[SOLVED] Smart Access Memory not Available in RX 6600 XT ?

Ryflick

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Jun 23, 2019
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Hi all, wanna ask about this issue I'm currently having.
The "Smart Access Memory" isn't available when I checked on my Radeon Software, how to fix this?
I've enabled Resizable BAR & set everything through with all the guides from internet but with no luck
I also already updated my BIOS to the latest available yet still no luck

My specs :
Motherboard ASUS PRIME B450M-A II
Processor AMD Ryzen 5 5600
RAM PANRAM DDR4 3200MHz 2x8GB-kit
SSD ADATA SU650 480GB SATA III
PSU Enlight Black Silver 550W Semi-Modular 80+ Bronze
 
Solution
I already turned off CSM Compatibility Mode, my BIOS is set on UEFI mode by default, Above 4G Decoding is enabled
but the confusing part is "Resizable BAR" only have 2 options : Disabled & Auto, I can't force it set as "Enabled"

Is there something I'm missing?

Edit :
I provided GPU-Z PCIe Resizable BAR, it shows Enabled but it's only using 256MB, is it okay with this? Or is there any fix to increase the memory on Resizable BAR?

xcvBam0.png
gpu-z shows it enabled, pcie device can have 6 BARs (base adress registers), they all serve different purposes, framebuffer memory space on AMD uses BAR0 while on nVidia its BAR1 (BAR0 nvidia = MMIO), since you have AMD card and your BAR0 says 8GB instead of 256MB...

Ryflick

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Jun 23, 2019
52
1
4,535
steamcommunity.com
here are some bios settings that needs to set before SAM gets available
bios needs to be in UEFI mode, CSM compatibility mode needs to be turned off
above 4G needs to be enabled
resizeable bar also needs to be enabled
I already turned off CSM Compatibility Mode, my BIOS is set on UEFI mode by default, Above 4G Decoding is enabled
but the confusing part is "Resizable BAR" only have 2 options : Disabled & Auto, I can't force it set as "Enabled"

Is there something I'm missing?

Edit :
I provided GPU-Z PCIe Resizable BAR, it shows Enabled but it's only using 256MB, is it okay with this? Or is there any fix to increase the memory on Resizable BAR?

xcvBam0.png
 
Last edited:
I already turned off CSM Compatibility Mode, my BIOS is set on UEFI mode by default, Above 4G Decoding is enabled
but the confusing part is "Resizable BAR" only have 2 options : Disabled & Auto, I can't force it set as "Enabled"

Is there something I'm missing?

Edit :
I provided GPU-Z PCIe Resizable BAR, it shows Enabled but it's only using 256MB, is it okay with this? Or is there any fix to increase the memory on Resizable BAR?

xcvBam0.png
gpu-z shows it enabled, pcie device can have 6 BARs (base adress registers), they all serve different purposes, framebuffer memory space on AMD uses BAR0 while on nVidia its BAR1 (BAR0 nvidia = MMIO), since you have AMD card and your BAR0 says 8GB instead of 256MB, than all should be fine
 
Last edited:
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Solution

Ryflick

Reputable
Jun 23, 2019
52
1
4,535
steamcommunity.com
gpu-z shows it enabled, pcie device can have 6 BARs (base adress registers), they all serve different purposes, framebuffer memory space on AMD uses BAR0 while on nVidia its BAR1 (BAR0 nvidia = MMIO), since you have AMD card and your BAR0 says 8GB instead of 256MB, than all should be fine
Oh wow okay, so it is working fine then. Thank you so much for the explanation!