only 3 GB show on msi afterburner for my sapphire r9 390 nitro 8 GB why ?

sosolola

Reputable
Nov 1, 2014
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I'm trying to monitor my video ram and pc ram while gaming
when when going to settings tab and monitor it show
max limit for memory as 3072 only and for ram as 8192 only
I have 8 gb for my sapphire
and 16 gb ram

any wrong with my hardwares if not
can you tell me what exact numbers do I need to put in
memory max limit
and ram max limit
and does it safe to change these ?