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PCIe 4.0 GPU on a PCIe 3.0 motherboard?

bluecew
By bluecew
in Graphics Cards
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Go to solution Solved by xentropa,

PCIe has had backwards compatibility since its inception.  No reason to stop it now I would imagine.

 

Only drawback of putting a pcie 4 device in a 3 slot is that it will run 3 speeds which should be more than enough anyways.

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I am going to install the AMD Radeon RX 5600XT but it is a PCIe 4.0 card while my motherboard is a PCIe 3.0. Is it still compatible? What are the negative effects?

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  • Solution

PCIe has had backwards compatibility since its inception.  No reason to stop it now I would imagine.

 

Only drawback of putting a pcie 4 device in a 3 slot is that it will run 3 speeds which should be more than enough anyways.

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Yes it's still compatible. I've used modern gpu's on pcie 2.0 slots and they work fine. 

 

AMD would severely limit their sales if their new cards only worked on pcie 4.0 compatible motherboards. 

 

Only potential draw back woukd be theoretical transfer speeds but I doubt a 5600xt would saturate pcie 3.0 bandwidth anyway. 

CPU - Ryzen 7 5800x3D |  GPU - RTX 3080 TUF OC | Motherboard - ASUS TUF X570 | RAM - Patriot Viper Blackout 32GB 3200MHz | Case - InWin 805 | Boot Drive - Corsair MP600 PCIe 4.0  Storage - 2 x 1TB SSD's & 1 500GB SSD | PSU - Seasonic Focus Gold 1000w | Display - ASUS TUF VG27WQ Curved 1440P 165Hz | Cooling - ASUS TUF LC240 AIO + 5 aRGB Fans

 

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