Insufficient PCI Express lines?

[Rovillalob]

So I'm planning to build a PC with a Intel i5-6500 processor, one radeon 480 8GB GPU*, one SSD card and probably one Wi-Fi adaptor (also PCI as far as I now). The problem is that the processor only supports 16 PCIe lines, would that mean that the processor is some sort of bottleneck for the video card? As far as I understand the GPU would be running in a x8 line even if it is on a x16 slot because the rest of the hardware is using lines. The motherboard is a MSI B150 GAMING M3 with: 3 PCI, 2 PCI Express 3.0 x1 and 2 PCI Express 3.0 x16. 

If there are problems with the amount of lines, what processor would you recommend?

If there is no problem, could I add another 480 GPU without CPU or other kind of bottleneck? (Again, if not, what processor/upgrade would you recommend?)

 

*Non referential one: MSI Radeon RX 480 GAMING X, SAPPHIRE Radeon RX 480 NITRO, ROG STRIX RX 480 or any other that makes a considerable difference with the referential one.

[Glenwing]

Just now, Rovillalob said:

So I'm planning to build a PC with a Intel i5-6500 processor, one radeon 480 8GB GPU*, one SSD card and probably one Wi-Fi adaptor (also PCI as far as I now). The problem is that the processor only supports 16 PCIe lines, would that mean that the processor is some sort of bottleneck for the video card? As far as I understand the GPU would be running in a x8 line even if it is on a x16 slot because the rest of the hardware is using lines. The motherboard is a MSI B150 GAMING M3 with: 3 PCI, 2 PCI Express 3.0 x1 and 2 PCI Express 3.0 x16. 

If there are problems with the amount of lines, what processor would you recommend?

If there is no problem, could I add another 480 GPU without CPU or other kind of bottleneck? (Again, if not, what processor/upgrade would you recommend?)

 

*Non referential one: MSI Radeon RX 480 GAMING X, SAPPHIRE Radeon RX 480 NITRO, ROG STRIX RX 480 or any other that makes a considerable difference with the referential one.

There are an additional 20 lanes provided by the Z170 chipset on the motherboard, which are used for all the auxiliary devices, like the ×1 slots on the board, M.2 slots, things like that. Only the main ×16 slots on the board use lanes from the CPU. Even if your graphics card were to run in ×8 mode it wouldn't matter, gaming is relatively light on PCI Express usage, you don't need all 16 lanes for full performance.

[manikyath]

24 minutes ago, Glenwing said:

There are an additional 20 lanes provided by the Z170 chipset on the motherboard, which are used for all the auxiliary devices, like the ×1 slots on the board, M.2 slots, things like that. Only the main ×16 slots on the board use lanes from the CPU. Even if your graphics card were to run in ×8 mode it wouldn't matter, gaming is relatively light on PCI Express usage, you don't need all 16 lanes for full performance.

once again the glenwing nails it.

 

note: always plug your wifi cards and the like into a pcie 1x physical slot, unless you are not given the option to. (like mobo's with a PLX chip that have all 16x slots, which are a bit of a rare find )

[Joe007destroyer]

You are very concerned about the RX 480 taking all the PCI slots you could also opt for a USB wireless adapter, although not that great as a PCI line one

[Rovillalob]

Z170 chipset? Thats ASUS right? Well I guess that it makes no difference, thanks for the answers