I'm curious and there may be something I may be missing, but for LTC mining it seems the L3+ is being pushed as the only way to mine LTC now, yet my Rx 580 is doing better(~800mhs) than what is listed as the average mhs rate for the L3+ (~520). I literally just started mining LTC again as I post this so I have nothing mined recently at the moment and am waiting to see. Been mining FTC heh. Should I not even bother or am I right? Is my RX 580 actually worth using?
Don't even bother. If your GPU is doing 800 MH/s then you must be on a different algorithm, or possibly you mistook kH/s for MH/s.
I think your card runs around 30Mh/sec on the Scrypt algorithm, or about 17 times slower than a L3+.
Last time I checked, the fastest GPU on the market could do something like 1 MH/s on scrypt, or about 500 times slower than a L3+.