Does overclocking the the FSB affect the chipset?

[perryinva]

This may be obvious, but it's not to me..LOL...but are the chipsets, like the nforce4 ultra designed to run at 200 mhz, so when you OC the motherboard/cpu are you also OCing the chipset and is it getting hotter? I ask mainly because I took off the loud active cooler on my board and put the Zalman passive chipset cooler on (with AS5) and it's a hot little sucker...much, much, much hotter than the SI-120, on an Opti -165 at 290mhz. I have good case vent, dual Nexus 90's in and the Tri-cool 120 out on low, plus the PSU fan on an Antec P150. My Epox MB EP-9npa+ultra shows system temps at 85F usually, but I cant tell where that is being measured.

 

[Arcygenical]

Ocing the FSB causes the chipset to do more work, increasing it's heat output. You might need to direct some airflow over that HSF, especially if it's passive (albeit a very powerful passive HSF).