You need to look for Processor for installing Vmware ESX4.0 on your laptop on Vmware Workstation .For Vmware specific post your query in Vmware Communities and they will let you know the best deals .
Some laptops with good Vmware Support that I found from Vmware Community :-
Dell Latitude...
I am looking for laptop which can run multiple server applications like Vmware ESX Host ,SQL Server and virtual OS .Overall I want to have i7+8GB Ram
General Questions
1) What is your budget? (INR or USD)
Rs .45 - 60 thousand
2) What size notebook would you prefer?
Mainstream...
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