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  1. #1
    Old guy
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    Default Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    I am getting into an area where my lack of gaming experience is a definite handicap and I would appreciate some advice.
    My current PC has a Gigabyte Z87 - HD3 motherboard. The Video Card is a GTX 1060 and the frps I am getting in MS Flight Sim 2020 is unacceptably low.
    I have a choice of maybe installing a far more capable Video card but my problem is that the cards I am considering are all PCIE 4, the current one is a PCIE 3 card. I believe a PCIE 4 card will be backward compatible however I could be wrong and if so would prefer to cut my losses and go for a new PC rather than waste a $K or so on a card that would not give me any advantage. I know some of you are or have been into gaming and I would value any opinions you care to provide.

  2. #2
    Senior Member piroska's Avatar
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    Yes you can, it's backwards compatible.
    If the card is high spec enough it would be fine.

    But MSFS has always been a high end CPU game too.

    recommended:
    Radeon RX 570
    Nvidia GTX 700

    Ideal:
    Radeon VII
    Nvidia RTX 2080
    Ex-pctek

  3. #3
    Old guy
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    Thanks for sharing your thoughts piroska. It'll help me to make up my mind. Incidentaly my current card is a GTX 1060 and Flight Sim does not get above 15 fps with the GPU at 90 - 98%. The rest of my PC is still quite happy though.
    Last edited by CliveM; 31-01-2021 at 09:29 AM.

  4. #4
    amateur expert dugimodo's Avatar
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    Even the fastest current graphics cards barely get any advantage from PCIE 4 over PCIE 3, so little it's not worth worrying about so that isn't an issue.

    However it's quite possible your CPU or RAM is holding you back, you are above the recommended GPU already but not the CPU. What are the rest of your specs? what CPU, what RAM ?
    The risk is buying a new graphics card won't help you at all.

    https://www.republicworld.com/techno...uirements.html
    Ryzen 2700X, 16Gb DDR4RAM, 512GB M.2 NVME SSD, MSI GTX1070

  5. #5
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    Quote Originally Posted by dugimodo View Post
    Even the fastest current graphics cards barely get any advantage from PCIE 4 over PCIE 3, so little it's not worth worrying about so that isn't an issue.

    However it's quite possible your CPU or RAM is holding you back, you are above the recommended GPU already but not the CPU. What are the rest of your specs? what CPU, what RAM ?
    The risk is buying a new graphics card won't help you at all.

    https://www.republicworld.com/techno...uirements.html
    Processor is an Intel i7 - 4770CPU @ 3.40GHz and I have 16.0 GB of installed Ram
    While running the game the Performance widget shows the CPU at around 25% and the RAM at around 35%. The GPU however is maxed right out.
    Thanks for your comments Dugi.

  6. #6
    Senior Member piroska's Avatar
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    Buy this:

    Nvidia GeForce RTX 3090
    or

    AMD Radeon RX 6900 XT
    Ex-pctek

  7. #7
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    Quote Originally Posted by piroska View Post
    Buy this:

    Nvidia GeForce RTX 3090
    or

    AMD Radeon RX 6900 XT
    The RTX 3090 is the one I have on my short list at the moment. Thanks again for the advice.

  8. #8
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    FWIW I have ended up installing a Gigabyte GeForce RTX 3070 card its size suits my case and the price suited my wallet. It appears to be a good choice and is significantly better running MS Flight Sim 2020 than the 1060 card it replaced giving a fps count up to 95fps.

  9. #9
    Computer "Specialist" Agent_24's Avatar
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    Default Re: Is a PCIE 4 Video card - OK on a PCIE 3 Motherboard ?

    Some older PCIE 1 motherboards had problems with PCIE 2 cards. I'm not aware of any major issues beyond that.

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