Building a high-end gaming PC doesn’t always mean you need a massive tower case. This comprehensive guide showcases an impressive compact gaming build that packs flagship-tier performance into a surprisingly small form factor, proving that size doesn’t always matter when it comes to raw gaming power.
CPU: AMD Ryzen 7 9800X3D
The AMD Ryzen 7 9800X3D is the heart of this build, renowned for its exceptional gaming performance. Featuring 8 cores and 16 threads, a base clock of 4.7 GHz, and a boost up to 5.2 GHz, this processor leverages AMD’s Zen 5 architecture and second-generation 3D V-Cache technology. The 96 MB L3 cache significantly reduces latency, making it ideal for gaming workloads. According to Tom’s Hardware, the Ryzen 7 9800X3D outperforms Intel’s competing processors by a significant margin, establishing it as the fastest gaming CPU available in 2025.
This CPU was chosen for its unparalleled gaming performance, ensuring smooth gameplay even in the most demanding titles. Its ability to handle productivity tasks also makes it versatile for content creators and professionals.
CPU Cooler: NZXT Kraken Elite 360 (2024)
To manage the thermal demands of the Ryzen 7 9800X3D, the NZXT Kraken Elite 360 (2024) was selected. This all-in-one (AIO) liquid cooler features a 360mm radiator and a custom-designed NZXT Turbine pump, delivering a 10% boost in cooling performance compared to its predecessor. The cooler’s 2.72″ IPS LCD screen, with a 640×640 resolution, allows for customizable displays, adding a premium aesthetic to the build.
Reviews from PC Gamer and Tom’s Hardware highlight its impressive thermal performance, low noise levels, and ease of installation. The 2024 model’s upgraded fans and enhanced screen make it one of the top AIO coolers on the market, perfectly suited for this high-performance, quiet build.
Citation: PC Gamer – NZXT Kraken Elite 360 RGB (2024) liquid cooler review
Motherboard: Gigabyte B850M AORUS PRO WIFI7
The Gigabyte B850M AORUS PRO WIFI7 is a Micro ATX motherboard that supports AMD’s AM5 socket, making it compatible with Ryzen 9000, 8000, and 7000 series processors. It features Wi-Fi 7 for ultra-fast wireless connectivity, two M.2 slots (one with PCIe 5.0 support), and a 12+2+2 phase VRM design for stable power delivery. The motherboard also supports DDR5 memory with AMD EXPO, allowing for easy overclocking.
Tom’s Hardware praises its balance of features and value, noting its DIY-friendly design and robust connectivity options. This motherboard was chosen for its compact size, modern features, and ability to support the high-performance components in this build.
Memory: Corsair Vengeance 96 GB (2 x 48 GB) DDR5-6000 CL30
The Corsair Vengeance 96 GB (2 x 48 GB) DDR5-6000 CL30 memory kit provides high capacity and speed, running at 6000 MT/s with a CAS latency of 30. Supporting AMD EXPO, this kit ensures easy overclocking and compatibility with the AM5 platform. The 96 GB capacity is ideal for memory-intensive tasks like video editing, 3D rendering, or virtualization, while also future-proofing the system for gaming.
User reviews on Reddit and Amazon confirm its reliability and performance with AMD motherboards, making it a fitting choice for this build’s high-end requirements.
Storage: Samsung 990 Pro 4 TB M.2-2280 PCIe 4.0 X4 NVME SSD
The Samsung 990 Pro 4 TB SSD offers blazing-fast performance with sequential read speeds up to 7,450 MB/s and write speeds up to 6,900 MB/s. Its 4 TB capacity provides ample storage for games, applications, and large files, making it ideal for gamers and professionals. Built with Samsung’s V-NAND technology, this SSD ensures reliability and efficiency.
Reviews from Best Buy and Newegg highlight its speed and durability, making it a top choice for high-end builds. This SSD was selected to minimize load times and provide sufficient storage for a modern PC.
Video Card: Asus ROG Astral OC GeForce RTX 5090 32 GB
The Asus ROG Astral OC GeForce RTX 5090 is the centerpiece of this build, featuring 32 GB of GDDR7 memory and NVIDIA’s Blackwell architecture. With support for PCIe 5.0 and DLSS 4, this GPU delivers unparalleled performance for 4K and 8K gaming, ray tracing, and AI-driven tasks. Its quad-fan cooling design ensures low temperatures and quiet operation.
TechPowerUp describes it as a “sensational piece of technology” with exceptional performance and cooling, making it the ideal choice for a build focused on cutting-edge gaming.
Citation: TechPowerUp – ASUS GeForce RTX 5090 Astral Review
Case: Deepcool CH260 MicroATX
The Deepcool CH260 MicroATX case is a compact yet capable chassis, designed to accommodate high-performance components. With full steel mesh front and top panels, it ensures excellent airflow, while the tempered glass side panel showcases the build’s aesthetics. It supports GPUs up to 388mm (or 413mm without front fans) and a 360mm radiator, making it the smallest windowed case capable of housing the NZXT Kraken Elite 360 and RTX 5090.
PCPartPicker users praise its balance of size and performance, noting its suitability for high-end builds like this one.
Power Supply: Corsair SF1000 (2024) 1000 W 80+ Platinum SFX
The Corsair SF1000 (2024) is a 1000 W SFX power supply with 80+ Platinum efficiency, ensuring low power consumption and high reliability. Its fully modular design aids cable management in the compact CH260 case, and it’s ATX 3.0 and PCIe 5.0 compliant, making it compatible with the RTX 5090. The 92mm PWM fan with Zero RPM mode ensures silent operation at low loads.
Amazon reviews commend its reliability and quiet performance, making it a perfect fit for this build’s goals.
Case Fans: be quiet! Silent Wings 4 and Silent Wings Pro 4
To maintain the build’s whisper-quiet operation, two be quiet! Silent Wings 4 (76.7 CFM) and one Silent Wings Pro 4 (83.9 CFM) fans were installed. These fans feature fluid dynamic bearings and optimized blades for high airflow and low noise. The Silent Wings Pro 4 offers multiple speed modes, including an ultra-high-speed option for demanding scenarios.
Hardware Busters highlights their balance of performance and silence, making them ideal for this undervolted, quiet build.
Operating System: Microsoft Windows 11 Home
The build runs on Microsoft Windows 11 Home, leveraging the latest features for performance, security, and user experience. This operating system is a standard choice for modern PCs, ensuring compatibility with all components.
Custom: CORSAIR Type 5 PSU Cable
A custom CORSAIR Type 5 PSU 90° 12V-2×6 Style B cable was included to enhance cable management and ensure proper fitment within the compact case, contributing to a clean and organized build.
Component Compatibility and Performance
The components were carefully selected to work in harmony, maximizing performance while maintaining a compact footprint and quiet operation. The Ryzen 7 9800X3D and RTX 5090 form a powerful duo for gaming and productivity, supported by the high-capacity Corsair Vengeance memory and Samsung 990 Pro SSD. The NZXT Kraken Elite 360 and be quiet! fans ensure efficient cooling, while the Corsair SF1000 PSU provides ample power. The Deepcool CH260 case ties it all together, offering a compact yet capable chassis.
👉 Explore the full high-end gaming PC build for 2025, including detailed part selection, airflow optimization, and upgrade tips here: High-End Gaming PC Build 2025
| Component | Model | Key Specifications | Price (AUD) |
|---|---|---|---|
| CPU | AMD Ryzen 7 9800X3D | 8 cores, 16 threads, 4.7 GHz base, 5.2 GHz boost, 96 MB L3 cache | $799.00 |
| CPU Cooler | NZXT Kraken Elite 360 (2024) | 360mm radiator, 2.72″ IPS LCD, 73.47 CFM | $403.79 |
| Motherboard | Gigabyte B850M AORUS PRO WIFI7 | Micro ATX, AM5, Wi-Fi 7, PCIe 5.0 | $425.00 |
| Memory | Corsair Vengeance 96 GB | 2 x 48 GB, DDR5-6000, CL30 | $539.76 |
| Storage | Samsung 990 Pro 4 TB | M.2-2280, PCIe 4.0, 7,450 MB/s read | $520.00 |
| Video Card | Asus ROG Astral OC RTX 5090 | 32 GB GDDR7, PCIe 5.0, DLSS 4 | $4500.00 |
| Case | Deepcool CH260 | MicroATX, 360mm radiator support, tempered glass | $109.00 |
| Power Supply | Corsair SF1000 (2024) | 1000 W, 80+ Platinum, SFX, fully modular | $311.00 |
| Case Fans | be quiet! Silent Wings 4 (x2) | 76.7 CFM, 2500 RPM, 31.2 dB(A) | $29.00 each |
| Case Fan | be quiet! Silent Wings Pro 4 | 83.9 CFM, 3000 RPM, 36.9 dB(A) | $55.00 |
| Operating System | Microsoft Windows 11 Home | 64-bit, retail download | $25.00 |
| Custom | CORSAIR Type 5 PSU Cable | 90° 12V-2×6 Style B | $39.39 |
Conclusion
This build demonstrates that compact doesn’t mean compromise. By carefully selecting compatible high-end components and implementing proper cooling strategies, it’s possible to create a gaming powerhouse that occupies minimal desk space while delivering flagship-tier performance.
The evolution of compact PC building has reached a point where space-conscious gamers no longer need to sacrifice performance for size. This build serves as a blueprint for enthusiasts who demand the absolute best gaming performance without the footprint of traditional high-end gaming rigs.
Whether you’re working with limited space or simply prefer a cleaner, more minimalist setup, this compact gaming beast proves that exceptional performance can indeed come in small packages. The careful component selection and thermal management create a system that not only performs exceptionally but operates quietly and efficiently – the perfect combination for the modern gaming enthusiast.
FAQ
Is the RTX 5090 worth it for 4K gaming in 2025 compared to the RTX 4090?
Yes, the RTX 5090 is worth it for 4K gaming in 2025 if you want maximum performance with ray tracing enabled. It offers around 20-30% performance gain over the RTX 4090, making it ideal for gamers seeking ultra settings with high FPS in demanding titles.
Does pairing a Ryzen 7 9800X3D with an RTX 5090 cause any bottleneck in modern games?
No, pairing a Ryzen 7 9800X3D with an RTX 5090 does not cause any noticeable bottleneck in modern games. The 9800X3D’s 3D V-Cache ensures smooth performance, especially at 4K resolution where the GPU is the primary limiting factor.
What power supply wattage is recommended for a PC build with RTX 5090 and Ryzen 7 9800X3D?
A high-quality 1000W to 1200W PSU is recommended for a build with RTX 5090 and Ryzen 7 9800X3D to ensure stable power delivery, especially under full load or overclocking scenarios.
How much FPS improvement does the RTX 5090 give over RTX 4090 in Cyberpunk 2077 with ray tracing enabled?
The RTX 5090 provides approximately 25-30% higher FPS than the RTX 4090 in Cyberpunk 2077 with ray tracing and DLSS enabled at 4K, allowing for smoother gameplay even in the most demanding scenes.
Is 32GB RAM enough for future AAA games in 2025 with an RTX 5090 build?
Yes, 32GB of RAM is sufficient for gaming in 2025, even for AAA titles, when paired with an RTX 5090. However, upgrading to 64GB may be beneficial for heavy multitasking or content creation alongside gaming.
What is the best motherboard for Ryzen 7 9800X3D when building a high-end gaming PC in 2025?
The best motherboard for Ryzen 7 9800X3D is a high-end X770 or B750 board with strong VRMs, PCIe 5.0 support, and DDR5 compatibility to unlock the CPU’s full potential and ensure future-proofing.
Does upgrading from Ryzen 7 7800X3D to 9800X3D significantly boost performance in gaming?
Upgrading from Ryzen 7 7800X3D to 9800X3D yields around 10-15% performance improvement in games, thanks to architectural enhancements and higher clock speeds.
How heavy is an RTX 5090 and do I need a GPU support bracket for it?
The RTX 5090 weighs around 2.5 kg (5.5 lbs), making it heavier than most GPUs. A GPU support bracket is recommended to prevent sagging and potential damage to the PCIe slot over time.
Will the RTX 5090 fit in an ATX mid-tower case or is a full tower required?
Most RTX 5090 cards are over 36cm long and require 3.5-4 slots, so a full tower case is recommended for optimal clearance, airflow, and cable management.
How much does a complete gaming PC with RTX 5090 and Ryzen 7 9800X3D cost in 2025?
A complete gaming PC with RTX 5090 and Ryzen 7 9800X3D in 2025 costs approximately $3500 to $4500, depending on the choice of motherboard, PSU, SSDs, cooling, and case.
Hi, I’m Nghia Vo: a computer hardware graduate, passionate PC hardware blogger, and entrepreneur with extensive hands-on experience building and upgrading computers for gaming, productivity, and business operations.
As the founder of Vonebuy.com, a verified ecommerce store under Vietnam’s Ministry of Industry and Trade, I combine my technical knowledge with real-world business applications to help users make confident decisions.
I specialize in no-nonsense guides on RAM overclocking, motherboard compatibility, SSD upgrades, and honest product reviews sharing everything I’ve tested and implemented for my customers and readers.
