trl288 wrote:
...Feel free to rip that build to shreds! Thanks!
You asked for it

But I'll be nice kinda sorta maybe
- Swap that windowed gamer case for something more appropriate. I think your relative might not appreciate the light show from inside that case in which you allotted $100 of your $600 budget. So I am certain you can find something more conservative and cheaper. A lot of newer cases have washable dust filters of some sort in front - this obviously won't solve pet hair and massive dust build up, but it can help.
- I considered, but ultimately went against, a cheaper Core i3 CPU, because moving up to the i5 does a few cool things:
1) Intel HD 4000 on-board graphics that I read is actually useful and probably perfect for your build
2) With no need for a GPU, the extra cost of the i5 over the i3 makes financial sense
3) The i5 is at least 20% faster than the i3, so your family will get more out of it for a longer time
- While the ASUS mobo is a solid choice, I suggest considering saving $30 and getting the budget ASRock mobo because of limited budget
- For your purposes, RAM is RAM. Get cheap but decent RAM.
- A 2 TB HDD is only marginally more expensive than a 1 TB HDD. Spend the money where it counts.
- Your Power PC PSU is solid, but consider a smaller PSU (especially since there is no GPU) that is on sale!
- No monitor / kb / mouse / speakers / etc?
So here is the resulting build:
http://pcpartpicker.com/p/i4UTSo whoever is next, feel free to rip it to shreds

EDIT: I forgot about an SSD. Imho don't give them one. That may sound cruel, but first, it's hard to justify allotting about $60-80 (at least 10% of your total budget) for a boot drive to save maybe 30 seconds a day for the casual user. Second, if you include an SSD, what will the consequences be? Will your relatives use it appropriately or will they end up needlessly filling it up and complaining to you about whatever resulting issues?