A motherboard maker has added support for AMD’s yet-to-be-announced Ryzen 9 3900 CPU. The product will be one of the industry’s first 12-core CPU featuring a mainstream TDP of 65 W. In addition, the same manufacturer revealed that there is a Pro version of the said CPU incoming.

Biostar’s X470NH motherboard recently gained support for AMD’s yet-to-be-announced Ryzen 9 3900 CPU with a 65 W TDP, which may indicate that the launch of the unit is imminent. This is not the first time an unannounced CPU has been listed in a CPU validation list. As a second source, the processor was listed in Eurasian Economic Union’s index of crypto-capable devices as a ‘twelve-core microprocessor’.

AMD Ryzen 3000 9 Series CPUs
AnandTech Cores
TDP Launch Date Price
Ryzen 9 3950X 16C 32T 3.5 4.7 8 MB 64 MB 16+4+4 105W Nov. 2019 $749
Ryzen 9 3900X 12C 24T 3.8 4.6 6 MB 64 MB 16+4+4 105W July 2019 $499
Ryzen 9 3900 12C 24T 3.1 4.2? 6 MB 64 MB 16+4+4 65W ? ?

Based on the information provided by the sources, AMD’s Ryzen 9 3900 is a 12-core CPU with SMT that operates at 3.1 GHz default frequency (and presumably featuring a 4.2 GHz maximum turbo frequency from a 3DMark listing) and a 65 W TDP. The relatively low thermal envelope makes the Ryzen 9 3900 compatible with mainstream motherboards and cooling systems and enables PC makers to build relatively small computers featuring a 12-core processor. Meanwhile, the Ryzen 9 Pro 3900 adds various security technologies, enterprise management, and reliability enhancements for business and corporate computers.

It is unclear when exactly AMD plans to introduce its 12-core Ryzen 9 3900 and Ryzen 9 Pro 3900 processors and how much will they cost, yet it is reasonable to think that both products will be available in the near future.

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Sources: Biostar (via momomo_us/Twitter), EAUnion.org (via Planet3DNow)

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  • rocky12345 - Thursday, September 26, 2019 - link

    Great to see more choices on the CPU front but it is just my opinion that if these are actually gonna be released they are probably 3900x CPU's that did not make the cut and instead of throwing them out AMD is making use of them at a lower performance point. It could also be a CPU made for OEM's that want to build prebuilts and because it is at a lower wattage they will get away with using slightly lower spec coolers. Just an opinion nothing more.
  • supdawgwtfd - Thursday, September 26, 2019 - link

    So the same as every single other CPU ever made in all time that isn't the top spec CPU then?

    Your comment is pretty worthless lol.
  • Korguz - Friday, September 27, 2019 - link

    rocky12345, its something called die harvesting, which amd and intel have been doing for years now.
  • Threska - Thursday, September 26, 2019 - link

    "Meanwhile, the Ryzen 9 Pro 3900 adds various security technologies, enterprise management, and reliability enhancements for business and corporate computers."

    Platform Security Processor. I can already hear the fear-mongers rattling their cage.
  • imaheadcase - Thursday, September 26, 2019 - link

    huh? Its business security stuff. Not sure details but normally means a hardware option vs software needing to use something.
  • close - Thursday, September 26, 2019 - link

    It's the PSP, AMD's equivalent of the ubiquitous Intel ME. A controller that can run stuff in ring 03 (higher privileges than the SMM/CPU itself so to speak). This has a black box firmware so it's opaque enough that it's hard not to think that it can be very easily exploited for nefarious reasons.

    Of course, besides fear mongers there are people like Threska who despite several very eye opening hacking and spying revelations still decide to pretend like all is good in the world and nobody would try to pull a fast one on them.

    @Threska, since you obviously live by marketing statements I have a bridge to sell to you.
  • bananaforscale - Thursday, September 26, 2019 - link

    PSP has been a thing for a few years now.
  • MattZN - Thursday, September 26, 2019 - link

    Just take your 3900X, go into the BIOS. AMD CBS -> NBIO -> SMU, and set the cpu socket power to whatever you like (within your mobo and cooling capabilities). Its supposed to be watts but it doesn't seem to be very accurate, so try '80' first and see how it goes. Its fun to play with.

    Presumably the '3900' will simply allow AMD to use lower-binned dies that don't turbo as well.

  • Dug - Thursday, September 26, 2019 - link

    I'd be curious if you can get same with 3900x as this 3900. If true, then 3900x seems like a better buy as you can adjust when you want. I wouldn't expect the 3900 price to be that much different than 3900x
  • MattZN - Thursday, September 26, 2019 - link

    Ok, I have a few minutes and a 3900X that's idle. Lets find out.... socket power set to '65' under CBS -> NBIO -> SMU. This is not running windows so my workload is basically a bulk compile... ahhh, lets see. I'll compile chromium. This is obviously a non-AVX workload so YMMV.

    On this workload under full load I get 3.0-3.2 GHz all-cores. Most of the time its sitting at 3.1GHz or so. Power consumption at the wall is 118W. Machine configuration is: 64GB of ECC ram @ 2400, a little radeon 6450 for the screen (just in VGA mode), tower cooler (43C), and three SSDs.

    Normally I run this machine with SMU set to 105W, which is around 165W at the wall. Its in a rack so everything is on a power budget. p.s. 3900X's are real monsters when it comes to doing bulk compiles and things like that. Just unbelievable horsepower and power efficiency for the price. It's only limited by having 4 unbuffered memory slots (64GB w/16G DIMMs or 128GB w/32G DIMMs).


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