Best Heatsink Upgrade?

[narco]

Hello, i have a Cooler Master N520 CPU Cooler on a Phenom II 965. It gets around 50-55c max at 3.8ghz @ 1.35v, and that wasn't much of an improvement from stock. I can spend around 70$-80$ max, would like to try to get below that. I would like to get a new CPU cooler so i can reach 4ghz or higher. I can reach 4ghz now, but it is already running a little warm. Does anyone have any recommendations? Any suggestions help, Thank you!
PC Specs:
CPU: AMD Phenom II x4 965 @3.8ghz (1.35v)

RAM: Wintec DDR3 4gb @1333 x2

GPU: PowerColor HD 6950@ Core: 880 Memory: 1300

MB: Biostar TA990FXE

PSU: XFX Core Edition 850w

HD: 1TB Seagate

Case: Thermaltake Level 10 GT

 

[fb39ca4]

55C is still quite cool, you should be fine right now. I would only get worried past 80C.

 

[narco]

55C is still quite cool, you should be fine right now. I would only get worried past 80C.

The max safe temp for my CPU is 64c, and i've heard that when PIIs get over 55c they tend to lose stability

 

[wurkfur]

Noctua NH-D14

Google it, probably the best option and it isn't loud at all. Outperforms many closed loop water coolers.

 

[narco]

Noctua NH-D14

Google it, probably the best option and it isn't loud at all. Outperforms many closed loop water coolers.

Thanks, Is there any cooler close in performance, but a little cheaper? anything below 70$ shipped i can afford right now, I will try to get the Noctua NH-D14 tho. I should be getting a little more money soon tho

 

[davcon]

COOLER MASTER RR-H612
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103103

 

[narco]

Best answer selected by narco.

 

[narco]

Noctua NH-D14

Google it, probably the best option and it isn't loud at all. Outperforms many closed loop water coolers.

I ordered it today, Thanks!

 

[narco]

It dropped my load temp with prime95 from 50-55c to 40-43c!