Vede cineva vreo diferenta intre aceste doua modele? (inafara de faptul ca unul are 4GB in plus pt. nici macar un leu extra)

Notebook / Laptop Asus 15.6'' R501VB-S3116D, Intel® Core™ i7-3630QM Processor (6M Cache, up to 3.40 GHz) Ivy Bridge, 4GB, 750GB, GeForce GT 740M 2GB, Black - PC Garage
Laptop Asus R501VB-S3116D i7-3630QM 750GB 8GB GT740M 2GB r501vb-s3116d