sample parts:
intel lga2011-v3:
core i7 5820k $390
asrock x99 extreme3 $195, $155 after MIR
extreme4M $205, $165 after MIR
gigabyte ga x99 ud3 $210, $180, after MIR
G.SKILL Ripjaws 4 series 16GB (4 x 4GB) DDR4 SDRAM DDR4 2133 (PC4-17000) F4-2133C15Q-16GRB $130
intel LGA 1150:
xeon e3 1220 v3 $205
xeon e3 1231 v3 $257
asus z97E/usb 3.1 $120
z97A/usb 3.1 $155
G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) F3-1600C9D-16GXM $100
seasonic s12ii G 650w psu $100
SeaSonic G Series SSR-550RM 550W ATX12V / EPS12V 80 PLUS GOLD $80
intel skylake platform may also be an option when it comes out later this year.
prices are taken from newegg.com. prices change on a daily basis.
make sure your parts are compatible by checking cpu support list and QVL.
recommendations are based on price only.