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AMD recommends a 450 W minimum power supply for a PC with a Radeon RX 570, but that is a baseline—not a calculation for every build. AMD lists the card itself at 150 W typical desktop board power. To judge your own PC, calculate the wattage requirement for all installed components, compare it with the PSU’s rated output, and check the exact card’s power connector.
RX 570 wattage: the GPU figure versus the PSU recommendation
AMD’s Radeon RX 570 specifications list 150 W typical desktop board power and a 450 W minimum PSU recommendation. These numbers describe different things: 150 W is the graphics card’s typical board power; 450 W is AMD’s suggested minimum capacity for the power supply in a PC using the card. The 150 W figure is not the wattage of the entire computer or the PSU size to buy.
Partner cards can have different published power figures. For example, MSI specifies 150 W for its RX 570 ARMOR 4G OC and 120 W for its RX 570 GAMING 4G. MSI lists a 450 W recommended PSU and one 8-pin power connector for each of those models. Use the specification for your exact card rather than assuming every RX 570 is identical.
How to calculate the wattage for your PC
- Identify the exact RX 570 model. Check the card’s product page or label for its power consumption and auxiliary PCIe power connector. The GPU’s specifications alone do not describe the rest of your computer.
- List every installed component. Include the CPU and all other parts in the system, not just the graphics card. The parts list matters because the wattage requirement is for the complete PC.
- Estimate the complete system’s requirement. Enter those components into a PSU or wattage calculator. AMD’s PSU troubleshooting guidance recommends calculating the total wattage requirement of installed components and comparing it with the PSU’s rated output.
- Check the PSU label and cabling. Find its rated output on the unit’s label, and verify that it has the matching cable for your exact card. Do not assume an adapter or connector listed for another RX 570 variant is suitable.
- Compare the figures in context. Use AMD’s 450 W minimum recommendation as an RX 570 baseline, then assess the PSU against the calculator’s whole-system estimate and your exact card’s specification. The available manufacturer figures do not establish one universal headroom formula or a precise PSU requirement for a build whose other components are unknown.
Will a 450 W PSU be enough?
It may be appropriate when the complete system’s calculated requirement and the exact card’s connector needs are met, but the 450 W recommendation alone cannot confirm that a particular PSU will work in every PC. The number is a manufacturer recommendation, not a guarantee for any unit labelled 450 W. A faulty PSU may also fail to deliver its specified wattage, as AMD notes in its troubleshooting guidance.
Recommended Free Tools
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#1 Best Overall
Fuhengli Computer PC Power Supply Tester
- [8-in-1 ATX Power Supply Tester] -- Support test 20-pin ATX / 24-pin ATX / HDD (IDE) / Floppy 4-pin / PCI-e 6-pin / 4-pin / EPS 8-pin (NOTE: can not fit for PCI-e 8-pin) / SATA connectors
- [Aluminum Alloy Enclosure] -- Light and Easy to Carry, High Strength, Nice Thermal Conductivity & Corrosion Resistance
- [1.8'' LCD Screen] -- Outputted Voltages shows on the 1.8'' LCD Screen, Easy to Read ( The 1.8'' LCD Screen was Powered by 20-pin / 24-pin Connector ), Note: The Product Screen Has a Load of Scratches All Over It？Because The Screen is Easy to Scratch, We Put a Protective Film on It, If You Think It's Not Beautiful, You Can Tear It Off by Yourself
- [Beep Alarm] -- When your power supply test value is beyond normal range, the Power Supply Tester would issue a buzzer alarm, Easy to Know
- NOTE: The voltage of 20pin / 24pin connectors is displayed by the LCD Screen, as "+3.3V", "+12V1", "+5V", "-12V", "5VSB", "PG" (except "+12V2" on LCD Screen); The voltage of PCI-e 6P / 4P / EPS P8 connectors is displayed by the LCD Screen as "+12V2"
These published figures are manufacturer specifications, not measurements of your computer under load. Without the CPU and the rest of the parts list, there is no defensible way to calculate one exact whole-PC wattage for your build.
What to check if the PC has power problems
AMD identifies boot failure, random crashes, hangs, reboots, and display corruption as possible PSU-related symptoms. They are clues, not proof that the power supply is the cause. Check the PSU’s rating and condition, the card’s required connector, and the rest of the system before attributing a problem to wattage alone.
Quick Recap
Bestseller No. 1
Bestseller No. 2
Best Value
Computer PC Power Supply Tester, ATX Power Supply Host Inspection Maintenance Tool, PSU Tester, Detect with 20/24 Pin LCD Display for ATX,BTX,ITX,TFX.
- INTELLIGENT LCD PARAMETER DISPLAY: The ATX power supply test and repair tool is equipped with a smart LCD screen that displays key parameters such as +12V, -12V, +5V, -5V, +3.3V, and SB and PG signals in real-time and intuitively, providing users with comprehensive and clear power supply status information.
- REAL-TIME FAULT INTELLIGENT ALARM: With a built-in intelligent monitoring system, the power supply tester immediately triggers a buzzer to emit a warning sound and flashes the abnormal parameters on the LCD screen when voltage parameters are detected outside the normal range. This ensures that users can quickly detect and deal with power supply issues to prevent potential hardware damage.
- COMPREHENSIVE TESTING SUPPORT FOR MULTIPLE INTERFACES: The power supply tester supporting a variety of power supply interfaces including 20Pin, 24Pin ATX, SATA, 4Pin, 8Pin connectors, PCI-E graphics card 6Pin connectors, as well as floppy drive and multiple power supply interfaces, it covers the mainstream power supply interface types on the market, ensuring users can test power supplies of various models.
- PRECISE VOLTAGE MEASUREMENT CAPABILITY: The power supply tester can measure voltage with a high precision of 0.01V, helping users accurately determine whether the power supply output is stable and if there are issues with voltage being too high or too low, providing protection for the stability of the power supply and the safety of computer hardware.
- PORTABILITY AND EASE OF USE: Designed to be lightweight and portable with an intuitive operation, it allows for quick power supply testing without the need for professional skills, making it ideal for computer repair personnel and everyday users. Whether for detecting power supply faults or routine maintenance, it greatly enhances efficiency and convenience.
Rank #4
ATX Power Supply Tester, 20/24 4/6/8 Pin Computer Host Inspection and Maintenance Tester Tool, with Buzzer and LCD Display, for ATX, ITX, BTX, PCI E, SATA, HDD
- LCD DISPLAY: LCD liquid crystal display, the output voltage is clear at a . If there is any defect, the buzzer will automatically alarm.
- VOLTAGE DISPLAY: It can also measure the output wire P4/P6/P8/SATA/IDE, and the external DIE/SATA/P6/P8 is the light display, there is no LCD voltage. There is LCD voltage display only when connecting to the 24pin or 20pin.
- MINI and PRACTICAL: Now the number of power output groups is increasing. As long as one of them has problem, the hardware of the computer system may work abnormally or even burn out. To measure whether the output voltage output of the power supply is stable, the player usually uses a multimeter. But for the average user is still a little troublesome.
- ATX POWER SUPPLY TESTER: We have developed a portable computer power tester for the power supply market that cannot judge the quality of the power supply. It has LCD intuitive and accurate display voltage (+/-0.01V), automatic fault alarm, complete test interface, small and beautiful appearance, and more test functions. It is your best choice and helper to quickly detect PC power.
- WIDE APPLICATION: ATX Power Tester is a powerful power test device that can detect ATX, BTX, ITX, TFX computer power supplies, and can display various groups of voltage and PG values in the LCD screen, and quickly detect computer power supply to facilitate the instrument.
Rank #3
Thermaltake Dr. Power III Pro; ATX Power Supply Tester; Voltage/Continuity/PG; up to ATX12V v3.1 spec; 24pin Main Board/12V-2X6/ 4+4 EPS/6+2 PCIe/SATA/Molex; Color Display; Black; AC-083-OO1NAN-A1
- 【Right Tool for the Job】A great addition to any tool kit for someone working on a PC. The Dr. Power III Pro can check a connection for continuity, provide real-time voltage and PG readings, and alert for detected faults with audible and display alerts.
- 【Real-Time Data】Capable of delivering real-time data for +12V, +5V, +3.3V, and +5Vsb outputs as well as providing a PG (power good) signal measured in ms (milliseconds) for help identifying issues with power supplies.
- 【PCIe Gen 5.1 Sense】Able to detect the the sideband SENSE0/SENSE1 signals for the correct identification of power able to be delivered (150W, 300W, 450W, 600W) to a modern GPU.
- 【Fault Warnings】 Easily identify issues thanks to the active alert system, able to alert the user with both an audible beep to draw attention along with the display turning red and indicating where the fault was detected.
- 【Color Display】On top of being updated to test the newest ATX 3.1 v3.1 spec PSUs, the Dr. Power III Pro also brings a color screens for some extra eye grabbing notifications.
Rank #2
Comidox 1Pcs 20/24 Pin LCD Computer PC Power Supply Tester for ATX BTX ITX TFX SATA with Buzzer Automatic Alarm
- The LCD power tester is a powerful power test device. This power tester only needs to be connected to the ATX connector of the power supply to easily and intuitively know whether the output of each power supply is normal. It can detect ATX, BTX, ITX, TFX computer power supply, and can display various voltage and PG values in liquid crystal to quickly detect the performance of computer power supply.
- The LCD displays various parameters such as output voltage and PG. When each parameter exceeds the normal value, the buzzer will sound a warning and the corresponding value will flash.
- It can measure the voltage of each group of power supply 3.3V/+5V/+12V/-12V/SB+5V/PG, and also measure the output wire P4/P6/P8/SATA/IDE, external DIE/SATA/P6/P8 is the light Displayed, there is no LCD voltage. Only the 24pin or 20pin will have the LCD voltage.
- It has LCD intuitive and accurate display voltage (+/-0.01V), automatic fault alarm, complete test interface, small and beautiful appearance, and many test functions. It is the best choice for quickly detecting PC power.
- Support 20Pin, 24Pin ATX interface / SATA interface / 4Pin, 8Pin interface / PCI-E graphics card 6Pin interface / floppy drive interface / ATE hard disk interface.
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