How many PCIE Lane for my Display Card

[Isvh_5]

Hello,

I currently have 1080 ti and M.2 intel 600p in my PC, which I know my 7700 have a total 16 PCIE lane. My question is, what is the distribution of PICE lane on my display card and M.2 SSD and what is the distribution of PCIE If i add 1 more display card in my computer ( I want to add 1 more display to increase rendering performance).

My PC figure:

Intel 7700
ASUS Z270G
Intel 600P 1 tb
Zotac 1080 ti FE
PSU SliverStone 700W

Thank you very much.

(PS: sorry for my English is not good enough)

 

[Nick501]

Adding another GPU to the computer will increase the performance of the computer in general, while PCI lanes are spread out over the devices that are using them there really shouldn't be a bottleneck there, and if there is it won't be very visible, but bear in mind, that you are going to be shelling out the money for another 1080 ti so I would first take the time to look over how much you need the added performance versus what you already have

Also add up all of the TDP levels of your current parts to make sure that you have enough power, I think your 700 should be fine, but you should always check before making a purchase.

 

[raisonjohn]

For the Asus ROG Strix Z270G Gaming,

From CPU (i7-7700) at 16x PCIe3.0 Lanes:

16x Lanes --> Two PCIe3.0 x16 slots at either x16/x0 or x8/x8 (upper x16 slot runs in full x16 with the lower slot unoccupied; upper slot runs in x8 when lower slot is occupied, which will also run in x8)

From Chipset (Z270) at 24x PCIe3.0 Lanes:

4x Lanes --> First M.2 slot (the one in front)
4x Lanes --> Second M.2 slot (the one at the back)
2x Lanes --> USB3.1 Gen2 header (at mid-board for the front panel ports)
2x Lanes --> USB3.1 Gen2 ports (at the rear panel)
1x Lane --> First PCIe3.0 x1 slot
1x Lane --> Second PCIe3.0 x1 slot
1x Lane --> Wi-Fi/Bluetooth
1x Lane --> Intel I219V LAN Controller
4x Lanes --> DMI3.0 link between CPU and Chipset
4x Lanes --> unused

This means, with your current setup (GTX 1080Ti and Intel 600p), you are using 16x Lanes from your CPU (for the GTX 1080Ti plugged in the top GPU slot) and 4x Lanes from your Chipset (for the Intel 600p plugged in any of the M.2 slot in PCIe3.0 x4 mode).

If you plug in two GPUs/Display cards into the two GPU slots (PCIe3.0 x16), both of them will run in PCIe3.0 x8 speeds (x8/x8) as they are both controlled by the CPU's 16x PCIe lanes. Your M.2 slots and all other slots are unaffected by this as they are all controlled by the Chipset's PCIe lanes.