Both motherboards, the old one and the revised one, don't support 2000 MHz RAM without overclocking, and I don't know if they will even overclock. The RAM web page has the MHz unlabeled in parenthesis (2000). I'd recommend to go for maybe 1333 MHz RAM, although I did list some speeds in my previous post. I think the motherboard would downclock? the RAM to the maximum allowed settings, but I'm not entirely sure on this. It would probably be better to get some slower RAM, which would be a bit cheaper too.
The Gigabyte motherboard from before was probably fine actually.
The CPU is fine for both motherboards.
The cooler is still not LGA 1156 compatible, and it doesn't say in the description if it was. Like I said before, you can just simply go for the stock cooler the processor comes with, since the Core i3s seem to run fine with them, unless you're overclocking.
The PSU from before would be fine with the graphics card you chose, unless you want to make room for any future upgrades. As for brand of choice, I've had pretty good experiences with Corsair, OCZ, Antec, and Thermaltake. You can maybe find some reviews somewhere on that power supply as to whether or not it's reliable. 80 plus certification seems to be pretty popular as well.
Ignore this and go for the EDIT: The graphics card would be fine for some older games, but if you want to play any newer games at decent/playable settings, it may be in your best interest to invest more in this area. I don't know what games you might plan to play though. If you decide to up on the graphics card, the PSU you have chosen in the revised list will likely cover it.
Here's a list of cards in order of performance. You may want to look up "benchmarks" of those cards. Just google benchmarks and the model of the card. A card like the 5670 would be decent for most games, maybe medium and 1280x800 resolution for some newer games? They wouldn't require too much power and the Corsair 450 watt PSU would go fine with this. As the numbers go up in the 5000 series, the better it is. So the 54/5500 series are more their low end, and the 5600 and maybe the (lower?) 5700 series would be more like their mid range cards.
EDIT: Just read your post and it said Minecraft. Then the card is fine. Just go for the 450 watt power supply if you're not planning to upgrade later.
Just remembered, you forgot to add a case. Personally... I favor Coolermaster cases... But I wouldn't have too much experience in this or choosing other brands. Don't forget to give yourself room for your monitor
