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AMD RYZEN 9 3900X 12-Core 3.8 GHz (4.6 GHz Max Boost) Socket AM4 105W 100-100000023BOX Desktop Processor

Ships from United States.

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Purchases from these Sellers are generally covered under our Newegg Marketplace Guarantee.
Marketplace Seller
  • 3rd Gen Ryzen
  • Socket AM4
  • Max Boost Frequency 4.6 GHz
  • DDR4 Support
  • L2 Cache 6MB
  • L3 Cache 64MB
  • Thermal Design Power 105W
  • With Wraith Prism cooler

  • Overview
  • Specs
  • Warranty & Returns
  • Reviews

Learn more about Ryzen 9 3900X

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by Newegg.com's Standard Return Policy.
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Easiest CPU Install to date. 7/5/2020 10:20:07 AM

Pros: Easy indication for lining up the CPU to it's socket on the motherboard.
Installed Windows like a breeze. Night and day difference from my i5 2500k to this. Good job AMD!

Cons: Packaging could have been better.

Overall Review: If you're looking for an easier on the wallet gaming build, this has you covered.

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Ownership: 1 week to 1 month
Verified Owner
4/ 5
New Addition For My Custom PC 7/5/2020 8:20:12 AM

Overall Review: It's an upgrade from what I use to have and it's running pretty good.

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Ownership: 1 month to 1 year
Verified Owner
5/ 5
Amazing preformance 7/5/2020 3:58:26 AM

Pros: -Exceptionally speedy video rendering
-Good game performance
-pretty good stock cooler (details in overall review)

Cons: -Can run hot (I never used the stock cooler though, read overall review for details on that)

Overall Review: Motherboard: X470 GPU: RTX 2080 RAM: 32GB G.SKILL Ripjaws V Series OC'ed to 3333Mhz
Storage: SAMSUNG 970 EVO M.2 2280 1TB PCIe Gen3

- I upgraded from a Ryzen 7 2700 (not the x unfortunately -_-) and noticed a significant increase in performance. I mainly use my PC for video editing and playing games and I love this CPU. I don't really play any super intense video games (FFXIV, No man's sky, Project Car 2 VR, CIV 5) but I did notice a nice improvement in performance, especially in Civilization 5.
- I was cooling my 2700 with a garbage Rosewill PB240 CPU Liquid Cooler 280mm radiator with two 120mm corsair fans instead of the stock ones, so I deiced to use that on the 3900x and use the stock cooler on the 2700. This may have been a mistake, because I have never been able to OC my 2700 so easily with the previously mentioned water cooler from Rosewill. I just put the 2700 at 3.9Ghz and even at a full load for an hour it never went above 56 C (of course I keep my house at 71 F and it doesn't have to share a case with a RTX 2080 anymore). Of course I could have just won the silicon lottery, that 2700 is an OC beast that I've gotten stable at 4.35Ghz before using a ventilation duct from an air conditioner strait into the case with idle to top temp being 12 C to 64 C.
What I'm getting at is don't be like me, and give the stock cooler a chance, because with that Rosewill I idle around 58 C and hit 80 C on a full all core load. Also the mounting plate is probably not on it very well (I should write a review for how bad that water cooler is).

1 out of 1 people found this review helpful. Did you?
Ownership: 1 month to 1 year
Verified Owner
4/ 5
Great CPU. NewEgg did great with RMA, CPU was DOA. 7/4/2020 5:43:52 PM

Pros: Great CPU, I am loving the performance.
The original CPU was DOA. NewEgg was very great during RMA. It took about 2-3 weeks, which I thought was a bit long. But other than that it was no hassle. Props to AMD for the numbers the CPU can put up, and props to NewEgg for the quality of the return process. I was very apprehensive about their RMA process after reading about people's complaints on review sites, ended up not being a relevant point at all. Awesome team.

Cons: CPU was DOA. [NewEgg replaced no hassle]

Overall Review: You should buy this product.
You should not by concerned by the bad NewEgg reviews you read online. RMA process was great.

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great upgrade for mid-level gaming rig. 7/4/2020 1:51:08 PM

Pros: Easy install.
Runs everything they've thrown at it so far.

Cons: None.

Overall Review: I've built three gaming rigs with this processor for my son and a couple of his buddies. No issues, great improvement over their older FX systems. No complaints.

I run an 8700K in my personal PC so I'm certainly not an AMD fanboi. I'll go with whatever works for the performance and price point of the time so both AMD and Intel have their place on my list.

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Best AMD processor for the price 7/4/2020 1:27:25 PM

Overall Review: Works fantastic

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Ownership: 1 week to 1 month
Verified Owner
5/ 5
Ryzen 5 3600 7/4/2020 12:28:58 PM

Pros: Works great! Overclocks like a champ!

Cons: Overckocking with stock cooler can get a bit toasty. But not too bad.

Overall Review: Best cpu in it's price range! Just watch out for fakes!

Did you find this review helpful?
Ownership: 1 week to 1 month
Verified Owner
5/ 5
Great ram 7/4/2020 11:33:43 AM

Pros: Easy set up and over clocks well.nice rgb

Cons: None

Overall Review: Awesome ram

0 out of 1 people found this review helpful. Did you?
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  • New : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty.
  • Refurbished : This means the product was tested and repaired as required to meet the standards of the refurbisher, which may or may not be the original manufacturer. Any exceptions to the condition of the item outside the manufacturer’s information should be provided in the listing, up to and including warranty details.
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  • Used - Like New : This means that the product has been opened, possibly used but is in perfect condition with no signs of cosmetic or functional defect. Product may includes warranty, and accessories found with the original product. Product may or may not be in the original packaging. Returned items with minor packaging defects fall under this category.
  • Used - Very Good : This means that the product has been opened, may show slight signs of use and cosmetic blemish, and may be missing minor accessories, but remain in excellent condition. Product does not come with warranty unless stated otherwise in product description.
  • Used - Good : This means that the product has been used, may show clear signs of use and may be missing minor accessories, but remain in good condition. Product does not come with warranty unless stated otherwise in product description.
  • Used - Acceptable : This means that the product shows clear signs of use, cosmetic defect, and may be missing minor accessories and manual, but remain in working condition. Product does not come with warranty unless stated otherwise in product description. Functionality issues beyond signs of use should be disclosed in product description.
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