http://www.comtradeshop.com/cpu_kuleri/cooler_master_hyper_-_212_evo_cpu_cooler_-_rr-212e-16pk-r1-15168
Is this great cooler for oc i5-3570k to 4.0GHz
4Ghz is easy, the stock cooler did it on mine (got a bit warm doing so though). That cooler's a great choice for the money, you can't go wrong with it.
http://www.comtradeshop.com/cpu_kuleri/cooler_master_hyper_-_212_evo_cpu_cooler_-_rr-212e-16pk-r1-15168
Is this great cooler for oc i5-3570k to 4.0GHz
4Ghz is easy, the stock cooler did it on mine (got a bit warm doing so though). That cooler's a great choice for the money, you can't go wrong with it.
The 212 EVO is a great cooler for the price. It should be ok for your use. Please note that all cpus overclock differently(4.0 should be easy for most).
Please ensure your case has the room for it as well.