Power Supply Requirements - Radeon HD 4800 CrossFire User Manual

Power Supply Requirements

2.4
HD4850
Power supplies with 500-Watt capacity and 30A current on 12V rail is
recommended for single ATI Radeon™ HD 4850 series product.
ATI Radeon™ HD 4850 CrossFire configurations (dual graphics card
system) requires 550-Watt capacity power supply, with 38A on 12V rail.
CrossFire™ requires a power supply with two 6-pin Express® power
connectors.
HD4870
Power supplies with 550-Watt capacity, 30A current on 12V rail and two
6-pin PCI Express® power connectors is recommended for single ATI
Radeon™ HD 4870 series product.
ATI Radeon™ HD 4870 series CrossFire configuration (dual graphics
card system) requires 600-Watt capacity power supply with 38A on 12V
rail. CrossFire™ requires a power supply with four 6-pin PCI Express®
power connectors.
HD4870X2
Power supplies with 600-Watt capacity, 30A current on 12V rail and one
6-pin and one 8-pin PCI Express® power connectors is recommended for
single ATI Radeon™ HD 4870X2 Series product.
ATI Radeon™ HD 4870X2 series CrossFire configuration (dual graphics
card system) requires 900-Watt capacity power supply with 38A on 12V
rail. CrossFire™ requires a power supply with two 6-pin and two 8-pin
PCI Express® power connectors.
Chapter 2: Hardware Installation
15