PSU outputs x-watts, the GPU needs x-watts, but guess what, the whole PC needs x-watts on top of what the GPU needs. Also, if you didn't know the PSU maybe rated for x-watts but THAT isn't a constant output but "peak output" demands. Also, the typical rating should be more in line with 75% of the rating and that should be used to suggest what the PSU really outputs and hopefully at a stable level. Alas, heat WILL!!! degrade that output and drop depending on the quality and power scheme of the PSU. Thus, it usually pays to buy a PSU that is at least 100W over what is required, be single rail and QUALITY build, likely from a known name brand. Bigger is better and best cooling is also a must not only in the PSU itself, but the case as well(airflow).
Use the PSU calculator at some website, add 100W; check that out.
Recently I bought a new graphics card: GTX 960. I optimized the game settings and installed the newest drivers. But now I'm getting strange graphic glitches mainly in games (CS:GO, BF4) but sometimes in the browser too. The glitches happen on the edges of objects, ONLY when I move in the game. They are blue,green,red,yellow scattered points showing up only for the time im in movement and only on the edges. Also, I can't screenshot it, cause they dont show up on screenshots. I tried changing the HDMi cable, nothing. I was thinking, can it be related to the power supply not being able to give enough power to the card? There's a 50W difference between the total power of the PSU and the power need for the video card.
Do you know anything that I could do to fix it? Thank you in advance
i5 4440 3.1ghz
Win 7 64 bit
8 gb ram
Nvidia GTX 960
motherboard: Asus H97 M
Also a soundcard