AMD's 64-core Threadripper 3990x is now available
You can rip the threads off your PC with this CPU, but it comes at a cost.
What you need to know
- The AMD Threadripper 3990x is now available.
- The CPU has 64 cores and 128 threads to deliver high performance.
- The Threadripper 3990x is avaialble now from NewEgg for $3990
The AMD Threadripper 3990x is now available through NewEgg. AMD's latest Threadripper CPU brings 64 cores and 128 threads to help you render the most demanding workloads and games. AMD announced the CPU at CES 2020, including its impressive spec sheet. The Threadripper 3990x costs $3,990.
The Threadripper 3990x has 64 cores, 128 threads, and a combined cache of 288MB. It has 88 total PCIe 4.0 lanes to accommodate large GPU and NVMe requirements. It also has quad-channel DDR4 with ECC support.
| Category | AMD Ryzen Threadripper 3990x |
|---|---|
| CPU cores | 64 |
| Threads | 128 |
| Base clock | 2.9GHz |
| Max boost clock | 4.3GHz |
| Total L1 cache | 4MB |
| Total L2 Cache | 32MB |
| Total L3 Cache | 256MB |
| Unlocked | Yes |
| CMOS | TSMC 7nm FinFET |
| Package | sTRX4 |
| PCI Express Version | PCIe 4.0 |
| Default TDP/TDP | 280W |
| Max temperature | 95°C |
| OS support | Windows 10 - 64-Bit Edition RHEL x86 64-Bit |
It has NVMe RAID support, meaning you can combine up to six NVMe disks with Threadripper processors. You can double that bandwidth with PCIe 4.0 on AMD's TRX40 motherboards.
AMD positioned the Threadripper 3990x as a value proposition when compared to more expensive Intel hardware. AMD stated at CES that the Threadripper 3990x is around 30 percent faster than a dual Intel Xeon 8280 configuration, which costs around $20,000. The Threadripper 3990x is geared towards high-end professionals, so a price tag measured in thousands is normal.
All the latest news, reviews, and guides for Windows and Xbox diehards.

Sean Endicott is a news writer and apps editor for Windows Central with 11+ years of experience. A Nottingham Trent journalism graduate, Sean has covered the industry’s arc from the Lumia era to the launch of Windows 11 and generative AI. Having started at Thrifter, he uses his expertise in price tracking to help readers find genuine hardware value.
Beyond tech news, Sean is a UK sports media pioneer. In 2017, he became one of the first to stream via smartphone and is an expert in AP Capture systems. A tech-forward coach, he was named 2024 BAFA Youth Coach of the Year. He is focused on using technology—from AI to Clipchamp—to gain a practical edge.
