F5F Stay Refreshed Hardware Desktop PCIe 4.0 and 3.0

PCIe 4.0 and 3.0

PCIe 4.0 and 3.0

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Helik3
Member
76
03-20-2019, 04:13 AM
#1
Hi, asking a colleague. Would a PCIe 3.0 GPU fit on a motherboard supporting PCIe 4.0? I understand that a PCIe 4.0 GPU can run on a board with PCIe 3.0, which caps performance at the PCIe 3.0 capabilities. Looking forward to your reply. Best regards, Martin
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Helik3
03-20-2019, 04:13 AM #1

Hi, asking a colleague. Would a PCIe 3.0 GPU fit on a motherboard supporting PCIe 4.0? I understand that a PCIe 4.0 GPU can run on a board with PCIe 3.0, which caps performance at the PCIe 3.0 capabilities. Looking forward to your reply. Best regards, Martin

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demon_chiken
Member
51
03-20-2019, 05:37 AM
#2
PCI Express 4.0 supports both forward and backward compatibility.
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demon_chiken
03-20-2019, 05:37 AM #2

PCI Express 4.0 supports both forward and backward compatibility.

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ItsVince_
Junior Member
44
03-20-2019, 01:53 PM
#3
PCIe supports backward compatibility from its earliest days. I'm able to use a recent Radeon VII in PCIe 3.0 slots, PCIe 2.0 slots, and with a PCIe or PCIe 4.0 board it would work too. The main variation is performance. A PCIe 2.0 x16 might limit my card, PCIe 3.0 x16 won't restrict any GPU available today (even the 2080 Ti or Titan RTX), and PCIe 4.0 x16 is probably unnecessary for current hardware.
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ItsVince_
03-20-2019, 01:53 PM #3

PCIe supports backward compatibility from its earliest days. I'm able to use a recent Radeon VII in PCIe 3.0 slots, PCIe 2.0 slots, and with a PCIe or PCIe 4.0 board it would work too. The main variation is performance. A PCIe 2.0 x16 might limit my card, PCIe 3.0 x16 won't restrict any GPU available today (even the 2080 Ti or Titan RTX), and PCIe 4.0 x16 is probably unnecessary for current hardware.

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berke1010
Member
147
03-21-2019, 07:53 AM
#4
Thank you for your prompt reply, I'll inform him immediately.
B
berke1010
03-21-2019, 07:53 AM #4

Thank you for your prompt reply, I'll inform him immediately.