Hello,

I stumbled across this recently:
https://www.raspberrypi.org/products/raspberry-pi-4-model-b/

I can use some guidance and advice from folks who have experience

with Raspberry Pi's. What I read so far looks good but I have questions.

If 'you' were to use a Raspberry Pi as a desktop replacement which one

would you recommend?

Is there a major difference in response times between the 4Gb and 8Gb

models ?

How hot does the unit become ? Does it require an add on fan shim ? Or

will work fine without one ?

How easy or difficult would it be to boot off an external hard disk as compared

to the SD card that comes with the Pi ?

Any other things to watch out for and be aware of before I purchase ? Instead of buying

the kit would it be cheaper to buy each item separately from different vendors ?

Thanks - Aruna