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SLI Question

Acerpwns
By Acerpwns
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Go to solution Solved by Real_PhillBert,

but what gen? Isn't 8x gen 2 just like 4x gen 3? Can i run SLI on a PCI-e gen 3 4x slot?

no you cannot run SLI on a gen 3 4x slot, 8x wiring is necessary. Gen 2 or 3 8x will work just fine.

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Does SLI need 8x PCI-e gen 3 to run or does it run on PCI-e gen 2 8x?

PROJECT MOGAR: CPU: i5 4690k @ 4.9 Ghz CPU Cooler: Corsair H100i in Pull on top Motherboard: Gigabyte Z97X-Gaming GT GPU: Gigabyte GTX 1080 G1 Gaming Edition RAM: Corsair Dominator Platinum (2x8GB) 2133 Mhz  PSU: EVGA G2 850W SSD: Samsung EVO 840 250 GB HDD: WD Black 1TB Case: Cooler Master CM Storm Scout II

 

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Does SLI need 8x PCI-e gen 3 to run or does it run on PCI-e gen 2 8x?

As long as both lanes will run at a minimum of x8 speeds and the motherboard supports SLI then its fine.

|King Of The Lost|
Project Dark: i7 7820x 5.1GHz | X299 Dark | Trident Z 32GB 3200MHz | GTX 1080Ti Hybrid | Corsair 760t | 1TB Samsung 860 Pro | EVGA Supernova G2 850w | H110i GTX
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Unholy Rampage: i7 5930k 4.7GHz 4.4 Ring| X99 Rampage|Ripjaws IV 16GB 2800 CL13| GTX 1080 Strix(Custom XOC Signed BIOS) | Seasonic Focus Platinum 850w |H100i v2 
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As long as both lanes will run at a minimum of x8 speeds and the motherboard supports SLI then its fine.

^ Could not have said it better. 

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As long as both lanes will run at a minimum of x8 speeds and the motherboard supports SLI then its fine.

but what gen? Isn't 8x gen 2 just like 4x gen 3? Can i run SLI on a PCI-e gen 3 4x slot?

PROJECT MOGAR: CPU: i5 4690k @ 4.9 Ghz CPU Cooler: Corsair H100i in Pull on top Motherboard: Gigabyte Z97X-Gaming GT GPU: Gigabyte GTX 1080 G1 Gaming Edition RAM: Corsair Dominator Platinum (2x8GB) 2133 Mhz  PSU: EVGA G2 850W SSD: Samsung EVO 840 250 GB HDD: WD Black 1TB Case: Cooler Master CM Storm Scout II

 

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but what gen? Isn't 8x gen 2 just like 4x gen 3? Can i run SLI on a PCI-e gen 3 4x slot?

The gen of PCI-E on a board won't matter. just both slots MUST run at a minimum of 8x with 2 video cards installed to enable SLI.

|King Of The Lost|
Project Dark: i7 7820x 5.1GHz | X299 Dark | Trident Z 32GB 3200MHz | GTX 1080Ti Hybrid | Corsair 760t | 1TB Samsung 860 Pro | EVGA Supernova G2 850w | H110i GTX
Lava: i9 12900k 5.1GHz (Undervolted to 1.26v)| MSI z690 Pro DDR4| Dominator Platnium 32GB 3800MHz| Power Color Red Devil RX 6950 XT| Seasonic Focus Platnium 850w| NZXT Kraken Z53
Unholy Rampage: i7 5930k 4.7GHz 4.4 Ring| X99 Rampage|Ripjaws IV 16GB 2800 CL13| GTX 1080 Strix(Custom XOC Signed BIOS) | Seasonic Focus Platinum 850w |H100i v2 
Revenge of 775: Pentium 641 | Biostar TPower i45| Crucial Tracer 1066 DDR2 | GTX 580 Classified Ultra | EVGA 650 BQ | Noctua NH D14

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but what gen? Isn't 8x gen 2 just like 4x gen 3? Can i run SLI on a PCI-e gen 3 4x slot?

no you cannot run SLI on a gen 3 4x slot, 8x wiring is necessary. Gen 2 or 3 8x will work just fine.

CPU: i9-13900k MOBO: Asus Strix Z790-E RAM: 64GB GSkill  CPU Cooler: Corsair H170i

GPU: Asus Strix RTX-4090 Case: Fractal Torrent PSU: Corsair HX-1000i Storage: 2TB Samsung 990 Pro

 

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no you cannot run SLI on a gen 3 4x slot, 8x wiring is necessary. Gen 2 or 3 8x will work just fine.

huh.. probably shoulda checked different sources before opening my mouth... thanks for the clarification

PROJECT MOGAR: CPU: i5 4690k @ 4.9 Ghz CPU Cooler: Corsair H100i in Pull on top Motherboard: Gigabyte Z97X-Gaming GT GPU: Gigabyte GTX 1080 G1 Gaming Edition RAM: Corsair Dominator Platinum (2x8GB) 2133 Mhz  PSU: EVGA G2 850W SSD: Samsung EVO 840 250 GB HDD: WD Black 1TB Case: Cooler Master CM Storm Scout II

 

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huh.. probably shoulda checked different sources before opening my mouth... thanks for the clarification

No worries. We are here to answer questions. Dont feel bad about needing to ask from time to time, there is no shame in asking for clarification. :)

CPU: i9-13900k MOBO: Asus Strix Z790-E RAM: 64GB GSkill  CPU Cooler: Corsair H170i

GPU: Asus Strix RTX-4090 Case: Fractal Torrent PSU: Corsair HX-1000i Storage: 2TB Samsung 990 Pro

 

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No worries. We are here to answer questions. Dont feel bad about needing to ask from time to time, there is no shame in asking for clarification. :)

well the problem was that i asked this question a while back i was told one thing and now im told another... i meant i should check out different websites as sources :P

PROJECT MOGAR: CPU: i5 4690k @ 4.9 Ghz CPU Cooler: Corsair H100i in Pull on top Motherboard: Gigabyte Z97X-Gaming GT GPU: Gigabyte GTX 1080 G1 Gaming Edition RAM: Corsair Dominator Platinum (2x8GB) 2133 Mhz  PSU: EVGA G2 850W SSD: Samsung EVO 840 250 GB HDD: WD Black 1TB Case: Cooler Master CM Storm Scout II

 

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well the problem was that i asked this question a while back i was told one thing and now im told another... i meant i should check out different websites as sources :P

You were given a different answer on this site?!?! Where? We must correct this.

CPU: i9-13900k MOBO: Asus Strix Z790-E RAM: 64GB GSkill  CPU Cooler: Corsair H170i

GPU: Asus Strix RTX-4090 Case: Fractal Torrent PSU: Corsair HX-1000i Storage: 2TB Samsung 990 Pro

 

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You were given a different answer on this site?!?! Where? We must correct this.

ahh cant remember exactly but it was sometime around the end of October

but it doesn't matter now, everything is cleared up

PROJECT MOGAR: CPU: i5 4690k @ 4.9 Ghz CPU Cooler: Corsair H100i in Pull on top Motherboard: Gigabyte Z97X-Gaming GT GPU: Gigabyte GTX 1080 G1 Gaming Edition RAM: Corsair Dominator Platinum (2x8GB) 2133 Mhz  PSU: EVGA G2 850W SSD: Samsung EVO 840 250 GB HDD: WD Black 1TB Case: Cooler Master CM Storm Scout II

 

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ahh cant remember exactly but it was sometime around the end of October

but it doesn't matter now, everything is cleared up

Let me clear it up a little for you.

PCI/e 2.0 8x == PCI/e 3.0 4x in bandwidth.

SLI requires a card to be using PCI/e 2.0 or above at 8x speeds.

 

SLI doesn't care about the bandwidth, really. It just wants at least 8x to work.

 

By comparison, I believe Crossfire only needs the primary card to be 8x or above, and the secondary cards can be at 4x. This MIGHT be restricted to PCI/e 3.0, but I am not 100% sure about this. AMD boards do not use PCI/e 3.0 yet, so it would be odd if it only worked that way with intel boards, but then AMD boards probably have more available PCI/e lanes.

 

Anyway, I hope you're fully cleared up.

I have finally moved to a desktop. Also my guides are outdated as hell.

 

THE INFORMATION GUIDES: SLI INFORMATION || vRAM INFORMATION || MOBILE i7 CPU INFORMATION || Maybe more someday

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