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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
4.7 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Good milk frother, drink mixer
Color: Silver
I use this every day to mix my morning protein drink. Love that it's rechargeable. And it doesn't take long to recharge. Be advised that it has 3 speeds, so when you think you're turning it off, it's actually going faster and can splatter your drink. I've learned to mix on 2, then quickly push button to 3 and then off. The speeds aren't that much different, imo, so could have one speed "on', and then 'off'.
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Reviewed in the United States on May 21, 2026
★★★★★ 1
Do not buy
Color: Silver
The worst frother i've ever used. You can't even turn it off without having to go through all the different modes, meaning you will get absolutely splashed and have to clean all the little droplets of whatever you were frothing. The power is weak. The battery did last a long time, I'll give them that. 3 months ON THE DAY the frother stopped working. A very loud noise and decreased power made it unusable. I sent them an email with NO response.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Mixes drinks well and holds a charge
Color: Silver
I bought this frother to replace a weaker frother I had been using for months. I make iced lattes with instant espresso powder, water, and milk, and this frother does a great job at mixing the powder into the water/milk. It also leaves a nice 1" or so of milk froth on the top. I love that it can be charged with a USB-C cable and doesn't require batteries like many frothers do. It's very powerful for the size.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Putting my $.02 into the mix
Size: Basic Frother, Color: Black
My old, lame hand mixer finally gave up the ghost. I ordered one of those “stick blenders” but it was waaaay too powerful for my purposes. (I don’t need it to dice/chop/pulverize fruits or veggies - if you need that, this mixer isn’t for you.) I needed something in between. I kept coming back to the “milk frothers,” but I had my doubts that one of those could mix up my morning shake. I tried a frother some years ago, and it wasn’t designed for blending ingredients, just for frothing liquids. Still, I had an idea (like some of you might) that what I needed was not a true stick mixer, nor a true milk frother. Something in between. I needed a “frother on steroids.”
I settled on this one-the YUSWKO YW-218. It had the regular frothing head, but also two other heads. One looks like a mini bread hook; the other like a mini whisk.
I plugged it into charge and it did take the stated time to come to a full charge. (Like any kid with a new toy, I tried turning it on before charging, but the low state of charge resulted in the high-medium-low settings not behaving correctly.)
For my first few forays into blending, I tried the mini bread hook thingee. It worked OK, but not as well nor as quickly as I wanted. I then shifted to the mini whisk thingee. I didn’t really prepare well. I combined my milk-protein powder-carnation breakfast-malt flavoring-imitation (yeah, I know, it probably causes cancer, but only in California) vanilla flavoring concoction into my normal medium-sized concession cup (you know, the smaller ones you get at high school basketball games), lowered the whisk head into the goop, and turned it to “low.” In a second, I was wearing my shake. But the power capacity was more than enough to do what I was needing.
Anyway, since that first attempt with the whisk head, I’ve gotten the routine down. And it is EXACTLY what I needed. (I’ll try to attach a video to show you.). Clean up is simple. You can do it with soapy water and a brush or rag, but I just run the thing in clear water and ensure I get all the sticky stuff off. I tried the soapy water, but I got a LOT of suds.
A few pointers. First, charge it up all the way before using it. I haven’t had to recharge for two weeks now. You’ll use a regular, small phone-charging brick. (Two words of CAUTION. I found that the included, cheap charging cord did not work. It got really hot, like there was an electrical short in it. So I found one of my own. Also, DO NOT USE the larger charging blocks like the ones from Ap*le. I tried and it was too much.) Second, I assumed that the low speed would be the less aggressive and thus the less “throw-stuff-out-of-the-cup” setting. But that hasn’t proven true for me. I’ve found that the medium setting makes my ingredients behave better (less throw-out and quicker blending). Experiment with different speeds, even though it may not make immediate sense. Third, practice with plain water first (I’ve already told you how I know this). That’ll give you a “feel” for what this frother will do. Fourth, practice with different sized cups. I’ve since changed to the taller concession cups, as they prevent throw-out. Fifth, start practicing with your cups down in a sink. Less mess to clean up and no need to change clothes before you head out to work or school (I’m a teacher). Finally, familiarize yourself with the way the three buttons work. My previous mixer required me to keep the button depressed to blend. If I let up on the button, the unit would stop. Not so with this one. A light press to start, let go, then a light press to stop. Don’t keep mashing the button.
Final thoughts: this frother is just what I needed. If your experience sounds like mine, I think this one’ll give you good service.
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Reviewed in the United States on November 25, 2022
★★★★★ 5
Excellent frother
Size: Basic Frother, Color: Christmas Red
This item works great! I love the red color and how easy it is to clean, and howneasynitnis to charge. I also like that there are three different attachments to choose from.
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Reviewed in the United States on June 8, 2026
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