How long will the system last?

Question

laptops

Hello, friends. I understand that the topic is frequent, but if someone is interested or can share knowledge, then please help.
I choose a laptop for myself:
1. Budget up to $800 .
2. Field of activity: php, nodejs, vm, IDE (phpstorm), docker.
Unfortunately, on the topic of iron is rather weak, but you need a laptop + - for 2 years.
Somehow found a $725 laptop , Lenovo IdeaPad 520-15IKB (80YL00M4RA)

Екран 15.6" IPS (1920x1080) Full HD, матовий/Intel Core i7-7500U (2.7 - 3.5 ГГц)/RAM 8 ГБ/SSD 256 ГБ/nVidia GeForce GT 940MX, 2 ГБ/без ОД/LAN/Wi-Fi/Bluetooth/веб-камера/DOS/2.2 кг/бронзовий

According to the description, it's cool, but it confuses the processor which has 2 cores / 4 threads and 8 GB of RAM (4 GB is soldered on the board and another 4 GB bar). That is, if I want to add RAM (and I want to), then there will be problems due to the fact that the second bar cannot be replaced.
I would be glad to hear advice and comments.

Answer 1

Laptop Lenovo IdeaPad 320-15IKBRN = $740
Screen 15.6" (1920x1080) Full HD, matte / Intel Core i5 -8250U (1.6 - 3.4 GHz) / RAM 16 GB / SSD 256 GB / nVidia GeForce MX150, 2 GB / DVD+/-
RW / LAN / Wi-Fi / Bluetooth / webcam / DOS / 2.2 kg /
gray 8550U (1.8 - 4.0 GHz) / RAM 12 GB / SSD 256 GB / Intel UHD Graphics 620 / no OD / LAN / Wi-Fi / Bluetooth / webcam / DOS / 2.2 kg / gray

Answer 2

8 gigs is not enough. Vidyaha seems strange to me.
After building up the RAM for 2 years, it should be enough if there are no games. Although HZ what will be there in a year - it is difficult to predict the gluttony of the software.