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Description
MSI Infinite RS -678US Gaming PC - Intel corei9-14900KF RTX4090 32GB, 2TB HD, Win11 PROStep into a new era of gaming with the MSI Infinite RS 678US, a premium prebuilt desktop engineered for true enthusiasts who demand uncompromised performance, stunning visuals, and effortless future proofing. Powered by the Intel Core i9 14900KF processor and the NVIDIA RTX 4090 GPU, this rig is designed to handle the most demanding titles at high refresh rates, delivering immersive 4K gameplay, ultra realistic ray tracing, and consistently high FPS
Step into a new era of gaming with the MSI Infinite RS-678US, a premium prebuilt desktop engineered for true enthusiasts who demand uncompromised performance, stunning visuals, and effortless future-proofing. Powered by the Intel Core i9-14900KF processor and the NVIDIA RTX 4090 GPU, this rig is designed to handle the most demanding titles at high refresh rates, delivering immersive 4K gameplay, ultra-realistic ray tracing, and consistently high FPS across modern lifelike environments. With 32GB of high-speed RAM and a generous 2TB hard drive, the Infinite RS-678US promises seamless multitasking, rapid game loading, and ample storage for large titles, media libraries, and creative projects. Preinstalled with Windows 11 Pro, it combines gaming muscle with enterprise-grade security and productivity features, making it a powerhouse for both entertainment and work tasks that require reliability under pressure.
- Exceptional gaming performance with an Intel Core i9-14900KF and RTX 4090. This pairing is built to dominate modern titles at ultra settings, delivering jaw-dropping visuals, high frame rates, and responsive gameplay that feels instant. Whether you’re chasing competitive advantage in esports or exploring expansive open worlds, this combination keeps you in the driver’s seat with minimal bottlenecks and maximum realism.
- 32GB of premium DDR5 RAM ensures silky smooth multitasking and future-ready memory bandwidth. Switch between demanding games, streaming, and creative software without slowdowns or stutter, and enjoy faster load times thanks to the memory’s efficiency and responsiveness. The RAM capacity also supports immersive VR experiences and heavy content creation workflows with ease.
- 2TB of hard drive storage provides abundant space for your game library, media, and data, letting you install blockbuster titles without worrying about space. The large capacity supports a well-organized storage strategy, enabling you to keep favorite games, media collections, and project files readily accessible while still leaving room for expansion with additional drives or SSD options in the future.
- Windows 11 Pro preinstalled for a secure, productive environment. Beyond gaming, you gain a polished user experience, robust security features, and streamlined workflows. The operating system is tuned to maximize performance with MSI software utilities, exclusive gaming modes, and optimized drivers that help you squeeze every ounce of power from the hardware.
- Premium cooling, robust chassis design, and MSI engineering excellence. The Infinite RS-678US is built to sustain peak performance under load with an efficient cooling solution, reinforced case with thoughtful cable management, and accessibility for upgrades. The result is cooler temperatures, quieter operation, and a solid foundation for future enhancements as new hardware becomes available.
Technical Details of MSI Infinite RS-678US Gaming PC
- CPU: Intel Core i9-14900KF
- GPU: NVIDIA RTX 4090
- Memory: 32GB DDR5 RAM
- Storage: 2TB HDD
- Operating System: Windows 11 Pro
- Chassis: MSI premium gaming case with optimized airflow and accessibility for upgrades
- Power and Cooling: Advanced cooling solution designed to maintain stable performance during extended gaming sessions
- Connectivity: Ready for high-speed peripherals and displays with modern ports, including USB-C and USB-A options
How to Install MSI Infinite RS-678US Gaming PC
- Unpack the MSI Infinite RS-678US carefully and place it on a sturdy, well-ventilated surface. Ensure you have access to power, monitor, keyboard, and mouse before proceeding.
- Connect your monitor to the appropriate display outputs (HDMI 2.1 or DisplayPort) and attach your peripherals. Use a surge-protected power strip to safeguard the system during setup.
- Plug in the power cord and press the power button to boot. If this is the first start, follow the on-screen prompts to complete the Windows setup and create or sign in to your Microsoft account.
- Run Windows Update to install the latest security patches and device drivers. Check MSI software utilities for recommended driver and performance updates to optimize your gaming experience.
- Activate Windows 11 Pro features as needed and tailor your system with game optimization profiles, color calibration, and performance presets using MSI Command Center or similar utilities to match your preferences and monitor capabilities.
Frequently asked questions
- Q: What kind of performance should I expect from the MSI Infinite RS-678US with an RTX 4090 and i9-14900KF? A: You can expect top-tier gaming performance across current titles at ultra settings, including smooth 4K playback, high frame rates in demanding games, and strong VR readiness. This configuration is designed to deliver consistent, high FPS with ray tracing enabled where supported.
- Q: How much storage does the PC have, and can I add more? A: The system ships with a 2TB hard drive for space-rich storage. It’s common for such builds to offer additional upgrade paths for SSDs or extra HDDs, allowing you to expand capacity and performance as needed.
- Q: Is Windows 11 Pro preinstalled? A: Yes, the MSI Infinite RS-678US ships with Windows 11 Pro preinstalled, providing enterprise-grade security features, virtualization options, and a refined gaming experience.
- Q: Can I upgrade the RAM or storage in the future? A: The design typically supports upgradeability for memory and storage to accommodate future titles and software needs. Check the chassis layout and available slots or consult MSI support for upgrade guidelines.
- Q: Is this PC suitable for VR and multi-monitor setups? A: Absolutely. The RTX 4090 enables high-fidelity VR experiences, and the system is well-equipped for multi-monitor gaming setups, providing ample graphical horsepower and display support.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Must for subwoofers. True 2mm spec. High quality.
Model: 36 SqFt(3.4 SqM), Model: 36 SqFt(3.4 SqM)
Let me start of by saying WOW! This made a huge difference in the SQ of my L7S pushing 930w rms. Before I had major rattles in my 2020 Honda Civic SI. Taking the time to do this to my trunk and Lid made me realize just how loud my subwoofer actually is. It literally eliminated the rattles throughout my whole car. I still plan on doing this to my doors and rear deck but once I upgrade the speakers. I still have half of the box just doing the trunk and lid so 1 box of 36sf will be enough for most of the areas that need to get done. You may need a little more overall. This is true 2mm spec. Very sticky and easy to apply. It just take time to finish the work correctly and roll it down. It is not as heavy as I thought it was going to be. The size of the sheets are perfect for what you need to do. The value is on point for the quality. It does not rip very easily but you can cut it to size without any problems. Again, This is a must buy for anyone who is pushing 1000w rms or more.
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Reviewed in the United States on November 29, 2025
★★★★★ 5
Quality product you
Model: 18 SqFt(1.7 SqM), Model: 18 SqFt(1.7 SqM)
Summary: Great quality product, priced right. Cuts and installs easy-follow the instructions people!! PRO TIP-you don’t need to cover every square inch. OVERKILL!! Think about it-when a bell rings you could put your fingers on the edge and silence it right? Same rules apply here. A strip or square will isolate the vibration and notice when placed correctly— knock on the surface and see what vibrates or what part makes the loudest drowning and that’s a good clue of where you should put a piece of this…unless you’re trying to use it for temperature insulation no need to go ape on it. If you look at the bottom of a stainless steel sink, it’s got a stripe or a small sticker of insulation that keeps it from rattling. You can do that here. What’s important to note is the instruction specifically say use a roller to roll the ribs out until it’s smooth that way you’ve got maximum adhesion. I see a lot of pictures and videos from people that finished their install and didn’t follow this simple instruction. It makes sure that it’s stuck down before you put all your paneling and carpet back in and it’s a small step with a cheap wooden roller it’s easy. I’ll say the installation with this product is a breeze. You can use sharp scissors or a blade. It does get gummy after a while, and you may need to clean off your blade or your scissors, but it cuts very well and the ribs make it easy to size in space the thickness is fantastic and the backing paper comes off quite easily. I’ve done lots of installations with Graphics emblems you name it and this product is very easy to use and represents good value.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Good stuff !
Model: 36 SqFt(3.4 SqM), Model: 36 SqFt(3.4 SqM)
This is an excellent product. Easily moldable, cuttable with good scissors or razor knife, very sticky, works great.
This pack was enough to do all 4 doors on a crew max truck, and I went wild on the fronts. I used 9 peices on each rear door which was just enough, and the rest on the fronts. I doubled up layers and even used some on the back of the door panels. If you follow the instructions and dont go wild you might even have extra left over.
It works just like you would imagine. Without doing the entire cab there will still be road noise but this helped noise, better audio, no buzzing door panels, terrific improvement.
It is kind of heavy, so extra weight is added to truck, but that really isnt a bad thing. It is noticable but in a good way.
Get it. Use it.
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Reviewed in the United States on March 20, 2026
★★★★★ 4
Good product
Model: 36 SqFt(3.4 SqM)
Easy to roll out. Works great
Why did you pick this product vs others?:
Fair price for the amount of coverage, good quality
Works well:
Easy to install, rolls out great. Forms to contours well
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Reviewed in the United States on July 13, 2025
★★★★★ 5
Great product
Model: 36 SqFt(3.4 SqM)
I used this on the doors of a Toyota Tacoma, worked as it described. Reduced the road noise significantly.. Need to buy another box for the floor and roof of the truck..
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Reviewed in the United States on May 15, 2026