Trading does not necessarily require the fastest or newest computer hardware. A laptop is usually sufficient to start manually trading.
In my opinion, having multiple monitors does help with productivity. I find that dual monitors is the perfect amount for most people, once you have a dual setup it’s almost impossible to go back to using just one screen. A triple monitor set up takes time for the user to get used to; I remember I used to always forget to utilize one of them when I first had it set up. But once you’re used to it, a triple monitor setup is just great. I have had quad and hex monitor setups before, and although they look impressive, they are more of a pain than anything and I find lowers productivity.
As for operating system, chances are Windows 10 is your best bet. OS X will have compatibility issues with most commercial trading software and it’s not worth limiting your selection because of it.
For hardware, a medium-grade PC or laptop should do the trick. If you wanted a custom built machine, a 4th-gen (or higher) i5/i7 CPU, 16GB DDR3 memory, and a GTX 700 series (or higher) graphics card will be more than enough to support a dual or triple monitor set up. If anyone needs help with choosing parts to build a computer, I’m more than happy to help.
With that being said, as an algorithmic trader the requirements for hardware are higher than that of a manual trader. My personal setup is a bit complex, but here’s the basics:
CPU: Intel Core-i7 5960X
Memory: Corsair Dominator Platinum DDR4 32GB
Motherboard: ASUS X99 Deluxe
Graphics Card: EVGA Titan X SC (2 of them in SLI)
Power Supply: Corsair AX1200i
Main Storage: Samsung 950 Pro M.2 512GB
Secondary Storage: Samsung 850 EVO 1TB (2 in RAID 0)
Operating System: Windows 10 Pro
Monitors: ASUS ROG SWIFT PG279Q (3 of them)
For cooling, I’m on a fully water-cooled loop.
If anyone is interested in the parts I chose and why, just ask, I can justify it. And yes, it’s a COMPLETELY OVERKILL build for majority of people, at almost $11,000. I use this setup for developing trading strategies, but also for video and photo rendering, virtual reality and other hardware intensive tasks.
I’d post a picture right now, but I’m in the middle of renovating the office. Should be good by Monday, and I’ll take some.