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CUK Mantis Gamer PC (Intel Core i9 K-Series, 64GB RAM, 1TB NVMe SSD + 2TB HDD, NVIDIA GeForce RTX 3090 24GB, AC WiFi, Windows 11 Home) Gaming Tower Desktop Computer

  • Based on 118 reviews
Condition: New
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Size: 64GB | 1TB NVMe + 2TB | RTX 3090


Features

  • Processor: Intel Core i9-10900KF Ten Core Processor (20MB Cache, 3.7GHz-5.3GHz) 125W
  • RAM: 64GB DDR4 2933MHz | Hard Drive: 1TB NVMe Solid State Drive + 2TB 7200rpm Hard Disk Drive
  • Graphics: NVIDIA GeForce RTX 3090 24GB GDDR6X | Motherboard: Z490
  • Power Supply: 850W Gold PSU | Operating System: Windows 11 Home x64
  • Accessories: USB AC WiFi Adapter & Wired LED Backlit USB Gaming Keyboard and Mouse Included | 3-Year CUK Limited Warranty (View warranty section below for more details.)

Description

About Computer Upgrade King At Computer Upgrade King (CUK), we are driven to create functional and durable computers that outperform the competition. We prioritize quality and satisfaction above all else. Our team is continuously looking for ways to enhance computers to suit every need, so you can work and play without limitation. CUK Mantis Custom Gaming PC Advanced By Nature Inspired by the Praying Mantis, this desktop was designed to embody balance, flexibility, and allure. The Mantis case has a large interior cavity for your builds, and a toughened glass side window to showcase it. The front and top wings are identical halves that are trimmed in signature Mantis green. 6 pre-mounted green Halo LED fans are included to enliven your build. Optimized for the Best Gaming Experience 6 x 120mm Green Single Ring LED Fans Rainbow Keyboard and LED Mouse Bundle Read more Craftsmanship Found in the Details High Quality Build & Material The frame- less 4mm tempered glass side panel is 3-5 times stronger than ordinary glass. The transparent tempered glass puts your system on display, showing off your hardware and build. In addition, the Mantis ATX interior is big and equipped to easily handle future upgrades. Superior Cooling Light up your Mantis PC with six Halo fans each illuminated by 30 Green LEDs. Your system will be well cooled provided by the six fans for awesome airflow and the intense LEDs will glow vibrantly to enliven your build. Hand Crafted & Stress Tested We’re gamers just like you, so we fully understand your expectations. Each custom desktop is hand built ensuring perfection when assembling. Finished systems go through an intensive burn-in test and over 40 quality check points. Your CUK custom built PC will be ready to plug-and-play the latest games on high settings as soon as you unbox! Read more Aesthetics Matter CUK prides itself on attention to detail. We want our customers to love what they see right out of the box. High quality LED Fans, excellent cable management and top-of-the- line cases provide desktops that look as good as they perform. Read more What's in the Box Computer Upgrade King products are shipping in a CUK branded shipping box. Each Mantis desktop includes: 1x Desktop System1x LED Backlit USB Gaming Keyboard 1x LED USB Gaming Mouse 1x USB AC Wifi Adapter1x AC Power Cord Read more


Processor: ‎3.7 GHz core_i9


RAM: ‎64 GB DDR4


Memory Speed: ‎2933 MHz


Hard Drive: ‎3000 GB mechanical_hard_drive


Graphics Coprocessor: ‎NVIDIA GeForce RTX 3090


Chipset Brand: ‎NVIDIA


Card Description: ‎Dedicated


Graphics Card Ram Size: ‎24.00


Brand: ‎Computer Upgrade King


Hardware Platform: ‎PC


Operating System: ‎Windows 11 Home x64-bit


Item Weight: ‎18.74 pounds


Product Dimensions: ‎20 x 18.5 x 8.6 inches


Item Dimensions LxWxH: ‎20 x 18.5 x 8.6 inches


Processor Brand: ‎Intel


Processor Count: ‎10


Computer Memory Type: ‎DDR4 SDRAM


Hard Drive Interface: ‎Solid State


Date First Available: September 15, 2020


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews


  • Do not buy this pc
Size: 64GB | 1TB NVMe + 2TB | RTX 3080
Do not buy from these guys. They shipped me this computer and I spent all night setting it up only to wake up the next day and have it crash before 24 hours was up. The motherboard was fried before I ever played a game. There was a red light under the SSD and the debug LED light came on. They basically paired an RTX 3080 with an i9 and then well below adequate, motherboard, ram, and power supply. If I’m going to spend 3.3k on a high end gaming pc, I expect it to function for more than an evening. I learned my lesson. If you want a high end prebuilt pc right now, I suggest going to a reputable boutique that specializes in custom builds and offers quality parts across the board. ... show more
Reviewed in the United States on December 5, 2020 by Frustrated Customer

  • DO NOT BUY RTX3090 PCs FROM CUK
Size: 64GB | 1TB NVMe + 2TB | RTX 3090
I would like to start off that I’ve been building custom gaming machines for over 10 years and for a living I am an IT for 15 resorts in a major vacation town. This gets a single star due to the system not coming with the proper motherboard. The company is selling RTX 3090 Graphics cards on PCI express 3.0 slots. The RTX 3090 has 24GB of memory and uses PCI express 4.0. PCI express 3.0 limits the GPU bandwidth at 16GBs therefore already saturating the Motherboard out of box. For over $4200 this computer should at least support the parts it comes with and it does not. I have contacted support for assistance and so far have been denied to upgrade the computer myself. They have stated they ONLY use a Z490-A PRO motherboard. (It is a very disappointing motherboard regardless) HP trust me to work on their computers weekly but this company says I’ll void warranty. I will keep trying to get the rightful part and update this review if they fix their error. I would have said that the computer was excellent if it had come with the correct components. And so I say again if they do not fix this everyone will know... DO NOT BUY RTX3090 PCs FROM CUK. IT WILL NOT BE FULLY SUPPORTED. I AM LIMITED AT 66% of GPU MEMORY. ... show more
Reviewed in the United States on March 13, 2021 by Kevin

  • Had High Hopes
Size: 32GB | 512GB NVMe + 2TB | RTX 3060
This computer arrived very well packaged and appeared to have very high quality components. Initially the boot up was incredibly quick and it handled just about anything I used it for - gaming, streaming multiple movies, etc... About one month later I noticed the boot up slowing until I eventually got the “need boot disk” error. Then within a few days it could no longer handle basic web browsing without having to constantly reboot. For the money it is not worth the frustration and was incredibly disappointing. Edit to add: OMG this thing went from bad to awful! It won’t even boot up anymore! DONT WASTE YOUR MONEY!!!!! IT IS A FRAUD ... show more
Reviewed in the United States on March 2, 2020 by Christopher W.

  • A Gaming and Design Beast
Size: 32GB | 512GB NVMe + 2TB | RTX 3060
I use my system primarily for Graphic Design and Gaming. After 6 years I figured it was time to upgrade since I was starting to play games that I had to drop down to "High" or "Medium" graphics quality. I was honestly surprised at what a big difference the Mantis made in not only games but video editing and graphic design programs in general. The 32GB of ram, SSD and 2080 combine to make a flawless experience so far. I am currently playing Red Dead Redemption 2 and there is a stark difference in both quality and FPS compared to my older system (I7, 16gb ram, 4GB Geforce). I did a fair amount to research and ended up comparing the custom home build versus this Mantis. I came up with the Mantis costing $150 more. My time and aggravation is worth more than $150 so I pulled the trigger. I am glad I did. The components are top notch, the power supply is overkill and the thing looks cool as hell. There are other choices out there and some by the same company but nothing that I could find was the perfect storm of power + price that this system embodies. ... show more
Reviewed in the United States on December 17, 2019 by Sean P

  • Runs smooth
Size: 64GB | 1TB NVMe + 2TB | RTX 3080
Review is for the one that has Nvidia 3080 GPU installed in it. The computer runs very smooth and can play games at 4k on ultra/max settings at 60 fps with an occasional dip to around 45-50 fps on high dense explosions or if viewing from a very far angle. Example being if you're a battle royale fan, Warzone from Call of Duty, the initial plane cutscene on match start will drop your fps to around 45-50. Other than that, if you're wanting to optimize for higher refresh rate monitors, you would need to keep resolutions down to either 1080p or 1440p resolutions and drop graphic settings until you hit the target frame rates. Pros - Green LED fans look good in the case. - Case has plenty of airflow so it isn't stuffy in the case. - Cable management is well done and interior is clean of messy cables. - Computer is fairly light for a desktop mid-tower case. Cons - Price is ouch for 3080/3090 version - Not enough USB ports on the back. Only 4 USB ports (I use at least 7 USB ports, not including ones I use up front) - Fans are a bit loud when under intense loads. Other Notes - Not really a con, but I had to go through device management and get the physical 2 TB HDD to be assigned a drive label, i.e. D-Z letter. ... show more
Reviewed in the United States on November 12, 2020 by Mysterious Gamer

  • Best computer I ever bought!!
Size: 32GB | 512GB NVMe + 2TB | RTX 3060
Actually, this is the FIRST desktop computer I have ever purchased. I have always built my own systems, but now at 81 years old, decided to just find something that will last into the future. Boy am I impressed with this!! I can't seem to find anything bad to say about it. It is fast, quiet, good-looking (just like my ex-wife) and I am so looking forward to the new Microsoft Flight Simulator coming later this year to see how well it performs. I only have good things to say about this computer and CUK!!! ... show more
Reviewed in the United States on February 26, 2020 by Gary

  • Scam
Size: 32GB | 512GB NVMe + 2TB | RTX 3060
the computer came bad. the information in Spanish was incorrect. it said it had a 3070 and it came a 3060. it said it had a 1tb nmve hard drive and it came with a 512gb hard drive. there is a fan that does not work. the motherboard seems shaky while it was transported and I'm afraid it might be broken. the secondary 2tb hard drive was disconnected and with a broken plastic bracket. the product in general had too much dust inside. for all this and more I decided to return it. this is disappointing. Edit: I have been waiting for my money back for this product for almost 2 months and it has not been returned to me yet. I have called customer service several times and nothing has happened yet ... do not trust this company because it makes everything difficult for you ... show more
Reviewed in the United States on June 8, 2021 by Rolando Angeloandrea Justo Gonzalez

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