Intel · Core

Core i7-9800X

Released November 2018

An unlocked 8-core Skylake-X refresh desktop processor with Hyper-Threading and four-channel DDR4 memory for LGA2066 enthusiast systems.

Model history · 6 models, 2012–2018

Cores: 8/16
Boost: 4.5 GHz
L3: 16.5 MB
Power: 165 W
Socket: LGA2066

Unlocked

What reviewers say

ProClockers praises stock performance and memory bandwidth but found its sample’s heat and voltage requirements limited overclocking. Puget’s Premiere Pro 2019 tests found only a small gain over the 7820X and favoured the cheaper 9900K unless more memory was needed. These findings point to platform bandwidth rather than a large performance upgrade.

From gaminggorilla.com and pugetsystems.com

Specifications

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Cores and clocks

Cores: 8
Threads: 16
Base clock: 3.8 GHz
Boost clock: 4.5 GHz
L3 cache: 16.5 MB
Cores: Skylake-X refresh; Hyper-Threading and an unlocked multiplier, confirmed by Intel’s exact-model launch table.
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.
Cache: 16.5 MB Intel Smart Cache; L3 designation confirmed by the exact Newegg listing.

Graphics and AI

Built-in graphics: No
Graphics: No processor graphics, explicitly confirmed by Intel’s exact-model support table.

Platform

Socket: LGA2066
Base power: 165 W
Unlocked: Yes
Cooler in the box: No
Memory support: Up to 128 GB; four channels of DDR4-2666; 85 GB/s maximum published bandwidth; no ECC.
PCIe: 44 CPU lanes; PCIe 3.0. The 68-lane family platform figure includes chipset lanes.
Chipsets: Intel X299; LGA2066.
Process: 14 nm; Skylake-X refresh.
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.

Pros and cons

Pros

8 cores and 16 threads
Four-channel memory controller
44 CPU PCIe lanes

Cons

No integrated graphics
No boxed cooler
Requires an LGA2066 motherboard

Closest rivals

Model	Cores	Boost	L3	Power	Socket	Released
AMDRyzen Threadripper 1900X	8/16	4 GHz	16 MB	180 W	sTR4	Aug 2017
AMDRyzen 7 2700X	8/16	4.3 GHz	16 MB	105 W	AM4	Apr 2018
IntelCore i9-9820X	10/20	4.2 GHz	16.5 MB	165 W	LGA2066	2018

Previous model: Core i7-7820X.

Sources

Photo: Newegg exact BX80673I79800X listing’s retail-box photograph; i7-9800X and LGA2066 label visible, original white background retained.

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