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4770K: number of PCI-e lanes

post #1 of 3
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1. How many PCI-e lanes does a core i7 4770K have?

2. Can it run an SLI configuration of dual gtx-780s and 16x each?
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post #2 of 3
By default, the 4770K (and its Z87 chipset) has 16 PCIe 3.0 lanes.

To run SLI with two cards each at PCIe 3.0 x16, you'll need a Z87 motherboard that has an additional "PLX" chip. Such boards include:

ASRock Z87 Extreme9/ac
Asus Z87-WS
Asus Maximus VI Extreme
Gigabyte Z87X-OC Force
Gigabyte G1.Sniper 5
MSI Z87 XPower

Note: It's really not necessary to get a PLX-equipped motherboard if you're going to run just two video cards, as PCIe 3.0 x8 is sufficient for the GTX 780 as it is.
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Julia
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post #3 of 3
The Z87 platform supports 2xPCIE x16 lanes as long as the motherboard has an additional PLX chip, however for 780 you won't see a significant performance increase if you run both at 8x, 8x as it doesn't necessarily need the extra bandwidth.

Sam,
Member of the LinusTechTips.com Intel Response Squad.
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