1) Optimus is made for Notebooks that have the Intel HD Graphics + an nVIDIA chipset. Optimus enables the Notebook to switch between the graphics chipsets without the need of a restart. I dont know about the G55 but the G75 does not have an integrated graphics chipset, it only has the nvIDIA GPU (GTX 670) so why the need for Optimus? It doesn't make sense. If you ask me. On my previous Lenovo IdeaPad Y570 I hated this optimus thing because I walways want to run stuff using the nvIDIA GPU for maximum performance and dont need some low end integrated Intel Graphics chipset running at ANY time.
People who care about battery life so much will want to switch to the integrated graphics chipset to save power but we the performance users never do that.
2) reliability wise, ASUS is not bad but not the best. It's a matter of luck I would say... my previous ASUS G73Sw was a pice of crap and the monitor started giving me fuzzy weird colors within a month... The G75VW is on a total leage of its own (touch wood) so its a matter of luck really
3) G55 G75 have one of the best cooling systems
4) New laptops/chipsets come out every few months. Keeping up with the latest is impossible. IT should last you a good 2 years and 3 if you don't really care about upgrading. Meh, personalleh, I upgrade every 1 year
Honestly speaking.....WTF is a Sager? Never ever heard of that brand...
Notebook Manufacturer kings:
Lenovo, SONY, ASUS, AlienWare, Dell
I have never ever seen or heard about a Sager. The name sounds like it's some cleaning solution for the house LOL
😄