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Thermaltake

Thermaltake LCGS Reactor i90 Gaming Desktop (Intel Core™ i9-14900KF, 32GB 5600MT/s DDR5 RGB Memory, NVIDIA GeForce® RTX 4090, 2TB NVMe M.2, WiFi, Windows 11)

  • Based on 93 reviews
Condition: Used - Like New
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Size: 14900KF | 4090 | 32G D5


Features

  • Intel Core i9-14900KF, B760 Chipset Motherboard, 32GB DDR5 5600MT/s RGB Memory, 2TB NVMe M.2, WiFi
  • NVIDIA GeForce RTX 4090, Display Port/HDMI
  • Chassis I/O - 1x Type C, 2x USB 3.0, 1x Headphone, 1x Mic Ports

Description

What better way to power your battle station than the Reactor i90. Its unique octagonal prism shape isn't just a statement piece; it's a testament to innovation, designed to offer superior cooling and performance. Powered by the formidable i9-14900KF CPU and the revolutionary RTX 4090 GPU, this gaming behemoth delivers unmatched performance for an immersive gaming experience. With 32GB of high-speed 5600MT/s Memory and a massive 2TB NVMe SSD, say goodbye to load times and hello to instant action.

Brand: Thermaltake


Operating System: Windows 11


CPU Model: Core i9


CPU Speed: 3.2 GHz


Graphics Card Description: Dedicated


Graphics Coprocessor: NVIDIA GeForce RTX 4090


Memory Storage Capacity: 32 GB


Memory Slots Available: 4


Specific Uses For Product: Everyday Use, Gaming


Personal computer design type: Computer Tower


Max Screen Resolution: ‎5120 x 2880


Processor: ‎3.2 GHz core_i9


RAM: ‎32 GB DDR5


Hard Drive: ‎2 TB SSD


Graphics Coprocessor: ‎NVIDIA GeForce RTX 4090


Chipset Brand: ‎NVIDIA


Card Description: ‎Dedicated


Graphics Card Ram Size: ‎24 GB


Wireless Type: ‎802.11ac


Number of USB 2.0 Ports: ‎10


Number of USB 3.0 Ports: ‎2


Brand: ‎Thermaltake


Series: ‎Reactor i90 -Black


Item model number: ‎TW3B-B760-490-LCS


Operating System: ‎Windows 11


Item Weight: ‎42.5 pounds


Package Dimensions: ‎25.28 x 16.61 x 15.98 inches


Color: ‎Black


Processor Brand: ‎Intel


Number of Processors: ‎1


Computer Memory Type: ‎DDR5 RAM


Flash Memory Size: ‎2 TB


Hard Drive Interface: ‎Solid State


Hard Drive Rotational Speed: ‎1


Date First Available: March 20, 2024


Frequently asked questions

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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.

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Top Amazon Reviews

    • Obviously built to be a long-term investment.
Size: 3700X | 3070
I ended up with the Ryzen 3700/RTX 3070 build at a seriously amazing price right before the shortages quintupled the price of an RTX 3070. PRO: - This system is a QA beast. So, let me attest that Thermaltake's build quality on my system is the best I've seen of any prebuilt desktop in my 30 years of owning PCs. None of the components were loose or janky, and I was able to pull the packing materials away from the system with no debris on the system. - Out of the box, this system uses nowhere near the 650W the PSU is capable of pulling. That plus the PSU's gold rating has protected everything during two outages thus far. I still intend to buy a UPS, but knowing Thermaltake went above and beyond for the PSU says Thermaltake intends these machines to be long-term investments for every customer. - The GIGABYTE RTX 3070 OC 8G is one of the most reliable and finely tuned 30-series cards on the market. It's factory OC'd to 1815Mhz and can easily be OC/UV to that performance at .875v. Afterburner has full support for unlocking, custom fan curves, limits, and more. CON: - The open case has advantages and disadvantages. If you live in a clean house, the open design is perfect. If you live in a house where people think "dust on the table" is a remix of the song "Dust in the Wind," you'll need to use an air blower every month or so. That said, I have had NO issues with performance or static electricity risking components. Thermaltake did an insanely good job making sure this build doesn't have shortage risks from a little dust buildup. - The lack of accessories for this case is frustrating. It's a modular case, but I'd have to buy a whole separate tower to get things like the extra glass panels to fit to the sides. This is leading me to want to replace the case altogether for something more traditional. Lastly, THINGS I WISH WERE INCLUDED: - Information on installing full liquid cooling. I would love for a Thermaltake-approved guide on what to buy from them to replace the RTX fans and the CPU liquid cooling with a full liquid cooling setup. - Recommended accessories. I'd like a list of suggested self-upgrades for my system. If I want to add a second NVMe, what would Thermaltake recommend? Would Thermaltake recommend additional RAM? What are some recommendations I can have that give me something fun to look forward to with this system? This is an investment, right? How can Thermaltake help me evolve this system over time using new components or other products in the Thermaltake shop? - I would pay big big bucks for Thermaltake to give me a detailed video walking through the AORUS B550 BIOS settings, how to update the RTX 3070 BIOS, any nifty features or advanced tips. Stuff that's just between Thermaltake and its customers. Everyone who buys Razer gets this "club" treatment, and I want to be in the Thermaltake Club. ... show more
Reviewed in the United States on April 30, 2021 by Joshua D. P.
    • Faulty psu and terrible customer support
Size: 14700KF | 4070Ti S | 32G D5
When I bought the Thermaltake LCGS Reactor i7TS, I expected a reliable prebuilt system from a reputable brand. What I got instead was a fire hazard of a power supply and one of the worst customer service experiences I’ve ever had. Within just a few months of light use, the PC began tripping my circuit breaker—every single time I plugged it in. After extensive troubleshooting, testing outlets, breakers, and even removing the PSU entirely from the case, it was clear: the PSU itself was the issue. On closer inspection, I found what looked like burnt or melted components inside. Naturally, I contacted Thermaltake support expecting a straightforward PSU replacement under warranty. Instead, I was told I had to send the entire PC back—including drives with personal data—just to replace a single, clearly faulty part. Despite me doing all the legwork to isolate the issue, they refused to accept that only the PSU needed to be replaced. Their support emails didn’t inspire confidence either—full of spelling errors, poorly written, and lacking any professional tone. If they can’t be bothered to proofread an email, it makes you wonder how careful they are with actual hardware and RMAs. Update (Over a Month Later): After nearly two months of back-and-forth emails, they finally sent me a replacement PSU. I had to argue with them to avoid shipping the entire system back, and even then, the process was a mess. They told me the part would arrive on a Monday, didn’t ship it until that Monday, and it didn’t arrive until Friday. So I was without a usable PC for multiple months—just because they refused to send out a single component when I first reported the issue. To make matters worse, they got my shipping address wrong multiple times. I had to send them the same correct address repeatedly. At one point, they sent me an email asking “Is this okay?”—with my own name listed as the city, the wrong state, and the correct zip code. How does that even happen? Yes, I finally got the replacement PSU. Yes, once I installed it, the PC worked fine. But for a high-priced prebuilt from a known brand, this should never have happened. A power supply failing in just a few months is unacceptable, and the RMA process was an absolute nightmare. If you're thinking, “Hey, it’s a prebuilt—it’ll save me time and hassle,” think again. I ended up doing more work troubleshooting and arguing with support than if I had just built it myself. Bottom line: Avoid. Not worth the risk or the customer service headache. ... show more
Reviewed in the United States on February 24, 2025 by John
    • Stunning looking gaming rig.
Size: 3700X | 3070
Review Image by Rob Boudreau Rob Boudreau
Review Image by Rob Boudreau Rob Boudreau
Review Image by Rob Boudreau Rob Boudreau
I was in high school in the 90’s and was one of a handful who was into computer gaming. Built my first machine before I was an adult. I left the pc master race for console gaming for a couple decades and this is my return, despite getting a PS5 on day 1. We’ve come a long way. In February 2021, this was a nice value for a machine with a Gigabyte GeForce RTX 3070 8 GB GAMING OC inside. In fact, the price jumped $300 after I bought it (and I paid approx $400 over retail). Aesthetically, well, you are reading this review because you saw it and said “wow”. They pack this guy like they are shipping their firstborn child. Solid box, pc bolted to a metal plate on the box, and packing foam was well placed. Check all your connections, some may come slightly unseated as you get everything unpacked. Truly “turnkey”. Was up and running playing Crusader Kings 3 via Steam in about 15-20 minutes. Most of that was getting machine unbolted and the tempered glass off and back on to remove packing foam. Builder saved a Superposition benchmark test result on the desktop. I ran it and got same result. Nice to see they checked it over for quality control. Temps stay cool. Everything runs smooth with one glaring exception. The motherboard seems to be a weak spot. You’re going to be irritated dealing with the RGB side of things and have had a couple USB pains. Issues: -RGBFusion 2.0. Good luck consistently seeing all components when you boot it up. Eventually, you may get everything looking how you want it. -50% of the time, Toughram abandons my RGB setting and feels like being rainbow for a day. -Keyboard/mouse. Have updates. Steelseries Apex 7 and Rival 3. Random loss of USB recognition. Roughly 3-4 times I’ve had to unplug and try a different port. ... show more
Reviewed in the United States on March 6, 2021 by Rob Boudreau Rob Boudreau

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