RouterBoard 750 and 750GL practical differences

Welcome.
First thing is sorry about my english.
I would buy one of the models Mikrotik, RouterBoard 750 or 750gl.
In the Webstore and find this kind of Differences Between this models.
First is memory:
RB750 has 32 ​MB SDRAM. RB750GL has 64 MB SDRAM.
Second is speed of ports:
Ports speed:
RB750 - 5x Ports Ethernet 10/100 Mbit / s Fast Ethernet with Auto-MDI / X
RB750GL 5x Ethernet Ports 10/100/1000 Mbit / s

Differences Between ports speed its clear for me(may be outside „with Auto-MDI / X”
But this is not a point.

I would like to find out what do I get widh 32 MB SDRAM more in RB750GL,and increases efficiency with target network.
I have bandwidth 60 Mb/s and 15 users what i should buy rb750 or rb750GL?

What is the benefit from more SDRAM in RB750GL?

I greet.

Are you going to try to do any QoS?

Memory in ROS is used for buffers in queues in most cases. Other services that can be started such as hotspot and user manager use ram as well.

Your not going to get any noticble increase in performance out of the extra 32 mbytes of ram. If your looking performance, get fasted CPU.

The 32 megabytes is enough for most uses, and I think you would be fine with it.

Thank you for your response.