DFI Infinity will give you 245+fsb after a good BIOS update and a lil' work. takes mods on a NF7-S v.2 to get past 240fsb usually.
Most new people to overclocking aren't going to immediately try and jump for a 245+ FSB so I wouldn't exactly count out the NF7-S v2 simply because it can't go that high which is almost ridiculously high. He'll be guaranteed to hit 215FSB and a little U-shape copper wire mod will get him past that, I don't know abotu 240 though but like I said, I've seen very few people overclock their RAM that high although good job on yours cause that's a nice FSB you got....
But if he's new, then he should simply stick to learning the basics of OC'ing and just get the FSB up to 200 from 133, or 166, depending on what chip he gets and work on it from there.
I don't know why you say this, because if you're referring to the vcore it doesn't stop at 1.7 it goes up to 2.1v I believe, but you are correct on the dimm voltage max out at 2.9, but again....this is only a problem if you are trying to completely max out your FSB, but in his case, simply getting say a 2400+ XP-M chip to 200FSB would be a good first time achievement.
Regarding the heatspreaders......I don't know....With the thermal adhesive stick that goes on the actual chips, I doubt much of the metal that creates the heatspreaders actually get any heat being that the pads are rather thick on most it seems.....so they probably make very little difference, but like you said, they look nice and besides if they do nothing I guess that's better than harming your system.....surely it's gotta dissipate a little heat, but since we don't have RAM Thermal probes, it seems more like a marketing invention geared towards OC'ers
so shiny.
