can a stock 5930k @3.5 bottleneck my gpu?

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darkshelby

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May 1, 2012
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just wondering guys can a stock i7 5930k @3.5 bottleneck my dual sli gtx 980? the gpu are also stock. just wondering.

asus rampage V
1 tb ssd samsung
ddr4 16gb 2800ghz
1300 antec high current pro
asus gtx 980 x2
i7 5930k@3.5
 
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LukaBoki

LukaBoki

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Jul 12, 2014
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The 5930K is one of the most powerful CPUs available right now.The only one stronger is the 5960X,which is way too overpriced in my opinion.The 5930K will NOT bottleneck 4xGTX 980 or 2x R9 295x2,so you will be good to go with your two GTX 980s.
 
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iAboodz

iAboodz

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Mar 20, 2013
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I have to correct you sorry mate. BF4 uses so much cpu specially on 64 big conquest maps. An overclock from stock to 4.0-4.5Ghz WILL give you a performance push around 8-15fps trust me..
 
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puntloos

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Nov 25, 2014
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Actually IT CAN!

Sorry to disagree with all/most of you folks but I just ran into exactly this issue when playing Far Cry 4.

I used to have a single 970 GTX + 5930K and was running into slowness in some areas. Move forward to literally today and my second 970 GTX arrived, and guess what, Far Cry 4 runs (in some areas) exactly as fast as my single 970.

The reason seems to be that the people in this thread are right the CPU is "pretty much the fastest out there" but Far Cry 4 is apparently the stupidest out there and especially in the villages, one of my CPU cores is maxed out, while the others are all sitting there twiddling their thumbs. Look at your windows task manager. (control-alt-del, start TM). Perhaps it is the 'AI core' (I seem to have lower performance with more people/animals onscreen) but insanely enough in short the answer seems to be yes, in some situations we have a problem.
 
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nikoli707

nikoli707

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Jan 4, 2012
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that is a problem with driver overhead, coding, and nvidia drivers.
 
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puntloos

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Nov 25, 2014
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You might very well be right. Surely no game can really seriously demand people to buy a pretty insane CPU. Still, that is Far Cry 4's current situation.

https://www.youtube.com/watch?v=M25Le3JdHH8&feature=share - the performance crappiness part starts around 10:00 - the conclusion is about the same: He has an even better rig than me and indeed he notices that Core 3 of his system is at 100% while the rest is basically idle.

Thing is though that SOME reviewers that benchmarked FC4 - http://www.overclock.net/t/1525384/gamegpu-farcry-4-benchmarks - for example - claim they had no problems reaching 170fps MINIMUM, so maybe it also is some type of configuration setting. For one I haven't tried my new SLI setup with WIndows 8.1 yet...
 
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Darkbreeze

Darkbreeze

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Jun 24, 2014
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No, that is not Far Cry's situation. Far Cry's situation is that it is poorly coded and does not know how or refuses to, take advantage of any more than four cores (Only one of which seems to actually get used) or any less than four either.



"Update: Far Cry 4 mostly utilizes your CPU's third core, barely tapping into the first two cores on a processor, as members of this Reddit thread first pointed out (and I've since confirmed on my own system). This seems like a case of poor PC optimization more than any inherent dual-core hardware limitation. Ubisoft has yet to respond to my request for comment."


That aside, I don't see that this has anything to do with the OP's question. Clearly, as most these members already indicated, the 5930k is not going to bottleck any single or multiple card gaming GPU configuration currently available. And overclocking it will not only help with frame rates on some titles, but will also increase performance on titles that ARE in fact more CPU dependent than most. End of story.
 
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LukaBoki

LukaBoki

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Jul 12, 2014
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There's a problem with the game or something,as darkbreeze and nikoli707 said. This isn't just an issue with Far Cry 4. Watch Dogs has this problem too. I've heard some people saying that you get a better experience with one 970 than two 970,and that one 970 beats the 970 SLI config in some situations. Of course,the difference isn't anything major,probably something like 1-2 FPS,but it still beats it. :p
 
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puntloos

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Nov 25, 2014
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Strange. Every fact you list I agree with but every conclusion you draw I disagree :) - I think it's mostly a question of language though. Let me re-write a little and see if we actually agree. Note that yes, I am using FarCry4 as a specific example, while the OP maybe doesn't even have the game, but the points are the same for any piece of software that is almost single threaded on a multi-core CPU.

#1: Likely due to poor programming of Far Cry 4, possibly due to a nvidia driver issue, one CPU core/thread is completely maxed while others are pretty much idle. The graphics cards seem to be waiting for this core to finish its work before 'drawing the next frame' (a bit simplified).

#2: Increasing the CPU's frequency (while keeping GPU, RAM, HDD etc the same) increases the amount of frames per second FC4 is outputting. This is the raw definition of a CPU bottleneck!

Now as for whether or not this SHOULD be happening with a properly written piece of software on a high-end CPU we can all agree that this is poor coding, and likely far cry's programmers fault.

As for if it is relevant to the OP, well he asked 'is the CPU a bottleneck?'. The answer is YES, but the extended answer is "This should be fixed in software, it should not be necessary to buy a new CPU or overclock it, because the CPU is super high end. That said, temporarily the OP can indeed improve the situation by overclocking the CPU until a proper fix is created"
 
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Darkbreeze

Darkbreeze

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I didn't draw ANY conclusions in my post. I ONLY listed the facts, and linked to an article, where they drew the conclusions. If you did not click on the linked text and read the article, I'm not surprised.

And the OP did NOT ask ANYTHING about FC. That was another member that brought it into the equation. Other games do not respond similarly and so the issue IS limited to a few titles. The issue has ZERO to do with the CPU bottlenecking the GPU. ZERO.

In almost every case where people have issues with this title, which again is not highly relevant to the thread, the exact same configuration tends to use all available cores fairly equally in other titles and does not display driver issues. So the issue is NOT with the cpu or drivers, it's with the title. Unfortunately there is little we can do to enforce compliance with buggy software, we can however ensure the problem isn't due to our hardware. Which in this case, it would not be. If that CPU bottlenecks a GPU, there is not currently much of any other hardware choices that would alleviate it. And I can't imagine that scenario is even feasible.
 
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puntloos

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Anyway, OK. I think we can agree that a 5930K SHOULD not be a bottleneck since it's a massively powerful CPU, but in some cases, for example FC4, bad programming can cause it to become a bottleneck.
 
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Darkbreeze

Darkbreeze

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Buggy code can diminish the performance of any cpu, regardless of speed or number of cores. In which case it's not a bottleneck, because even if the cpu had 6Ghz speeds with 24 cores, it wouldn't make any difference. A bottleneck is a lack of speed and throughput, not a lack of the games ability to utilize the speed and throughput that are in fact there. If the problem doesn't lie with the cpu not keeping up with the GPU, due to the cpu, it's not a bottleneck, it's bad optimization.
 
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I

iamlegend

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Aug 19, 2014
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lolololol, this thread was mislead into the bottlenecking and optimization and some members don`t understand the difference.

"Bad optimization of FC4 causes the i7 5930k to bottleneck does not makes any sense." I can`t handle this statement.

Just listen to Darkbreeze for he post the correct information.

However, Far cry is a good game same as Assassins creed by Ubisoft and I can`t imagine people who cannot appreciate those games.
 
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Darkbreeze

Darkbreeze

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Darkshelby, with those GPUs and that CPU, there should be no titles you can't play at ultra settings on 1080p. What resolution are you planning to game at and are you planning to use a multiple monitor configuration for games or just a single screen for games?
 
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puntloos

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Nov 25, 2014
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Sigh. You haven't even taken time to look up what a bottleneck is, did you? You just think 'the neck of a glass bottle'?

Let me help.

DEFINITION OF 'BOTTLENECK' - http://www.investopedia.com/terms/b/bottleneck.asp
A point of congestion in a system that occurs when workloads arrive at a given point more quickly than that point can handle them. The inefficiencies brought about by the bottleneck often create a queue and a longer overall cycle time.

Feel free to apply other definitions, wikipedia - Bottleneck literally refers to the top narrow part of a bottle. In engineering, it refers to a phenomenon where the performance or capacity of an entire system is limited by a single or small number of components or resources.

Every. Single. Definition. Here. gives roughly the same point: that due to *some situation* a system is limited by a single point. It is quite possible that the bottleneck is due to human error (poor design of the CPU? poor design of the software? Bad user behavior? When idiots slow down to stare at a car accident in the other lane, suddenly everybody has to slow down. It creates a bottleneck, even though both the cars, the drivers and the road are all capable of going way faster.

Just like I said. Multiple times. Now give it up. Done.
 
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