CPU : AMD Phenome(tm) II X4 965 Processor 3.40 GHz
RAM : 8.00 GB
GPU : MSI N570GTX 1280MB GDDR5 , EVGA GTX 560 1024MB GDDR5 .
Main : MSI 990FXA-Gd65
Power : COOLER MASTER SILENT PRO Gold 1200W .
Driver version : 301.42
1 - Can we use the maximum force of GPU using this system ?
2 - Why one of the GPU becomes failed ?

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http://cend.site11.com/photos/94bb65ef46d3.jpg