Voltage Sag

In all levels of the house the lights will flicker sporadically. sometimes the flickering will be very brief, other times it will go on for minutes. The circuit in my room seems to act up more often. Attempting to artificially produce this behavior via adding/removing electrical appliances does...

The model number is: p6687c 8.00 GB 64-bit operating system. Will this product work with it? http://www.newegg.com/Product/Product.aspx?Item=N82E16814127842&cm_re=GTA960-_-14-127-842-_-Product It's a, MSI GTX 960 2GD5 GeForce GTX 960 2GB 128-Bit GDDR5 HDCP Ready SLI Support ATX Video Card...