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x8x8 z87 vs x16x16 2011 for 2 way sli PCi E 3.0

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January 18, 2014 3:57:15 PM

Hello i am having trouble with this i am wondering if its worth going with LGA 2011 for x16x16 in 2 way sli VS z87 x8x8 for 2 way sli both use PCi E 3.0

Most i would ever do is 2 way sli

i am talking about PCi E 3.0 bandwidth x16x16 LGA 2011 vs z87 x8x8 in 2 way SLI

Is it worth paying the extra money for LGA 2011 and MOBO vs z87 cpu and mobo for less money will i see a big difference between the too where its worth going 2011 for x16x16 in 2 way sli?

As cards get better do you think GPUs will need more bandwidth and x16x16 will be mandatory?

if you could help me decide that would be awesome and thanks in advanced!
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January 18, 2014 4:00:42 PM

Go with z87. The difference between x16 and x8 is negligible.
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January 18, 2014 4:02:14 PM

Either way both set ups essentially run at x8 on both lanes. By going SLI you don't double the number of lanes, you are just splitting them between the two cards. This works because graphics card do not some close to using all of the available band width. When a board has x16 x16, it can actively give one of the cards more bandwidth if it is using more, where as the normal set up is just static x8 x8. So you really won't see much of a performance difference, maybe if you're looking at 780ti's or something you would notice it but not otherwise.
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January 18, 2014 4:11:28 PM

woltej1 said:
Either way both set ups essentially run at x8 on both lanes. By going SLI you don't double the number of lanes, you are just splitting them between the two cards. This works because graphics card do not some close to using all of the available band width. When a board has x16 x16, it can actively give one of the cards more bandwidth if it is using more, where as the normal set up is just static x8 x8. So you really won't see much of a performance difference, maybe if you're looking at 780ti's or something you would notice it but not otherwise.


I do plan on running 2 780 ti's its why i am asking and as cards get better wont x16x16 be the new x8x8?
newer cards will have more performance so wont x16x16 be better?
if i can save money not going 2011 id be happy but how future proof is z87 when it comes to 2 way sli?

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January 18, 2014 4:15:03 PM

it is very futureproof, z87 is running the latest protocols, etc so you'll be fine. Like I said, no matter what you have the same amount of graphics bandwidth available either way, just one is slightly more efficient.
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January 18, 2014 4:23:13 PM

The 2011 boards are worth it IMO if you want 3-way SLI, or you need a 6-core CPU for work. In your case, the Z87 will do just fine and it saves you money you can use for the graphics card.

What kind of power supply do you want to get? A PC with GTX 780 Ti SLI should have a PSU rated 920W or more with 2 6-pin connectors and 2 8-pin connectors.
http://www.realhardtechx.com/index_archivos/Page362.htm
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January 18, 2014 4:33:06 PM

aevm said:
The 2011 boards are worth it IMO if you want 3-way SLI, or you need a 6-core CPU for work. In your case, the Z87 will do just fine and it saves you money you can use for the graphics card.

What kind of power supply do you want to get? A PC with GTX 780 Ti SLI should have a PSU rated 920W or more with 2 6-pin connectors and 2 8-pin connectors.
http://www.realhardtechx.com/index_archivos/Page362.htm


Ya i am only going to be gaming and i will be doing 2 way sli 780 ti and 2 way sli is the most id ever do linus tech tips doesn't recommend doing anything more than 2. My current build looks like this so far

NZXT 630 Phantom Full Tower (case)
Kraken X60 (CPU cooler)
i7-4770k (CPU)
Asus Maximus 6 Formula (mobo)
Trident x (2x8) 16gb 2400/cas10 (memory)
780 ti 2 Way SLI (GPU)
2 tb Black series HDD (newer version)
500GB Samsung 840 EVO (SDD)
have not chosen optical drive or PSU yet

Could you help me find a good PSU?

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January 18, 2014 6:06:09 PM

I'd pick the Corsair HX1050, that is good enough for GTX 780 Ti SLI and some overclocking if you want. There's also an eVGA Supernova 1000W that could do the job well.
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January 18, 2014 6:18:21 PM

aevm said:
I'd pick the Corsair HX1050, that is good enough for GTX 780 Ti SLI and some overclocking if you want. There's also an eVGA Supernova 1000W that could do the job well.


im thinking of doing 2 770s in sli instead of 2 780 Ti's What do you think? i want to use the 4gb version or i dont need to if i only want 2560x1400 resolution? what brand is best for 770 gpus or what one should i use?

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January 18, 2014 6:19:51 PM

TX850 would handle that.
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January 18, 2014 6:21:44 PM



im thinking of doing 2 770s in sli instead of 2 780 Ti's What do you think? i want to use the 4gb version or i dont need to if i only want 2560x1440 resolution? what brand is best for 770 gpus or what one should i use?

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January 18, 2014 6:24:56 PM

Konane said:

im thinking of doing 2 770s in sli instead of 2 780 Ti's What do you think? i want to use the 4gb version or i dont need to if i only want 2560x1400 resolution? what brand is best for 770 gpus or what one should i use?


Yes, the 4GB version is a good idea for 2560x1440.

What brand... Asus and eVGA are my favorites, because they tend to have excellent coolers and good customer service. I trust MSI and Gigabyte too.
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January 18, 2014 6:28:58 PM

aevm said:
Konane said:

im thinking of doing 2 770s in sli instead of 2 780 Ti's What do you think? i want to use the 4gb version or i dont need to if i only want 2560x1400 resolution? what brand is best for 770 gpus or what one should i use?


Yes, the 4GB version is a good idea for 2560x1440.

What brand... Asus and eVGA are my favorites, because they tend to have excellent coolers and good customer service. I trust MSI and Gigabyte too.


im looking at doing this card in 2 way sli http://www.newegg.ca/Product/Product.aspx?Item=N82E1681... suggestions or any feed back?
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January 18, 2014 6:29:39 PM

You will need the 4gb version to SLI. EVGA, MSI and ASUS are good cards to get. EVGA probably has the best customer service out of them.
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January 18, 2014 6:33:31 PM

woltej1 said:
You will need the 4gb version to SLI. EVGA, MSI and ASUS are good cards to get. EVGA probably has the best customer service out of them.


Yes this is a 4 gb and EVGA is this a good card? http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...
Any suggestions or feed back?

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January 18, 2014 6:34:39 PM

Oh yes, that's a good card all right :) 
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January 18, 2014 6:37:00 PM

aevm said:
Oh yes, that's a good card all right :) 


Ya i think this might be better than 2 780 Ti's for the money or would you recommend doing 2 780's non ti over the 770's for 2560x1440 at ultra max settings all the eye candy

Oh wow look at this http://www.newegg.ca/Product/Product.aspx?Item=N82E1681... is this 2 760's built into one? like the 690 but with 760's instead of 680's?

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January 18, 2014 6:47:00 PM

Look at some benchmarks and then decide. I think 770 SLI is very close to 780 SLI in performance. The 770 is better value for money.

For example:

Metro Last Light, 2560x1440, ultra settings, 55 fps for GTX 770 SLI and 62 fps for GTX 780 SLI
http://www.guru3d.com/articles_pages/radeon_r9_290x_cro...

Look at the other pages in the review too, it's pretty much the same thing in all the games they benchmarked.


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January 18, 2014 6:49:55 PM

Konane said:

Oh wow look at this http://www.newegg.ca/Product/Product.aspx?Item=N82E1681... is this 2 760's built into one? like the 690 but with 760's instead of 680's?



Yeah, Asus has done this "Mars" thing before, with GTX 285 and GTX 580, and now GTX 760. It's fun, but I'd rather have two separate GTX 760 cards because that way I get better cooling.
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January 18, 2014 7:03:18 PM

aevm said:
Look at some benchmarks and then decide. I think 770 SLI is very close to 780 SLI in performance. The 770 is better value for money.

For example:

Metro Last Light, 2560x1440, ultra settings, 55 fps for GTX 770 SLI and 62 fps for GTX 780 SLI
http://www.guru3d.com/articles_pages/radeon_r9_290x_cro...

Look at the other pages in the review too, it's pretty much the same thing in all the games they benchmarked.




aevm said:
Konane said:

Oh wow look at this http://www.newegg.ca/Product/Product.aspx?Item=N82E1681... is this 2 760's built into one? like the 690 but with 760's instead of 680's?



Yeah, Asus has done this "Mars" thing before, with GTX 285 and GTX 580, and now GTX 760. It's fun, but I'd rather have two separate GTX 760 cards because that way I get better cooling.


Ok so i plan on buying this monitor ROG Swift PG278Q its a 2560x1440 res monitor , what type of graphic card setup would i need to run 100+ fps would i need 2 780 ti's? or somthing more crazier and does 4gb mean a big difference over a 3gb card for 2560x1440?

http://rog.asus.com/296652014/news/rog-announces-the-pg...

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January 18, 2014 7:28:49 PM

100+ fps at 2560x1440 is a lot. If you want it with the highest quality settings you will need two GTX 780 Ti cards indeed, or two R9-290x cards. In either case a 1000W PSU. And lots of case fans for cooling.

4GB would be better than 3GB at huge resolutions like 1440p, but that's if everything else is the same. E.g. a GTX 760 4GB will beat a GTX 760 2GB with similar clocks at 1440p. However, if you compare two different cards with different number of stream processors, the amount of VRAM doesn't tell you which one is faster. E.g. a GTX 780 3GB will wipe the floor with a GTX 760 4GB despite having less VRAM.
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January 18, 2014 7:39:14 PM

aevm said:
100+ fps at 2560x1440 is a lot. If you want it with the highest quality settings you will need two GTX 780 Ti cards indeed, or two R9-290x cards. In either case a 1000W PSU. And lots of case fans for cooling.

4GB would be better than 3GB at huge resolutions like 1440p, but that's if everything else is the same. E.g. a GTX 760 4GB will beat a GTX 760 2GB with similar clocks at 1440p. However, if you compare two different cards with different number of stream processors, the amount of VRAM doesn't tell you which one is faster. E.g. a GTX 780 3GB will wipe the floor with a GTX 760 4GB despite having less VRAM.


So 2 of these http://www.newegg.ca/Product/Product.aspx?Item=N82E1681... ? should be good for 2560x1440 for 100+ fps max settings and all the eye candy? the 3GB should be enough right?

Also Can the Maximus 6 Hero Handle 2 780 ti in SLI at x8x8 it should be fine right i dont need x16x16 2011?? PCIE 3.0

And do i have to worry about z87 x8x8 2 way sli becoming bottle necked at all as new graphics cards come out im just being paranoid lol

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January 18, 2014 7:45:09 PM

You won't get 100fps and maximum eye candy at the same time in certain games. You will need to lower the eye candy to increase fps, or maximize the eye candy and accept the lower fps. Still, you will get over 60 fps with eye candy maxed in most games. Wow, I want a rig like that myself :) 

No worries about the x8x8, it's fine.
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January 18, 2014 7:50:12 PM

aevm said:
You won't get 100fps and maximum eye candy at the same time in certain games. You will need to lower the eye candy to increase fps, or maximize the eye candy and accept the lower fps. Still, you will get over 60 fps with eye candy maxed in most games. Wow, I want a rig like that myself :) 

No worries about the x8x8, it's fine.


Ok ya maybe 100+ fps was non realistic im fine with 60+ fps with all the max settings and eye candy. But 3 gb 780 ti should be good enough for 2560x1440 right? i dont need more memory on my video card?

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January 18, 2014 11:11:35 PM

Yes, 3 GTX 780 Ti cards will handle anything. However, you'd need a LGA 2011 motherboard to prevent bottlenecks. E..g $350 for the Asus X79 Deluxe:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
which can offer x16/x8/x8. The Z87 boards only offer x8/x4/x4 and performance will suffer.

And of course, if you get a LGA 2011 MB you need a LGA 2011 CPU, e.g. i7-4930k.

Also, a PSU capable of handling all that would cost a lot. The minimum recommendation for that sort of thing is 1250W.
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January 18, 2014 11:30:40 PM

aevm said:
Yes, 3 GTX 780 Ti cards will handle anything. However, you'd need a LGA 2011 motherboard to prevent bottlenecks. E..g $350 for the Asus X79 Deluxe:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
which can offer x16/x8/x8. The Z87 boards only offer x8/x4/x4 and performance will suffer.

And of course, if you get a LGA 2011 MB you need a LGA 2011 CPU, e.g. i7-4930k.

Also, a PSU capable of handling all that would cost a lot. The minimum recommendation for that sort of thing is 1250W.


No i meant to say will the 3 GB memory on the 780 ti in SLI be enough for 2560x1440 or do i need a card with higher memory i will only be running 27" monitor with 2560x1440 resolution but i want to run max settings everything with all the eye candy enabled .

Will the 3GB memory on the 780 ti be a problem at all? even in the future?? its what i want to know
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January 18, 2014 11:36:42 PM

Well, you don't really have many choices here. If you look at newegg right now all the GTX 780 Ti cards have 3GB.

Besides, the memory is not the most important thing in a graphics card. For example look here, the GTX 780 Ti 3GB beats a GTX Titan 6GB:
http://www.bit-tech.net/hardware/graphics/2013/11/27/ba...


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January 18, 2014 11:40:01 PM

In case you were wondering, the GTX 780 Ti 3GB beats the Titan 6GB, despite the memory disadvantage, because the 780 Ti has 2880 cores and the Titan only 2688. Ok, there are other differences too, but it's mostly the sheer computing power from those CUDA cores that matters.
http://www.geforce.com/hardware/desktop-gpus/geforce-gt...
http://www.geforce.com/hardware/desktop-gpus/geforce-gt...
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January 18, 2014 11:41:43 PM

aevm said:
Well, you don't really have many choices here. If you look at newegg right now all the GTX 780 Ti cards have 3GB.

Besides, the memory is not the most important thing in a graphics card. For example look here, the GTX 780 Ti 3GB beats a GTX Titan 6GB:
http://www.bit-tech.net/hardware/graphics/2013/11/27/ba...




yes i understand was just wondering how it would effect 2560x1440 gaming and if 3gb is bad for future proofing

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January 18, 2014 11:50:59 PM

I guess we'll know when eVGA or Asus makes a 6GB version of the GTX 780 Ti and we can compare it with the 3GB versions. I'm guessing the extra RAM would help but not a lot.

Here's an example:
http://www.hardwarecanucks.com/forum/hardware-canucks-r...
GTX 770 2GB gets 52.16 fps
GTX 770 4GB gets 53.5 fps
Both in Hitman at 2560x1440.

In this particular example the difference is negligible, and in fact it may be caused by higher clocks rather than the extra RAM.

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January 18, 2014 11:55:20 PM

aevm said:
I guess we'll know when eVGA or Asus makes a 6GB version of the GTX 780 Ti and we can compare it with the 3GB versions. I'm guessing the extra RAM would help but not a lot.

Here's an example:
http://www.hardwarecanucks.com/forum/hardware-canucks-r...
GTX 770 2GB gets 52.16 fps
GTX 770 4GB gets 53.5 fps
Both in Hitman at 2560x1440.

In this particular example the difference is negligible, and in fact it may be caused by higher clocks rather than the extra RAM.



Was just wondering because if i am going to buy 2 800$ GPUs i want to make sure it will work and not mess up down the road. What is the memory on the video card used for and how does it work. do you think 3gb memory is enough for what i want to do the 780 ti 3gb should be just fine?
I know there are no other higher GB memory on the 780 ti's just wondering if there would be any issues

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