rauf00
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Last chance to decide, as i've already place order for TX and now consider to switch or not to switch to 980Ti.
Asus Rampage Ex.V +i7 5960x, in next weeks plans to sink it with LC.
Mainly for racing games.
I believe TX is slightly better for SLI, has safe vram capacity, probably better OC under LC (due to full chip and lower ASIC).
Help me decide please, i don't want to discover in next few weeks that 980Ti is a better way for SLI with 3 monitors rig ;)
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the_Scarlet_one
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 17:05:38
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☄ Helpfulby rauf00 2015/06/02 10:48:53
triple monitor... since a single card and single monitor can use 5gb of the 980ti Ram, which pushing 3 1440's will overdo, you may want to look into more VRAM than 6gb. https://www.youtube.com/watch?v=WjfzDY0D4ck If you don't want to discover in a few weeks, why are you waiting? Reviews are EVERYWHERE. Go look at 1440p Single monitor reviews, and then imagine cutting down everything to minimal settings so you can drive 3x's that resolution total. There is your answer. You obviously have the money if you are asking that question, so swipe that credit card on the card with more over all support. And, don't fall for the DX12 hype of VRAM stacking until it has actually been proven BY Developers to be implemented. it is inevitable that someone is getting ready to pop in and say "BUT VRAM STACKING RAUF..." Yeah, since developers enable every single game in the world to work in SLI... ha... what a good joke.
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chizow
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 17:57:14
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For 1440px3 Titan X SLI will certainly be the safer bet.
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255killer
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 18:20:33
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Agreed titan x in sli would definitely be the suitable choice with that resolution. It will be over kill in some titles but the added vram will come in handy in a growing number.
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VooDooPC
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 19:53:12
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In two months Windows 10 will come out and DX12 will stack VRAM in SLI.
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kielwb
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 20:01:41
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VooDooPC
In two months Windows 10 will come out and DX12 will stack VRAM in SLI.
...as predicted by Scarlet... VRAM stacking must be implemented by the programmer for a game to use it. It will not be automatic. Hedging your bets here could be risky, could pay off. It is not a done deal, though.
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the_Scarlet_one
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 20:04:20
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kielwb
VooDooPC
In two months Windows 10 will come out and DX12 will stack VRAM in SLI.
...as predicted by Scarlet...
VRAM stacking must be implemented by the programmer for a game to use it. It will not be automatic. Hedging your bets here could be risky, could pay off. It is not a done deal, though.
I knew it!!!! Lol!
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VooDooPC
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 20:30:02
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kielwb
VooDooPC
In two months Windows 10 will come out and DX12 will stack VRAM in SLI.
...as predicted by Scarlet...
VRAM stacking must be implemented by the programmer for a game to use it. It will not be automatic. Hedging your bets here could be risky, could pay off. It is not a done deal, though.
Is there any official word that it has to be implemented by the developer?
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the_Scarlet_one
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 20:32:37
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Is SLI and Crossfire in every game? Microsoft supports both.. Where is official word for that? Oh wait, it's all over Nvidia, amd, Microsoft, motherboard, graphics cards, and still, not implemented by developers.
So, is this any different?
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VooDooPC
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 20:59:54
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Scarlet-Tech
Is SLI and Crossfire in every game? Microsoft supports both.. Where is official word for that? Oh wait, it's all over Nvidia, amd, Microsoft, motherboard, graphics cards, and still, not implemented by developers.
So, is this any different?
Hundreds of games support SLI and just about every AAA game in the last several years supports SLI. So what is your point?
post edited by VooDooPC - 2015/06/01 21:03:25
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chizow
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 21:04:20
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kielwb
VooDooPC
In two months Windows 10 will come out and DX12 will stack VRAM in SLI.
...as predicted by Scarlet...
VRAM stacking must be implemented by the programmer for a game to use it. It will not be automatic. Hedging your bets here could be risky, could pay off. It is not a done deal, though.
Not to mention, in order for GPU A to access VRAM on GPU B, you are still going to have to traverse relatively ancient interconnects, like the SLI bridge or PCIe bus. SLI is limited to 1GB/s each way, while PCIe 3.0 x16 is limited to 16GB/s each way. GPU to VRAM bandwidth is 336GB/s on 980Ti as an example and HBM1 is expected to be 520GB/s or more. Nvidia looks to address this with Pascal with their NVLink inter-GPU interconnects which will get 80GB/s (4 connections) peak bandwidth. I am sure we will see some iteration of this for Pascal's SLI implementation even if it is just 1 connection.
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the_Scarlet_one
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 21:07:06
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Haha, you are very determined, I see...
There are games that DO NOT support sli is the point. What in those words do not make sense to you? Please explain.
There are games that are cpu bound... 10 980's with stacked VRAM won't help them... So, what is your point? Please explain, since you are so determined to prove something here.
Say VRAM works on future games.. What good does it do for dx11 games that already exceed the VRAM threshold? Nothing. Not one thing.
Just like some developers will take the easy way out and not use full implementation of dx12. So far, it has not been shown functioning, so a rumor is only a rumor until the developers release it in the game itself. Remember all of the previous release videos of games, like watchdogs, and then the garbage that was actually released?
*chizow got a post in while I was posting.*
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Snijjar
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 21:36:09
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Running 3x SLI with 3 Titan X Hybrids, 5960X - Running on 3 ROG Swift 144hz 1440p monitors
I am very happy with my setup and run everything at Max / Ultra settings at 7830x1440 144hz I would recommend the Titan X's over the 980ti's especially if you running that resolution at 144hz.
If you are doing a 1440p @ 60hz probably can get away with 980ti's
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VooDooPC
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 21:46:02
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I'm not determined to prove anything, I only made two posts. Stop getting your panties in a bunch.
This topic is about the 980 ti's 6gb VRAM vs the Titan's 12gb of VRAM. Show me a game that doesn't support SLI that will use more than 6gb of VRAM.
Also, I fail to see the relevance of your CPU bound comment. So... I don't have a point, I guess? You brought it up, not me. What is YOUR point?
I see no scenario where it's worth spending an extra $1,050 to go from 6gb to 12gb of VRAM, even with three 1440p monitors.
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the_Scarlet_one
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 21:58:07
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VooDooPC
I'm not determined to prove anything, I only made two posts. Stop getting your panties in a bunch.
This topic is about the 980 ti's 6gb VRAM vs the Titan's 12gb of VRAM. Show me a game that doesn't support SLI that will use more than 6gb of VRAM.
Also, I fail to see the relevance of your CPU bound comment. So... I don't have a point, I guess? You brought it up, not me. What is YOUR point?
I see no scenario where it's worth spending an extra $1,050 to go from 6gb to 12gb of VRAM, even with three 1440p monitors.
Did you read the first comment? From the op? I stated h knew the VRAM stacking dx12 thing was going to come up, and that there are games that don't support sli. You came back and said that blah blah blah... I don't need to retype. So, back on topic, one (read op's comments) 980ti with 6gb of VRAM, which is what he is considering, is not going to cost 1,050 extra, for starters. 6gb is NOT enough to drive 3 1440p screens on ultra details. Heck, even 2 cards may struggle with that with the limitations mentioned above of the SLI bandwidth. No game that is out currently supports dx12, so VRAM stacking is moot for anything current. Period. The only things that will matter are future games and ones that may get a patch to implement it, which will be few and far between, if any. So, why rely on something that isn't even available? If he has the extra 350-400, it makes sense to get something that is proven to be better at triple screen. Right now is even a great time to buy, as many people will sell their Titan X with perfect warranties. On that note, do not buy an Nvidia direct card second hand, they don't come with warranties, since warranties do not transfer per Nvidia. Also, at this time, it is much easier to find a list of games that don't support sli, compared to any game that is playable with dx12 and has VRAM stacking implemented. Feel free to populate a list of the ones with stacking capability... I am not going to take the time to look up known games with SLI support at 1am.
post edited by Scarlet-Tech - 2015/06/01 22:05:14
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BruteSangheili
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/01 23:41:13
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chizowNot to mention, in order for GPU A to access VRAM on GPU B, you are still going to have to traverse relatively ancient interconnects, like the SLI bridge or PCIe bus. SLI is limited to 1GB/s each way, while PCIe 3.0 x16 is limited to 16GB/s each way. GPU to VRAM bandwidth is 336GB/s on 980Ti as an example and HBM1 is expected to be 520GB/s or more. Nvidia looks to address this with Pascal with their NVLink inter-GPU interconnects which will get 80GB/s (4 connections) peak bandwidth. I am sure we will see some iteration of this for Pascal's SLI implementation even if it is just 1 connection. I may be wrong but surely the whole concept of split-frame rendering means that the VRAM of each GPU is independent and therefore irrelevant to the other GPUs?
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rjohnson11
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 00:13:34
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Powering 3 monitors like that I would tend to lean towards a Titan X purchase
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dordra2013
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 00:14:19
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Snijjar
Running 3x SLI with 3 Titan X Hybrids, 5960X - Running on 3 ROG Swift 144hz 1440p monitors
I am very happy with my setup and run everything at Max / Ultra settings at 7830x1440 144hz I would recommend the Titan X's over the 980ti's especially if you running that resolution at 144hz.
If you are doing a 1440p @ 60hz probably can get away with 980ti's
This is great information. Thank you for posting this. Can you tell us what sort of frames rates you are seeing with x3in SLI? do you know what frame rates we can expect front x2 in SLI? how much VRAM are you seeing being used? Can you show any of this on you please?
Lastly, how in the world were you able to get three of these? They were instantly gone on the 28th. Insider info? Haha
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Snijjar
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 03:54:09
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dordra2013
This is great information. Thank you for posting this. Can you tell us what sort of frames rates you are seeing with x3in SLI? do you know what frame rates we can expect front x2 in SLI? how much VRAM are you seeing being used? Can you show any of this on you please?
Lastly, how in the world were you able to get three of these? They were instantly gone on the 28th. Insider info? Haha
I ran a benchmark test on GTA V and on most city scenes framerate was anywhere from 50-90fps saw on some nightime scenes it jumped up to 100. On the flying scene it dipped down to 30 but hovered around 60fps. This is with everything set to Very High / Ultra. And it looked like the memory usage went up to around 5600 I actually had 3 Titan SCs from when they were initially released, and installed the 980 Hybrid kits on them Im not too sure what 2x SLI scores would look like in comparison, but would imagine in surround it would be a noticeable difference
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stalinx20
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 03:58:21
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Scarlet-Tech
triple monitor... since a single card and single monitor can use 5gb of the 980ti Ram, which pushing 3 1440's will overdo, you may want to look into more VRAM than 6gb.
https://www.youtube.com/watch?v=WjfzDY0D4ck
If you don't want to discover in a few weeks, why are you waiting? Reviews are EVERYWHERE. Go look at 1440p Single monitor reviews, and then imagine cutting down everything to minimal settings so you can drive 3x's that resolution total.
There is your answer. You obviously have the money if you are asking that question, so swipe that credit card on the card with more over all support.
And, don't fall for the DX12 hype of VRAM stacking until it has actually been proven BY Developers to be implemented. it is inevitable that someone is getting ready to pop in and say "BUT VRAM STACKING RAUF..." Yeah, since developers enable every single game in the world to work in SLI... ha... what a good joke.
Scarlet-Tech, I want to thank you personally for your answer here. I believe this is the best answer that someone could give, especially the information about "VRAM stacking". They need to understand until DX12 is here, stop listening to the hype and b/s. We don't know what is going to happen, and with everybody saying Windows10/DX12 is the next new "messiah" (exageration intended) it's a real laugh. For backing support and more understanding, I think Vlada011 should give his sales pitch about the Titan X 
post edited by stalinx20 - 2015/06/02 04:09:00
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Stephenk291
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 04:14:16
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VooDooPC
kielwb
VooDooPC
In two months Windows 10 will come out and DX12 will stack VRAM in SLI.
...as predicted by Scarlet...
VRAM stacking must be implemented by the programmer for a game to use it. It will not be automatic. Hedging your bets here could be risky, could pay off. It is not a done deal, though.
Is there any official word that it has to be implemented by the developer?
Considering they don't even take advantage of multiple cores yet I'd suspect only AAA developers will be able to deal with VRAM Stacking and I bet that's probably not going to happen for quite some time.
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stalinx20
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 04:22:00
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Stephenk291
VooDooPC
kielwb
VooDooPC
In two months Windows 10 will come out and DX12 will stack VRAM in SLI.
...as predicted by Scarlet...
VRAM stacking must be implemented by the programmer for a game to use it. It will not be automatic. Hedging your bets here could be risky, could pay off. It is not a done deal, though.
Is there any official word that it has to be implemented by the developer?
Considering they don't even take advantage of multiple cores yet I'd suspect only AAA developers will be able to deal with VRAM Stacking and I bet that's probably not going to happen for quite some time.
Yep.
post edited by stalinx20 - 2015/06/02 04:27:37
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mdzcpa
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 05:13:09
(permalink)
☄ Helpfulby rauf00 2015/06/02 10:48:45
This is a no brainer. For pushing 3 1440 monitors with SLI you should with the Titan X. 6GB will be marginal at best to support 3 monitors at those resolutions. If making that kind of investment I wouldn't risk hamstringing myself later. And VRAM stacking is only a theory at this point. I wouldn't risk my investment on an unreleased technology with unknown developer support to save the day.
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rauf00
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 10:54:00
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Thanks guys, Titan X chosen. I'll back here with some basic infos ab. OC performance and vram usage as soon as i'll get triple 1440 monitors. PS EVGA TX of course 
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dordra2013
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 12:53:05
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This thread has been very helpful in its entirety. There has been more information about this issue than anywhere else that I have seen. It is very unfortunate that surround gamers cannot get away with saving hundreds of dollars with the 980TIs, but it is what it is.thank you to everyone for the posts and I look forward to benchmarks and screen shots!
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chizow
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 13:00:02
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BruteSangheili
chizowNot to mention, in order for GPU A to access VRAM on GPU B, you are still going to have to traverse relatively ancient interconnects, like the SLI bridge or PCIe bus. SLI is limited to 1GB/s each way, while PCIe 3.0 x16 is limited to 16GB/s each way. GPU to VRAM bandwidth is 336GB/s on 980Ti as an example and HBM1 is expected to be 520GB/s or more. Nvidia looks to address this with Pascal with their NVLink inter-GPU interconnects which will get 80GB/s (4 connections) peak bandwidth. I am sure we will see some iteration of this for Pascal's SLI implementation even if it is just 1 connection.
I may be wrong but surely the whole concept of split-frame rendering means that the VRAM of each GPU is independent and therefore irrelevant to the other GPUs?
For the frame buffer sure, but people are starting to claim low amounts of RAM on multi-GPU will be compensated for in DX12 due to a pooled memory feature, meaning 3x4GB cards might give you ~10GB worth of VRAM, reducing the need for more VRAM per card. That's where slow interconnects come into play, because a GPU A accessing textures from GPU B and C is going to have to use some REALLY slow interconnects.
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Tricky2u
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 17:16:41
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I'm running SLI TitanX SC w/EVGA Backplates on Triple BenQ 24" 144hz monitors 1980x1080 = 6020 x 1080 Bezel Corrected and have no issues with my Steam Games. CPU is i7-4970 @ 4.5GHz and 16 gig of Ram (need to upgrade to 32 Ram).
post edited by Tricky2u - 2015/06/02 17:19:04
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dordra2013
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/06/02 18:19:44
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I was lucky enough to get the TX hybrid when it went on sale an hour ago, thanks for the good advice in this thread!
Thermaltake Level 10 GT/i7-5930k @ 4.3GHz/ Asus X99 deluxe /16Gb Corsair Dominator Platinum 2800/EVGA GTX 770 Classified w/ACX/ 2x Intel 520 SSD in RAID 0
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warpedkid11
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/11/30 14:35:09
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Alright I have another question for you smart guys in this thread since I will have my 2 additional ROG Swifts very soon and only have one 980 ti classified at the moment.
From what I have read/seen about how the Nvidia Surround technology works is it is not rendering three full panels of game but two with the outer 25% or so stretched out to cover the rest of the panel. So the VRAM consumption you guys are talking about is based off one panel fully rendering a 2560x1440p resolution but in surround the game is not rendered at 7680x1440 more like 5120x1440 with portions stretched across the peripheral monitors to cover the desired resolution. Consoles do a similar function when they take a smaller native resolution and stretch it out to cover 1920x1080 even though I hate to compare PCs to consoles.
With this in mind do you still feel as though 2x 980 ti's will not be sufficient for 1440 surround?
People have also run 1440p surround with 3x 780ti gpus at 3gb ram each so how would 6gb not be enough?
Let me know what you think. Unfortunately I cannot find a good video of 3 ROG swifts being powered by 2 x 980 ti just yet, I might be the first to make one. I am definitely going to make a video of the three of these monitors on one 980 ti to show the performance on that and I will knock down the resolution to 1080p to see performance.
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ragevirusqq
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Re: SLI for 3x1440p/144Hz - Titan X or 980Ti?
2015/12/14 08:00:06
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Bump on this thread. Anyone follow through here? i would like to see what 2 x 980ti can do with 3 rog swifts in surround.
CaseLabs SM8 - X99 Classified - EVGA 1080ti - 5930k @ 4.5 - 32GB Hyper X predator - 480mm x2 and 360mm rads for super low fan speed and quiet operation- EK blocks and pump/res - All Bitspower black fittings - 1Tb samsung 850 evo 2tb total ssd space - EVGA 1300G2 - Predator X34 - Mayflower Objective 2 DAC/AMP - Beyerdynamic DT990 Pro - Sennheiser HD6xx - Mackie CR4 monitors
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