intel i5 2320

I have an old PC with the below specs: Processor: I5-2320 (2nd Gen) Motherboard: ASUS P8 H61-m LX rev 3.0 RAM: 8 GB PSU: 500W As my motherboard has only one PCIE x16 2.0 slot what is the max GPU it can support? I considered getting a GTX 1650 or RTX 3050 as my current GT 730 cannot run Dota 2...