How much memory will Windows 10 TP take up on my 8 GB L620?

[Windows Central Question]

My L620 was on Windows Phone 8.1. Recently, I decided to enroll myself in the Windows Insider program. And on slow ring, I updated my phone to Windows 10 TP Build 10166. Before getting Build 10166 I had 4.8 GB of used memory, and after getting the same it was 5.7 GB of used memory (out of 7.2 GB). Now my question is, if I keep on updating my phone to higher builds i.e. Build 10536, will it keep on taking up my phone memory until its all gone?

 

[Cryio]

A clean install of WP8.1.1 with no extra apps, just core apps updated and firmware takes 4.5 GBs out of 8 on my Lumia 820. Running W10M now with a few more light apps like Facebook, 9gag, Widows Central, WmPowerUser and I've yet to break the 4 GB barrier. W10M consumes less space than WP8.1.1. Just do a hard reset and everything will be fine.