Try to source for the following setup for your trading system.
They are not the best but it's priced reasonable and very stable setup.
You can have this setup running 24hrs/5days.
OS = Win 10 Home/Pro 64 bit or Win 7 pro 64bit
Motherboard = Asus E3 Pro Gaming V5
Processor = Xeon E3-1270v5, 3.6ghz, 8Mb Cache
HDD = SSD 250gb.
(Use External HDD for any additional storage or backup.)
Ram = DDR4 2133Mhz 8Gb x 4pcs
(If have enough $$$, go for ecc ram but its not necessary. ECC will decrease system performance around +/- 2%)
Power Supply = 600watts and above
System Case = Corsair Obsidian Series 750D (3 fans is enough but u can go for 6 fans~)
NEVER use water cooling kit. I once had mine leaked and i almost throw the whole system out of my window. Btw, i stay at 30th floor~
Display Card = Gigabyte gv-r938wf2oc-2gd x 2pcs
(Each Display Card support 4 screens. If you have 2 cards, you can have a 360degree view all over ur head!!! Wahaha~)
And lastly, get the fastest internet available and direct LAN connection.
If not, you can opt for wireless.
Router = Asus RT-AC88U
Adaptor = Asus PCE-AC68
Hope this help~