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Customer Ratings & Reviews

Your price for this item is $439.99

Customer reviews

Rating 4.9 out of 5 stars with 452 reviews

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  • Value

    Rating 4.4 out of 5 stars

  • Quality

    Rating 4.8 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

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98%would recommend to a friend

Customers are saying

Customers find value in the overclocking capabilities, performance, and price of the Core i9-9900K. They appreciate the ease of installation and the noticeable upgrade it provides over previous models. While some users have concerns about its temperature and cost, many agree that it is a powerful and fast CPU.

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 452 reviews
  • Pros mentioned:
    Processor speed

    Rated 5 out of 5 stars

    Fast

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

    The best CPU I've ever had blazing fast speeds!!!!

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

    Rated 5 out of 5 stars

    Bomb CPU

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

    Excellent cpu, doesn't run as hot as some say. Have mine over clocked to 4.8 all cores 1.25v and never see Temps hit 60c under load. Did overclock it to 5.1ghz on all cores 1.35v and Temps were 75 to 78c which is still decent. But be mindfull it all depends on cooling and silicon lottery. Im running a corsair h150i 360 aio radiator.

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

    Rated 5 out of 5 stars

    Worth every penny

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

    Intel has done it again with this chip, and it performs as I expected for the price. Easily overclocks with Turbo Boost to the advertised 4.8 GHz with zero issues. Couldn't get my chip stable at 5.0 GHz, but that's most likely just luck of the draw. Games, rendering, you name it are all fast and smooth. If your budget allows for this CPU, you won't regret picking this up.

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

    Rated 5 out of 5 stars

    Crazy Fast Processor

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

    Want your computer to work almost as fast as your brain? You need this processor, backed up with a good motherboard and memory your pc will run faster than you. Install on new build was straight forward, used a water cooling heat sink on this build and it runs perfect. I have not tried to overclock it at all, I see no need at this point.

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

    Rated 5 out of 5 stars

    Excellent CPU

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

    Pros: This CPU is great. We paired ours with a Corsair AIO cooler and it's fantastic. We bought two and built two computers and they both are just what we wanted. Cons: The decorative container in the picture was broken for both CPUs. Fortunately this didn't bother the CPUs at all, as they are inside a protective box in the center. In addition, there was a price decrease and when I went to get a price match the CSR tried to tell me how their policy is that only one item may be price matched. I let him know that it was either price match both or I'd happily return one and then turn around and buy it again at the lower price. After "talking with his supervisor" he was able to provide a price match on both units "just this once". I absolutely won't stand for that, so if this kind of thing happens again I will return the whatever. You either match the price or don't, people sometimes buy more than one of something.

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

    Rated 5 out of 5 stars

    Fantastic CPU, fast and overclocks well

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Fast, overclocks well (I'm at a continuous 5.1GHz stable without running much of a sweat) and runs around 50-60C under load with a Corsair H115 water cooler. Haven't seen much reason to upgrade to an 11th gen CPU yet. This one continues to shred most everything I throw at it.

    I would recommend this to a friend
    • Brand response from Intel team
      Posted .

      Hello Tony. We are so happy to know that you are having a great experience with our 9th Generation Intel® Core™ i9-9900K Processor. That's amazing! We agree that this model delivers a new performance, gaming on a whole new level, and creativity without limits. It also powers up and customizes your gaming rig with up to 40 platform PCIe lanes giving you outstanding flexibility. Thank you for choosing Intel.

  • Pros mentioned:
    Overclocking, Performance

    Rated 5 out of 5 stars

    Awesome 8 core CPU

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

    I primarily use it for gaming, so being able to OC to a stable 5.1 ghz is huge seller to me. This cpu is probably overkill is any of today’s gaming and I would recommend going with 9700k over this IF you are purely using for gaming. But also being able to use my pc as a workstation is a definite plus.

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

    Rated 5 out of 5 stars

    Best gaming processor on the market

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

    Just recently had a new gaming computer build, this processer can handle anything you throw at it from gaming to any type of high workload software like Adobe. I couldn't have made a better decision and recommend this to anyone wanting a reliable and extremely fast processor. Best processor on the market for the money.

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

    Rated 4 out of 5 stars

    Some improved performance from the I7 9700K but,,

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

    Not huge performance gain compared to the cor i7 9700K when it comes to gaming and overclock-ability. I am using it in my gaming rig paired with aorus 390 pro motherboard and Nvidia RTX gigabybe windforce oc 2080 super gpu. still witnessed some better performance than the I7. but i dont know if it is $100+ more performance. either way great cpu. reaches 5Ghz with some tweeking involved. Also runs a little hotter because of the logical cores at 16 and actual at 8. I am happy with it though, dont get me wrong.

    I would recommend this to a friend
    • Brand response from Intel team
      Posted .

      Hello FriendlyGhost. We are so happy to know that you are having a great experience with our 9th Generation Intel® Core™ i9-9900K Processor. That's amazing! We agree that this model delivers a new performance, gaming on a whole new level, and creativity without limits. It also powers up and customizes your gaming rig with up to 40 platform PCIe lanes giving you outstanding flexibility. Thank you for choosing Intel.

  • Pros mentioned:
    Overclocking, Processor speed

    Rated 5 out of 5 stars

    Great qaulity for the price

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great processer, easy to overclock. I got lucky with mine and test in the 92nd percentile. This CPU will not let you down. I've thrown a lot at it many times and I've never had any problems. After switching from AMD I'd honestly never go back.

    I would recommend this to a friend
    • Brand response from Intel team
      Posted .

      Hello Dylan. We are so happy to know that you are having a great experience with our 9th Generation Intel® Core™ i9-9900K Processor. That's amazing! We agree that this model delivers a new performance, gaming on a whole new level, and creativity without limits. It also powers up and customizes your gaming rig with up to 40 platform PCIe lanes giving you outstanding flexibility. Thank you for choosing Intel.

  • Pros mentioned:
    Performance, Processor speed

    Rated 5 out of 5 stars

    An absolute beast

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    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This CPU is a godsend. I had issues with frame stuttering while doing 3d design and sheet installing this I no longer had any issues, plus I can run way more programs at the same time!

    I would recommend this to a friend
  • Pros mentioned:
    Ease of use, Processor speed

    Rated 5 out of 5 stars

    Loving the OC 9900K

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

    I upgraded from an I7700 to the I9900K and the results are amazing, my computer is running faster and smoother and I am getting a lot more frame rates when Over clocking this CPU. Very easy to install. Must get!!!

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

    Rated 5 out of 5 stars

    Great CPU

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

    The processor has great performance. Runs cooler than the i7 7700k I replaced it with. I overclocked it to 5ghz on all cores stable. Highly recommend albeit comes with a hefty price tag.

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

    Rated 4 out of 5 stars

    Still a beast

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

    Picked this on sale cause i already had board to use and it was just laying around. This cpu is on par with a 10700k. Upgraded from 8700k and have the 9900k @5.0 ghz all cores 1.32 volts it does run a little warm but with stock clock and a decent AIO shouldnt be any problems. Now onto usage i game at 1440 p and live stream at same time using x264 encoder in obs and this thing does really great!

    I would recommend this to a friend
    • Brand response from Intel team
      Posted .

      Hello there. We are so happy to know that you are having a great experience with our 9th Generation Intel® Core™ i9-9900K Processor. That's amazing! We agree that this model delivers a new performance, gaming on a whole new level, and creativity without limits. It also powers up and customizes your gaming rig with up to 40 platform PCIe lanes giving you outstanding flexibility. Thank you for choosing Intel.

  • Pros mentioned:
    Overclocking, Performance

    Rated 5 out of 5 stars

    It's a BEAST of a CPU!

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

    Easy to overclock to 5.1 GHz in a matter of just a few minutes. You can certainly go higher but this baby gets real power hungry and generates a great deal of heat. Performs and benchmarks exactly as expected.

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

    Rated 5 out of 5 stars

    Absolutely great chip

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

    Runs absolutely great, haven’t had any issues with it so far and it runs super fast. Stable at 4.8 and turbos up past 5.1. Would definitely recommend this chip to anyone interested in it.

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

    Rated 5 out of 5 stars

    What a processor!

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Really happy with how my PC runs with this inside. It really compliments my rtx 2080 ti nicely. I would recommend this processor if you multi task and use high end games.

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

    Rated 5 out of 5 stars

    Its a beast!

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

    Upgrade from an i5, it was a beast. Handles a lot of things well. Dont need to overclock it, handles just fine without adding extra. Make sure you have proper cooling for it.

    I would recommend this to a friend
    • Brand response from Intel team
      Posted .

      Hello there. We are so happy to know that you are having a great experience with our 9th Generation Intel® Core™ i9-9900K Processor. That's amazing! We agree that this model delivers a new performance, gaming on a whole new level, and creativity without limits. It also powers up and customizes your gaming rig with up to 40 platform PCIe lanes giving you outstanding flexibility. Thank you for choosing Intel.

  • Pros mentioned:
    Overclocking, Processor speed

    Rated 5 out of 5 stars

    Love it

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

    Love this cpu, use it for gaming and streaming, seems to be able to keep up with the 5000 kbps bitrate, not overheating with water cooler. Playing modern warfare and streaming and only reaching 68.

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

    Rated 5 out of 5 stars

    Cpu review

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great cpu. Intel really should be past 14nm but this still works well for gaming and high cpu use apps. Nice and quiet with a 360mm AIO water cooler depending on load.

    I would recommend this to a friend