What about SLI?
 
I have a 4790K @ 4.6GHz with 16gb (2x8GB) 2400MHz CL10 RAM and planning on getting GTX 1080 SLI setup. I'm gonna game @ 3440x1440.

Zuhl3156

GiantAssPanda
What about SLI?
 
I have a 4790K @ 4.6GHz with 16gb (2x8GB) 2400MHz CL10 RAM and planning on getting GTX 1080 SLI setup. I'm gonna game @ 3440x1440.

I am at 4.7 GHz and have no bottleneck here with GTX-980 SLI. My scores beat out a single GTX-1080 so I am staying put until I see some Volta boards next year.

and good luck with those games with poor scaling or no SLI support at all. 

trek554

bcavnaugh

trek554

bcavnaugh

VegetaCreeper
At lower resolutions, 1080p, you will have more of a CPU bottleneck. However, if you game at more demanding resolutions 2560×1440, 3440x1440 (21:9) or 3440x2160 (4k), your bottleneck wont be as bad

 
This makes not since to me, why would a lower resolution cause CPU bottleneck and now an even higher resolution?
It would seem that 3440x2160 (4k) would cause a CPU bottleneck before 1920x1080P would.
 

I cant believe this has to be explained to you. the higher the res the more gpu demanding it becomes and that is just common sense. when you lower the res you take more load off the gpu. if you have fast cpu then when you lower the res the framerate will go up. if your cpu is slow then lowering the res will not make much difference in the framerate. for example there are parts of Crysis 3 where his cpu can only get 45 fps or so because that is all the cpu can do. with a strong gpu he could get that 45 fps at 1440 or even 4k but lowering the res in those spots is not going to help with framerate when the cpu is the limiting factor. also at lower res a game can stutter more with a weaker cpu as the load shifts away from the gpu. 

My Apologies, but thank you.

sorry for sounding so rude. I guess I have been around this stuff for so long that it surprises me when someone says something like you did...

I was under the impression that this Forum was for users to ask question and to get help from others.
 
1) The higher the res the more gpu demanding it becomes and that is just common sense: True and yes most would know this as I do and that is not what I was asking about.
 
(Are you are saying then that the Lower the resolutions is the Higher the CPU Bottleneck will be)
 
This is what I am asking is:
If I run 3440x1440 (21:9) or 3440x2160 (4k) I would have less or no bottleneck from the CPU.
But if I run only 1920x1080p I would have a high bottleneck form the CPU
 
From: VegetaCreeper
At lower resolutions, 1080p, you will have more of a CPU bottleneck.  However, if you game at more demanding resolutions 2560×1440, 3440x1440 (21:9) or 3440x2160 (4k), your bottleneck wont be as bad
 
Not all of us are as smart as you are trek554 so please allow us dumber users ask questions or a better description of the question in hand

Hello,
 
as many have said I doubt you would encounter a bottleneck do to your 2500k on a single GPU. I would not consider SLI on that cpu however as you will definitely have a bottleneck.

GiantAssPanda

trek554

Zuhl3156

trek554
 
and good luck with those games with poor scaling or no SLI support at all. 

I'm only playing at 1080p 144 Hz and have no problem with DOOM that doesn't use SLI at all.

lol and thats the only game you play? how is SLI working out for you in Quantum Break, Batman Arkham Knight, Just Cause 3, Rise of Tomb Raider DX12 and many others? heck Unreal Engine 4 does not even support multi gpus at all. the point is a 1080 is a heck of lot better overall gaming solution than 980 SLI.  

To be fair, Quantum Break doesn't work on Nvidia GPUs at all whether it's single or multi GPU setups. Arkham Knight is a POS port and you can still play Tomb Raider in DX11 with SLI support.
 
Also, chill. No need to be so antagonistic.

Quantum Break works just fine on Nvidia cards. it was only at the initial launch that it had issues and that was on both companies not just Nvidia. and same can be said for Arkham Knight too as it plays fine if you have a proper setup. I am just sick of people acting like SLI gives the same experience as single card as is does not. SLI will always be more trouble and is not even going to work in many games. Tomb Raider DX12 was just an example as most DX12 games dont support SLI either. even big studios are usually not going to waste time working on SLI when it is a small niche. 

https://www.youtube.com/watch?v=WZ_5p9wd2dk
 
Core i5 6600K Skylake Benchmarks vs i5 4690K/ 3770K/ 2500K/ FX-8350 using Titan X.

Best real-time comparison I've found.

trek554

EVGATech_MDecker
Hello,
 
as many have said I doubt you would encounter a bottleneck do to your 2500k on a single GPU. I would not consider SLI on that cpu however as you will definitely have a bottleneck.

I already gave clear proof that a 2500k can indeed be a large bottleneck for single 1080. 

No need to be so harsh about it. With an EVGAtech messaging, it's icing on the cake for the OP that he will fine, even with your explanation.

Actually this is a great video regarding the subject.
 
youtube.com/watch?v=frNjT5R5XI4
 
 
I'm not either convinced that OP 'needs' to upgrade just yet, especially since he has 2133MHz ram in his PC. 2500K is definitely nearing the end of its life cycle but I'm not sure if it's yet obsolete. Especially with the low level APIs like DX12 and Vulkan on the horizon. 

Yhan2
Thanks for the replies everyone.  I guess I am getting some mixed message here.  IMHO, I'm sure I will be getting bottlenecked to a degree as the I5 2500K is an older chipset.  I guess the question I am trying to ask is to what "degree' is the bottleneck where the price to performance ratio is not worth the purchase given that I'm gaming at 2560 x 1440?

I gave you some very clear examples of just how much you would hold back a 1080. and those were playable differences as you cant even maintain 60 or even 50 fps in those examples I gave you. you have no trouble dropping up to 700 bucks on a gpu but cant spend a fraction of that to get the best use out of it in all games? again after selling your other parts its not much money at all and you will be set for the next few years. 

Thanks trek544.  I am leaning towards swapping for a new system a year from now. In the meantime, I am going to overclock some more to squeeze every bit of performance on the i5 2500k and keep an eye out for new tech in the meantime (CPU and GPU wise). 

What motherboard do you have?