AMD Ryzen 9 3900X 12-core, 24-thread Unlocked Desktop processor with Wraith Prism LED Cooler
Condition: Used - Like New
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Availability:
Only 2 left in stock, order soon!
Arrives
Nov 1 – Nov 16
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Style: Processor
Features
- The world's most advanced processor in the desktop PC gaming segment
- Can deliver Ultra-fast 100 plus FPS performance in the world's most popular games
- 12 Cores and 24 processing threads, bundled with the AMD Wraith Prism cooler with color controlled LED support
- 4.6 GHz max Boost, unlocked for overclocking, 70 MB of game Cache, DDR 3200 support. OS Support-Windows 10 - 64-Bit Edition, RHEL x86 64-Bit, Ubuntu x86 64-Bit. Operating System (OS) support will vary by manufacturer
Description
AMD Ryzen 9 3900X 12 core, 24 thread unlocked desktop processor with Wraith Prism LED cooler.
Brand: AMD
CPU Manufacturer: AMD
CPU Model: Ryzen 9 3900X
CPU Speed: 4.6 GHz
CPU Socket: Socket AM4
Processor Series: Ryzen 9 3900X
Processor Speed: 4.6 GHz
Processor Socket: Socket AM4
Secondary Cache: 64 MB
Wattage: 105 watts
Cache Memory Installed Size: 64 MB
Processor Count: 1
Processor Number of Concurrent Threads: 24
Processor Core Count: 12
Cooling Method: Air
Platform: Not Machine Specific
Item Dimensions L x W: 1.57"L x 1.57"W
Software Update Supported to Date: unknown
Brand: AMD
Processor Brand: AMD
Model Number: Ryzen 9 3900X
Number of Items: 1
UPC: 730143309950
Manufacturer: AMD
Global Trade Identification Number: 50
Item Weight: 1.6 ounces
Item Type Name: Desktop Processor
Mfr Part Number: Ryzen 9 3900X
Warranty Description: 1 Year Limited, 3 year manufacturer
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Nov 1 – Nov 16
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: Processor
Motherboard: ASRock x370 Taichi Corsair Vengence 3200 RAM 32GB 500gb WD Black M.2 NVME boot drive 2 TB WD Black 7200 HHD storage drive 850w 80+Gold Cooler Master PS AMD r9 3900x Stock Speed (No OC) Cooler Master ML240L AIO Liquid Cooler Cooler Master H500P Mesh case Found that the 3900x was not in stock on launch date, 7/7/19. Set Amazon to notify me when available. Got the message hit the 1-click-puchase button faster than I ever have. The item was purchased 7/8/19 and shipped Tuesday 7/10. I received the CPU safe and well packaged on Friday 7/12, a day earlier than Amazon quoted at time of shipment. After updating the BIOS, and running a few final benchmarks on my Asrock x370 Taichi motherboard, I shut down the system and removed my 1800x (this CPU will go into my daily driver system and relieve my r5 1600 CPU slated to be installed in Mom's PC). Warning! Make sure to move the AIO fan wire out of the way of the CPU die and the cooler surface. I had a boot loop and overheating/shutdown session. Was able to get into the BIOS and see the CPU temp at 101c Wow! LOL no wonder it was shutting off. Anyway after seeing my stupid mistake, and re-seating the AIO cooler, the next boot-up took forever and 10 minutes to boot into Windows. Once Windows recognized the CPU and it was running, I started running some benchmarks. Now, I'm not a gamer, so again I am comparing my work load of video editing and production as well as rendering. With one commercial project alone, I my render time has dropped from around 20 minutes to 12 minutes... that's 40% improvement. I can render some commercial projects up to 4 times per work session. I've been very happy with the performance so far, but I'm absolutely blown away by this processor's ability. Rendering a 1 hour 1080p video usually takes an 1h 10m or so. I re-rendered last week's video and that time dropped down to around 42 minutes. My productivity is going to go through the roof. Spending $500 on one single item that is smaller than the palm of your hand can be mind-blowing for some people. It may also cause some heartache and possibly buyers remorse for others. Here's the deal, when you consider purchasing this CPU, you must do some research. Know exactly what you will be doing with your system to insure the performance gain is there. If you are a gamer, this CPU will play every game very very well. While it never claims to be the best in gaming, it is definitely meant for heavy work loads. What an outstanding and simple upgrade for a system that will provide another 4 years of great productivity. As a side note, I have been eyeing up an AMD Threadripper build for the past 9 months. My work requires high core and thread counts which enable the jobs to render much faster. I had already saved my money to invest into the 2950x and was still saving for the motherboard. Considering the fact that I earn a living with my PC, a professional workstation is in order. While it's exciting to order a new "toy", I hope you plan for something like this. It makes your purchase even sweeter when you "just know" you got a great product for a reasonable price, and it will do what you need it to do. Also, looks like I need to update the name of my system now LOL. It's not an 1800x any longer. Cheers!
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Reviewed in the United States on July 14, 2019 by relxerd
Style: Processor
Why I ordered this item: My old CPU was chugging on some video editing work and I wanted more cores to throw at it. 12 cores felt like overkill until I needed it. Likes: * Rendering times dropped a ton. A project that used to take almost an hour now finishes while I go make lunch. * The included Wraith Prism cooler is snazzy looking. I run the RGB on a slow color cycle and it looks great through my side panel. * Multitasking is zippy now. I can have a game running, OBS recording, and a browser with 30 tabs open and nothing chugs. * I've pushed all 12 cores at once and the fan just spins up a bit louder, no coil whine, no thermal warnings popping up. No likes: * You need a recent motherboard BIOS to run this chip. Mine needed an update before it would even boot, and I had to borrow an older CPU just to flash it. Would I pay full price for this product: Yes Final thoughts: Rendering finishes fast enough that I can walk away and grab lunch, and I can run a game, OBS, and a pile of browser tabs at once without anything chugging. If you're editing, streaming, or juggling a bunch of programs at once, the extra cores earn their keep. Just budget for a BIOS update and don't be shocked by the temps.
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Reviewed in the United States on September 12, 2026 by Amazon Customer
Style: Processor
So I have stuck with AMD since they released their Ryzen series CPUs. Back in the day (pre 2000 and into early 2000s) I used the Athlon processors exclusively. Eventually switched to Intel processors, and since about 2016 have stuck with AMD Ryzen exclusively. Every time I upgrade I am happy I decided to stick with them. I overclocked this Ryzen 9 3900x which I overclocked to 4.2ghz (able to go to 4.5 but haven't tested that out yet). Just as with my last Ryzen 7 2700 that was overclocked for the 1.5 years I used it it has been incredibly stable. I do not use the wraith cooler, I have a dual chamber water cooler as these CPUs run a bit hotter than the Ryzen 7 (8 core) CPUs - of course I used a water cooler with that as well due to overclocking. You could get away with the cooler and overclocking possibly but it is best just to use the water cooler just in case. The processing power is incredibly. I have it coupled with a 2080ti and 32 gigs of 3200mhz ram. I do video editing, graphics, and sound editing for work. Heavy CPU and graphics card usage in those processes and this computer runs perfectly. I would stack this against any intel chip in the same range... this one beats it in speed and price. In Ryzen Master software currently it is fluctuating between 36 degrees C, and 38.6 degrees. With my Ryzen 7 2700 which was overclocked to 4 ghz and with my other water cooler (single chamber) it was usually between 24-30 C. so we added 4 more cores, and more power per core. I have not noticed a significant increase while running games/software but the limit is 95 degrees C so it is not really something you need to worry about. I highly recommend this CPU. This is expensive when looking at CPUs like the Ryzen 7 2700x and similar, but 430 dollars or whatever it was is well worth it. My old PC (which has been rebuilt and still has a GTX 1070) is still a modern PC that is capable of a lot and this current one will be for several years really. Short of upgrading the video card to the 3090 within the next year (maybe) I do not foresee any real need to upgrade the CPU for at least 3-4 years. As far as money goes - sometimes we need to be reminded of perspective. My fiance was getting a laptop the other day and wanted to spend 500-650 max. She is a traveling medical worker. So a laptop will be very important to her and used a lot as she goes from city to city. So I explained that we drop upwards of 1000 dollars or more on our phones every 1 to 2 years without much thought at all. yet when we are buying electronics that will need to have a lot of power and hold up and be used as much or more we get very cheap. I spent 2000 dollars on a laptop back in 2012 and have upgraded it here and there (ram and hard drive) and it still runs extremely well. I use it for a lot of things. Had I spent 500 dollars it would have been useless by now. So if you have the means, do not cheap out and buy a 300 dollar option for your CPU - you will end up spending that much or more very soon. Always buy beyond what you need when building a PC if it is doable for you. I have had systems that ran flawlessly for many years, and ones that played the latest games at high settings with decent FPS, and ran adobe software wonderfully. I will update this review when I test an OC of 4.5 ghz and give you the details on cinebench for both the 4.2 and 4.5 OC.
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Reviewed in the United States on November 10, 2020 by JJ Oliver
Style: Processor
upgraded from my Ryzen 7 to this Ryzen 9 3900X for gaming cache. First off its insanely snappy. Will run a bit hot even with liquid cooling. If you buy this get liquid cooling. So right out of the gate my RTX 2700 Super Founders Edition had insane eye candy and much better speed. Anything you through at it will open at break neck speeds. Your mouse will be your enemy. It will move entirely way too fast due to its processing power. This thing mops the floor with all the Intel Chips ive ever owned. Even my I9 chips dont game or compute as this chip does. Its a must have if you want to play video games and do insane amounts of processing. It operates on all buses on your system board quite efficiently. Ive been debating messing with my memory timing as I have AMD Ryzen Memory Ready RAM which automagically times with the system clock of the CPU and AMD Ready Ram will run at 3600 MHz. You must set your XMP/DOCP option in the BIOS. But Ryzen makes efficient use of PCIE 4.0 and its fast. You wont be disappointed other than it will push some heat but running any gaming on a 70 MEGS of video cache dedicated to video rendering makes this a seriously badd chip for anything you want to do. Its smoking intel and I have been an Intel Fan for so many years until this thing fell into my hands. All I do for a living is work on PCs Desktops Servers, and Land based internet I go home to this and appreciate all it does. It will not disappoint and will stay strong for years. This absolutely buries Intel. Worth every penny I put towards it. Now my Ryzen 7 2700 will sit in its plastic case. Trust me I had to do it. When I play Ghost Recon with my son it looks as though he is Sprinting it renders frames so fast. The game runs so quick with playing with other gamers your mouse will piss you off you will have to lock the frame rates on your mouse and they move so fast on your screen its simply amazing. Eye candy with games coupled with a NVIDIA RTX you will be amazed. Okay not a fanboy of Ryzen but I love this chip. See how it holds up and I am a verified user.
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Reviewed in the United States on April 7, 2020 by Derrick Henry
Style: Processor
The AMD Ryzen 9 3900X is an amazing processor with outstanding speed and multitasking performance. Installation was easy, and it handles gaming, streaming, and productivity tasks without any issues. Runs smoothly and delivers excellent value for the performance. Highly recommended for anyone building a high-end PC!
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Reviewed in the United States on May 13, 2026 by Thomas
Style: Processor
I absolutely love this CPU (3900X), having come from an old I7-2600K that served me well OC'd way over it's spec. I've got plenty to say about it. It's great at gaming and productivity. Intel can push individual cores higher, but their low core counts and larger process makes them very hot and bottle-necked at multithreaded applications. Be sure to read the warning below about the socket and swapping heatsinks. Thermals When I first got this, I noticed it ran very warm! I read all kinds of complaints on forums of people that couldn't run this cool, or that couldn't OC it. I've been fortunate on both fronts. I went into the UEFI and brought the CPU VCore down to 1.298V while also overclocking to 4.3GHz (all cores). I've never had stability issues with these settings, although I may have simply won the "silicon lottery." The stock cooler is very aesthetic and works pretty well for a stock cooler, but I swapped out the CPU cooler for a Cooler Master Hyper 212 Black Edition, which brought the top temps down by ~10C under load, which I think is pretty respectable. WARNING!!! If you apply a heatsink to this CPU, and then remove it, there's a very high chance that the CPU will pop right out of the socket, glued to the heatsink and in the process bend pins. Bent pins on this processor are *VERY HARD* to fix (at least tedious to bend back without breaking off). The socket retention system on the AM4 socket compared to Intel's is complete garbage!!! I had bent about 3 pins pulling my heatsink off after just a little wiggling of the heatsink on the surface of the CPU by pulling off the heatsink while the CPU was still stuck to it. Yes, the retention arm was still down, and yes, I ensured it was installed correctly before putting on the heatsink. This is just a quirk of this socket. If removing the heatsink, very carefully wiggle it around side to side to try and get air in-between the CPU and heatsink so it doesn't rip out the CPU from the socket. If you're impatient, you probably could just pull the heatsink straight up with the full intention of taking the processor with it, and then lay the heatsink with the processor straight up for removal, but I really wouldn't recommend it (unless that was a last resort). Over Clocking I wouldn't say I'm an expert over-clocker, but I've overclocked my systems for sometime, so I can at least give some starting advice. First, two things kill your CPU faster than anything else: heat, and over-voltage. There are a dizzying array of settings that can be played with in today's UEFIs. The ones to pay attention to are: VCore, CPU ratio, DRAM FCLK, and DRAM voltage. This is a CPU review, so let's stick to VCore and CPU ratio. My advice is to try lowering the voltage on this chip first! This is to reduce the heat put out by this blazing hot blowtorch. I dropped my to VCore 1.298V. Once you've verified that you can boot at whatever voltage you've dropped it down to, now try and overclock by changing the CPU ratio from the stock 3.8GHz to something a bit higher, like 4.3GHz. That's what I've been running with great stability. If you're going for pure performance, then you're going to want to stick with the normal VCore voltages and then push your CPU ratio, but you'd better have a great cooling solution that can handle the extra heat this will produce. Good luck!
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Reviewed in the United States on September 20, 2020 by Axon
Style: Processor
I'll get to the point. Check your motherboard compatibility for the AM4 Matisse 3000 processors (I know most, if not all here already do) before dropping a sizeable amount on this beast of a processor. My current setup is: AsRock X370 Taichi AMD Ryzen 9 3900X XFX Radeon RX 580 8 GB Samsung 970 PRO SSD 1TB - M.2 NVMe EVGA 750W G Phanteks Enthoo Luxe Ballistix 16GB Primarily, I've been using this for gaming and molecular modelling, but everything I throw at it goes through with zero hiccups. I'm using the stock thermal that AMD supplied, and it's holding up to standard workloads of rendering and post-processing, with about ~59°C at 98% utilisation (no overclock). I plan on getting the Grizzly thermal right after this so that under hot days and larger rendering/processing workloads, this powerhouse won't overheat and fry on me. Download the RGB utility for the processor, and you won't be disappointed. I'm currently using the "Zen" mode which makes for a very relaxing experience. I upgraded from a Ryzen 5 1600, and wow was it a jump in performance. VMs, games (video rendering, etc.), Excel, and photo editing will all benefit from the extra processing power needed if you happen to do a lot of work in those areas. While it may be overkill to a point, right now, it's a content creator's best friend. Do consider what your own PC needs and what you will need it for, and if you have the budget as well as a current CPU bottleneck on your machine, I'd highly suggest making this a top contender on your list of things to get. The UNfortunate thing about this CPU is its increased power draw (105.0 W), so do keep that in mind, but overall there isn't much that AMD has disappointed with when it comes to this CPU. The only issue I had was that because I'd put my GPU in the lower slot on the motherboard, when I first powered the machine on after CPU installation, it kept cycling through POST and would not be able to connect to the display at all. This was an error on my part, but if anyone else seems to have the same issue, the solution is to simply plug the GPU into the upper slot closest to the CPU. If you're simply looking for something to game with and stream with, save yourself a bit and stay with the Ryzen 7 or most recent Ryzen 5 CPUs, but if you're needing this for applications such as AutoCAD, weather modelling, biophysical modelling, Photoshop, Deus Ex: Mankind Divided, heavy video editing, then this CPU is very much worth the upgrade from an older processor. Be sure to get some new thermal compound as well, since the stock stuff will only last you for so long before needing to be replaced.
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Reviewed in the United States on July 27, 2020 by Jie L. Xiao-lin
Style: Processor
The new Ryzen 3000 series chips are amazing. I was looking to replace my aging Haswell (4th Gen) Intel Core i7 4790k with something more modern - and when I read about the new Ryzen 3000 series, I waited an extra 6 months to re-build my PC...and boy am I glad I did! I cut encoding times for a 1080p 2 hour movie from 2 hours (near real-time) to < 30 minutes!! And through the power of the PCI-e 4.0 that this enables (when paired with an X570 motherboard), my storage access is now running at 5GB/sec write and read (with a PCI-e 4.0 enables NVMe SSD). Everything is blazing fast even when I have a ton of stuff running. If you’re looking for the ultimate chip for content creation, coding, and a very good option for gaming also (even if it gives up a few FPS to the highest end intel chips), look no further!! And it even comes with a passable cooler (if you don’t mind a bit of noise and don’t plan to overclock) with nice RGB LEDs built in. Quick note for early adopters with first generation X570 boards - several boards (mine included) want to give this chip more power than is really needed. On stock BIOS settings (with automatic voltages), it was providing upwards of 1.5v under load, which would cause the chip to get towards or above 80C, even with a high-end AIO water-cooling system. I put in a manual voltage offset of -0.20 so it doesn’t go above about 1.3V - at that voltage, it performs wonderfully and even under sustained 100% load it never goes above 69C. I gave up a few points in high end benchmarking but in real world loads (even encoding), it’s comparable performance and should improve longevity.
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Reviewed in the United States on October 18, 2019 by Brett