I would like to speed up my notebook by replacing the HD with a traditional SSD. The notebook is an HP Pavilion dv6-2153el: dv6-2153el I7 processor Intel Core i7-720QM 1.6GHz 4 GB DDR3 (2 x 2048 MB) NVIDIA GeForce GT 230M Hard Drive SATA 7200 rpm 500GB SATA optical drive: LightScribe SuperMulti DVD ± RW with Double Layer Support Integrated 10/100/1000 Gigabit Ethernet LAN Wireless 802.11 b / g / n I would like your advice to make a choice right for me. CAPACITY SSD Since I do video editing, given the amount of files to manage thought of taking the cut 512GB instead of 256. With 512GB can hold both programs and data into a single new SSD without the need for external HD to be connected via USB2 (slower). Backwards compatibility 'SSD-NOTEBOOK On the webpage of my HP Pavilion dv6-2153el I can not find evidence of the type of controller that is on the edge of my notebook. How do you determine exactly which controller is sata nle my notebook? I imagine it's a SATA II 3Gb / s, since the original hard drive is a Hitachi SATA II 3Gb / s Hitachi Travelstar 7K500 (HTS725050A9A364). According to you my notebook HP Pavilion dv6-2153el has a SATA II or SATA III controller? CHOICE SSD If the controller of the notebook is SATA II 3Gb / s, I would find a bottleneck in the notebook than the SATA III 6Gb / s SSD. This makes me think that it is useless to spend more money for a super-fast SSD type Samsung MZ-850 pro 7KE 512GB to 260 €. Assuming you have the controller in the notebook sata II 3 Gb / s I had thought of: KINGSTONE HiperX SHSS37A 480GB (195 € best price online shipping included) OCZ ARC100 25SAT3 480 GB (177 € best price online shipping included) Furthermore we would also SAMSUNG 850 512GB MZ-75E (185 € best price online shipping included) What do you think?