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MP 1,1-5,1 VEGA 56 with eVGA powerlink

RX Vega 56 Dragon has in 8pin + 6pin power-setup

scenario1 (in use)
1mini 6 pin to 8 pin cable
1mini 6 pin to 6 pin cable

scenario2 (proposed by @riggieri)
2mini 6 pin to 8 pin cable + (extension/splitter) 8pin-female to 2x6+2pin

scenario3
2mini 6pin to 8 cable
2sata to 6pin cable adapter (via superdrive-bay)


since scenario1 seems function,
wonder what the additional-security benefit of scenario 2 would be?
scenario3 seems to involve losing the superdrive, which i could afford, but is not optimal, as i hoped to install a bluray internal.

pixlas not taking into account, thanks.
 
mrkapqa said:
what noticed:

RedDragon RX Vega 56

1. this card is quite silent.
2. DP to VGA adapter i have would not function on both DP port (only for bootscreen, but not on desktop) > maybe another Adapter would be needed (active DP to Vga?)
3. Luxmark 3.1 is similar on Windows 11 (nearly 29,000) and MacOS Monterey (plus 27,000) against only 13.000 of RX 580;
however, Geekbench5 OpenCL on Windows 11 around 72,000 versus only 50,000 on MacOS, so i suppose i have a "handbraked" OC setup, which is not optimal, but OK.

the proper cable setup desired or needed leaves me still bit confused,
but should get clarification.
Click to expand...
GB OCL test is also affected by that locked HBM bandwidth.

For Vega 56, I believe the follow code should works
Code: 
<key>DeviceProperties</key>
    <dict>
        <key>Add</key>
        <dict>
            <key>PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)</key>
            <dict>
            <key>@0,name</key>
            <string>ATY,Kamarang</string>
            <key>@1,name</key>
            <string>ATY,Kamarang</string>
            <key>@2,name</key>
            <string>ATY,Kamarang</string>
            <key>@3,name</key>
            <string>ATY,Kamarang</string>
            <key>AAPL00,DualLink</key>
            <data>AQAAAA==</data>
            <key>ATY,Card#</key>
            <string>109-D000A1-01</string>
            <key>ATY,Copyright</key>
            <string>Copyright AMD Inc. All Rights Reserved. 2005-2019</string>
            <key>ATY,DeviceName</key>
            <string>Vega 56</string>
            <key>ATY,Rom#</key>
            <string>113-D0500300-102</string>
            <key>ATY,EFIVersion</key>
            <string>016.001.001.000.008771</string>
            <key>ATY,FamilyName</key>
            <string>Radeon Pro</string>
            <key>CAIL_EnableLBPWSupport</key>
            <integer>0</integer>
            <key>CAIL_EnableMaxPlayloadSizeSync</key>
            <integer>1</integer>
            <key>CFG_CAA</key>
            <integer>0</integer>
            <key>CFG_FB_LIMIT</key>
            <integer>0</integer>
            <key>CFG_FORCE_MAX_DPS</key>
            <integer>1</integer>
            <key>CFG_GEN_FLAGS</key>
            <integer>0</integer>
            <key>CFG_NO_MST</key>
            <integer>0</integer>
            <key>CFG_NVV</key>
            <integer>2</integer>
            <key>CFG_PAA</key>
            <integer>0</integer>
            <key>CFG_PULSE_INT</key>
            <integer>1</integer>
            <key>CFG_TPS1S</key>
            <integer>1</integer>
            <key>CFG_TRANS_WSRV</key>
            <integer>1</integer>
            <key>CFG_UFL_CHK</key>
            <integer>0</integer>
            <key>CFG_UFL_STP</key>
            <integer>0</integer>
            <key>CFG_USE_AGDC</key>
            <integer>1</integer>
            <key>CFG_USE_CP2</key>
            <integer>1</integer>
            <key>CFG_USE_CPSTATUS</key>
            <integer>1</integer>
            <key>CFG_USE_DPT</key>
            <integer>1</integer>
            <key>CFG_USE_FBC</key>
            <integer>0</integer>
            <key>CFG_USE_FBWRKLP</key>
            <integer>1</integer>
            <key>CFG_USE_FEDS</key>
            <integer>1</integer>
            <key>CFG_USE_LPT</key>
            <integer>1</integer>
            <key>CFG_USE_PSR</key>
            <integer>0</integer>
            <key>CFG_USE_SCANOUT</key>
            <integer>1</integer>
            <key>CFG_USE_SRRB</key>
            <integer>0</integer>
            <key>CFG_USE_STUTTER</key>
            <integer>1</integer>
            <key>CFG_USE_TCON</key>
            <integer>1</integer>
            <key>device_type</key>
            <string>ATY,KamarangParent</string>
            <key>hda-gfx</key>
            <string>onboard-1</string>
            <key>model</key>
            <string>AMD Radeon Pro Vega 56</string>
            </dict>
        </dict>
    </dict>

Anyway, that Luxmark score is a prove that your Vega56 is performing, and able to deliver 2x the RX580 can do.
 
Hi,

I have a 5700XT with 8-pin + 6-pin power input. I plan to use it with in my newly-acquired 5,1.

In my 'box of junk', I found a new-in-box EVGA Powerlink.

I had previously planned on buying a mini 6-pin to 8-pin and mini 6-pin to 6-pin for about $6 each. Since I have a PowerLink, should I just by two mini 6-pin to 6-pin and let the PowerLink do the balancing?

Not sure what benefits the PowerLink provides in my situation, other than cosmetics?
 
BeatCrazy said:
Hi,

I have a 5700XT with 8-pin + 6-pin power input. I plan to use it with in my newly-acquired 5,1.

In my 'box of junk', I found a new-in-box EVGA Powerlink.

I had previously planned on buying a mini 6-pin to 8-pin and mini 6-pin to 6-pin for about $6 each. Since I have a PowerLink, should I just by two mini 6-pin to 6-pin and let the PowerLink do the balancing?

Not sure what benefits the PowerLink provides in my situation, other than cosmetics?
Click to expand...
Definitely power it via the PowerLink if you already has that on hand.

PowerLink mainly has three functions on the cMP.

1) Balance the power draw between mini 6pins. This is the most important function in this case.
2) Smooth out the power spike. This is something "nice to have", usually not a problem even without it.
3) Cable management. This is more for personal preference.
 
h9826790 said:
Definitely power it via the PowerLink if you already has that on hand.

PowerLink mainly has three functions on the cMP.

1) Balance the power draw between mini 6pins. This is the most important function in this case.
2) Smooth out the power spike. This is something "nice to have", usually not a problem even without it.
3) Cable management. This is more for personal preference.
Click to expand...
Excellent! So should I grab two mini 6-pin to 6-pins? No real need to go with 8-pins, right?
 
h9826790 said:
Check your EVGA PowerLink input. If that's 8pin connector, get mini 6pin to 8pin. If 6pin, get 6pin.
Click to expand...
The PowerLink input is dual 8-pin, but it supports 6-pin input. Wasn't sure if there was some sort of balancing going on inside the PowerLink to make the input type a non-factor. That was my takeaway from reading some of @zedex's comments in this thread.
 
Technically, the pin2 on a 6pin connector is optional. Some 6pin cable may not even has pin2 connected.

Therefore, whenever there is a 8pin, connect all 8pins, make sure pin 2 should be activated correctly.
 
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