Also there's a warning on SAMP that if it looks like people are hacking (ie moving slightly faster than you), its because they've got higher fps. I've never tested it, but I've seen people post about it in the forum.
WOAH WOAH NO.
Higher FPS != (does not equal) speed hacking. You need to get your facts right.
I get an average 300-400 FPS on Blockland, while others can only get like 100-200, that doesn't make me move faster at all.
The only real way that speed hacking can be done is if you somehow hack the game to run at a higher TIMESCALE than what the other games are running at (which is very hard to do).