Quad SLI Question

[CalumT]

Although I'm not considering doing it, I'm confused as to how this works.

 

An Asus Z97 WS board, capable of running quad SLI at 8x, would use 32 PCI lanes, but I'm looking at 4790k (what I thought to be one of the highest end CPUs on the LGA1150 socket) and it only has 16 PCI lanes. How could you run quad SLI using it?

 

Just curious and confused!

Cheers

[Godlygamer23]

You can't with that CPU without a PLX chip on the motherboard. That's how it works. Haswell doesn't have enough PCIe lanes in the controller to support triple or quad SLI.

[skullbringer]

Although I'm not considering doing it, I'm confused as to how this works.

 

An Asus Z97 WS board, capable of running quad SLI at 8x, would use 32 PCI lanes, but I'm looking at 4790k (what I thought to be one of the highest end CPUs on the LGA1150 socket) and it only has 16 PCI lanes. How could you run quad SLI using it?

 

Just curious and confused!

Cheers

 

many "WS" boards use plx chips, that basically split the pcie lanes provided by the cpu and interpolating 32 lanes with 16 connections at the cost of latency.

[CalumT]

many "WS" boards use plx chips, that basically split the pcie lanes provided by the cpu and interpolating 32 lanes with 16 connections at the cost of latency.

Makes sense! Cheers