this is a very basic build compared to most of what's going on here, but i like the results.
i had an hp pre-built system that i wasn't entirely happy with, so i got some new components and migrated some old.
new bits:
case: rosewill mx2-s (agonized about this, but was not happy with the fussy designs of most of the high quality cases out there)
power supply: seasonic 560X
cooler: corsair h90 AIO
extra fans: two 80mm enermax
video card: evga gtx770 sc 2gb
mobo: asus rampage IV gene (LGA2011) mATX
optical: panasonic uj-265 blu-ray burner
bits i migrated from the hp:
cpu: intel i7-3930k
ram: 4x4gb, don't recall the type
ssd: OWC 240GB accelsior PCIe card
hd: two seagate ST3000 barracuda 3TB
os: windows xp pro
keyboard: logitech k750 solar powered wireless
mouse: logitech m570 wireless trackball
monitors: two dell U2413 24" wall mounted panels
audio: B&W mm-1
the transfer was very smooth. pretty much everything fit exactly as it should, with the only exception being the need to mount the H90 on the interior side of an exhaust fan rather than an intake fan. to mitigate the warm air feeding into the radiator i added the two 80mm fans. thermal results are pretty good. my only quibble is that it's slightly noisier than i'd like, which i'm working on.
i can't believe how far these components and cases have come since the last time i did a build - more than 5 years ago - it's like night and day. everything fits together, cable management is easy and clean, standards are adhered to! i'm particularly impressed with the asus motherboard, the rosewill/jonsbo case, and the seasonic modular power supply.
these pictures are crappy, and i need to tidy up the cables behind my desk, obviously.
everything assembled. worked perfectly on the first power up
i later added two intake fans over the vents at left
here's the other side of the motherboard tray where all the cables are routed. i might tidy this up a bit now that i see how it all laid out.
all done, except for some cable management behind the desk
thermal results are pretty good considering the design priorities of the case.
peak with full utilization of all cores and the gpu at 100% (prime95 and simultaneous nvidia demos) is about 75C.
http://www.431.org/misc/rosewillmx2s-corsairh90.jpg
without the two extra rear intake fans it was about 8C higher once the GPU kicked in, and 6C higher without.