Mobo + chip: GIGABYTE GA-Z87X-D3H + i7-4670k combo ($360, newegg)
Not a big fan of gigabyte on the fan control, but if its a combo only with gigabyte... then its up to you. I prefer ASUS for FanXpert2, or MSI but here is up to you.
Graphics: EVGA GTX770 ACX ($400 with rebate, get a free game)
Check CA_Steve thread of reviews for GTX760, GTX 760 review compilation
, the reviews of the MSI are really good, i would go with MSI Gaming N760 TF 4GD5/OC GeForce GTX 760 4GB 256-bit GDDR5 PCI Express 3.0 SLI Support Video Card
or if you really want a GTX770, MSI Gaming N770 TF 2GD5/OC GeForce GTX 770 2GB 256-bit GDDR5 PCI Express 3.0 SLI Support Video Card
RAM: Corsair Vengeance low profile DDR3 1600 2 x 4GB ($75)
Whatever is approved by the mobotherboard manufacturer should be good.
HD: Western Digital RED 2TBx2 in Raid 1 ($210)
Raid is only an uptime tool, not a true backup, personally im against having much mechanical hdds inside a PC (unless its a storage server), what i would go is go with 1 mechancial for storage and get a external USB3 hdd to do backups. Now a days there are very small just powered by usb3 slot, like WD My Passport 2TB Portable External USB 3.0 Hard Drive Storage Black (WDBY8L0020BBK-NESN)
. Now on what hdd, i would go with what SPCR has tested, Western Digital Red 3TB & 1TB Hard Drives
, no test on 2tb to know if its like 3tb... there are mulitple tests on WD Greens though, although there has been refreshes over the years, so idk either, but WD green before the red, seem to be the favorite among people looking for the quietest mechanical hdds.
Heatsink (updated): Noctua NH-U12S ($70)
For the price, i like more Thermalright HR-02 Macho
$55 free shipping, and was tested by SPCR, Thermalright HR-02 Macho Quiet/Fanless Cooler
, the included fan is decent at 700rpm, but will depend on the motherboard to able to drop it down.
PSU (updated): SeaSonic X650 80 PLUS GOLD full modular ($120)
I own a X660 and been perfect for two years now, no issues at all. This model seems to be always cheaper at newegg, never known why, but its been sold for a long time with good user reviews. As an alternative, a little bit more expensive, KingWin Lazer Platinum Series LZP-550
, tested by SPCR, Kingwin Lazer Platinum 550W Power Supply
I've overspecified the PSU to reduce fan noise from it. I don't believe 16GB will make sense for her since she doesn't run, e.g., Photoshop on large images.
Seasonic and Kingwin PSU usually turn their fan based on temperature, they are hybrid psu in terms of passive until certain temp, not power draw, you setup should never even come close to 500W, so its up to you, i would prefer a platinium for the eficiency, but gold is great also.
I'm aware that the SSD is a single point of failure. I looked a bit into getting a SSD cache drive instead, but everything I read implied that I can't use a SSD cache drive to cache a Raid-1 configuration.
The SSD probably will outlive all your mechancial hdds unless heavy writing is done to it, i have used ssd for more than 5 years now, not a single failure, while i had a lot of hdds failures over that time.