I mostly work on vmwares (virtual machines). Sometimes when I am multi tasking my virtual machines lags, that is my mouse sometimes freezes and the windows on my guest OS lags and freezes too. And I might consider upgrading a graphics card (I have none right now) if it will boost the performance of my virtual machines. Will graphics cards boosts the performance of the virtual machines? And if it will what significant changes will it do to the performance of my virtual machines and the host OS too?

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