Opencore Catalina/Ryzen install: ram speed reported only half the actual ram speed

[AinurElf]

Hello,

I have this system:

Bootloader: OpenCore 0.5.2
MacOS: Catalina 10.15.1
CPU: Ryzen 6 2600x
Mainboard: Asrock B450M Pro4
RAM: G.Skill DDR4 2166 Mhz Dual Channel 16 GB (2 slots of 8 GB) ( correctly seen in BIOS, Windows etc)

Under MacOs, everything is working fine, all the 16GB are shown in correct slots, except ram speed is reported as 1067Mhz in the "About Mac" section.v

 

This is what system report says about one of the slots (both are detected):
 

P0 CHANNEL A/DIMM 1:

  Size: 8 GB

  Type: DDR4

  Speed: 1067 MHz

  Status: OK

  Manufacturer: 04=>

  Part Number: F4-3000C16-8GISB

  Serial Number: -

When I had clover/mojave I had to manually set the ram speed in the smbios/memory section of clover configurator to get a correct reading with the following entries:

CLOVER ENTRIES, NOT OPENCORE!

<key>Memory</key>
        <dict>
            <key>Modules</key>
            <array>
                <dict>
                    <key>Frequency</key>
                    <integer>2133</integer>
                    <key>Size</key>
                    <integer>8192</integer>
                    <key>Slot</key>
                    <integer>1</integer>
                    <key>Type</key>
                    <string>DDR4</string>
                    <key>Vendor</key>
                    <string>G.Skill</string>
                </dict>
                <dict>
                    <key>Frequency</key>
                    <integer>2133</integer>
                    <key>Size</key>
                    <integer>8192</integer>
                    <key>Slot</key>
                    <integer>3</integer>
                    <key>Type</key>
                    <string>DDR4</string>
                    <key>Vendor</key>
                    <string>G.Skill</string>
                </dict>
            </array>
        </dict>

END CLOVER ENTRIES

 

 

I didn't find a way to set this in opencore.

In opencore PlatformInfo/Generic I have iMacPro1,1 selected.

Any help appreciated to get the correct ram speed (2133) in MacOs.
by the way: if I overclock the ram in the BIOS to 3000 via XMP profile, "About my mac" shows 1500 Mhz, so it really shows half of the actual speed.

 

 

Edited November 25, 2019 by AinurElf

[ec-blaster]

I have FX 8320 working with Catalina 10.15.2 and it happens the same to me. I don't know how to force it to recognize full RAM speed