[v9k]

Pentium 4 is under netburst Microarchitecture. which uses higher clock speed, higher power and more heat.

compared to core

Intel Core family are from Core microarchitecture. uses low clock speed but has many memory and hyper threading abilities which makes it fast

Research them both and compare and take into consideration what model they are

http://ark.intel.com/products/family/78132#@All

http://ark.intel.com/products/family/79667#@All