Size of soft device

[Sergii]

Hello,

I use nrf52832 with 65 kb RAM.

I can't understand why soft device takes about 30k RAM memory.

I see "reserved_ram" has 30k.

Can I change size for 20k for an example? which will effect? 

[Sergii]

MAX(__reserved_ram_start__ + 0x20007588 -0x20000000 , .);