Hello, i was thinking of building a gaming pc but I wanted to choose a PSU. Thhis was very confusing or me asI did not know how much Watt should I get, ten I sae the PSU calculator I tested everything I had and I got a 269W of total Watt and the recommended was 319W, now on amazon I can choose for a 450W PSU or a 500W. I really want to know if I can have a 450W PSU, will it affect my mobo or my processor or my graphics card. Please someone answer me fast. The screen shot is given below.