EP2C621D12 WS questions

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hi,

I'm reviewing possible motherboards for a build and have a few questions regarding the EP2C621D12 WS[URL=https://www.asrockrack.com/general/productdetail.asp?Model=EP2C621D12%20WS#Specifications]EP2C621D12 WS[/URL] and its use with 4 and possibly (in the future) 5 GPUs.

Q1) I've read somewhere that a firmware update of the board is necessary when adding more than 4 or up to 7 GPUs to this system. Is this true?

Q2) Does this board realistically support 4 GPUs in the first place? The manual shows 2x 8-pin ATX12V connectors for the CPU sockets. However there's no additional PCIe x6 or x8 receptacles on the board. The 12V lines for a single PCIe x16 slot can draw up to 5.5A (66W), meaning 4 cards could in theory draw up to 22A (realistically less but may spike close to this at times). The 24 pin ATX connector has 2x 12V lines each of which I think are safely rated up to 6A or a total of 12A which is well under the possible max draw of 4 cards.

I'm not using the GPUs for mining (otherwise I could use separately powered risers from a 2nd PSU and avoid the possible issue in Q2)

Thanks for any help

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
neoavalon Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 15 Jun 2019 Status: Offline Points: 10	Post Options Post Reply Quote neoavalon Report Post Thanks(0) Quote Reply Topic: EP2C621D12 WS questions Posted: 15 Jun 2019 at 2:45am
	Hi, I'm reviewing possible motherboards for a build and have a few questions regarding the EP2C621D12 WS[URL=https://www.asrockrack.com/general/productdetail.asp?Model=EP2C621D12%20WS#Specifications]EP2C621D12 WS[/URL] and its use with 4 and possibly (in the future) 5 GPUs. Q1) I've read somewhere that a firmware update of the board is necessary when adding more than 4 or up to 7 GPUs to this system. Is this true? Q2) Does this board realistically support 4 GPUs in the first place? The manual shows 2x 8-pin ATX12V connectors for the CPU sockets. However there's no additional PCIe x6 or x8 receptacles on the board. The 12V lines for a single PCIe x16 slot can draw up to 5.5A (66W), meaning 4 cards could in theory draw up to 22A (realistically less but may spike close to this at times). The 24 pin ATX connector has 2x 12V lines each of which I think are safely rated up to 6A or a total of 12A which is well under the possible max draw of 4 cards. I'm not using the GPUs for mining (otherwise I could use separately powered risers from a 2nd PSU and avoid the possible issue in Q2) Thanks for any help