Need a Better Heatsink

[ThePcBuilder_69]

Hi i recently put and Amd Athlon 64 x2 5000+ 2.6 ghz in my computer for upgrade, and it works like a charm the only problem is when i use coretemp to check the temperature its around 45 degrees idle and 50-60 when playing a game, these temperatures aren't bad but if i turn off smart fan in the bios it will elevate from 45 degrees to 70 degrees while idle within a half hour. The problem with the heatsink is the fan is loud and annoying, it sounds about 2 times as loud as a laptop fan, and will switch from loud to extremley loud then loud then quiet. It is quiet annoying and makes it hard to play games. I mainly upgraded this computer to run tf2 and minecraft and hl2 engine which i can run from 80-250 fps. But the only thing holding my computer back from being perfect for me is the noisy fan.

Any suggestions on how to set the fan at a certian speed? Or a new fan/ heatsink to get?

I dont know what type of heat sink will fit in my case- The Original Model is an Emachines EL-1210-01e

The Case is Really Small its a Micro Pc



Specs


Mobo WMCP78M
Ram 4 Gigs DDR2
Gpu Nvidia Gefore gt 610
Cpu Amd Athlon x2 5000+ 2.6 ghz
Drive 320 Gigs


My Budget for a New Heatsink/Fan is around 25$ max

 

[scragnoff]

Hi ThePcBuilder69!

Can your budget go up to $38?

If you can, I suggest the low-profile Scythe Shuriken. Here is the link.

 

[the great randini]

http://www.newegg.com/Product/Product.aspx?Item=N82E16835118048