And my question is, will my PC and power supply support this card without a power supply or motherboard upgrade, and will I see a difference going to the GeForce 210 from the stock 6150LE (Im not a hardcore gamer)? I've done some research as well as used a power supply calculator (http://www.antec.outervision.com/) and it should work, but I need some confirmation. Thanks!
If you are not gaming, i think 210 is perfect for you. However, you could check GT 240 for some light gaming, because it's more powerful and it uses a 300W PSU as well. How many amps are there on the 12V rail? If it's 18 or more - the GT 240 is perfect, but it depends on the price and your needs.
And if I get the GeForce 210, how much would an overclock to 650 MHz core (from 589 MHz stock) and 700 MHz memory (from 500 MHz) shorten the lifespan of my card? For example, if I want this card to last at least 3 years, is this overclock still okay (with default cooling) or should I not overclock at all?
The Geforce 210 I linked to is an EVGA. They have a 2 year warranty on that card. Overclocking is within their warranty so if it fails you can return it to them. My guess is that it will not have a big change in lifespan but the fan speed may increase. i don't want to make you anxous but those cards are just trash. (sorry) The 4350 has bad performance too. See this link. http://www.hwcompare.com/graphics/compare.php?c=GeForce...
The $16 dollar Geforce 210 is a very good deal and you should grab it.
he can do better than that even with 300-watt psu.
I'd run the GT240 or the HD5670, I know the HD5670 calls for 400-watt system but it actually used less power than the GT240 which calls for 300-watt system..
Except for the fact that there are no sub-$35 HD5670's..which he seems to be looking for.