ATI Radeon™ HD 4850 System Requirements

* PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
* 450 Watt or greater power supply with 75 Watt 6-pin PCI Express® power connector recommended (550 Watt and two 6-pin connectors for ATI CrossFireX™ technology in dual mode)
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* Minimum 1GB of system memory
* Installation software requires CD-ROM drive
* DVD playback requires DVD drive
* Blu-rayâ„¢ playback requires Blu-ray drive
* For a complete ATI CrossFireXâ„¢ system, a second ATI Radeonâ„¢ HD 4850 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (included) are required

ATI Radeon™ HD 4870 System Requirements

* PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
* 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* Minimum 1GB of system memory
* Installation software requires CD-ROM drive
* DVD playback requires DVD drive
* Blu-rayâ„¢ playback requires Blu-ray drive
* For a complete ATI CrossFireXâ„¢ system, a second ATI Radeonâ„¢ HD 4870 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (included) are required

ATI Radeon™ HD 4890 System Requirements

* PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
* 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended (600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode)
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* Minimum 1GB of system memory
* Installation software requires CD-ROM drive
* DVD playback requires DVD drive
* Blu-ray™ playback requires Blu-ray drive
* For a complete ATI CrossFireX™ system, a second ATI Radeon™ HD 4890 graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable per graphics card (included) are required

ATI Radeon™ HD 4600 System Requirements

* PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
* 400 Watt or greater power supply (550 Watt for ATI CrossFireXâ„¢ technology in dual mode) is recommended
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* 1GB of system memory recommended
* Installation software requires CD-ROM drive
* DVD playback requires DVD drive
* Blu-rayâ„¢ playback requires Blu-ray drive and full 1080p display requires a 1080p-capable monitor
* To enable dual mode ATI CrossFireXâ„¢ technology, a second ATI Radeonâ„¢ HD 4600 Series graphics card, an ATI CrossFireX Ready motherboard and one ATI CrossFireX Bridge Interconnect cable (included) is required.


ATI Radeon™ HD 4550 System Requirements


* PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
* 300 Watt or greater power supply (350 Watt for ATI CrossFireXâ„¢ technology in dual mode) is recommended
* Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
* 1GB of system memory recommended
* Installation software requires CD-ROM drive
* Blu-rayâ„¢ playback requires Blu-ray drive and full 1080p display requires a 1080p-capable monitor
* For Microsoft DirectX® 10.1 support, Windows Vista® Service Pack 1 is required
* To enable dual mode ATI CrossFireXâ„¢ technology, a second ATI Radeonâ„¢ HD 4550 Series graphics card, and an ATI CrossFireX Ready motherboard are required


ATI Radeon™ HD 4350 System Requirements

# PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard
# 300 Watt or greater power supply (350 Watt for ATI CrossFireXâ„¢ technology in dual mode) is recommended
# Certified power supplies are recommended. Refer to http://ati.amd.com/certifiedPSU for a list of Certified products
# 1GB of system memory recommended
# Installation software requires CD-ROM drive
# DVD playback requires DVD drive
# Blu-rayâ„¢ playback requires Blu-ray drive and full 1080p display requires a 1080p-capable monitor
# For Microsoft DirectX® 10.1 support, Windows Vista® Service Pack 1 is required
# To enable dual mode ATI CrossFireXâ„¢ technology, a second ATI Radeonâ„¢ HD 4350 Series graphics card, and an ATI CrossFireX Ready motherboard are required

Latest Driver
ATi CCC 9.4 : http://game.amd.com/us-en/drivers_catalyst.aspx

Overclocking and Stability

Furmark :http://www.ozone3d.net/benchmarks/fur/

Gainward ExPERToolhttp://www.gainward.de/support/XPRT_ATI_v4.rar

3DMark Vantage :http://www.futuremark.com/download/3dmarkvantage

GPUZ :http://www.techpowerup.com/gpuz/