case fan and ram issue

[adlianb]

i'm thinking of getting additional case fan but i don't know wat size of the fan i should get. is it 80mm or 90mm?? any recommendation on which fan i should get? i prefer quiet fan.
also, right now i'm using ddr ram and thinking of getting additional ram, can i use sdram? so my comp will have ddr and sdram...will that cause conflict?

 

[spyzdope]

Unless you want to mod your case, you've pretty much gotta go with whatever size fan holes are in your case. However, the larger the fan, the lower the speed required to produce a given amount of flow. So if you don't mind cutting up your case, it is ideal to slap the biggest fan possible in there and run it at a lower speed to keep it quiet.

As far as the ram, you can't use the ddr and sdram together, in fact my motherboard manual says that trying to do so might actually damage the motherboard!