Radeon 5670 Power Supply Recommendations
The AMD ATI Radeon HD 5670 is a 3-D video card that operates in a PCI Express expansion card slot and supports the Microsoft DirectX 11 graphics standard. If you are considering upgrading an older computer with this video card, you may need to upgrade your computer's power supply as well to meet its power requirements.
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Power Supply Capacity
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The Radeon HD 5670 has the ability to operate on its own or in CrossFireX mode. CrossFireX allows you two use two video cards simultaneously for improved performance in games. If you have one Radeon HD 5670 installed, your computer's power supply should have a capacity of at least 400 watts. If you have two cards installed, your computer should have a power supply with a capacity of at least 500 watts.
Auxiliary Power Connector
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The Radeon HD 5670 does not require a six-pin auxiliary PCI Express power connector. Many PCI Express video cards require auxiliary power from the computer's power supply unit for stable operation. The Radeon HD 5670 draws all of its power through the PCI Express expansion card slot.
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AMD Certified Power Supplies
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AMD maintains a list of power supplies certified for operation with its products. When shopping for power supplies, you may notice a logo on the box if a product has the AMD certification. Alternatively, you can find a list of certified power supplies on the AMD website. Manufacturers of AMD-certified power supplies include Antec, Corsair, Enermax, Seasonic and Silverstone.
Other Considerations
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If your computer has many devices drawing power such as multiple processors or several extra hard drives, it draws a significant amount of power regardless of the addition of a new video card. It may be wise to treat AMD's power supply wattage requirements as bare minimums and purchase something with a higher maximum capacity. This ensures that your computer will remain stable when all components draw power simultaneously.
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