AMD Ryzen Threadripper 3990X

The Ryzen Threadripper 3990X is an incredible product from AMD that is not only exciting for professionals today, but it paves the way for more affordable core-heavy desktop parts in the near future.
- As reviewed by TechSpot on Feb 2020
64
Cores
128
Threads
2.9 GHz
Base Clock
4.3 GHz
Boost Clock
Socket TRX4
Socket
280 W
TDP
No iGPU
Graphics
$2,499
Price
Release date:Feb 7, 2020Price at Launch:$3,990
Cores:64Threads:128
Base Clock:2.9 GHzBoost Clock:4.3 GHz
Type:DesktopMultithreading:Yes
L2 Cache:32 MBL3 Cache:256 MB
Box Cooler:NoTDP:280 W
Socket:Socket TRX4Memory Support:DDR4-3200
Codename:Castle Peak (Zen 2)Process Size:7 nm
Integrated Graphics:NoNPU:No
PCIe Support:PCIe 4.0, 64 Lanes

Price History

AMD Ryzen Threadripper 3990X pricing

Price Date
Current $2,499 Dec 15, 2025
Highest* $3,990 Jun 29, 2025
Lowest* $2,499 Sep 11, 2025
Average $2,909
* Prices are based on listings from Newegg and other major retailers over the past 12+ months.
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Reviews and Ratings

95

Average Score

Based on 11 reviews

8.6

User Score

Based on 68 reviews

Reviewers Liked

  • Monstrous MultiThreaded performance
  • SingleThread improvements over 2nd gen
  • Excellent rendering performance
  • PCI Express 4.0 support

Reviewers Didn't Like

  • Ultra premium pricing
  • Requires new motherboards
  • Benefits a narrow cross-section of workloads

After reviewing the Threadripper 3990X, it was made clear the 64-core/128-thread beast from AMD lays waste to every HEDT part we have ever tested. It's an insane productivity CPU, that we pushed to extremes to torture a few motherboards just this week....

By TechSpot on
90

Today we're looking at the most expensive desktop CPU to ever exist, and shockingly it's not from Intel. The special ocassion made us think of an Intel processor that we were quite fond of once, the Broadwell-E Core i7-6950X, which happened to be the...

By TechSpot on
100

Sure, you need a very specific set of circumstances to need 64 cores. Sure, a healthy bank balance is also a necessity, but if you want what the Threadripper 3990X has to offer there is nothing, nothing, around that can touch it for hilariously fast rendering speeds. Someone hand Intel a candle, they are so far in the dark with anything Threadripper has to offer it's actually starting to get a bit embarrassing.

By OC3D on
95

One needs to move away from the desktop and think of the server space when fully evaluating this unique chip. For businesses whose compute requirement was previously expressed by dual Xeons, with little need for a terabyte of memory, AMD, even at $3,990, offers a real alternative at a fraction of the price. If you can find a genuine use for its intrinsic power, this is a remarkable processor.

By HEXUS.net on
100

The AMD Ryzen Threadripper 3990X isn’t perfect and it’s meant to appease a specific sub-set of users, obviously. Even still, we must commend AMD for continually and aggressively pushing the envelope since the introduction of its first-gen Ryzen architecture. AMD’s efforts that last few years have re-shaped the enthusiast computing landscape and injected some real excitement. If AMD continues on this trajectory with Zen 3 and beyond, we can’t wait to see what the company has in store for us all next year.

By HotHardware on
90

AMD is continuing to assert its performance dominance in the HEDT/workstation market by offering a processor that is affordable enough to allow reasonable people working on reasonable projects for reasonable companies with reasonable IT budgets to reach an echelon of performance that simply was not available prior to the Ryzen Threadripper 3990X. That deserves an immense amount of credit. The importance of this statement that AMD has made to the market should not be underestimated.

By Kitguru.net on
100

In the end, Threadripper's biggest processors serve the smallest portion of the market but do have the biggest effect in that same market. For us common folk, Threadripper processors may not even make any sense, I mean you can get one for bragging rights and fun if you wanted to, nobody would hold it against you.

By Guru of 3D on
93

For those who can use the AMD Ryzen Threadripper 3990X and its 64 cores/ 128 threads, along with PCIe Gen4 I/O, a completely new tier of per-socket performance is attainable. Having those options is important to drive the market forward, pushing boundaries, and advancing what can be created on the desktop.

By servethehome.com on
90

The 64-core 128-thread Threadripper 3990X is a highly-specialized processor that provides incredible performance in a narrow cross-section of workloads, but at a very attractive price point given its capabilities.

By Tom'sHardware on
95

The Ryzen Threadripper 3990X is a best in class CPU from AMD, and is the most powerful CPU we have ever seen for content production and rendering. It's a perfect high performance workstation CPU, and it can easily overclock if you have the proper infrastructure to support it.

By TweakTown on
90

Overall, despite the fact that it doesn’t scale well all over, the Ryzen Threadripper 3990X is a phenomenal processor. The fact that it doesn’t scale well in every case appears to us to be more the fault of software not being designed for it, rather than be a fault of the product itself. At the second-gen Threadripper launch, the situation was bad enough, as 32-core CPUs finally hit the desktop. Now we’re seeing a doubling of cores once again – that’s going to take some time to properly support.

By TechGage on

Today marks three years since AMD introduced the Ryzen Threadripper 3990X, the first HEDT chip sporting 64 cores / 128 threads. While based on Zen 2, the shear multi-threaded compute power of the Threadripper 3990X still bodes well today. Besides 64...

By Phoronix on

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