While integrating NVIDIA Turbulence I made this demo to demonstrate some specific compatibilities.
You can download it here: http://amzn.to/1EoYsBx
Simulating ~8 million particles all with static object collision, increased the hardcoded limit in the UE4.
Runs from 60+ to min ~16 FPS.
This is my machine that this was made and ran at:
Motherboard: Z97-DELUXE(NFC & WLC)
PSU: Cooler Master "V Series" V850
CPU: Intel® Core™ i7-4790K 4.6Ghz
CPU cooler: Hydro Series™ H100i Extreme Performance
GPU: GeForce GTX TITAN X
RAM: G.SKILL Trident X Series 32GB (4 x 8GB) DDR3 2400 Mhz
SSD: Samsung SSD 850 PRO 256GB
HDD: WD Green 2TB
CASE: NZXT. Phantom 410 Black
Music by 30 Seconds To Mars.