Save up to 50% on 3-Day Sale deals.Ends 12/14.Shop now

Skip to content
Gift Ideas
Main Content

Customer Ratings & Reviews

Your price for this item is $499.99

Customer reviews

Rating 4.9 out of 5 stars with 331 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.7 out of 5 stars

  • Quality

    Rating 4.9 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

Pros mentioned filter

Cons mentioned filter

There aren't enough negative mentions yet.
99%would recommend to a friend

Customers are saying

Customers are impressed with the Ryzen 9 3900X's performance, price, and gaming capabilities. They appreciate its multitasking abilities and find it suitable for video editing. However, some users have concerns about cooling and compatibility issues, while a few mention potential motherboard limitations and bottlenecking.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 2 Showing 21-40 of 331 reviews
  • Rated 5 out of 5 stars

    Fantastic

    |
    |
    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Paired with a gigabyte 3070, EKWB custom water loop!! Love it.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Performance, Price

    Rated 5 out of 5 stars

    RYZEN FTW!

    |
    |
    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The Ryzen 9 3900X really surprised me with its performance. If you are a hardcore Intel fan, then this review is not for you. But, if you are willing to give Ryzen a shot, then I would say go for it. Been using this for gaming and as well some editing, to my surprise, its really working smooth. The temperatures are low on heavy load. I am running the base 3.8GHz, haven't overclocked it and I don't find any reason or purpose to overclock it. AMD really stepped up their game this time. The price is also affordable compared to its competitor. P.S. - My personal opinion, I am happy with it. I also use an Intel i7-8700K system as well.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Performance

    Rated 5 out of 5 stars

    Incredible CPU

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This CPU is a total overkill for almost any workload. I can have basically every piece of productivity software that I have running at once, with a browser open and 100+ tabs with a video playing and still play a AAA game with very little performance loss. So if you are just a gamer then this CPU is a bit excessive. A Ryzen 7 X3800 would probably be a better choice, but if you game and run heavy multithreaded workloads like 3d modeling / CAD, video editing, or rendering then this CPU is awesome. It can run games incredibly well while still crushing heavy multithreaded workloads. With this CPU I can work on models with way more active points in Zbrush. My old CPU (Intel i5-4690K OCd to 4.4 Ghz) would start stuttering around 2-4 million active points, while this CPU can handle around 20 million. It is very nice to be able to work on a model at that detail level without having to use Zbrush’s Geometry HD feature. Another big advantage of having this many cores is that even while a heavy multithreaded workload is running there is usually still enough CPU left for normal computer functionality. When I was stress testing this CPU I ran Prime95 then I forgot to stop it. I went on browsing online and watching a video without noticing that anything was wrong until I started to run another benchmark. I really noticed this when I rebuilt the lightmapping in Unity the other day and I could still use my computer normally, with my old CPU my PC would be barely function during this process. Admittedly most applications that are really multithreaded allow you to set how many threads you want them to use, but with this may cores you will probably never even have to think about it. As many other people are reporting mine does not seem to turbo up to 4.6 GHz, the most that I have seen on my monitoring software Is around 4.54 GHz, but this CPU is so powerful that I do not really care. Plus I get a solid 4.15-4.2 Ghz clock on all core loads, which is really good considering the rated base clock is 3.8 Ghz. I get cinebench R20 scores that average around 7350, my old CPU just got 1580. Idle temps are around 40C and full load temps are about 70C in a good air cooled case. I am using an ASUS TUF 570 motherboard (which I highly recommend) and 32 GB of 3600 MHz ram.

    I would recommend this to a friend
  • Pros mentioned:
    Processor speed

    Rated 5 out of 5 stars

    Thing's an absolute monstrosity

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Paired it with an ASUS X570 TUF Gaming (Wifi) motherboard with 32Gb of DDR4 3200 RAM and a Radeon RX 5700 XT 50th Anniversary Edition, you know, just to stick it to the Man. Thing's an absolute monstrosity, chews through any workload like Garfield through a lasagna. Versus Intel's i9 9900k, you won't see a difference in gaming unless you're counting a few frames difference that you'd never notice without the FPS counter. The kicker is the multithreaded performance. If you're, say, running high resolution video editing or rendering programs, then the Ryzen 9 3900X humiliates the i9 9900k. Indeed, it stuffs the 9900k into its locker with a bag of dirty gym socks. Then it takes the 9900k's girlfriend to the senior prom. Then it cheats on her with the 9900k's sister. If you want a workstation that doesn't skimp on gaming prowess, look no further. The Ryzen 9 3900X is the new kid in town, new starting quarterback, class president, valedictorian, dating the captain of the cheerleaders.

    I would recommend this to a friend
  • Pros mentioned:
    Processor speed

    Rated 5 out of 5 stars

    Great chip, Great service too.

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Everyone is already aware that this is a beast chip, so I won't dive too much into the product itself. If you are mostly just gaming, get a 3700x and put the extra money into upgrading your other components. For 3D rendering, virtualization, or other heavy workloads, this is an amazing value. I live on an island with no retail electronic stores nearby, so I order just about everything online. Best Buy was one of the few vendors to restock the 3900x at MSRP, which was a big deciding point for me giving them my business. They also offered fast, free shipping. Also want to give a shout out to Rigen from Best Buy customer care. I ordered right before they added the Outer Worlds/Borderlands 3 bundle. Called them up and asked if I could get a code and the support was great, everyone I talked to was very polite. Said I should get an email within 24-48 hours. Received it about an hour. Rigen sent me a separate email and called and left a voicemail to let me know it went through successfully. Overall, it's been a great experience, and my first time back on AMD in about a decade. My rig: 3900x MSI x570 Ace 2x16GB TridentZ 3200 CL14 (B-Die) RTX 2080 + GTX 1080 (octane render doesn't need identical cards) 2x 1TB WD SN750 1TB Micron 5100 Pro SATA M.2

    I would recommend this to a friend
  • Pros mentioned:
    Cores, Performance

    Rated 5 out of 5 stars

    Currently the most powerful Processor

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I recently built a new PC coming from a Intel 3770K. The 3770k is still a good processor and I still use the machine but as far as speed the Ryzen 9 is roughly twice as fast on average but this depends on the programs you're running. The speed of the system in general feels much faster, much of this can be attributed to moving from and SSD to an M.2 drive but having 12 fast cores certainly plays its part. One thing I should state is do not fall for the M.2 PCIe 4.0 marketing pitch. They are currently twice the price per GB and under normal circumstances are "slower" then Samsung Pro devices and most cases slower then even the Adata 8200. Maximum transfer speed means almost nothing in typical use. I may need to revise this statement next year when better dives hit the market but for right now save your money or use it on better memory or gpu.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Performance

    Rated 5 out of 5 stars

    Best performance for the money at this time

    |
    |
    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Processor has been holding up great in my home-built system. Paired to Aorus Master x570, 64GB of 3200cl14 ram, liquid cooled, it holds 4250 well with bursts into 4300/4350 on some cores sometimes. Have not had any compatibility problems and with the latest microcode (firmware) it has been doing a tiny bit better (sustained +30MHZ)

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Processor speed

    Rated 5 out of 5 stars

    Unbelievable Performance

    |
    |
    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Using this processor inside of a editing/gaming computer alongside a RTX 2070 Super. For reference, I'm cooling it using a Corsair H100i with Noctua Design fans mounted to the radiator, inside of the Fractal Design Meshify C. Performance on this thing is insane, and this processor is a beast in any sort of editing (Adobe premiere). Temperatures aren't nearly as high as I was expecting either, running under 50°C in most of the games a play. All in all, it's the best processor I've ever owned and my first time trying a product from the AMD side. Don't be afraid of switching if you haven't already.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Processor speed

    Rated 5 out of 5 stars

    Incredibly fast. And capable

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Will run multiple programs, including a game, multiple browser windows, a live stream, and not even hit 20% load. Multitasking monster. Comes with a very capable cooler, unlike its Intel counterparts, and for cheaper compared to a similar model.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    Some of the best!

    |
    |
    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I was mining raptoreum (ghostrider) with this bad boy and it did great now im useing it for my every day computer needs, im funning https://github.com/lllyasviel/Fooocus and its just great!

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Cores, Processor speed

    Rated 5 out of 5 stars

    Worth every cent.

    |
    |
    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have had this CPU for over a year and it has plenty of power for just about anything your going to do. Usually runs about 4.2Ghz and stays frosty with liquid cooling. Plus 12core/24 thread: how cool is that?

    I would recommend this to a friend
  • Pros mentioned:
    Performance, Price

    Rated 5 out of 5 stars

    This processor is amazing for the price point.

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Paired with SSD (NVMe if possible) and fast ram, this CPU delivers amazing performance. The price point is perfect and is years ahead of Intel. This is the second system I've built with the Ryzen 9. I've yet to have any issues or BSOD crashes in the past 9 months since building my first system. Boot up time is less than a few seconds. Games and other applications are very fast. I am running about 9 virtual MS Servers and a couple of Windows 10 VMs and still have plenty of CPU overhead to play modern games like CONTROL or Stat Wars and even VR without a problem.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling

    Rated 5 out of 5 stars

    Old Reliable

    |
    |
    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It's reliable it's served me well and the overclock has been pretty good on it and it runs cool as a cucumber I haven't had one problem with it since I got it

    I would recommend this to a friend
  • Pros mentioned:
    Cores, Performance, Processor speed

    Rated 5 out of 5 stars

    Fast Processor

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    One of the fastest processors you can buy with all the cores you will need for all kinds of tasks and it plays games very well.

    I would recommend this to a friend
  • Pros mentioned:
    Performance

    Rated 5 out of 5 stars

    AMD delivers

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have an I9 9900k/Godlike and it is awesome but this new AMD processor is fantastic. I use this machine for more “creative” uses and it can multitask with phenomenal results. I do game with it too and it doesn’t give an inch to the 9900k. The cooling solution is a nice added (Wraith) bonus and I was able to achieve a mild over clock but didn’t even feel need to push it as it tackles everything I throw at it.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Processor speed

    Rated 5 out of 5 stars

    Worth the wait.

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Meet the chip that gave Intel some Humble pie. I always got Intel chips. First AMD chip, so far so good. I am not a gamer, but the new build with this chip is lighting fast. I play Blu Rays. Stream to. Opens programs really quick. I like the software from AMD to boot. Very easy to Over Clock it to. Yeah the 3950X is better but the price is higher to. I am using water cooler, runs reasonable temps under load. PCiE 4.

    I would recommend this to a friend
  • Pros mentioned:
    Processor speed

    Rated 5 out of 5 stars

    Bought it for wider compatibility

    |
    |
    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This processor will work with some older boards that the 5900X won't. The fastest 12 core AMD processor that comes with a cooler.

    I would recommend this to a friend
  • Pros mentioned:
    Cores, Processor speed

    Rated 5 out of 5 stars

    Oh my goodness - this thing rocks!

    |
    |
    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I've been building computers since I was a kid. I gave it up a few years ago but this thing teased me back into making a new machine vs a store-bought unit. If you' haven't read anything about it, let's just say this thing moves. 12 cores, 24 threads, and good speed. It eats everything I throw at it. I never knew photoshop could run this well. No problem with top tier game titles. If you're in the market, this is the chip to buy.

    I would recommend this to a friend
  • Pros mentioned:
    Performance, Price

    Rated 5 out of 5 stars

    3900x

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Awesome processor for gaming and multitasking definitely affordable

    I would recommend this to a friend
  • Pros mentioned:
    Cooling, Performance

    Rated 4 out of 5 stars

    Processing power for gaming or work.

    |
    |
    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I've been running this processor for several months and I can say it does what it is supposed to do. With the large number of cores playing games and livestreaming is fairly easy to pull off, especially if you have secondary software that allows you to assign which cores handle specific processes. On top of that, while waiting for a video to render there is enough power in this thing to allow you to enjoy some video streaming or a low-end game while you wait for your video editor to finish its job. The one downside is cooling and I recommend an aftermarket cooler if you plan on pushing this processor to its limits. I'm currently using an all in one watercooler for this processor.

    I would recommend this to a friend