Gigabyte Socket AM3/AMD 890GX/SATA3&USB3.0/A&V&GbE/ATX Motherboard GA-890GPA-UD3H
Asus Internal SATA 8x Blu-ray Combo BC-08B1LT
Thermaltake - 600W TR2 ATX Power Supply
OCZ OCZ3G1333LV6GK DDR3 PC3-10666 1333 MHz 6GB Gold XTC Triple Channel Kits
Phenom II X4 965 Black AM3 3.4Ghz 512KB 45NM 125W 4000MHZ
Sapphire Radeon HD 6850 1 GB GDDR5 VGA/DL-DVI-I/SL-DVI-D/HDMI/Display Port PCI-Express Video Card 100315L
Western Digital 1 TB Caviar Green SATA Intellipower 64 MB Cache Bulk/OEM Desktop Hard Drive WD10EARS


I've tested system using Prime95 torture testing and had no errors. I ran Memtest for 10 hours and had 0 errors. We've replaced the graphics card from a 5800 series to the new 6850. We also replaced the power supply with the 600 watt Thermaltake from a 500 watt. I don't know what else it can be...only happens during games. Of course we have the latest ATI drivers and all windows updates. I've also removed the stock thermal paste and replaced with Arctic Silver 5.