Best PSU for Intel Core Ultra 9 285K and NVIDIA GeForce RTX 5070
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NVIDIA GeForce RTX 5070
Configuration Analysis
System Performance Assessment
This system offers excellent performance for gaming at high resolutions (1440p and 4K) and high refresh rates. The Intel Core Ultra 9 285K and RTX 5070 provide substantial processing power and graphical capabilities, allowing for smooth gameplay in demanding titles and efficient content creation workflows. Expect fast rendering times and seamless multitasking.
Recommended Power Supplies
MSI MAG A650BE Gaming Power Supply – 80 Plus Bronze Certified 650W – Semi-Modular – Low Noise ATX PSU
Segotep 650W 80 Plus Gold Certified Non-Modular ATX Power Supply with 6+2 Pin Connectors PFC Protection and RoHS Compliance, 120mm Silent Fan Gaming PSU GN-650 Black
The Segotep 650W Gold provides stable, efficient power for your Core Ultra 9 and RTX 5070, with enough headroom and essential protections.
MSI MAG A650GL Gaming Power Supply – Full Modular – 80 Plus Gold Certified 650W – Compact Size – ATX PSU
The MSI MAG A650GL's 80+ Gold efficiency and compact, modular design are perfect for the Ultra 9 and RTX 5070, keeping things tidy.
Comparison Table
| Model | Wattage | Efficiency | Form Factor | Modularity | Price | Best For |
|---|---|---|---|---|---|---|
| MSI MAG A650BE Gaming Power Supply – 80 Plus Bronze Certified 650W – Semi-Modular – Low Noise ATX PSU | 650W | 80+ Gold | ATX | Non-Modular | $59.99 | Overall Value |
| Segotep 650W 80 Plus Gold Certified Non-Modular ATX Power Supply with 6+2 Pin Connectors PFC Protection and RoHS Compliance, 120mm Silent Fan Gaming PSU GN-650 Black | 650W | 80+ Gold | ATX | Non-Modular | $54.99 | Energy Efficiency |
| MSI MAG A650GL Gaming Power Supply – Full Modular – 80 Plus Gold Certified 650W – Compact Size – ATX PSU | 650W | 80+ Gold | ATX | Full-Modular | $79.99 | Energy Efficiency |
Why This Wattage?
Power Calculation
The recommended PSU wattage is calculated based on the total power draw of your CPU (Intel Core Ultra 9 285K) and GPU (NVIDIA GeForce RTX 5070), 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 NVIDIA's DLSS (Deep Learning Super Sampling) in supported games to boost frame rates without significant visual quality loss, reducing GPU load.
Utilize Intel's integrated graphics (if available and enabled) for less demanding tasks like browsing to conserve dedicated GPU power.
Monitor CPU and GPU temperatures. Ensure adequate cooling to prevent thermal throttling, which can reduce performance and increase power consumption.
Special Installation Note
Ensure the 8-pin (or 4+4 pin) EPS connector from the PSU is securely connected to the motherboard's CPU power socket. The Ultra 9 285K can draw significant power under load, so a stable connection is crucial.
Usage Scenarios
AAA Gaming
The system can play the latest AAA games at high or ultra settings with smooth framerates at 1440p or even 4K resolution.
Video Editing
Handles 4K video editing and rendering smoothly, allowing for complex effects and quick export times using GPU acceleration.
AI Development
Ideal for developing and training AI models, particularly those that benefit from GPU acceleration, like image recognition or natural language processing.
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 NVIDIA GeForce RTX 5070 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 MSI MAG A650BE provides ample power for your Ultra 9 and RTX 5070, and it's a reliable, efficient choice for keeping your system running smoothly.