For my computer case I have a very tall old server type case that has 2 fans in the front and 2 fans in the back. My new video card is an EVGA GeForce 6200 without a fan but I called EVGA and the rep said that it runs so cool it doesn't need a fan. My power supply is a thermaltake 420 watt top mount with a good built in fan. My processor is and Intel P4 2.26. I have the Intel active monitor program that beeps if my computer gets too hot. Most of the time I just look at the internet but sometimes I play video games for a couple of hours or more at a time. I don't run any air conditioning in my home just window fans to save money one the electric bill but I am having a big problem with my computer case getting full of dust. In my computer case I have two 80mm fans in the front and two 80mm fans in the back. For a while I was running all 4 fans all the time thinking the cooler my computer runs the longer it will last but running 4 case fans fills my computer full of dust too fast. So I have installed two toggle switches (with soldered wires) so I can turn the case fans on or off as needed. The case fans have built in lights so I can easily see if they are on or off. I have my main HDD mounted horizontally in a rack right behind the front top case fan because I figured the cooler the HDD is the longer it will run. For just looking at the internet do you think I can get by with leaving all my case fans off in the summer? I don't run much heat in hear in the winter time. I only use fire wood for heating so I am sure I don't need case fans on cold days. If need to run case fan(s) all the time anyway should I have just a front case fan or just a rear case fan stay on all the time or should I have one front and one rear case fan stay on all the time? When I play video games I plan to turn all the case fans on.