I assume you actually mean that it has an integrated video card that shares up to 64 mb of RAM (I've never heard of built in memory). That means it has a low-end video card that doesn't have its own memory and instead uses up to 64 mb of your total memory. Dedicated system memory and shared memory generally refer to discrete AGP or PCI Express graphics cards, so they don't really apply.

You shouldn't really have problems with video quality, but since it's low-end graphics and doesn't have a lot of memory, you may be required to use lower graphical settings in most software. You could improve it by buying a discrete graphics card, but the motherboard is so old that I don't think it would support most modern graphics cards.

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