After building a computer up from scratch save for some ddr3 memory and the power supply, i discovered that my motherboard has two 8-pin ATX 12V (PW12-1 & PW12-2) power connections, for which i have only 1 cord for. Assuming that my power supply is inadequate as the computer flickers to life for approximately a millisecond before going silent, i am in the market for a new one. However i have limited experience in buying supply's and would value some input upon recommendations for my system.
HDD: Western Digital Caviar blue 640GB
http://www.amazon.com/Western-Digital-Caviar-Drive-WD6400AAKS/dp/B0017XUX7O
Case: Cooler Master CM 690 II System Cabinet - Mid-tower - Black
http://www.overstock.com/Electronics/Cooler-Master-CM-690-II-System-Cabinet-Mid-tower-Black/4589906/product.html?cid=202290&kid=9553000357392&track=pspla&adtype=pla&kw={keyword}
Motherboard:EVGA - Z68 FTW Desktop Motherboard - Intel - Socket H2 LGA-1155
http://www.bestbuy.com/site/EVGA+-+Z68+FTW+Desktop+Motherboard+-+Intel+-+Socket+H2+LGA-1155/4698796.p?id=1218509109236&skuId=4698796
Graphics card:Galaxy GeForce GTX 560
http://www.galaxytech.com/__en_gb__/Product13.aspx
CPU: Intel i7 2600
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115071&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-NA-_-NA
RAM: 4GB Dual Channel Corsair DDR3 Memory
http://www.amazon.com/Corsair-Channel-Memory-Processors-CMX4GX3M2A1600C9/dp/B002LE8D2A
HDD: Western Digital Caviar blue 640GB
http://www.amazon.com/Western-Digital-Caviar-Drive-WD6400AAKS/dp/B0017XUX7O
Case: Cooler Master CM 690 II System Cabinet - Mid-tower - Black
http://www.overstock.com/Electronics/Cooler-Master-CM-690-II-System-Cabinet-Mid-tower-Black/4589906/product.html?cid=202290&kid=9553000357392&track=pspla&adtype=pla&kw={keyword}
Motherboard:EVGA - Z68 FTW Desktop Motherboard - Intel - Socket H2 LGA-1155
http://www.bestbuy.com/site/EVGA+-+Z68+FTW+Desktop+Motherboard+-+Intel+-+Socket+H2+LGA-1155/4698796.p?id=1218509109236&skuId=4698796
Graphics card:Galaxy GeForce GTX 560
http://www.galaxytech.com/__en_gb__/Product13.aspx
CPU: Intel i7 2600
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115071&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-NA-_-NA
RAM: 4GB Dual Channel Corsair DDR3 Memory
http://www.amazon.com/Corsair-Channel-Memory-Processors-CMX4GX3M2A1600C9/dp/B002LE8D2A