small fan on motherboard making noise

[Luke]

see but the issue isnt over time, over a span of about 2 sec it goes fast-slow-fast-slow and it will stay that way for awhile... sometimes it happens when i have a lot of load playing video games but other times i can just have my browser open and it will do it, kind of random

the fan/heatsink must be crap then, because as soon as it slows down the temps sky rocket and the fan kicks in high gear again.