How good is Neo Geo emulation via retroarch?

I've had no speed issues whatsoever with Neo Geo games via RetroArch on a New 3DS. I mean ... OK ... the games have slowdown, but that's Neo Geo for you ... there is an option to overclock the Neo Geo's CPU, but even on New 3DS you'll be pushing it. It goes up to 200% speed, but you can really only bump it to like 110-120% without ending up having the reverse effect because the 3DS can't keep up. That does indicate that the New 3DS is sort of cutting it pretty fine, performance-wise, so it's possible you might encounter some emulator slowdown in some games, all I can say is that I haven't seen any that wasn't caused by upclocking the Neo Geo.

 

Retroarch gives you multiple Neo Geo options

- FBA (stand alone core)
- FBA Neo Geo (Neo Geo only core)
- Mame 2000
- Mame 2003

Some versions of some games will probably perform best on a certain core. I associate the best overall performance (accurate and speedy) with the FBA Neo Geo core, but your mileage may vary.

I's also use an old (1.3.2/3) build of retroarch rather than a new one.

 

For NeoDS you’ll need old neo roms from ancient versions of mame (0.113 time span I believe) I wrote an updated mame romset converter many years ago adding support for romsets which didn’t work out of the box on NeoDS, if you’re interested in looking at it it’s here: http://lngn.net/neodscnv.zip. You’ll need those old roms around to make the correct sets for conversion.
It’s kind of a headache but it does work and back then at least it was a great way to play the neogeo classics on a ds, but your mileage may vary.


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