As far as I know, she does visualizations of interior design mostly, not so much huge buildings. She does some houses as well, but I guess normal family size house doesnt count as a "huge models"
I was told R9 280x would get the job done as well (I'd simply give her my R9 280x and buy myself something better), but I really don't know how much the GPU makes a difference when rendering. She also expressed the wish, she'd like the colors on screen to match the colors "on paper". (I assume this has more to do with LCD screen itself, than gpu card).
Regarding SSD, I was thinking of getting her SSD of 256GB, for installing all of her software she uses for rendering, and HDD for storing the projects. For now I'll just stay on 256 one, if she needs more, she can buy another eventually.
Definitely getting either Noctua D15 or evo 212 (they say it's damn good cooler). Water cooling is just too expensive, I'd rather spend money on more powerful components.
Would you have any CPU in mind (possibly XEON) in 300-400€ price range, that would be good for these tasks? (better than i7 4790k)
The CPU you mentioned (E5-2620v3) costs 459€ (514 USD), so it's a bit above my budget. I was thinking more inside the 300-400€ range.
Also, why should I stay away from Z chipset? I chose Z chipset so I could overclock the i7 if needed. (Of course, if I choose to buy i7 4790k that is)[/quote]
I'm glad to help
Last year I had to revert to a 4 core (920) for a couple of months because I fried the xeon 5690 (overclocking and a pump malfunction). It was horrible, so I've got a bit of a thing about 4 cores and design now
So I would go for the 5820. It's a great chip and the X99 mobo gives her the choice of a decent upgrade if she wants it later.
256GB SSD is ok as long as she's a bit disciplined about file management.
I have the Dell U3415W screen and the color is really good. About the best I can get without shelling out big bucks on a pro screen and all the reviews say that too.
It has backlight bleed at the corners but I can only see it if I watch a movie at night and am looking for it.
Real estate is quite important for design to fit all the tools beside the model so 3440x1440 is perfect.
My other computer has a Dell 27 high res and a crappy 24" for the tools and that's ok too.
Actually for interior design the screen would be the number one priority before rendering speed.
Remember when we're talking 4 cores vs 12 cores the reality is a 7 minute render vs a 5 minute render. Render anything bigger and you have to go for a walk with either chip.
To be able to see how colors go together and see them as they would be in reality is really crucial.
If you have any money left over a nice gaming mouse is good - a few macros for common tasks and accurate movement around the screen, with adjustable resolution. Wired is good.
Because I'm excessive I also have a corsair K95 gaming keyboard with a bank of macros on the left side and cherry keys haha.
Finally (sorry, I talk too much)
I had an old R9 280x last year and it was really good. 3GB is fine for a normal residential size house.