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D2ultima

The SLI information guide

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Posted · Original PosterOP

Just quoting you because I have aquestion?

Do you think the GTX 770 would be fast enough to do PhysX for a GTX 980 Ti? Probably on the edge, or is it just fine?

I think it should be. I also have this followed so you can reply normally and I'll see it in my mentions. I'm a little OCD so I keep my mentions clean xD.

 

 

I am glad you gave me such insight, so I will attempt to get on that 980ti. I guess because the market right now is console gaming, and since obviously consoles don't have

 

SLI/Crossfire companies don't bother optimizing profiles from the start. I find that rather annoying but at a business perspective it makes sense. 

It's not about the consoles... it's just how the market is heading. The current-gen consoles triggered a string of unoptimization for reasons unknown. Like, before, devs had to squish memory down hard to make them fit on the last-gen consoles. So even if they wanted to be sloppy with the PC, we could usually brute-force it. But now they have oodles of memory and such, and they can fit in a lot more effects by still focusing on lower framerates.

 

The first sloppiness went straight into vRAM. "High resolution every texture ever! I don't care if it makes sense to have a 2048 x 2048 helmet texture as well as a 2048 x 2048 body texture! DO IT! AND MAKE THEM SHOES 4096 x 4096!" or something like that. Since that craze is over because they realized the whole world doesn't have 6GB and 8GB GPUs, and that high resolution textures doesn't make them look better/less muddy (just sharper), we've now encountered the "DEVOUR THE CPU! DEVOUR IT! WE'LL WAIT FOR DX12 AND UNTIL THEN WE'RE GONNA JUST EAT YOUR CPU FOR BREAKFAST!" stage. It sucks because unlike tossing high vRAM GPUs or more GPUs or whatever at the problem (which is a shitty way to deal with it), better CPUs don't exist when you already have a modern i7 that maxes near 100% load and can't even give 120fps in CoD BO3's beta on min graphics. Not that max graphics lowers the FPS any, because it's CPU limited >_>. Watch, I bet next we're gonna get RAM limited and everyone'll need 32GB instead of 8GB for recommended gaming.

 

Anyway. The reason for lack of SLI support is beyond me. Most of the new stuff nVidia are touting lacks SLI support (like MFAA) or has somewhat bad SLI support (like virtual reality) even though previous tech which was supposed to have the same limitations for multiGPU (like temporal filter AA) was circumvented by them (TXAA). A lot of new tech DOES require that AFR is not used, but I find it really stupid for things like Unreal Engine 4 to cut out SLI support AND REMOVE OTHER ADVANCED VISUAL TECH FROM ITSELF because "PCs wouldn't be strong enough to run it". It's like... you're cutting out the way to get the power, then complaining that nobody has the power. Explain.

 

TL;DR? I have no idea why SLI support is waning or sucking or people are utilizing it badly in games, but I don't think it's directly related to the consoles. I think they more just don't care anymore, and I can't say it's getting a lot of love from nVidia in the first place. I can't even consider AMD's option until it works in windowed mode either.


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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I think it should be. I also have this followed so you can reply normally and I'll see it in my mentions. I'm a little OCD so I keep my mentions clean xD.

 

 

It's not about the consoles... it's just how the market is heading. The current-gen consoles triggered a string of unoptimization for reasons unknown. Like, before, devs had to squish memory down hard to make them fit on the last-gen consoles. So even if they wanted to be sloppy with the PC, we could usually brute-force it. But now they have oodles of memory and such, and they can fit in a lot more effects by still focusing on lower framerates.

 

The first sloppiness went straight into vRAM. "High resolution every texture ever! I don't care if it makes sense to have a 2048 x 2048 helmet texture as well as a 2048 x 2048 body texture! DO IT! AND MAKE THEM SHOES 4096 x 4096!" or something like that. Since that craze is over because they realized the whole world doesn't have 6GB and 8GB GPUs, and that high resolution textures doesn't make them look better/less muddy (just sharper), we've now encountered the "DEVOUR THE CPU! DEVOUR IT! WE'LL WAIT FOR DX12 AND UNTIL THEN WE'RE GONNA JUST EAT YOUR CPU FOR BREAKFAST!" stage. It sucks because unlike tossing high vRAM GPUs or more GPUs or whatever at the problem (which is a shitty way to deal with it), better CPUs don't exist when you already have a modern i7 that maxes near 100% load and can't even give 120fps in CoD BO3's beta on min graphics. Not that max graphics lowers the FPS any, because it's CPU limited >_>. Watch, I bet next we're gonna get RAM limited and everyone'll need 32GB instead of 8GB for recommended gaming.

 

Anyway. The reason for lack of SLI support is beyond me. Most of the new stuff nVidia are touting lacks SLI support (like MFAA) or has somewhat bad SLI support (like virtual reality) even though previous tech which was supposed to have the same limitations for multiGPU (like temporal filter AA) was circumvented by them (TXAA). A lot of new tech DOES require that AFR is not used, but I find it really stupid for things like Unreal Engine 4 to cut out SLI support AND REMOVE OTHER ADVANCED VISUAL TECH FROM ITSELF because "PCs wouldn't be strong enough to run it". It's like... you're cutting out the way to get the power, then complaining that nobody has the power. Explain.

 

TL;DR? I have no idea why SLI support is waning or sucking or people are utilizing it badly in games, but I don't think it's directly related to the consoles. I think they more just don't care anymore, and I can't say it's getting a lot of love from nVidia in the first place. I can't even consider AMD's option until it works in windowed mode either.

 

It's pretty crazy seeing manufacturers sport SLI or Crossfire but in real practice it isnt worth the headache. Maybe some enthusiast just like having more than one card just to make their rig impressive? I can definitely see why and it WOULD look awesome, but for a price? Not me at this point.

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Posted · Original PosterOP

It's pretty crazy seeing manufacturers sport SLI or Crossfire but in real practice it isnt worth the headache. Maybe some enthusiast just like having more than one card just to make their rig impressive? I can definitely see why and it WOULD look awesome, but for a price? Not me at this point.

Around 2013 or so, it was more than feasible for many users to buy two midranged cards for cheaper or around the same price as one higher end card, and get a lot more power. But since lately that hasn't been going very well, it's not a surefire upgrade. When the downsides trump the upsides by a large enough margin, it becomes harder to recommend things. It is what it is.


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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Do we still have an issue with the gtx970? I have a WindForce from Gigabyte and am thinking of getting a second. Same exact card and same OC. Side note would 750W be enough to push em both.


Praise Gaben

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Posted · Original PosterOP

Do we still have an issue with the gtx970? I have a WindForce from Gigabyte and am thinking of getting a second. Same exact card and same OC. Side note would 750W be enough to push em both.

nVidia is never going to fix the memory issue with the 970. They can't do it hardware-wise, and doing it through drivers would make it a 3.5GB card, so they'll never do it.

 

If you mean "has the problem getting SLI to work with 970s been fixed?", then I don't know. I didn't even know there was an issue until someone told me there was.

 

I would suggest getting a single 980Ti first before trying to SLI. SLI support is getting worse for the time being, and the single strongest card, even though weaker than two 970s in raw power, is much more consistent with its power.


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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Posted · Original PosterOP

What about processor usage, is it high on multi GPU configurations????

It's increased slightly, however not by a large amount that I could see. I've often run games by forcing single GPU and on regular SLI and I've not seen a whole lot of difference in CPU utilization, though there IS some.


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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Posted · Original PosterOP

lol i didnt even know that the titan xz was a dual gpu card

I hope you meant Titan Z and not Titan XZ because I don't know of any card named the Titan XZ  :mellow:


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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Do we still have an issue with the gtx970? I have a WindForce from Gigabyte and am thinking of getting a second. Same exact card and same OC. Side note would 750W be enough to push em both.

 

750w is fine. I use a 750Watt supply with my system and it runs an SlI 970 configuration. I saw a massive increase in performance across all major AAA titles on the market right now when I added the second 970 to the mix. Heck, whole reason I built my PC was to run SLI 970 and have an overclocked CPU for graphics rendering. I was enjoying performance on a single 970 on my laptop via external graphics amplifier before.

 

sidebar: With dx12 - we need to remember that vram stacking is confirmed. sli970 will render 7gb of vram that is Good and 8gb of vram total (will ONLY be a problem if it needs to "cap" one cards vram before pulling from the other). SLI970 > 980ti IF the game supports sli Benchmarks confirm


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I hope you meant Titan Z and not Titan XZ because I don't know of any card named the Titan XZ  :mellow:

dont worry i did mean titan z and wait is the titan z better than the titan x because the z as almost double the cores?

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Posted · Original PosterOP

sidebar: With dx12 - we need to remember that vram stacking is confirmed. sli970 will render 7gb of vram that is Good and 8gb of vram total (will ONLY be a problem if it needs to "cap" one cards vram before pulling from the other). SLI970 > 980ti IF the game supports sli Benchmarks confirm

970 won't support that technology. SFR is possible with DX9 already (unsure about 11, but it should be) but the amount of memory and the memory bandwidth we have today is too much to transfer over the PCI/e interface and/or the SLI bridge. You'd need the cards to be configured like AMD's XDMA to make sense for most games. Some games where vRAM isn't transferred a lot and there's a very small amount of data being actively used at any given time might work, but those are not the majority of games like battlefield or GTA etc. We'll need Pascal GPUs to be designed for SFR to happen with all games. AMD is already there with XMDA in all the newer cards.

 

dont worry i did mean titan z and wait is the titan z better than the titan x because the z as almost double the cores?

Two Titan Black cards will beat a Titan X, yes. Especially properly overclocked with custom vBIOSes for power draw and overclockability/stability. But that's only in situations where SLI is applicable; and it's not always applicable (especially in new engines like UE4, or the influx of Unity engine games).

 

By that stretch a Titan Z should be capable of beating a Titan X, but the cooler won't be capable of handling any kind of serious OCs or anything.


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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I have 2 Gigabyte GTX970 G1 Gaming, one is flashed with 1.3v custom bios from the GTX970 Owner Club post and one is stock bios...

Can I sli both of them without any problems or do I have flash both of them or use the stock bios for both of them?

 

Link to the bios:

http://linustechtips.com/main/topic/327032-gtx-970-owners-club/

 

 

Thanks


CPU: Intel i7 4790       Motherboard: Gigabyte Z97X-Gaming 5       RAM: Crucial Ballistic Tactical Tracer 8x4 (32GB)       GPU: Gigabtye GTX970 G1 Gaming 2-ways SLI

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Posted · Original PosterOP

I have 2 Gigabyte GTX970 G1 Gaming, one is flashed with 1.3v custom bios from the GTX970 Owner Club post and one is stock bios...

Can I sli both of them without any problems or do I have flash both of them or use the stock bios for both of them?

 

Link to the bios:

http://linustechtips.com/main/topic/327032-gtx-970-owners-club/

 

 

Thanks

You can use any comparible vBIOS with the cards. If they're both G1 gaming cards, they should work. I would suggest later flashing the custom vBIOS on the second card so it overclocks and is stable enough etc, but that's up to you.

 

I and a lot of notebook users use custom vBIOSes on our cards too (actually most of us in our community DON'T use stock vBIOSes), and often people flash one card before the other to make sure we don't brick anything, boot, check if working, then flash the second.

 

The only issue is that I can't predict how the voltages in SLI will work on the second card.


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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You can use any comparible vBIOS with the cards. If they're both G1 gaming cards, they should work. I would suggest later flashing the custom vBIOS on the second card so it overclocks and is stable enough etc, but that's up to you.

 

I and a lot of notebook users use custom vBIOSes on our cards too (actually most of us in our community DON'T use stock vBIOSes), and often people flash one card before the other to make sure we don't brick anything, boot, check if working, then flash the second.

 

The only issue is that I can't predict how the voltages in SLI will work on the second card.

Alright thanks alot man :)  still waiting for my mobo... it takes so long to reach me :(


CPU: Intel i7 4790       Motherboard: Gigabyte Z97X-Gaming 5       RAM: Crucial Ballistic Tactical Tracer 8x4 (32GB)       GPU: Gigabtye GTX970 G1 Gaming 2-ways SLI

Case: Cooler Master K280        Cooling: Cooler Master Seidon 120m (Back)        Fans: Noctua NH-F12 PWM x 2  (Front)    PSU: Cooler Master 700W    

Operating System: Windows 8.1 64bit     Storage#1: Kingston 120gb SSD v300    Storage#2: WD 1TB Blue      Display(s): AOC i2757FH 27 Inch IPS Monitor
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Posted · Original PosterOP

Can I upgrade to an AMD R7 360 if I have a Nvidia GT 240?

This is the wrong thread to ask, but yes.


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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Posted · Original PosterOP

If I have two 970 strixs in SLI with the SLI bridge will I be able to power my monitor through one displayport ???

Yes, that's normally how it works. You don't need to connect anything to the second video card unless you want that card running a display (not in SLI mode)


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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Yes, that's normally how it works. You don't need to connect anything to the second video card unless you want that card running a display (not in SLI mode)

 

Thank you very much :D

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Something to add, if it's not done yet.

Quad SLI does not equal to 4-way SLI. On some motherboard spec sheets, it will say supports quad SLI. This does not mean you can go out and grab 4 GTX 980Ti and SLI them, it will not work. Quad SLI means, a single video card will have 2 gpus in it, such as the GTX 690. When you buy 2 of them and run them in SLI, it's Quad SLI because each video card has 2 gpus. In a 4-way SLI configuration, you will have 4 video cards and each video card will only have 1 gpu.

 

Quad SLI

2x GTX 690

Number of gpus on each GTX 690 = 2

Total number of gpus combined = 4 (quad SLI)

 

4-Way SLI

4x GTX 980Ti

Number of gpus on each GTX 980Ti = 1

Total number of gpus combined = 4 (4-way SLI)


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5820K & 6800K 3-way SLI mobo support list

 

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Posted · Original PosterOP

Something to add, if it's not done yet.

Quad SLI does not equal to 4-way SLI. On some motherboard spec sheets, it will say supports quad SLI. This does not mean you can go out and grab 4 GTX 980Ti and SLI them, it will not work. Quad SLI means, a single video card will have 2 gpus in it, such as the GTX 690. When you buy 2 of them and run them in SLI, it's Quad SLI because each video card has 2 gpus. In a 4-way SLI configuration, you will have 4 video cards and each video card will only have 1 gpu.

 

Quad SLI

2x GTX 690

Number of gpus on each GTX 690 = 2

Total number of gpus combined = 4 (quad SLI)

 

4-Way SLI

4x GTX 980Ti

Number of gpus on each GTX 980Ti = 1

Total number of gpus combined = 4 (4-way SLI)

Good to note, I'll update it under the "what can I SLI" section


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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I have a question.

I saw this video ( 

) he has an i7 4790k, which allows you to use only 16 PCI-E lanes. He is using 3 GTX 760 in SLI. How is this possible if SLI requires the cards to be in 8x slots?
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Posted · Original PosterOP

he has an i7 4790k, which allows you to use only 16 PCI-E lanes. He is using 3 GTX 760 in SLI. How is this possible if SLI requires the cards to be in 8x slots?

 

 

First, I will clear up some fairly common misconceptions about SLI.

 
7 - Your CPU and motherboard have an effect on what you can SLI and how many cards you can SLI. You need to count PCI/e lanes, essentially. Mainstream i7 CPUs (like the i7-4790K) have only 16 lanes; so 2-way SLI (with each card running at 8x bus speed) will be the max the CPU can support, unless the motherboard has a PLX chip to support more cards in SLI.

^ click above


Clevo P870DM3 (Eurocom) | i7-7700K | 32GB DDR4 2400MHz | GTX 1080N SLI | 850 Pro 256GB | 850 EVO 500GB M.2 | Samsung PM961 256GB NVMe | Crucial M4 512GB | Intel 8265ac | 120Hz Matte screen | 780W PSU

 

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

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