AMD Ryzen Threadripper 3990X 64-Core, 128-Thread Unlocked Desktop Processor

Name: AMD Ryzen Threadripper 3990X 64-Core, 128-Thread Unlocked Desktop Processor
Brand: Unbranded
SKU: B0815SBQ9W
Price: 3969.99 USD
Availability: InStock

By Mike Perry, Hardware Editor · Verified 2026-09-06

Mike Perry has researched PC hardware since 2014, tracking 80+ GPU generations, 50+ retro handheld platforms, and 30+ vintage PC configurations. He synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. View full credentials →

$3969.99

As an Amazon Associate, SpecPicks earns from qualifying purchases.

View Current Price on Amazon → Compare to similar processors

*Price sourced from Amazon.com. Last updated 2026-08-26. Price and availability subject to change.

Bottom line: The AMD Ryzen Threadripper 3990X 64-Core, 128-Thread Unlocked Desktop Processor is a niche pick — read recent reviews before buying in the processors category, priced around $3969.99. Compare close alternatives before committing.

SpecPicks Verdict

SpecPicks scored AMD Ryzen Threadripper 3990X 64-Core, 128-Thread Unlocked Desktop… 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. Mixed or limited buyer feedback at this price point — focus your evaluation on recent reviews that specifically address build quality and long-term reliability, and shortlist one or two close alternatives before deciding.

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 Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.

Pros & Cons

Pros

✓ Incredible 4. 3 GHz max boost frequency, with a huge 288MB cache
✓ Ships via Amazon with Prime eligibility and the standard returns policy

Cons

✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified

Key Features

A world-beating 64 cores and 128 processing threads for visual effects and video editing professionals.
Incredible 4. 3 GHz max boost frequency, with a huge 288MB cache
Unlocked, with new automatic overclocking feature
Quad-Channel DDR4 and 88 total PCIe 4. 0 lanes, the most bandwidth and I/O you can get on desktop processor
280W TDP
Cooler not included

Full Specifications

Brand	AMD
CPU Model	Ryzen Threadripper 3990X
CPU Speed	4.3 GHz
CPU Socket	Socket TRX4
CPU Manufacturer	AMD

Ready to buy?

AMD Ryzen Threadripper 3990X 64-Core, 128-Thread Unlocked Desktop Processor is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price on Amazon →

*Price sourced from Amazon.com. Last updated 2026-08-26. Price and availability subject to change.