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gtx 980 SLI bottleneck?

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zqa20
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2014/09/19 13:12:53 (permalink)
Hi guy's hopefully I can step up to the 980 from my current 780ti and buy the second. I'm wondering, will my 3570k at 4.5 bottleneck these 980s? 
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    scarface_810
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    Re: gtx 980 SLI bottleneck? 2014/09/19 15:01:52 (permalink)
    you solud be fine

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    #2
    zqa20
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    Re: gtx 980 SLI bottleneck? 2014/09/19 16:00:02 (permalink)
    Thanks. does anybody else want to reassure  me there won't be a bottleneck here?
    #3
    klown07
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    Re: gtx 980 SLI bottleneck? 2014/09/19 16:30:55 (permalink)
    Should be fine. Do some overclocking. Or, if you have the money to burn, then just upgrade and give your mind some peace. Good luck with your decision :)

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    lehpron
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    Re: gtx 980 SLI bottleneck? 2014/09/19 20:41:39 (permalink)
    zqa20
    Thanks. does anybody else want to reassure  me there won't be a bottleneck here?

    1. Can't ever get rid of bottlenecks, overclocking only reduces the impact; but at some point as the CPU clock goes higher, something else in the system will hold performance back, you can shift the problem to another component.  You just got to draw a line somewhere.
    2. Let's put it this way, what could you upgrade to?  Haswell and Haswell-E, in terms of instructions per clock and per core, is barely 10% faster than Ivy Bridge and Ivy Bridge-E.  Meaning, even if you upgrade to a i5-4690K and somehow get it to the same overclock frequency you have now, you only really gain 10% in your games' performance.  Therefore, even if you were bottlenecked, getting a brand new platform isn't going to help (unless you're the type that thinks even 1% better is worth dropping several hundred).
     
    You could get a higher-resolution display, which would force your games into being more GPU-bound and less dependent on the CPU.
     
    The last ditch option is to stop playing CPU-bound titles so the impact on your processor is minimal, which kicks anything multiplayer out because those games make the CPU interact with the Ethernet controller as well as handle all the characters on screen.  The CPU is already running the game and telling the graphics card what to draw.  If you can't overclock your processor any higher, then the key to reducing its bottleneck is to give it less to do.
    post edited by lehpron - 2014/09/19 20:44:12

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    zqa20
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    Re: gtx 980 SLI bottleneck? 2014/09/20 06:22:30 (permalink)
    lehpron
    zqa20
    Thanks. does anybody else want to reassure  me there won't be a bottleneck here?

    1. Can't ever get rid of bottlenecks, overclocking only reduces the impact; but at some point as the CPU clock goes higher, something else in the system will hold performance back, you can shift the problem to another component.  You just got to draw a line somewhere.
    2. Let's put it this way, what could you upgrade to?  Haswell and Haswell-E, in terms of instructions per clock and per core, is barely 10% faster than Ivy Bridge and Ivy Bridge-E.  Meaning, even if you upgrade to a i5-4690K and somehow get it to the same overclock frequency you have now, you only really gain 10% in your games' performance.  Therefore, even if you were bottlenecked, getting a brand new platform isn't going to help (unless you're the type that thinks even 1% better is worth dropping several hundred).
     
    You could get a higher-resolution display, which would force your games into being more GPU-bound and less dependent on the CPU.
     
    The last ditch option is to stop playing CPU-bound titles so the impact on your processor is minimal, which kicks anything multiplayer out because those games make the CPU interact with the Ethernet controller as well as handle all the characters on screen.  The CPU is already running the game and telling the graphics card what to draw.  If you can't overclock your processor any higher, then the key to reducing its bottleneck is to give it less to do.




    Oh, so my CPU at it's current speed is faster than all of haswell CPU's (for gaming) @stock speeds? wow thought there would be a bigger gap between generations. guess my CPu will do fine for another year at least then
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    NemesisChild
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    Re: gtx 980 SLI bottleneck? 2014/09/20 06:45:50 (permalink)
    zqa20
    lehpron
    zqa20
    Thanks. does anybody else want to reassure  me there won't be a bottleneck here?

    1. Can't ever get rid of bottlenecks, overclocking only reduces the impact; but at some point as the CPU clock goes higher, something else in the system will hold performance back, you can shift the problem to another component.  You just got to draw a line somewhere.
    2. Let's put it this way, what could you upgrade to?  Haswell and Haswell-E, in terms of instructions per clock and per core, is barely 10% faster than Ivy Bridge and Ivy Bridge-E.  Meaning, even if you upgrade to a i5-4690K and somehow get it to the same overclock frequency you have now, you only really gain 10% in your games' performance.  Therefore, even if you were bottlenecked, getting a brand new platform isn't going to help (unless you're the type that thinks even 1% better is worth dropping several hundred).
     
    You could get a higher-resolution display, which would force your games into being more GPU-bound and less dependent on the CPU.
     
    The last ditch option is to stop playing CPU-bound titles so the impact on your processor is minimal, which kicks anything multiplayer out because those games make the CPU interact with the Ethernet controller as well as handle all the characters on screen.  The CPU is already running the game and telling the graphics card what to draw.  If you can't overclock your processor any higher, then the key to reducing its bottleneck is to give it less to do.




    Oh, so my CPU at it's current speed is faster than all of haswell CPU's (for gaming) @stock speeds? wow thought there would be a bigger gap between generations. guess my CPu will do fine for another year at least then




     
    That's not what he's saying, read #2 more closely.

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    #7
    zqa20
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    Re: gtx 980 SLI bottleneck? 2014/09/20 09:59:51 (permalink)
    NemesisChild
    zqa20
    lehpron
    zqa20
    Thanks. does anybody else want to reassure  me there won't be a bottleneck here?

    1. Can't ever get rid of bottlenecks, overclocking only reduces the impact; but at some point as the CPU clock goes higher, something else in the system will hold performance back, you can shift the problem to another component.  You just got to draw a line somewhere.
    2. Let's put it this way, what could you upgrade to?  Haswell and Haswell-E, in terms of instructions per clock and per core, is barely 10% faster than Ivy Bridge and Ivy Bridge-E.  Meaning, even if you upgrade to a i5-4690K and somehow get it to the same overclock frequency you have now, you only really gain 10% in your games' performance.  Therefore, even if you were bottlenecked, getting a brand new platform isn't going to help (unless you're the type that thinks even 1% better is worth dropping several hundred).
     
    You could get a higher-resolution display, which would force your games into being more GPU-bound and less dependent on the CPU.
     
    The last ditch option is to stop playing CPU-bound titles so the impact on your processor is minimal, which kicks anything multiplayer out because those games make the CPU interact with the Ethernet controller as well as handle all the characters on screen.  The CPU is already running the game and telling the graphics card what to draw.  If you can't overclock your processor any higher, then the key to reducing its bottleneck is to give it less to do.




    Oh, so my CPU at it's current speed is faster than all of haswell CPU's (for gaming) @stock speeds? wow thought there would be a bigger gap between generations. guess my CPu will do fine for another year at least then




     
    That's not what he's saying, read #2 more closely.




    Ah, the way I interpreted what he said goes as follows :').......
     
    Your ivy bridge CPU is around 10% slower clock for clock compared to modern haswell CPUs. As your CPU is clocked 20% higher than stock your CPU is slightly faster than haswell CPUs for gaming unless you buy a modern haswell chip and manage to get it to a similar frequency. In which you will get get a minimal/unnoticeable difference. 
     
    main thing i took away is that i would have to be borderline crazy to change my CPU for gaming/SLI setup
     
    does that sound about right?
    post edited by zqa20 - 2014/09/20 10:06:55
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    Nereus
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    Re: gtx 980 SLI bottleneck? 2014/09/20 10:17:13 (permalink)
     
    Not borderline crazy, but unless you have money to burn, I think they are saying the impact of upgrading the CPU is relatively small, if not completely without impact for most current games. You should be fine as you are, but if you're really concerned, you may be better to get a large high res monitor to use more of the GPU resources (no idea what you are using at present of course, I'm just assuming maybe 23" 1920*1080). The new ASUS PG278Q gaming monitor is out if you really want to go high-performance... but that's also expensive.
     


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    zqa20
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    Re: gtx 980 SLI bottleneck? 2014/09/20 10:24:17 (permalink)
    Nereus
     
    Not borderline crazy, but unless you have money to burn, I think they are saying the impact of upgrading the CPU is relatively small, if not completely without impact for most current games. You should be fine as you are, but if you're really concerned, you may be better to get a large high res monitor to use more of the GPU resources (no idea what you are using at present of course, I'm just assuming maybe 23" 1920*1080). The new ASUS PG278Q gaming monitor is out if you really want to go high-performance... but that's also expensive.
     


     I currently have a 1440p benq monitor but i was planning on getting a g sync 1440p monitor in the future hence why i want to SLI. 
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    lehpron
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    Re: gtx 980 SLI bottleneck? 2014/09/20 10:35:55 (permalink)
    zqa20
    Oh, so my CPU at it's current speed is faster than all of haswell CPU's (for gaming) @stock speeds? wow thought there would be a bigger gap between generations. guess my CPU will do fine for another year at least then.
    The issue is competition, once AMD stopped being a threat to Intel, IPC improvements per generation leveled out.  Your processor may die of wear before something better comes along, or unless you get into more multi-threaded games and move onto the X99 platform.
     
    NemesisChild 
    That's not what he's saying, read #2 more closely.
    Well, his conclusion could be one if he had the expectation that newer generations at stock speed was faster than his overclock.  What you got out of my post could be another interpretation; both are right.  He could just gamble on the hope that he could get a better batch of Haswell quad-core and overclock it higher than 4.5GHz, but then that logic would work with getting another Ivy Bridge and saving some money.  He could also invest towards getting a higher overclock on his current processor-- of course, it depends on whether the bottleneck is really that bad.  
     
     
    Overall, I think he'll be fine.  While graphics cards are running away from CPU in terms of technology progression, Mantle and DX12 may reduce overhead and compensate for not having the highest overclock.

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    the_Scarlet_one
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    Re: gtx 980 SLI bottleneck? 2014/09/20 11:18:02 (permalink)
    Plain answer, that cpu isn't going to bottleneck this card. I think it was JayzTwoCents that did the BF3 bottleneck video, can't exactly remember, and it took him turning two cores off as well as hyperthreading on a 3570k at stock clocks to "bottleneck" a 780. You WILL be fine.
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    aberkae
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    Re: gtx 980 SLI bottleneck? 2014/09/20 16:55:18 (permalink)
    I believe only at lower resolutions but higher resolutions should scale excellent


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    trek554
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    Re: gtx 980 SLI bottleneck? 2014/09/20 17:26:13 (permalink)
    for the most part its not much of a concern. Crysis 3 however stands no chance of staying above even 45 fps with your cpu though. with a 780 some other games I had were nearly tapping out my oced 2500 k and I had to make sure I turned off everything else when gaming. SLI adds even more cpu overhead too. 

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    hiz father
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    Re: gtx 980 SLI bottleneck? 2014/09/20 17:53:19 (permalink)
    If I have pcie 2.0 slots, how much will i be bottlenecked i with a 980?

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    trek554
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    Re: gtx 980 SLI bottleneck? 2014/09/20 17:57:25 (permalink)
    hiz father
    If I have pcie 2.0 slots, how much will i be bottlenecked i with a 980?


    pci-e 2.0 at 16x will have almost zero impact on performance. if you are talking about 8x such as running SLI then there will be a slight performance hit but not worth worrying about. 
    post edited by trek554 - 2014/09/20 17:59:59

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    hiz father
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    Re: gtx 980 SLI bottleneck? 2014/09/21 23:21:59 (permalink)
    Alright man thanks for the info :)

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    jcw777
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    Re: gtx 980 SLI bottleneck? 2014/09/22 00:38:28 (permalink)
    Ur fine. I'm running a 920 OCed to 4.0 and I max everything on a 780ti sc. Well except for Rome 2. My mobo has IDE on it. That's how old this my pc is.
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