What are the 300's dimensions?
If you want good cooling look at the Prolimatech Megahalem, TRUE 120, and Thermaltake IFX-14. You also might consider the Corsair H50, although your mileage will very depending on your airflow setup.
I would recommend the H50 as a cheap, but efficient watercooling setup that should be very easy to integrate into most cases...
something i noticed that helps a lot for cooling is heat paste, between the processor and plate on the fan. just a suggestion
Honestly unless you are overclocking or using a Penitum 4 most of the newer Intel chips run fine with a stock Intel cooler. If you're using an AMD chip I have no idea how those run temperature wise. Never touched AMD.
do you need one? it seems like you want one so you can try to overclock more, but that doesn't necessarily mean you'll be able to.
for instance you overclocked to 3.1ghz or whatever it was, yet your temps are nowhere near dangerous etc. so you try to overclock more and it gets unstable
buying a new cooler will not magically make your cpu more stable at higher speeds unless what is making it unstable is the temp
so if you don't need one don't waste the money.
i think i have read somewhere that that would NOT fit in a 300, only a 1200 (among Antec gaming cases)
I check the reviews in there and people who own the 300 said it would fit. Meh, that's about all those reviews are good for anyhow!
Besides, I saw that you said you were going to invest in something else. I just got my wife the G5 mouse, and she loves it. Likes it much better then her 518.
cg
would i be able to install another 120mm fan on the side? or is cpu cooler or case fan?