Its the ATI one and well, is it a good thing? I've seen reviews saying that it overheats or has high temperatures? Would that affect the system as in would the high temperature of the graphics card burn other parts on my cpu like the processor, motherboard, hard disk? =)
Since the 4850 use cooler that vents hot air inside the case and run at high temperatures, yes, it will definitely add to the case temperature. Add a few extra case fans should help.
As for the card itself overheating, keep in mind that while it runs hot, the gpu also tolerates higher temperatures than others. 4850/4870 are known to hit 100C without losing stability or even artifacting. By comparison, my g92 8800gts, while usually don't exceed 60C even at high load, starts artifacting at 80C. Temperature is relative.