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CPU

AMD Ryzen 9 3900X 3.8 GHz 12-Core Processor

(35 Ratings, 4.9 Average)

Prices

Merchant Base Promo Shipping Tax Availability Total
$783.00 In stock $783.00+ Buy
$784.00 In stock $784.00+ Buy
$789.00 $789.00+ Buy
$789.00 Out of stock $789.00+ Buy
$789.00 In stock $789.00+ Buy
$789.00 In stock $789.00+ Buy
$789.00 In stock $789.00+ Buy
$799.00 In stock $799.00+ Buy
$799.00 In stock $799.00+ Buy
$799.00 In stock $799.00+ Buy
$805.00 In stock $805.00+ Buy
$809.00 In stock $809.00+ Buy
$815.00 In stock $815.00+ Buy
$840.00 Preorder $840.00+ Buy
$849.00 In stock $849.00+ Buy
( 18 new from $849.00. Last updated 9 minutes ago. )
$869.00 In stock $869.00+ Buy
$906.40 In stock $906.40+ Buy

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Specifications

Manufacturer

AMD

Model

100-100000023BOX

Part #

  • Ryzen 9 3900X
  • 100-100000023BOX

Manufacturer

AMD

Core Count

12

Core Clock

3.8 GHz

Boost Clock

4.6 GHz

TDP

105 W

Series

AMD Ryzen 9

Microarchitecture

Zen 2

Core Family

Matisse

Socket

AM4

Integrated Graphics

None

Maximum Supported Memory

128 GB

ECC Support

No

Packaging

Boxed

Includes CPU Cooler

Yes

L1 Cache

  • 12 x 32 kB Instruction
  • 12 x 64 kB Data

L2 Cache

12 x 512 kB

L3 Cache

4 x 16 MB

Lithography

7 nm

Simultaneous Multithreading

Yes

Price History

    Reviews

    definitionxm7
    • 84 points
    • 4 months ago

    from completed build White Workbox - Ryzen 9 3900X ITX

    Great performance and price! The Ryzen 9 platform brought a wonderful experience to this build. 12-Cores was a welcoming addition to video editing and it is a rendering beast! Especially while multitasking from different applications for content creation.

    A solid processor.

    Snnackss
    • 64 points
    • 4 months ago

    from completed build ELEMENT 2.0 - 3900X Glory

    Insane performance for $500. There are some issues being an early adopter, but they aren't significant. Unless of course, you want to play Destiny 2...

    boanjangnararmine
    • 37 points
    • 3 months ago

    Way overkill for my purposes but has been a beast, tackling anything I've thrown at it with ease.

    sycorax666
    • 32 points
    • 3 months ago

    from completed build Old Mans Fast PC

    God Damn FAST. I've not even scratched its surface yet. Next week when I have all the VMs setup this will be put to EXCELLENT use. I cant wait to put this horse into the race. Idle's slightly higher than what I was expecting. But hey when it works no complaints. (Have not overclocked it yet, will do that in the next few weeks)

    JoeSpencer
    • 27 points
    • 1 month ago

    from completed build The Topless Ghost

    Well it's hot and it has a bunch of threads and I can get a stable all core overclock of 4.32 ghz+ but only if I give it like 1.43v which makes it run even hotter so I don't do that and it can do the blender bmw cpu render in a 1:50 but also it's just so hot like if you don't NEED 12 cores maybe get a 3700x instead?

    Cypher7
    • 24 points
    • 4 months ago

    from completed build Ryzen 9 3900X Video Editing PC

    Amazing processor. I'm using it for editing with Davinci Resolve and it has been a champ so far.

    E-Man1864
    • 21 points
    • 4 months ago

    from completed build Aurora

    Beast of a CPU. Handles everything I throw at it (gaming, video editing, streaming, virtual machines) with flying colors. Thanks to AMD for bringing 12c/24t CPUs to consumers.

    jk2
    • 21 points
    • 1 month ago

    from completed build My First Build

    A beast.

    hawkshawz
    • 19 points
    • 4 months ago

    from completed build RY23480V3

    Fantastic CPU for content creators, workstation users, and hardware enthusiasts. However, there are a few issues with this CPU:

    1. This has more to do with how Zen2 as a whole works, but you'll never get 4.6 to work on all cores without some seriously expensive cooling, at least a custom loop with a good pump, and that's assuming you have a golden chip when it comes to the silicon lottery.

    2. Precision Boost Overdrive is still broken, and drives up your voltage to almost dangerous levels, as even with an H115i RGB Platinum, my temperatures exceeded 90 C at stock, going anywhere from 90~95 C almost instantly and thermal throttling immediately when running P95.

    With AGESA 1.0.0.4 B, Per CCX OC has been added to the BIOS. I have CCX1 at 4.55, 2 at 4.45, 3 at 4.35, and 4 at 4.25, with a core voltage of 1.38 volts. Overall improvements to both performance and temperature, as there isn't a consistent issue with throttling and broken boost functions.

    arcana
    • 18 points
    • 3 months ago

    from completed build Velox

    This CPU slaps. Even with lazy air cooling it keeps low temps under load.

    I dislike the mounting mechanism on the stock cooler - give me screws! I don't care about how the mount is screwless; I'm already dealing with 8,000 screws and they fit better than whatever weird mechanism cpu manufacturers come with.

    Builds Using This Part

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