Intel · Core

Core i7-7740X

Released June 2017

An unlocked four-core Kaby Lake-X desktop processor with Hyper-Threading and dual-channel DDR4 memory for LGA2066 enthusiast systems.

Cores: 4/8
Boost: 4.5 GHz
L3: 8 MB
Power: 112 W
Socket: LGA2066

Unlocked

What reviewers say

Both reviews criticised the costly X299 platform for offering little advantage over the 7700K. KitGuru praised gaming and overclocking performance but found weak threaded value and high temperatures. TechSpot recorded slower results in several tests and higher system power use; the different test systems do not support a single universal performance or power difference.

From kitguru.net, techspot.com, techspot.com, techspot.com and techspot.com

Specifications

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Cores and clocks

Cores: 4
Threads: 8
Base clock: 4.3 GHz
Boost clock: 4.5 GHz
L3 cache: 8 MB
Cores: Kaby Lake-X with Hyper-Threading; unlocked core multiplier confirmed by KitGuru’s exact-model technical table and overclocking test.
Clocks: Turbo Boost 2.0 up to 4.50 GHz; no Turbo Boost Max 3.0 in Intel’s exact comparison-chart row. Intel’s press-kit record names 26 June 2017 availability for the first Core X processors, and its August record confirms the four- to ten-core models were already on shelves; conservative month precision is retained.
Cache: 8 MB cache; L3 designation confirmed by KitGuru’s exact-model table.

Graphics and AI

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

Platform

Socket: LGA2066
Base power: 112 W
Unlocked: Yes
Cooler in the box: No
Memory support: Up to 64 GB; two channels of DDR4-2666; 42 GB/s maximum published bandwidth; no ECC.
PCIe: 16 CPU PCIe lanes; up to 1×16, 2×8 or 1×8 plus 2×4.
Chipsets: Intel X299; LGA2066.
Process: 14 nm; Kaby Lake-X.
Cooler: Intel excludes a fan and heatsink from the boxed product; junction limit 100°C.