Emulation questions??

[cpetzol2]

I have a AMD 64 FX 3200+, 512 Mb RAM, and 64 Mb Video Card.

I was trying to play Blitz last night, and it ran horribly slow. I noticed that I am running out of HD space, so maybe there was no virtual memory available, but anyway.

Is anybody else able to run Blitz at a good speed?
What are the specs on your computer if you can?
Is Blitz just one of those games that wont be emulated up to speed for a couple of years yet?
Where is the line between the games that run wonderfully on MAME and the ones that just run slow as hell?

Or possibly, should blitz have been running good for me. In most MAME games, what is the limiting factor for emulation; CPU, RAM, or VC? I wasnt running any other applications, is there something that I may have set incorrectly that made MAME run inefficiently?

Thanks for any input.