HDMI version and CPU thermal throttling limit of Dell Vostro 15 7570

I was not able to find Dell Vostro 15 7570 setup PDF document. I have found manual only[1]. Manual says about HDMI 1.4. Is it really 1.4?  Similar Inspiron has 2.0a[2].

What is thermal throttling of CPU in named laptop? I.e. temperature in Celsius when it starts to throttle? 

It is same as Dell Inspiron 7577 or lower? Could I change it?

Same question asked here [3]

[1]http://topics-cdn.dell.com/pdf/vostro-15-7570-laptop_owner's%20manual_en-us.pdf

[2]topics-cdn.dell.com/.../inspiron-15-7577-laptop_setup guide_en-us.pdf

[3]forum.notebookreview.com/.../