Hey guys, I'm just doing some initial searching for a better laptop. I know next to nothing regarding laptops, the current one I have was given to me years ago

, so hopefully you guys can recommend some models for me to check out. Thanks.
My current laptop is hp pavilion dm4, very old already:
http://support.hp.com/us-en/product/HP-Pav...ment/c02658409/1. Preferred Brand: None
2. Budget: Flexible, but hopefully around RM3000
3. Usage:
Main usage is to run high demand simulation software, i.e. mathematical simulation software MATLAB. Those of you in engineering field may encounter this software before. My current laptop becomes unresponsive when running heavy simulations cause the simulations take up all the computer resources. I believe the 4GB RAM of my existing laptop is insufficient, so I guess I'm looking for one with minimum 8 GB RAM. Better processor will also make simulation faster I believe?
I'm no expert at this, do correct me if I'm wrong.
4. Preferred laptop/screen size
Not smaller than my current one which I think is 14 inches.
Hope you guys can recommend some brands and models for me to check out. Thanks!

Dell only Inspiron 7447 fit ur budget.
Other brand I not sure... but ur software need a good CPU n yes 8GB ram. add SSD if u hv the budget