How do i max out the ceremony of my hp slimline s7620n workstation?

it cant realy run half-life 2 and games approaching that very capably the frame rate is very laggy and it freezes up who you try to nouns a model

How do i max out the ceremony of my hp slimline s7620n workstation?

More RAM - another gig.

Not much you can do to upgrade your onboard video - near is only 1 PCI expansion slot on this model.

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