Hmm...
ASUS H97M-PLUS
http://www.asus.com/Motherboards/H97MPLUS/specifications/
Good "value" board, provides all new bell n whistles and uses generic "stock" controllers including Intel LAN without being overly expensive.
Intel i5-4590
http://www.newegg.com/Product/Produ...9116991&cm_re=intel_i5-_-19-116-991-_-Product
http://ark.intel.com/products/80815/Intel-Core-i5-4590-Processor-6M-Cache-up-to-3_70-GHz
Very good performance, Intel really runs around AMD in circles these days by far (in almost any case)
Source:
http://www.overclock3d.net/reviews/cpu_mainboard/amd_athlon_860k_black_edition_cpu_review/1 - In short, it's slightly faster than A10-7850K
http://www.xbitlabs.com/articles/cpu/display/amd-a10-7850k.html - A10-7850K is sadly way behind even Intel's i3 line up
..and the new 4590 is much faster than the ones tested
http://www.xbitlabs.com/articles/cpu/display/intel-haswell-refresh.html
Plextor PX-256M6Pro 2.5" 256GB
http://www.newegg.com/Product/Product.aspx?Item=N82E16820249049
As long as you go for Marvell or Intel controllers you're fine in general, Sandforce and others have "odd" issue and performance is questionable in some scenarios. This Plextor unit uses a Marvell controller, 256Gb drives performs much better than 128Gb and it comes with 5y warranty. Given its price it's a great deal (40$ discount).
Provides good performance given its price,
http://www.guru3d.com/articles_pages/plextor_m6_pro_ssd_review,1.html
Fractal Design Define R4 Black Pearl
http://www.newegg.com/Product/Produ...0&cm_re=fractal_design-_-11-352-020-_-Product
Fractal Design makes very nice cases, thoughtful design and acoustics are in general very good. Great price right now too... (40$ off)
Antec HCG-520M 520W Modular
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371058
Go with something made by Seasonic, Superflower or CWT and you have yourself a good PSU. 65$ and modular gives you a very good bang for the buck and if you want to add a beefy video card later on and/or add lots of HDDs you have a PSU that'll handle it just fine. Being modular is also nice even if its not a requirement.
http://www.legitreviews.com/antec-high-current-gamer-hcg-520m-520w-power-supply-review_2017 - Seasonic PSU, you wont need anything better.
2 x Crucial Ballistix Sport 8GB 240-Pin DDR3 1600 (preferable)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820148661
Stick with memory that follow JEDEC specifications, good value RAM and low voltage helps keeping the temperature down which in the end lowers noise from fans. There's no point in going for 4Gb sticks nowdays as memory requirements gets higher and higher all the time.
As for optical drives... Do you honestly need one these days?
Wireless adapter, even though I think this is a bad idea if you can avoid it (do so at all costs) you're better off grabbing a miniPCIe to PCIe adapter off eBay along with an Atheros AR9380/AR9382 based card which should work reasonably well in FreeBSD (works great in Windows fwiw) and from what I've gathered from adrian@ latest gen of Atheros (QCA) usually has less bugs and this the latest 11n hardware available. If you want to upgrade to 11ac later on just swap the card as you much more WLAN cards using the miniPCIe form factor than PCIe.
While I think the keyboard is ridiculously overpriced we all do have our preferences I guess...
Regarding the headphones, I have no idea what happens if you try to plugin a pair of headphones with a remote into the computer but in general I'd highly advice you to have a look at Audio Technica as its a very well regarded audio equipment band and they do awesome headphones. If you want "cans" these might be of interest as they offer great price vs performance.
http://www.amazon.com/Audio-Technic...3633&sr=8-6&keywords=audio+technica+ath-a700x
The only downside for now is that you wont have any video support due to FreeBSDs aging video driver, it's in the works though. That said, CLI will work but I have no idea if X will work in some kind of compatible mode. Work is progressing so if you really need video working out of the box just grab an old video card for now. I'm pretty sure Linux works just fine and Windows works great (as usual in this regard).
Given the list
https://wiki.freebsd.org/Graphics I'd say grab an nVidia card as ATi (AMD) have horrible drivers irregardless of platform in my experience.
As far as prices goes, the computer itself ends up being cheaper and having roughly twice the performance than the one listed above and being less noisy too.
//Danne