Does the case matter in a pc?

[neckneck]

so im on a $400 budget. i had this nice build but i was thinking if i could just use my case, cpu, and ram from my old computer? the case is a generic old greyish? color. cpu is a pentium idk the exact model. and ram i believe is ddr2 4 gigs

 

[rolli59]

The case itself only has effect on cooling performance. New hardware runs DDR3 ram and you can get 2x4GB for less than $40.

 

[neckneck]

Best answer selected by neckneck.