Amd 3500+ Cooling Q

Hey i have a AMD Socket 939 Athlon 64 3500+ on a ASUS "A8V Deluxe Wi-Fi" K8T800 Pro Chipset Motherboard, and it is runing at about 140°F and i really dont want it running that hot. Well unless thats not bad im not really sure... My case has 5 Fans and it runs petty cool (cool as in cold) so im not sure why the processor is jumping so high is that norm.?
i was thinking of geting a new heat sink and fan but didnt really find any good ones that go with my set up. And i woud go water cooling but unless they got a good one for under 110$ idk... What should i do? Is it runing ok?

Thank You

LinkinX

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