Best PSU for AMD Ryzen 7 9800X3D and Intel Arc A750
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Intel Arc A750
Configuration Analysis
System Performance Assessment
This system, featuring a Ryzen 7 9800X3D and Arc A750, is capable of high-refresh-rate 1080p and solid 1440p gaming. The CPU provides excellent performance in CPU-intensive tasks, while the A750 offers competitive performance in modern titles, especially when optimized with appropriate drivers. Expect good multitasking capabilities and smooth overall system responsiveness.
Recommended Power Supplies

Thermaltake SMART 600W ATX 12V V2.3/EPS 12V 80 Plus Certified Active PFC Power Supply PS-SPD-0600NPCWUS-W

Apevia SPIRIT600W Spirit 600W ATX Power Supply with Auto-Thermally Controlled 120mm Fan, 115/230V Switch, All Protections
The Apevia 600W Gold is a solid, efficient choice for your Ryzen 7 and Arc A750 build, offering ample power and reliable protection.

Thermaltake Toughpower GX2 80+ Gold 600W SLI/Crossfire Ready Continuous Power ATX 12V V2.4/EPS V2.92 Non Modular Power Supply 5 Year Warranty PS-TPD-0600NNFAGU-2
The Thermaltake GX2 600W is a solid, efficient, and reliable Gold-rated PSU; perfect headroom for your Ryzen 7 and Arc A750 build.
Comparison Table
Model | Wattage | Efficiency | Form Factor | Modularity | Price | Best For |
---|---|---|---|---|---|---|
Thermaltake SMART 600W ATX 12V V2.3/EPS 12V 80 Plus Certified Active PFC Power Supply PS-SPD-0600NPCWUS-W | 600W | 80+ Gold | ATX | Non-Modular | $40.99 | Overall Value |
Apevia SPIRIT600W Spirit 600W ATX Power Supply with Auto-Thermally Controlled 120mm Fan, 115/230V Switch, All Protections | 600W | 80+ Gold | ATX | Non-Modular | $33.99 | Energy Efficiency |
Thermaltake Toughpower GX2 80+ Gold 600W SLI/Crossfire Ready Continuous Power ATX 12V V2.4/EPS V2.92 Non Modular Power Supply 5 Year Warranty PS-TPD-0600NNFAGU-2 | 600W | 80+ Gold | ATX | Non-Modular | $64.99 | Energy Efficiency |
Why This Wattage?
Power Calculation
The recommended PSU wattage is calculated based on the total power draw of your CPU (AMD Ryzen 7 9800X3D) and GPU (Intel Arc A750), plus approximately 100W for other components like motherboard, memory, and storage devices.
Extra Headroom
We add an additional 30% headroom to ensure optimal efficiency, handle power spikes, and allow for future upgrades. This ensures your system runs stable and your PSU operates in its optimal efficiency range.
Efficiency Standards
We recommend power supplies with 80 Plus certification, which represents higher energy efficiency and more reliable performance. Power supplies are most efficient at 50-60% load, so having adequate headroom is important.
Power Efficiency Tips
Enable AMD's Eco Mode in the BIOS to limit CPU power consumption during less demanding tasks.
Utilize Intel's driver settings to optimize power usage for the Arc A750 based on the specific game being played.
Consider undervolting the GPU slightly for improved efficiency with minimal performance impact; monitor stability carefully.
Special Installation Note
Ensure the 8-pin (or 6+2 pin) PCIe power connectors are securely plugged into the Arc A750, as it is essential for stable performance and avoids power delivery issues.
Usage Scenarios
1080p Gaming
Plays most modern games at 1080p with medium to high settings, leveraging the Ryzen 9800X3D's excellent gaming performance.
Content Creation
Handles video editing, photo editing, and some 3D modeling tasks smoothly, benefiting from the fast CPU and adequate GPU.
Productivity Powerhouse
Excellent for multitasking, running demanding applications, and handling large datasets with ease thanks to the powerful CPU.
Installation Tips
Position Properly
Most cases have a dedicated PSU bay at the bottom. Ensure the PSU fan is facing down if your case has bottom ventilation, allowing it to draw cool air from outside.
Cable Management
With modular PSUs, connect only the cables you need. Route cables behind the motherboard tray when possible for better airflow and cleaner appearance.
Proper Connections
Ensure all power connectors are fully seated and locked. The Intel Arc A750 will require dedicated PCIe power connectors from the PSU.
Test Before Completing
Before fully closing your case, connect the essential components and test that your system boots correctly with the new power supply.
The Thermaltake SMART 600W provides ample, 80+ certified power for your Ryzen 7 and Arc A750, keeping things running smoothly without breaking the bank.