[主機板] Motherboard PCIe Lanes

Hi,

I m looking at a Z170 motherboard which has 3 PCIe X16 slots that are configured this way:
16/0/0 or 8/8/0 or 8/8/4.

My question is:  if a card is installed at the 3rd PCIe X16 slot (which can run at a maximum of 4X), will the motherboard automatically configure the bandwidth to 8/8/4 even though no card is installed at the second slot. The first slot will be occupied by a graphics card.

Thanks.

Hi,

I m looking at a Z170 motherboard which has 3 PCIe X16 slots that are configured this way:
16/0 ...
hknewbytech 發表於 2015-9-11 22:48


好視乎你咩板,有三或四條 PCIEx16 slot 的底板多數情况其中一條 PCIEx16 都係駁 PCH ,即不用分其它  x16  的 lanes。但有可能同其它  x1 slots 分 lanes 。

TOP

slot 1 - 16x (direct connect to cpu)
slot 3 - 4X (connect to chipset)

TOP

回覆 3# computer1975


    Yeah, you are right. Looking at the block diagram of the motherboard, it is indeed what you said:
1st 2 PCIe X16 slots are connected to the CPU and the 3rd one is connected to the chipset.

So I guess when I insert a card (not a graphics card) in slot 3, the system will not configure the first 2 slots as X8/x8 but reserve the full x16 to slot 1 in a single card setup.

Thanks guys.

TOP