PCIe vs. PCIe x16

[etienne_marais]

I just want to check, according to what I google you can use a PCIe 1.0 card in a PCIe 2.0 slot, but you can't use a x16 card in a 'normal' slot ? Is this correct ?

 

[ponder]

PCI Express ×4
PCI Express ×16
PCI Express ×1
PCI Express ×16
Legacy PCI (32-bit)

A card with more lanes won't fit into a lower lane slot, x1 will fit all pcie slots, the x4 will fit the x4 & x16
If you have open ended slots other cards will fit.
https://www.youtube.com/watch?v=u_9eUbBU1cY
https://www.youtube.com/watch?v=Dvxcnfx3Bm0

 

[etienne_marais]

PCI Express ×4
PCI Express ×16
PCI Express ×1
PCI Express ×16
Legacy PCI (32-bit)

A card with more lanes won't fit into a lower lane slot, x1 will fit all pcie slots, the x4 will fit the x4 & x16

Thanks ponder, that's what I needed to know.

 

[ponder]

Thanks ponder, that's what I needed to know.

Just check I updated my post above, it's possible but not pretty.

 

[TJ99]

PCIe 1.0 and 2.0 refer to the internal speeds, it has nothing to do with the card lengths. You can have a X16 1.0 and a X16 2.0.

 

[etienne_marais]

PCIe 1.0 and 2.0 refer to the internal speeds, it has nothing to do with the card lengths. You can have a X16 1.0 and a X16 2.0.

Thanks

 

[ponder]

PCIe 1.0 and 2.0 refer to the internal speeds, it has nothing to do with the card lengths.

Nobody said it did & the OP even stated they are forward compatible. He asked about pcie vs pcie x16, by pcie I understood x1.

 

[TJ99]

Nobody said it did & the OP even stated they are forward compatible. He asked about pcie vs pcie x16, by pcie I understood x1.

Then you understood wrong. He clearly said 1.0 and 2.0. It's worth mentioning that those are the different standards, not slot sizes. Just like with USB 1.0 and 2.0, you have different connectors for each.

 

[Johnatan56]

Then you understood wrong. He clearly said 1.0 and 2.0. It's worth mentioning that those are the different standards, not slot sizes. Just like with USB 1.0 and 2.0, you have different connectors for each.

He asked both from what I read.

 

[GoofySmurf]

I just want to check, according to what I google you can use a PCIe 1.0 card in a PCIe 2.0 slot, but you can't use a x16 card in a 'normal' slot ? Is this correct ?

You can run a 16x card on a 1x port you will just have to cut pieces of your gpu pcb. It will also only run at 1x which kinda beats the point.

You can run it on 2x, 4x, 8x, 16x ports with no issue and vice versa. You can slot a pcie 1x card into a pci 16x slot and it will work 99% of the time.

However you cannot plug normal pci cards into any pcie slot as far as I know.

 

[Pada]

PCIe 1.1 & PCIe 2.0 are backwards/forward compatible, but be careful for when a graphics card is PCIe 2.1 or higher, because then it may want to draw more power from the motherboard (which will require PCIe 2.1 or newer).

You won't have any issues if your motherboard has PCIe 3.0 and your graphics card is PCIe 1.1