Intel · Core

Core i5-7640X

Released June 2017

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

Cores: 4/4
Boost: 4.2 GHz
L3: 6 MB
Power: 112 W
Socket: LGA2066

Unlocked

What reviewers say

Both reviews questioned the value of placing a four-thread processor on the expensive X299 platform. TechSpot preferred mainstream alternatives, while Tom’s Hardware France found weak heavily threaded workstation results but useful overclocking headroom. Tom’s did not test the 7640X in games in this article, so its gaming conclusions apply to the 7740X only.

From tomshardware.fr, techspot.com, techspot.com, techspot.com and techspot.com

Specifications

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Cores and clocks

Cores: 4
Threads: 4
Base clock: 4 GHz
Boost clock: 4.2 GHz
L3 cache: 6 MB
Cores: Four cores and four threads; unlocked multiplier confirmed by Tom’s Hardware France’s exact-model table and overclocking test.
Clocks: Turbo Boost 2.0 up to 4.20 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: 6 MB cache; L3 designation confirmed by Tom’s Hardware France’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 3.0 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.