Please do not imply that all CHD games run the slowest. Over half the chds (that run at all) will run fine on his system. Some chds will run okay on my 3 year old system.
Sorry mate, I'm very new to this whole thing. I wasn't trying insinuate that's what you were asking when I asked about the CHD's.
No problem, you're saying what many people say, I was just having a bad day when I read your post and hopped on my soapbox.

(In saying it on in posts like this, more people will think the same, and pass it on, etc.)
Interesting to hear about the CHD's, though. I just assumed they were just big slow clunky games since their sizes are usually pretty big.
"Size isn't everything."

CHD = Compressed Hunks of Data. (Used to be "Compressed Hard Drives" but then games like the dancedance that have CDs were added.) Mame easily accesses the CHDs faster on modern harddrives than the original arcade HDs (and especially CDs), and doesn't need to load the whole CHD into memory or anything.
When the laserdisk games come on line, even more CHD games will run fast enough.
Can you elaborate please? I'd love to play DL in mame...
Laserdisks are like analog CDs, and if-and-when these game are added to mame, the LDs will be held in CHDs. And since the original LD games used about the same powerful hardware as other games released at the same time period, and CHDs on modern HDs can be read faster than the original LDs, modern computers should be able to emulate the games fine.
MameDev is slowly trying to convert from the analog LDs to the digital world. Apparently they are going to be very big CHDs. But don't bug them about it, as bugging them usually delays it.