I installed LMCE on my old computer this last weekend... AMD 1300Mhz, 756meg ram, 250 Gig PATA hard drive, Nvidia 6800 video card, Haup 250 TV card. Installing was slow...slow...slow. Took about 3 1/2 hours to install everything (I used the two CD install and not the DVD install). Now that it is running, performance is okay. Audio files play just fine, I can rip my DVDs to disk.. that takes about 25 minutes. I can watch the ripped DVDs no problem. I can watch live TV and record TV. So, the install was slow but actual use if very useable. I am mildly impressed that such a low spec computer can work as a core machine and as a media director.
Mike