My specs are ddr3 8 gb ram,xfx Radeon HD 5450 ddr3 and processor kinda old Intel celeron 450 @2.20 ghz and psu idk how to check but it's as old as the cpu... So I needed to know which cpu and psu to replace mine with so as to not bottleneck the graphics card and required power for the ram gpu and cpu in the psu... Running this system for some years now and no problem with anything I guess only had to replace my old motherboard, sadly it supports only LGA775 chipset..so kindly please advice... Thank you