Best RX 6900 XT Gaming PC Build (Ryzen 5900X + Radeon RX 6900 XT)

Ryzen 9 5900X + Radeon RX 6900 XT Build is the best solution to enhance gaming PC performance. Usually, NextGen Ryzen and Radeon come at the top level when we desire to have the most affordable and impressive PC solution.

Recently AMD announced a fantastic idea for a midrange last-generation GPU with its Radeon RX 5700XT. However, all gamers have a lot of questions in their mind, whether this powerful GPU is an ideal solution or not. AMD works hard to provide modern gaming features such as 8k gaming capabilities or ray tracing. 

Meanwhile, AMD launches Radeon RX 6900XT to cope with the innovative standard and best throughputs for its users. Well, it is packed with ray tracing technology and a ton of graphical performance. Radeon RX 6900XT is equivalent to the latest Nvidia RTX 3900. If we evaluate, we realize that Radeon RX 6900XT is the perfect solution from every point of view, and it is quite a cheaper solution. 

 In early 2021, we are not capable enough to understand what a good (not critically expensive) gaming PC looks like, capable of running all new games with an average number of frames per second (at least 60 FPS) in Full HD resolution. What processor, video card, the motherboard should be installed in it? What drives, how much RAM, and how much power should the power supply be?

. We will assemble the optimal 2021 gaming computer in two configurations with different processors: Ryzen 9 5900X and Radeon RX 6900 XT, with less consuming cost. This build of the PC will have the relevant components today, and it will be a good gaming PC based on a 6-core and 12-thread processor.

In this article, we focus on the Best RX 6900 XT Gaming PC Build. After reading our perspective, you might be interested in making your gaming pc with Ryzen 9 5900X + Radeon RX 6900 XT Build. So, if you desire to have the best gaming PC by using AMD CPU and GPU, then this article is specifically the best choice for you: 

Let’s discuss the PC components that are essential to building your RX 6900 XT Gaming PC:

Ryzen 9 5900X + Radeon RX 6900 XT Build PC components

CPU – Ryzen 9 5900X Overview

SeriesAMD Ryzen 9 5900X
Item model numberAMD Ryzen 9 5900X
Item Weight2.8 ounces
Product Dimensions1.57 x 1.57 x 0.24 inches
Item Dimensions LxWxH1.57 x 1.57 x 0.24 inches
Processor BrandAMD
Processor Count12
Processor4.8 GHz ryzen_9

The AMD Ryzen 9 5900X marks a decades-long battle between Intel and AMD. The two chipmakers have consistently maintained or dominated a competitor in multi-core and single-core performance. Usually, AMD Ryzen 9 5900X contains 12 processor cores. The AMD Ryzen 9 5900X processor is based on 7nm process technology and Zen 3 architecture, whereas its base clock speed is 3.70 GHz, whereas the maximum clock speed mode is 4.80 GHz. 

The Zen 3 family of processors is available in the market, significantly improving the already impressive Zen 2 architecture. One of the best new processors is AMD’s Ryzen 9 5900X, which comes second behind Ryzen 9 5950X. This 12-core, 24-thread processor is named World’s Best Gaming Processor by AMD. The AMD Ryzen 9 5900X is a great processor for both gaming and any other workload.

With the Ryzen 9 5900X alongside other processors in the series, such as the AMD Ryzen 5800X, there is no reason left to buy an Intel processor for your next gaming PC. AMD not only delivers better performance across the board because Intel still does not implement PCIe 4.0 support, but AMD processors are also more feature-rich and more future-oriented.

CPU - Ryzen 9 5900X
9,858 Reviews
CPU - Ryzen 9 5900X
  • The world's best gaming desktop processor, with 12 cores and 24 processing threads
  • Can deliver elite 100-plus FPS performance in the world's most popular games
  • Cooler not included, high-performance cooler recommended. Max Temperature- 90°C
  • 4.8 GHz Max Boost, unlocked for overclocking, 70 MB of cache, DDR-3200 support
  • Amazing performance
  • New champion in single-core performance
  • Same power consumption as before
  • You don’t need a new motherboard
  • The price has gone up
  • No cooler included


To conclude, the AMD Ryzen 9 5900X is truly the best gaming processor in the world. The AMD Ryzen 9 5900X is an exceptional processor that comes with the largest single-core performance gains in recent years, making the processor more powerful in every way. This processor outperforms fantastic multithreading and single-threading performance while keeping temperatures and power consumption low.  In our opinion, the AMD Ryzen 9 5900X is the monster that beats every other processor on the market right now, except for the Ryzen 9 5950X. 

CPU Cooler – Noctua NH-U12A overview

Cpu Cooler Noctua Nh U12a Overview
Item model numberNH-U12A
Item Weight3.74 pounds
Product Dimensions6.69 x 8.46 x 6.5 inches
Item Dimensions LxWxH6.69 x 8.46 x 6.5 inches
Voltage12 Volts

After a long hiatus, Noctua has updated its NH-U12 tower cooler lineup with the unique 120mm NF-A12x25 PWM fans with SSO2 self-stabilizing hydrodynamic bearings. The Noctua NH-U12A model has become the fifth variation of the universal middle-segment cooler.

The physical capabilities of classic bundles of a radiator with heat pipes plus one or two fans have approached the limit of possibilities. The manufacturers have mainly shifted all research toward the design and integration of lighting systems. This is not the case with the new Noctua NH-U12A cooler.

Despite the trend towards 140mm fans and the accompanying increase in radiator dimensions for most competitors in the premium cooler segment, the NH-U12A uses two 120mm fans for the sake of high compatibility and relatively modest dimensions.

Noctua NH-U12A, Premium CPU Cooler
3,133 Reviews
Noctua NH-U12A, Premium CPU Cooler
  • 140mm class performance in 120mm size: 7 heatpipes, more surface area and a dual fan configuration with...
  • Excellent case, RAM and PCIe compatibility: Fits most tower cases (158mm height), doesn’t overhang the RAM...
  • Quiet, state-of-the-art NF-A12x25 120mm fans with Low-Noise Adaptors and PWM for automatic speed control: Full...
  • Includes high-end NT-H1 thermal paste and SecuFirm2 mounting system for easy installation on Intel LGA1700...
  • Fans with high-reliability bearings
  • A new single-core champion
  • Low noise and vibration
  • Quite good thermal paste included
  • Easy installation
  • Good performance
  • High-quality performance
  • 6-year warranty
  • Heavyweight
  • Expensive in price
  • Lack of RGB for the gamer crowd


To conclude, we didn’t find any of the best CPU Cooler features, just like Noctua NH-U12A. 

The Noctua NH-U12A cooler comes with a proprietary SecuFirm2 mounting kit, which ensures compatibility with all modern AMD and Intel sockets for desktop processors, including Intel HEDT processors for the LGA 2066; socket. With a small difference in price, many potential buyers will surely wonder which side to choose; a classic air cooler or an affordable maintenance-free liquid cooling system. In the case of the Noctua NH-U12A, the choice is not easy.

Motherboard – Asus ROG Crosshair VIII Hero (WiFi) Overview

Motherboard Asus Rog Crosshair Viii Hero Wifi Overview
Item Weight5.7 pounds
Product Dimensions14.57 x 12.28 x 4.25 inches
Item Dimensions LxWxH14.57 x 12.28 x 4.25 inches
Batteries1 Lithium Metal battery is required. (included)
Processor2133 MHz amd_ryzen_7
Memory Speed2133 MHz
Wireless Type802.11n, 802.11b, 802.11a, 802.11g

Today we return to the most sophisticated motherboards for the enthusiast, both for gamers and overclockers. After seeing the good performance offered by the new AMD Ryzen 7 and AMD Ryzen 9 processors, it is time to consider the Asus ROG Crosshair VIII Hero WiFi with a rugged design, a total of 16 power phases, and a BIOS that is one of the strongest on the market. 

One of the main characteristics that greatly influence the quality of a motherboard is its power supply for memory and especially processor voltage. Asus ROG Crosshair VIII Hero WiFi has no less than 16 power phases. Undoubtedly one of the great changes that the new generation of Ryzen 3000 has brought with it is that manufacturers have had to increase the power input of the boards drastically.

The nominal flagship of the ASUS series of motherboards using AMD X570 is still the ROG Crosshair VIII Formula. The motherboard Asus ROG Crosshair VIII Hero is made in the ATX form factor measures 305 × 244 mm and nine mounting holes for installation in the case.

AMD Ryzen also offers enthusiast motherboards because it comes in two versions with and without a WiFi module which is a perfect solution for everyone.

ASUS ROG X570 Crosshair VIII Hero (Wi-Fi) ATX Motherboard with PCIe 4.0, on-Board WiFi 6
1,456 Reviews
ASUS ROG X570 Crosshair VIII Hero (Wi-Fi) ATX Motherboard with PCIe 4.0, on-Board WiFi 6
  • AMD AM4 socket: ready for 2nd, and 3rd Gen AMD Ryzen processors and up to two M. 2 drives, USB 3. 2 Gen2, and...
  • Comprehensive thermal design: active PCH heatsink, M. 2 aluminum heatsink and ROG cooling zone.
  • High-performance networking: on-board Wi-Fi 6 (802. 11Ax) with MU-MIMO support, 2. 5 Gaps Ethernet and Gigabit...
  • 5-Way Optimization: automated system-wide tuning, providing overclocking and cooling profiles that are tailor...
  • support for AMD Ryzen 2nd and 3rd generation processors;
  • 12 USB ports;
  • Offers AX WiFi and also 2.5GbE LAN
  • integrated thermal design;
  • high-quality sound subsystem;
  • 5-way optimization function;
  • Gbps Ethernet + Gigabit Ethernet with ASUS LANGuard protection;
  • WiFi 6 (802.11ax) module with MU-MIMO support.
  • Very high price
  • Overkill for most
  • Chipset fan sits directly under the GPU


Overall, the Asus ROG Crosshair VIII Hero WiFi is a functional motherboard and a good choice for building computers based on the mid to high-end X570 chipset. The model has 12 USB ports, a high-speed 2.5G Ethernet network port, eight SATA ports, and a WiFi 6 (802.11ax) module with MU-MIMO support.  Of course, a big plus is the PCIe Gen 4.0 bus, which is supported by the X570 platform with the latest Ryzen 3000 processors. Note that the motherboard did not warm up in the VRM zone even under full load, facilitated by the complex thermal design that is active chipset heatsink, ROG cooling zone, and aluminum M.2 heatsink.

Memory – G.Skill Trident Z Neo 32GB overview

Memory G.skill Trident Z Neo 32gb
Slats height44 mm
Form factorDIMM
Guaranteed delays16-16-16-36 @ 3600 MHz
Capacity32 GB (2 x 16 GB)
Base voltage1.2v.

The manufacturer G.Skill has been producing highly successful memory sticks for many years. The Trident Z Neo line was specifically designed for Ryzen processors, although it worked on the Intel platform. In addition to the Trident Z rails available in different versions, G.Skill also produces the Flare X, Ripjaws, Forties, and SniperX ranges.

Trident Z Neo RGB modules are available in a variety of options and kits. We received two 16 GB modules in the kit for 32 GB with a frequency of 3.600 MHz. But kits from 16 to 256 GB are available with clock frequencies from 2.666 MHz to 3.800 MHz

The memory modules impress not only with their beautiful design but also their high-quality performance. For this reason, G.Skills remain popular. The heat spreader is divided into black and silver halves, with LED backlighting at the end. The height of the heatsink bars is 44mm, so it is wise to check the CPU cooler compatibility before purchasing. 

G.Skill Trident Z NEO Series 64GB (2 x 32GB) 288-Pin SDRAM DDR4-3600
278 Reviews
G.Skill Trident Z NEO Series 64GB (2 x 32GB) 288-Pin SDRAM DDR4-3600
  • Trident Z NEO Series, designed specifically for AMD Ryzen X570 and B550 Series; Intel Z390, Z490 and newer.
  • 64GB kit containing 2 x 32GB modules, DDR4-3600, 288-Pin, CAS Latency CL18 (18-22-22-42) at 1.35V
  • Brand: G.SKILL, Series: Trident Z NEO, Model: F4-3600C18D-64GTZN
  • ECC: No, Dual Channel Kit, Recommended Use: High Performance or Gaming Memory
  • Works at the stated frequency and even more.
  • Excellent acceleration potential.
  • Spectacular RGB illumination.
  • The guarantee is stated to be lifelong
  • High price
  • Pretty high radiators in 44m.


To conclude, G.Skill continues to delight enthusiasts with its products, and it is rightfully considered one of the best manufacturers of memory for overclocking. The reviewed memory kit F4-3600C16D-16GTZN of the new Trident Z Neo series boasts an updated design and good characteristics that are inaccessible to many competitors on the market. Any processor will unlock its great potential, be it Intel or AMD, although positioned for use on the AM4 platform with the third generation Ryzen.

Storage – 2TB Samsung 970 EVO Plus overview: 

Storage 2tb Samsung 970 Evo
Storage shock resistance1500 G
ControllerSamsung Phoenix
Form factorPCI-E
Volume2 TB
Read speed3300 MB
ConnectionPCI-E 3.0 x4
Maximum working temperature70 °C

Samsung’s mass-market drive is getting dangerously close to the Pro line, but now the Korean manufacturer has decided to add the new EVO Plus family. According to the specifications, we should get a performance increase of up to 53% compared to the 970 EVO; in terms of reading and writing, the drive is very close to the current third-generation PCI Express limits. 

Samsung has decided to update its popular 9×0 EVO lineup with state-of-the-art 3-bit MLC V-NAND memory and an updated Phoenix controller. Instead of the expected name change to 980, Samsung decided to add “Plus.” However, the Korean manufacturer did not miss the opportunity to show off their achievements. Compared to the popular 970 EVO family, up to 53% growth is promised, and the new Plus family will take the lead in performance until the fourth-generation PCIe standard

SAMSUNG 970 EVO Plus SSD 2TB - M.2 NVMe Interface Internal Solid State
51,955 Reviews
SAMSUNG 970 EVO Plus SSD 2TB - M.2 NVMe Interface Internal Solid State
  • Always Evolving SSD: The 970 EVO Plus is powered by the latest V-NAND technology and firmware optimization,...
  • Breakthrough Read/Write Speeds: The 970 EVO Plus reaches sequential read/write speeds up to 3,500/3,300 MB/s,...
  • Samsung Magician for Data Security: This software provides a suite of user-friendly tools that help you keep...
  • Superior Heat Dissipation: Samsung’s Dynamic Thermal Guard automatically monitors and maintains optimal...
  • Solid overall performance
  • Solid endurance
  • Five-year warranty
  • Write performance drop is mild compared to that of other TLC drives
  • Easy to use with lots of features
  • Low latency
  • Could use further efficiency optimization
  • Write performance drops in half once a small buffer is filled
  • Price premium


To conclude; the new Samsung SSD 970 Evo Plus M.2 NVMe Retail-Version 1TB has a new fifth-generation 96-layer TLC 3D V-NAND – replacing the old 64-layer in the 970 EVO line, because of the combination of the latest V technology -NAND and firmware optimizations, the 970 EVO Plus delivers 57% higher random write performance than the 970 EVO. Using SLC caching technology, this drive can deliver the exceeded speed of the 970 PRO performance and many of its counterparts from other manufacturers.

PC Case – Be quiet! Dark Base 700 overview

Pc Case Be Quiet Dark Base 700 Overview
Dimensions241 x 519 x 544 mm (W x W x D)
Weight13.25 kg
Max graphics card length286/430mm (w/o HDD cage)
Max cooler height180mm
Fan speed controller6x 4-pin, Step Controller, PWM hub
Motherboard supportE-ATX (30.5 x 27.5cm), ATX, M-ATX, Mini-ITX

The be quiet brand has been known since 2002, but the company began to deal with cases only three and a half years ago. Moreover, be quiet! Do not belong to the mass market; the manufacturer intends them for enthusiasts. All those who prefer the product’s compliance with the highest standards, which is read even in the announcements for each of the three series of cases currently being produced, then consider Be quiet! Dark Base 700 because it is declared as high-end, silent base premium, and pure base as essential. 

The color of the case is still one – completely black, but the presence of several color options for the other two representatives of the series suggests that other colors will appear for this model as well.

In terms of equipment, we note not too many external USB ports, which are partially offset by the presence of a Type-C connector. Some potential buyers may complain about the lack of 3.5- and 5.25-inch slots with access to the front panel: devices with such an installation have already become a rarity, but the need for them has not yet been reduced to zero.

The design of the Dark Base 700, like that of the other two cases in the series, is classically austere: flat surfaces with rounded corners and chamfered transitions, matte black exterior details. The design uses tinted glass for one of the sidewalls and different metals: steel for the second side, anodized aluminum trim on the front panel, and the top cover is entirely aluminum.

PC Case - Be quiet! Dark Base 700
698 Reviews
PC Case - Be quiet! Dark Base 700
  • Motherboard tray and HDD slots with enhanced possibilities for individual requirements
  • Two be quiet! Silent Wings 3 140mm PWM fans
  • 4-Step dual-rail fan controller is switchable between silence and performance mode
  • Ready for radiators up to 360mm
  • Excellent build quality
  • Reverse ATX capable
  • Built-in fan controller
  • Tempered glass side panel
  • LED lighting
  • USB 3.1 on the front I/O
  • Only two 140mm fans
  • Fingerprint magnet
  • A bit expensive
  • Not effective cable routing
  • Only three 3.5″ hard-drive cages


To conclude, it is difficult to argue with the position of the manufacturer regarding the be quiet! Dark Base 700 to the High-End category. As in the case with the older model, it is difficult to find fault with anything: both the design and construction are well thought out. We did not find any serious claims in terms of execution, and minor comments will be typed on any product.

More unpleasant is the impossibility of realizing in practice the potential for placing drives in the design: the declared maximum of 17 disks will require additional containers, but, as often happens, they are not seen in retail sales. The only consolation is that the nine available places for most of the possible configurations will be more than enough.

Power Supply – Corsair AX1000 80+ Titanium overview

Corsair Ax Series
Max. DC Output1000 W
Efficiency 80 PLUS Titanium
Total power1000 watts
Fan 135 mm
Operating Temperature0 °C – 50 °C
Dimensions152 mm (W) x 87 mm (H) x 172 mm (D)
Weight2.06 kg

Corsair has updated its flagship PSU series with two models, the AX850 and AX1000. New items should be perceived precisely as an extension of existing power supply units, although they have several differences from other products in the series. First of all, there is a noticeable lack of a USB interface to ensure compatibility with Corsair software. Another highlight is the collaboration with another manufacturing partner, Seasonic, on new models.

In appearance, the new items are also noticeably different from other models in the series, they look as useful as possible, and this suggests that we have products for a workstation rather than for gaming or home computers. 

Corsair unveiled an updated line of its high-end AX PSUs at CES 2019. A distinctive feature of the new AX is the increase in efficiency to 80 PLUS Titanium; otherwise, Corsair has decided to stick to the proven concept of its predecessor. The new “AX Series Titanium” line includes two 850W (CP-9020151-EU) and 1000W (CP-9020152-EU) models.

Power Supply - Corsair AX1000 80+ Titanium
95 Reviews
Power Supply - Corsair AX1000 80+ Titanium
  • 80+ Titanium Certified for the highest level of efficiency and performance
  • Zero RPM fan mode for near-silent operation at low to medium loads
  • World Class electrical performance for incredibly stable voltages and ultra-low ripple noise
  • 135mm cooling fan with true FDB Bearing delivers Low-Noise operation even at demanding loads
  • 80 PLUS Titanium efficiency
  • High performance
  • Silent operation
  • Fully modular
  • Topnotch build quality
  • 8x PCIe & 2x EPS connectors
  • Ten-year warranty
  • In-line caps feature of cables
  • EPS connectors unable to use 16AWG gauges
  • The short distance between peripheral connectors


To conclude, the Corsair AX1000 is the minimalist’s choice in design and appearance: no frills, bulbs, or bright colors, just black in the design. This PSU looks more like a practical work tool than a trendy product for gaming systems.  Corsair AX1000 belongs to the segment of premium solutions, but its premium is cost and consumer qualities, and performance, which is not always the case.

We are giving the Corsair AX1000 PSU this month’s Editorial Award for original design and near-excellent consumer qualities. The rest of the Corsair AX1000 features are switchable semi-passive fan controllers, fully modular cabling, and great equipment beyond expectations. 

Wrapping up

Ryzen 9 5900X + Radeon RX 6900 XT build a great choice for gamers and enjoy the best PC enthusiasts. Paired with the latest AMD Ryzen Vermeer series processors, the RX 6900 XT makes a great combination with Ryzen 9 5900X that provides the best user experience.

There are many CPUs from AMD and Intel that work well with the AMD Radeon RX 6900 XT. However, we must recommend the AMD range as the two components can better communicate with each other for better performance. So, if you want to build your customized PC, then the above suggestion is the perfect option for you because of the combination of Ryzen 9 5900X and Radeon RX 6900 XT components. 

About denis

Denis, aka "The PC Wizard", is a self-proclaimed computer whisperer. When he's not busy herding motherboards or taming rebellious RAM, he loves to write in-depth articles about PC components and building. He claims that the secret to his technical prowess lies in the number of caffeinated beverages he consumes daily. If you've ever wondered who to call when your computer throws a tantrum, look no further than Denis – our very own tech-sorcerer.

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