Yes, I have another question.

I am planning on buying and building this PC:

http://pcpartpicker.com/p/eo0S

But I have a question. Would it be possible to use my current Hard Drive,

http://i.imgur.com/Fqu2p.png

Instead of buying a new one without impacting performance too much?

Would I be better off buying the hard drive recommended, or would it be OK to use my current one?

As long as it is also 7200 RPM it shouldn't impact performance to much.

Closed per OP request as resolved.