This is not the Acer Extensa 4630Z. This is 4630 and the major improvement on this is the processor which is Core2Duo. (The 4630z is a Dual Core processor powered laptop). This laptop also comes with HDMI port which is missing on 4630z model. The chipset is GM45 from Intel and comes with 8xDVD Super Multi Doble Layer drive. The hard disk drive is same on both these models which is 160GB capacity. The more price of about Rs-1500/- is for its processor and the HDMI port. If you are not in need of these improvements, you can go for the Acer Extensa 4630z Laptop Model.
ASUS X250TA ATOM/Windows10/11.6inch
ACER ASPIRE ES1-131 Celeron/Windows10/11.6inch
HP 15-AC168TU Pentium/Windows10/15.6inch
Dell Vostro 3558 Corei3/LINUX/15.6inch
Lenovo G50-80 Corei3/Windows10/15.6inch
Dell Inspiron15 3558 Corei3/Windows10/15.6inch