I think i wouldn't change things much. I'd probably just replace graphic cards more often (always a single card, highest end), stick a Corsair Hydro cooler on the CPU and buy a decent sized 1080p display. And that would be about that. I'm happy with my current system, it's my long time crafted sytsem that is dead silent,s mall and quite powerful. I'd just use the money to easier refresh it as needed.
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