What is Max # of PCI Express Lanes

[krunky11]

Hi i have: Intel I7 5930K BOX

 

It has 40 MAX OF PCIE LANES

 

I want to know what this means. Thanks.

 

Can i have 4-way sli GTX 980 Ti?

 

 

Thanks for help.

[HoiDaniel]

Hi i have: Intel I7 5930K BOX

 

It has 40 MAX OF PCIE LANES

 

I want to know what this means. Thanks.

 

Can i have 4-way sli GTX 980 Ti?

 

 

Thanks for help.

The 4 way SLI will probably run in x8. 4*8 is 32.

You'll be fine, even when you add another pci-e card.

[Alurit]

If I'm correct you need 8 PCIe lanes per nvidia card, so you need at least 32 PCIe lanes for 4 way sli. so you are ok. adding things like m.2 PCIe ssd's will use 4 lanes, but the mobo has some lanes as well. with no pci ssd's, eSATA etc drives you are probably going to run in 16,8,8,8, if you have those then 8,8,8,8 but there's no real difference

[HoiDaniel]

To further explain this. You have PCI-e slots with x16 (16 lanes), x8, x4 and x2. Just add everything up.

[krunky11]

The 4 way SLI will probably run in x8. 4*8 is 32.

You'll be fine, even when you add another pci-e card.

But the card is rated for ×16. Will be performance decreased and if I would be better off with 2-way SLI. 2*16=32

[HoiDaniel]

But the card is rated for ×16. Will be performance decreased and if I would be better off with 2-way SLI. 2*16=32

SLI will run in x8 either way. PCI-e x16 doesn't make any difference, nor does x4

Just keep in mind it's better to buy 1 good GPU in stead of 2 average GPU's in SLI.

AND: don't do more than 2-way SLI. The 3rd and 4th are not utilized in 80% of the games.

[GER_T4IGA]

But the card is rated for ×16. Will be performance decreased and if I would be better off with 2-way SLI. 2*16=32

The cards performance will be the same on 16x 8x and probably also 4x.

[GER_T4IGA]

SLI will run in x8 either way. PCI-e x16 doesn't make any difference, nor does x4

Just keep in mind it's better to buy 1 good GPU in stead of 2 average GPU's in SLI.

AND: don't do more than 2-way SLI. The 3rd and 4th are not utilized in 80% of the games.

Yeah. You could to 2 way SLI and crazy watercooling for probably cooler looks and similar performance and by far less heat the 3x. Please correct me if I made any wrong assumptions.

[Sakkura]

4-way SLI is a waste of money. 3-way SLI usually runs just as well, sometimes even better. And even the scaling from 2 to 3 is pretty weak. Most people can't afford more than 2 cards, so there's much less work put into optimizing the drivers for 3-way and 4-way SLI (and Crossfire).

 

For 3-way SLI you'd only need 24 PCIe lanes, which a cheaper Core i7-5820K would provide. Since the only advantages the 5930K has over the 5820K are more PCIe lanes and a largely irrelevant bump in stock clocks, I'd suggest getting the 5820K instead.

 

Or if you really want to go balls to the wall, a 5960X would make more sense. Then you actually get more CPU performance.

[Curufinwe_wins]

4-way SLI is a waste of money. 3-way SLI usually runs just as well, sometimes even better. And even the scaling from 2 to 3 is pretty weak. Most people can't afford more than 2 cards, so there's much less work put into optimizing the drivers for 3-way and 4-way SLI (and Crossfire).

For 3-way SLI you'd only need 24 PCIe lanes, which a cheaper Core i7-5820K would provide. Since the only advantages the 5930K has over the 5820K are more PCIe lanes and a largely irrelevant bump in stock clocks, I'd suggest getting the 5820K instead.

Or if you really want to go balls to the wall, a 5960X would make more sense. Then you actually get more CPU performance.

Unfortunately many mobos dont let you 3 way sli with a 5820k. That said one of my recommendations does the asrock fatality x99x.

[NumLock21]

Yes a 5930k can support up to 4-way sli, but that also depends on the board you get. Boards that support it will run the cards at x8 each, so it total up to 32 lanes. This leaves you with 8 lanes to spare for up to 2 m.2, nvme, or pcie ssd.