You should add a 120mm fan (if your case supports it). Just to have air flowing trough your case. Believe it or not but when I changed my chipsetfan wit a passive cooling element my temp dropped since the air ciculation is good in my case.
2*92mm an 1 120mm fan running at low speeds.
temps mesured with aerogate probes:
chipset: 39° (iddle) 42° (stressed)
MB:31°
VGA: 26° (idle) 32° (stressed)
HD: 29.5°
Inside case (random point): 27°
