I am using thinkstation s30
with CPU : xeon-v2 e5-1620 3.70 GHZ 8 cache
8 ram GB
PSU 610w
basically I already bought GTX 1070 TI and it is working perfectly ... I just had to buy 6 pin to 8 pin adapter
bec GTX 1070 TI need 6 pin and 8 pin
it is working fine no glitching or framefreeze...