What kind of setup or rig has 550 MH/s of scrypt mining power?
also, whats a good guide to start some serious mining? Like, 4 video cards per computer or something?
Do you mean KH/s? A single HD 7950 should get you around 700 KH/s when mining scrypt coins. So with 4 7950s you should be able to get around 2.8 MH/s which is definitely a pretty serious setup for mining.
what settings? I've never been close to that # with a 7950.
Gigabyte WF3 7950 w/ F43 bios & modified .bin files from litecointalk forums(
https://forum.litecoin.net/index.php/topic,6058.0.html):
--thread-concurrency 24000 --lookup-gap 2 --gpu-engine 1130 --gpu-memclock 1250 --gpu-powertune 20 -w 256 -I 17 -g 1 <--- 640kh @ 77degrees with no additional cooling
--thread-concurrency 24000 --lookup-gap 2 --gpu-engine 1130 --gpu-memclock 1250 --gpu-powertune 20 -w 256 -I 20 -g 1 <--- 701kh @ ~83degrees with no additional cooling
With better cooling and tweaking the clocks, I could push more.