Can you help me choose the best yet affordable PSU for my PC? I just upgraded my VGA from Sparkle 9400GT 1GB to Gigabyte GTX 560 Ti and I can observe a red light on my mobo. I have read that it has something to do with my PSU though i'm already aware that this kind of problem might arise soon.
Here's my specs
Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz
(4pcs) 2 GB DDR3-1333 DDR3
Western 320GB SATA HDD
Intel BLK DX58SO Motherboard
Gigabyte GeForce GTX 560 Ti
Samsung CDDVDW SH-S223C ATA Device
Gigabyte SUPERB 550W PSU
Is this good enough?
Thermaltake GRAND 80+ GOLD 750w - Power Supplies - Components
or I can have cheaper than that?
Is it also normal that my electric bill would increase because I changed my VGA?