Intel BX80677I77740X Core i7-7740X Processor

Name: Intel BX80677I77740X Core i7-7740X Processor
Brand: Unbranded
SKU: B072KTRQ9G

Bottom line: The Intel BX80677I77740X Core i7-7740X Processor: Unlocked quad-core with 8 threads tuned for overclocking headroom; main trade-off: only 16 PCIe lanes, low for an X299 board's expansion slots.

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By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-09-28

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

Pros & Cons

Pros

✓ Unlocked quad-core with 8 threads tuned for overclocking headroom
✓ Higher base clock than the mainstream counterpart per Intel's description
✓ Drops into X299 boards, so you can step up the X-series stack later
✓ Intel Optane memory ready, including support for Optane SSDs

Cons

✗ Only 16 PCIe lanes, low for an X299 board's expansion slots
✗ 4 cores/8 threads trails higher-core X-series parts on multithreaded work
✗ LGA 2066 means an X299 motherboard, a costlier platform than mainstream
✗ Quad-core ceiling limits streaming and heavy content-creation workloads

Manufacturer description

Product DescriptionThe new family of Intel Core X-series processors introduces this quad core processor for broader expandability of the platform. The Intel Core i7-7740X allows you to invest in a more powerful enthusiast platform that provides more headroom and scalability up the X-Series stack when you are ready. This processor starts with a slightly higher base frequency and all of the ingredients, like higher memory speed and larger socket, for better overclocking performance compared to its mainstream counterparts. This processor is compatible with the Intel X299 Chipset. For even more…

SpecPicks Verdict

SpecPicks scored Intel BX80677I77740X Core i7-7740X Processor using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the processors category. Compare with similarly-priced alternatives in the processors category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for processors of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

Socket LGA 2066
Compatibale with Intel X299 Chipset
4 Cores/8 Threads
Max Number of PCI Express Lanes 16
Intel OptaneTM memory ready and support for Intel OptaneTM SSDs

Full Specifications

Brand	Intel
Wattage	112
Platform	No Operating System
CPU Model	Core i7
CPU Speed	4.5 GHz
CPU Socket	LGA 2066
Unit Count	1 Count
Model Number	i7-7740X
Built-In Media	CPU
Mfr Part Number	BX80677I77740X
Number of Items	1
Processor Brand	Intel
Processor Count	4
Processor Speed	4.5 GHz
Secondary Cache	8 MB
CPU Manufacturer	Intel
Processor Series	Core i7
Processor Socket	LGA 2066
Processor Core Count	4
Warranty Description	Limited warranty; 3 years warranty

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Intel BX80677I77740X Core i7-7740X Processor is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Intel