thx for the suggestion, but i dont plan to CF or overclock at all. So i think the biostar one is better for me?
CF/SLI support is better for future-proofing because although you almost certainly won't do it now, you can do it in the future when a single card isn't enough anymore. Having support for CF/SLI now so you can upgrade your graphics without wasting the card that you buy now makes future upgrades cheaper because if you want almost double the performance, you can just get a second cheap card instead of a more expensive card to replace your current one. Considering that your CPU doesn't support anything more than moderate overclocks if it's the i5-3550 like your first post implies (you said i3550, so I assume that you meant the the i5-3550, please correct me if I'm wrong) and you seem against multiple graphics cards, the cheaper board should suffice. Just make sure that you don't buy a PSU just because it's cheap like the motherboard. Most cheap PSUs, unlike many cheap motherboards, are very unreliable, so you need to be more careful with them.