Z820 + vega 64

[vike_plikea]

I bought a Hp z820 with 2x e5-2667 v2 processors and I want to install radeon vega 64.

The PSU is 1125 W.

I connected the gpu in the firs PCie slot with 1 molex ( 2x4 pin) to 8 pin  and a 6pin to 8 pin cables.

The LED on the GPU are working but the fans are not and it does not send signel to the monitor.

I have tryed to update the Bios, tried to change from legacy to Efi and still no results.

I also have tried to conect the GPU with a 1x6 pin to 2x 8 pin cable.

Already have read all the forums but there is not much on the internet about this combination.

Please help a desperate man in need.

Or I will set the workstation on fire :)))

P.S. when I try to turn it on it gives me the 6 beep code error.

[old_geekster]

@vike_plikea , welcome to the forum.

Thank you for posting in the Forums.  This will allow more members to help you.

Who is the manufacturer of the video card?  A link to it will be a big help.  It will allow us to see all of the specifications.  The Vega 64 cards that I reviewed had 2 x 8-pin connectors.  It requires 275W.  If I understand what you are saying, you used a connector that was comprised of 2x4- pins and a 6+2-pins to make the 2x8-pins.  Is this correct?

The 6-beeps are pre-video card errors.  This means that the card is not being accessed.

[vike_plikea]

Hi @Old_geekster,

The video card that I bought is a red devil powercolor.

https://www.ebay.co.uk/itm/AMD-VEGA64-POWERCOLOR-Red-Devil-8GB-HBM2-2x-HDMI-2x-DP-NEU-BULK/323665571...

The first conection that I have used was a 1x 6 pin to 2x 8 pin then I thought it does not have enough power.

https://www.emag.ro/cablu-pci-express-6-pini-la-2-x-8-pini-m-t-delock-83433/pd/D3R4YMBBM/

The cable alowes to use 6 pins and 2 separately (look at the images in the link above) so I tryed to conect 2x 6 pins conections from the PC directly and the 2 x 2 pins from the cable that I bought, that means that I have used all 3x 6 pins cables from the PC, 2 directly to the video card and 1 via the adapter to fill al the holes of the GPU  (I know it sound crazy but I wanted to give it a try ).

After that I bought another cable 2x4 pins to 1x8 pins. 

https://www.emag.ro/cablu-alimentare-pci-express-8-pini-delock-82397/pd/DQQ4YMBBM/

So I connected this new cable and the second 8 pin I have connected with the previous cable.

Somebody told me to try a 1x6 pins to 1x 8 pins directly so I already ordered 2 of them.

https://www.emag.ro/cablu-active-adaptor-alimentare-placa-video-pci-e-6-pini-mama-la-8-pini-tata-ext...

And just in case another cable:

https://www.emag.ro/adaptor-alimentare-placa-video-pci-e-8-pini-6-2-de-la-1-x-sata-20cm-tzz71223661/...

Should I return this video card and buy one with just one cooler that requires less power?

[old_geekster]

WoW!! @vike_plikea .

You have a great card, but I don't believe any of your choices will work.  You simply aren't drawing enough power (275W) according to what I have read on other cards similar to yours.  Your PSU (1125W) has plenty of power, but you need the two 8-pin connectors.  One lead split into two connectors is not enough.  I believe that there may be a diagram of the power leads for the PSU in the Maintenance and Service Guide.  Here is what it says on Page 35, in the section titled Graphics cards: 1125 W Gold, 90% efficient, wide-ranging, active Power Factor Correction, three auxiliarydongles on three separate 12V rails, ERP 0.5W, Built-in-Self Test (BIST).