Japanese retail sale on 14 December 2018, but earlier worldwide sale was not established; year precision is retained.
Cache
Cache	16.5 MB Intel Smart Cache; L3 designation confirmed by the exact Newegg listing.	16.5 MB Intel Smart Cache; L3 designation confirmed by the exact Newegg listing.
Graphics and AI
Built-in graphics
Built-in graphics	No	No
Graphics
Graphics	No processor graphics, explicitly confirmed by Intel’s exact-model support table.	No processor graphics, explicitly confirmed by Intel’s exact-model support table.
Platform
Socket
Socket	LGA2066	LGA2066
Base power
Base power	165 W	165 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	No
Memory support
Memory support	Up to 128 GB; four channels of DDR4-2666; 85 GB/s maximum published bandwidth; no ECC.	Up to 128 GB; four channels of DDR4-2666; 85 GB/s maximum published bandwidth; no ECC.
PCIe
PCIe	44 CPU lanes; PCIe 3.0. The 68-lane family platform figure includes chipset lanes.	44 CPU lanes; PCIe 3.0. The 68-lane family platform figure includes chipset lanes.
Chipsets
Chipsets	Intel X299; LGA2066.	Intel X299; LGA2066.
Process
Process	14 nm; Skylake-X refresh.	14 nm; Skylake-X refresh.
Cooler
Cooler	Intel explicitly excludes a fan and heatsink from the boxed product. Intel’s support article confirms solder thermal interface material for this exact model; published junction limit 95°C.	Intel explicitly excludes a fan and heatsink from the boxed product. Intel’s support article confirms solder thermal interface material for this exact model; published junction limit 92°C.