Hi, i would like some help with figuring out the compatibility of some components. Currently i have an ACER Aspire TC-605 with the part number DT.SRQST.039 . I'm planning on upgrading it with a new video card, new random access memory and a new power supply. The video card i was looking at was a Nvidia GTX 950 2gb. The RAM i was looking at is the Crucial Ballistix Sport 4GB Single DDR3. And i also would like help with the power supply wattage. Please reply if you know anything about this, i know its a big request but i'd really appreciate the help.