I will use my pc for photo editing while surfing the net, office apps,watching HD videos and sometimes but not that often play games like Mass effect 2, Monday night madness, and Need for speed Hot Pursuit.
I will also Purchase:
For the AMD: ASUS M4A87TD/USB3 AMD 870 / SB850 DDR3
For the Intel: GIGABYTE GA-H55M-S2H HDMI/GLAN /DDR3
-2 GB Geil DDR3 1333mHz
-ATI HD 5570 1gb Graphics card
I plan to stick with the processor's stock fan if its good.
Can anyone help me decide between the 2 processors and suggest anything that might be better at the same budget. Can you please comment on their stock fans and the motherboards too.
I think an Athlon x 3 440 + 4GB RAM is better than a Phenom x4 with 2GB unless you are running XP 32bit even then its close. +1 for the 945 is better than i3 for most things but its up and down this link compares the 940 to the 540 http://www.anandtech.com/bench/Product/80?vs=143&i=2.3....
Just plug in your parts and calculate. Set Capacitor Aging to 20% if you plan on using the same PSU for a few years and it should give you a pretty safe wattage to shoot for.
It's not perfect, however, and there are some important pieces of information it doesn't list like how many amps you need on the 12v rail but it does a reasonably good job. My brands of choice are SeaSonic and Corsair (which are all pretty much re-branded SeaSonics).