ePSXe Specs Help

im stuck on what specs i should give my ps1 emulator, i have version 1.5.2.

heres my PC Display Specs:

Processor: Intel(R) Core(TM)2 CPU 4300 @ 1.80GHz (1796 MHz)
Operating System: Microsoft Windows Vista
DirectX version: 10.0
GPU processor: GeForce 8400 GS
ForceWare version: 175.19
Total available graphics memory: 767 MB
Dedicated video memory: 512 MB
System video memory: 0 MB
Shared system memory: 255 MB
Video BIOS version: 60.86.50.00.20
IRQ: 24
Bus: PCI Express x16