ATI Radeon HD 4770 Video Card Overclocking Guide

The Test System

All testing was done on a fresh install of Windows
Vista Ultimate 64-bit with Service Pack 1 installed. All benchmarks
were completed on the desktop with no other software programs running.
All of the modules were run in triple-channel mode at 1866MHz. The ATI Radeon HD graphics cards were tested with 9.5 CATALYST
beta drivers. The ASUS P6T Deluxe V2 motherboard was run using BIOS
0302 with the processor running stock settings and the Corsair 6GB
memory kit was running at 1866MHz with 8-8-8-24 timings.

Here is the Intel LGA 1366 Test platform:

Intel Test Platform
Component	Brand/Model	Live Pricing
Processor	Intel Core i7 965	Click Here
Motherboard	ASUS P6T Deluxe V2	Click Here
Memory	6GB Corsair DDR3 1866MHz	Click Here
Video Card	Radeon HD 4870X2	Click Here
Hard Drive	Western Digital VelociRaptor	Click Here
Cooling	Intel Reference	Click Here
Power Supply	Cooler Master 1000W	Click Here
Chassis	Thermaltake Spedo Advance	Click Here
Operating System	Windows Vista Ultimate 64-Bit	Click Here

GPU-Z 0.3.3 Details the Card Tested:

ATI Radeon HD 4770: