Limiting temps to low 70's C
$30 - 35 will get you 4.4 - 4.5 GHz w/ the Hyper 212
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103099
$45 - 50 will get you 4.6 - 4.7 GHz w/ the Hyper 612 PWM or Scythe Mugen 3
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103103
http://www.newegg.com/Product/Product.aspx?Item=N82E16835185168
$85 - 90 will get you 4.8 - 5.0 GHz w/ the Phanteks PH-TC14PE or Thermalright Silver Arrow
http://www.newegg.com/Product/Product.aspx?Item=N82E16835709001
http://www.frozencpu.com/products/11676/cpu-tri-77/Thermalright_Silver_Arrow_Dual_160mm_x_140mm_Fan_Universal_CPU_Cooler_Sockets_775_1156_1366_AM2_AM2_AM3.html
http://benchmarkreviews.com/index.php?option=com_content&task=view&id=797&Itemid=62
http://benchmarkreviews.com/index.php?option=com_content&task=view&id=674&Itemid=62&limit=1&limitstart=5
http://www.vortez.net/articles_pages/phanteks_ph_tc14pe_cpu_cooler_review,14.html
Im gonna disagree with the above post ..... in that the self contained water coolers simply do not post the numbers that the better air coolers do ... I also find them a bit noisy on high fan settings ...... from the above link:
Stock Fans
Coolit ECO A.L.C. 75.2 +12.9
Corsair H50 73.1 +10.8
Coolit Vantage A.L.C. (extreme) 73.0 +10.7
Thermalright Macho HR-02 71.0 +8.7
Prolimatech Super Mega 67.2 +4.9
Antec Kühler H2O 620 65.9 +3.6
Corsair H70 (high)* 65.3 +3.0
Thermaltake Frio OCK* 65.2 +2.9
Thermalright Venomous X 63.0 +0.7
Cooler Master Hyper 612 PWM 62.3 +0.0
Thermalright Silver Arrow* 61.8 -0.5
Cooler Master V6 GT* 61.2 -1.1
The H70 is about 3-4C behind the top ranked air coolers.
The H50 is about 10-11C behind the top ranked air coolers.
Same Fan
Corsair H50 68.1 +9.1
Coolit Vantage A.L.C. 67.8 +8.8
Corsair H70 64.7 +5.7
Thermalright Macho HR-02 64.5 +5.5
Thermaltake Frio OCK 64.3 +5.3
Coolit ECO A.L.C. 64.3 +5.3
Cooler Master V6 GT 59.5 +0.5
Prolimatech Super Mega 59.4 +0.4
Cooler Master Hyper 612 PWM 59.0 +0.0
Antec Kühler H2O 620 58.7 -0.3
Thermalright Venomous X 58.0 -1.0
Thermalright Silver Arrow 55.8 -3.2
The H70 is about 6-9C behind the top ranked air coolers.
The H50 is about 10-12C behind the top ranked air cooler.