I would like to know a bunch cooler that would be good for my 8400.
I have a Asus p5n32-e sli .
I dont think I will overclock it, I havent ever done overclocking so my knowlage on that is not that good.

Thanks

although i know alot of forum member here arnt fans of the hyper TX, the cooler master hyper TX2 is a good buy. if you search THG for the article on HS/f's then it is clear that THG certainly backs this cooler.

i have used it before and to well made and keeps things cool.

ands its nice and cheap.

I don't have any experience with an 8400, but I have a Zalman 9500 on my E6600, and it works great for me. Lowered my stock temps from 55/75 (idle/load) with the stock HSF to 33(or whatever ambient is)/45. Even with my OC my loads never go over 65.
http://www.newegg.com/Product/Prod [...] 6835118223

yup zalman arnt bad either i like there copper flower coolers. especially if you have a bigger budget, but if your not OC'ing much it might be a little much ti soend on a HS/f

My recommendation is the Noctua U12P
http://www.anandtech.com/casecooli [...] spx?i=3268
Clearly out performs most watercooling systems under the $200 line.
And not only that. Its also silent.
I built a pc for a friend and keeps his q6600 at 31-33 idle and never above 46 at load. (tat throttle test not prime95) Ambitient was 22-24 and the coolers was almost inaudible at all circumstances. (You know how those noctua fans are)

Fprgot to mention the q6600 is fully stable running at 3ghz at the above tests with 0.0125 v increase if i remamber correctly which i just did for stability. no actual lockups or anything.

Here is a link on the Best Cpu Cooler for this year below.
http://benchmarkreviews.com/index. [...] w&id=45&It

Depending of what type of case you have, mid tower or full tower. Will depend on which cpu cooler you get (120mm fan or 92mm fan).

Here is link for the Review on the OCZ 92mm Vendetta, which had the highest score.
http://benchmarkreviews.com/index. [...] &Itemid=62

OCZ OCZ Vendetta 92mm Ball CPU Cooler
http://www.newegg.com/product/prod [...] 6835202005

Now for the 120mm fan cpu cooler, the XIGMATEK HDT-S1283 120mm Rifle CPU Cooler, which had the 2nd highest score.
http://benchmarkreviews.com/index. [...] &Itemid=62

XIGMATEK HDT-S1283 120mm Rifle CPU Cooler
http://www.newegg.com/product/prod [...] 6835233003

Plus they only cost in the mid to upper $30 range. So these two cpu coolers are the best for 1st qtr. of 2008. Also OCZ has the Vendetta 2 out which has a 120mm fan. Oh and the OCZ vendetta series of cpu coolers', allow you do install it without taking the motherboard out of case.

You can not go wrong with either of these cpu coolers imho.

oh man, I thought he meant the nvidia 8400....

^^ having one of those days are we

Zalman 9500
Zalman 9700
Arctic Freezer 7 Pro
Thermalright Ultra 120
Thermalright IFX-14

Depends how much money you want to spend, ive used the Arctic Freezer and Ultra120, arctic is cheap easy to install and give good performance. Ultra 120 is expensive doesnt come with a fan, harder to install but gives awesome performance

Thanks for the help,

Finaly when I went shoping the only good thing they had in stock was the Zalman 9500.
After installing it im at around 51c.

Again thanks for the help

Is 51 your load temp or your idle temp? If thats load, then that's pretty good, if thats your idle, check to make sure you seated it right, because that's still too high.