Been waiting for the additional power and ram to run 7680 x 1440 with maxed out settings.  For me 22 GB RAM is a need 11 GB and the older hardware not enough to get the job done at the frame rates I demand with the settings I demand.  (why I held off on the 1080tis reviews wern't cutting it)
 
2 x 2080ti Hydros for me!

A single 2080 Ti will be better at 4K in titles that don't support SLI/mgpu. In games that support SLI/mgpu gwo 1080 Tis will be faster at 4K.
 
And $1200 is $500 more than I am willing to spend on a Ti.
 
That's why I threw caution to the wind and got a second 1080 Ti, even though I hate SLI (due to waning support). I won't support that increase in price. I'll buy a used one in a year or two for half the asking cost.

I'm on the same side of the fence as you on this one.  I wanted butter smooth 4k gameplay on games like Total War Warhammer II.  You're not going to get that with the 2080 ti.  I already have a 1080 ti and it seems to me the smart play is to just purchase a second one and get the performance I really wanted in the first place.  I feel like there was a misstep here not increasing overall power (to equate to such a huge price increase) and VRAM.  I might have considered it seriously with the ray tracing performance if they'd at least bumped the VRAM to 15GB (still wouldn't have justified that cost though).

I would wait and see what performance reports are from users on the 2080 Ti before deciding between the two.
Me personally, never had a desire to SLI so I just get the best single card I can afford at the time.
I like the KISS principle.

If you already have 1x 1080 Ti I would either 1) stick or 2) sell the 1080 Ti and upgrade to 2080 Ti.
 
If you don't have already have 1x 1080 Ti I would bite the bullet and go for 1x 2080 Ti. (Of course, we don't have the new performance specs yet, but if you are asking about SLI then your value for money sweet spot is likely to be different to the average PC gamer. I should know... I am in the same shoes as you. But I am waiting more because I want Hydro Coppers or Kingpin edition 2080 Ti, so by that time the performance testing will be available to read).
 
SLI does offer some scaling depending on the game (somewhere between -10% worst case and +50% FPS best case), but you are adding a lot of extra heat to your PC, it is expensive and despite the theoretical increase in average FPS you will notice micro stutters which can be flipping annoying. Much more annoying in fact than more stable but c.20% lower average frame rates. Plus if you are not gaming in 4k, 5k or 8k, then 1440p will be great anyways with either 1x 1080 Ti or especially great with a 2080 Ti.
 
I had 980 Ti in SLI a while ago and sold one of the cards after a few months use / experience. It just was not worth it.

2080 Ti > 1080 Ti SLI

Dariusz1989
Hey
 
This has never happen before sooo... with the 2080ti price increase. We can now get 2x 1080ti and still have spare £ left or 1x 2080ti. To be honest, I think the 1080ti is a better investment. Its going to be a long while before the RTX on gpu is usable and I'm fairly sure we will need 40+ GIGARAYS before it actually is good enuf for us.

What ya all thinking?

Where are you finding new GTX 1080 Ti cards for less then $600? A RTX 2080 Ti is $1,200 and you said you can get two GTX 1080 Ti cards with spare money left.

arestavo

kram36

Dariusz1989
Hey
 
This has never happen before sooo... with the 2080ti price increase. We can now get 2x 1080ti and still have spare £ left or 1x 2080ti. To be honest, I think the 1080ti is a better investment. Its going to be a long while before the RTX on gpu is usable and I'm fairly sure we will need 40+ GIGARAYS before it actually is good enuf for us.

What ya all thinking?

Where are you finding new GTX 1080 Ti cards for less then $600? A RTX 2080 Ti is $1,200 and you said you can get two GTX 1080 Ti cards with spare money left.

Where does it say "new" in the paragraph that you quoted. It doesn't, that's where :-P
 
I picked up a used Gigabyte 1080 Ti FE for $493 off of Ebay - it works great, and I put it under an AIO cooler with a G10 bracket just like my EVGA 1080 Ti FE and both overclock the same.

Used GTX 1080 Ti vs New RTX 2080 Ti isn't a fair price comparison, that would make the price comparison invalid.
 
The post didn't say he would be buying used GTX 1080 Ti cards either. :-P

RivAngE
If I'm not mistaken, the basic difference of SLI and Nvlink is that Nvlink shares the memory between the cards and every card's power is combined like one card, but SLI requires supported software which will divide the workload between the cards.
So as already mentioned by other members, SLI is dead (a long time now actually)

That's not what NVlink will be like at all for consumer cards, and it's clarified in a video. Forget the dude's name from Nvidia. 
 
NVlink is a faster version of SLI, with a very high bandwidth instead of just a high bandwidth.
 
Memory sharing won't happen because the link is too slow and will cause issues. It COULD theoretically be implemented by game devs, but you know that they won't but in the extra effort if they can't even be bothered to implement DX12 mgpu. And it will cause slow down issues, just like when your CPU has to hit the page file when you run out of faster system memory.
 
As to the combining of cards into one so that games see just one device? I'd love to see where you read/heard that being the case because that's a fancy bit of software.

arestavo

RivAngE
If I'm not mistaken, the basic difference of SLI and Nvlink is that Nvlink shares the memory between the cards and every card's power is combined like one card, but SLI requires supported software which will divide the workload between the cards.
So as already mentioned by other members, SLI is dead (a long time now actually)

That's not what NVlink will be like at all for consumer cards, and it's clarified in a video. Forget the dude's name from Nvidia. 
 
NVlink is a faster version of SLI, with a very high bandwidth instead of just a high bandwidth.
 
Memory sharing won't happen because the link is too slow and will cause issues. It COULD theoretically be implemented by game devs, but you know that they won't but in the extra effort if they can't even be bothered to implement DX12 mgpu. And it will cause slow down issues, just like when your CPU has to hit the page file when you run out of faster system memory.
 
As to the combining of cards into one so that games see just one device? I'd love to see where you read/heard that being the case because that's a fancy bit of software.

No no no I didn't mean that 2 cards connected through Nvlink are recognized as one card, but based on this: https:// en . wikichip.org/wiki/nvidia/nvlink and the following image,
 
The GPUs work as one under the CPU's orders. I may have understood the technology wrong but what I understood is that shared memory = shared workload. So a single frame can be worked by both cards at the same time.

Also depends on what you are upgrading from.  If you are upgrading 1080TI to 2080TI...that is fine.  Memory bandwith is 484 to 616 GB/s.  Upgrading to a 2080 from a 1080TI is more questionable...since 2080 only does 448 GB/s memory speed

Hello folks,

What is the status nowadays?

I’m running 2x EVGA GTX 1080Ti FE, not in SLI, I do play quite a bit but the main use of the computer is 3D. I stopped using SLI because I could not see any performance increase, it actually decreases when rendering for example with Redshift 3D. I'm planning to upgrade my PC and looking to spend as less as possible 😊

Right now the base config is:
Intel Core i7-5930K
MSI X99A Sli Plus USB 3.1
64 GB DDR4-2400 Crucial Ballistix Sport

And I’m ready to order:
Intel Core i9-9900k
Aorus Z390 PRO WIFI
64 GB DDR4-3000 Corsair Vengeance

So, my question is, should I sell the 2x 1080Ti and get 1x RTX 2080Ti?
I’m not sure it will be worth in terms of performance for 3D and Video rendering
 
Thanks in advance for your help!

lucidworld
Not to be that guy, but being that Zen 2 is right around the corner, I figure it might be worth it to see the results before pulling the trigger on a new system.

Thanks, indeed mate, up to today 9900K, it's the CPU with the best performance for after effects which for me would be great as I'm doing a lot of 4K renders.
Maybe I will look into that, but anyways, my main concern right now still related to the GPU as I don't have enough money for GPU and CPU/MOBO/memory upgrades :/

Thank you very much!
 
You right, I totally forget about that "detail" ha!
With only 16 lanes, I would need to give up my M.2 drive, Wifi, and still running both GPU @ 8x :/
 
Good idea, maybe I can get something like i7-6900K and some 3200 memory as you mentioned, what you think?
In that case, do you think would be worth to change to the RTX?

lucasalles
Thank you very much!
 
You right, I totally forget about that "detail" ha!
With only 16 lanes, I would need to give up my M.2 drive, Wifi, and still running both GPU @ 8x :/
 
Good idea, maybe I can get something like i7-6900K and some 3200 memory as you mentioned, what you think?
In that case, do you think would be worth to change to the RTX?

 
I can't put my finger on the information right now ..... There was something about Win 10 & Losing ability to OC that generation of CPUs
 
edit: Found it  KB4100347: Intel microcode updates (messes with CPU

i7 6900K Broadwell-E overclock gone in Windows ...
 
Within budge at Stock BCLK - get the fastest RAM your MB will support. 

Some X99 MB seem to have issue with some RAM chips changing the BCLK to 125 when it should be 100
 
I like to use the RAM Mfg for looking at what they have tested to work in any MB