ASROCK 890GX EXTREME4 User Manual page 61

Share Memory
This allows you to set share memory feature. The default value is [Auto].
Configuration options: [Auto], [32MB], [64MB], [128MB], [256MB] and
[512MB].
Onboard HDMI HD Audio
This allows you to enable or disable the onboard HDMI HD Audio in AMD
890GX. If you use Dual-link DVI monitor, please set this item to [Disabled].
Surround View
This allows you to enable or disable the Surround View feature or Hybrid
CrossFireX feature.
TM
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