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tronder

Cpu bottlenecking

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Posted · Original PosterOP

Hi guys im going to buy a i5 6600k with a gtx 1080 wether the cPU will bottleneck the 1080 or wether i need a i7 6600k for no restrictions

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It might a little at 1080p, but you should only be buying a 1080 for 1440p or above, so no.


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1 minute ago, tronder said:

really? even for gaming? like new generation i5 will bottleneck 1080? seriously?

yes, slightly at 1080p. It should still run very well, just if you plan to hit 144fps for 144hz monitors. It will be fine for 1440p and above, you shouldn't be buying it for 1080p anyway. 


Please quote our replys so we get a notification and can reply easily. Never cheap out on a PSU, or I will come to watch the fireworks. 

PSU Tier List

 

My specs

Spoiler

PC:

CPU: Intel Core i5-6600K @4.8GHz
CPU Cooler: Noctua NH-U14S 
Motherboard:  ASUS Maximus VIII Hero 
GPU: Zotac AMP Extreme 1070 @ 2114Mhz
Memory: Corsair Vengeance LPX 16GB (2 x 8GB) DDR4-2400 
Storage: Samsung 850 EVO-Series 500GB 
Storage: Western Digital Caviar Blue 1TB
Case: Cooler Master MasterCase Pro 5 
Power Supply: EVGA 750W G2

 

Peripherals 

Keyboard: Corsair K70 LUX Browns
Mouse: Logitech G502 
Headphones: Kingston HyperX Cloud Revolver 

Monitor: U2713M @ 75Hz

 

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11 minutes ago, tronder said:

that makes no sense though cause 1440 is more restrictive and requires more HP than 1080p...

That gpu is way more powerful than i5. 

 

At 1080p the card can push over 150 frames in many games and CPU has to process all of that data. That puts a lot of stress on it. On higher resolutions GPUs dont produce that many frames so CPU deals with less data. 

 

Tldr; GPUs work harder at higher res providing CPU with less data = less stress on CPU.

 

This is why I was surprised when people said FX8350 runs games decently at 4K compared to 1080p when it bottlenecks a lot.

 

Very basic explanation but I hope you get the point.


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1 hour ago, tronder said:

Like when you say bottleneck on 1080p how much interms of performance are you saying?

get an i7-6700K and a GTX 1070 and call it a day you'll have a much better system.


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My old 4790k @ 4.7ghz sits at 90-95% usage in bf1 on ultra. 1440@144hz and a 1080sc. 

Sure as hell ain't getting 144 frames but it does it's best. See high 130's. 

 

Gonna see how it handles bf4 and hardline this weekend. Only games I really play though. 


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i7 6700k + GTX 1080

i5 6600k + GTX 1070

i7 6700k + GTX 1070

i5 6600k + GTX 1060

 

Pick one of the above option. 

In my opinion, GTX 1080 should be paired only with the best tier CPU. And right now the best gaming CPU is i7 6700k.


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6 minutes ago, Simon771 said:

i7 6700k + GTX 1080

i5 6600k + GTX 1070

i7 6700k + GTX 1070

i5 6600k + GTX 1060

 

Pick one of the above option. 

In my opinion, GTX 1080 should be paired only with the best tier CPU. And right now the best gaming CPU is i7 6700k.

Not to sound offensive, but that's an ignorant way of looking at it.

 

 


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39 minutes ago, Dark said:

Not to sound offensive, but that's an ignorant way of looking at it.

 

 

but if you pair i5 6600k and GTX 1080, CPU will be bottlenecking you.


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1 hour ago, Simon771 said:

but if you pair i5 6600k and GTX 1080, CPU will be bottlenecking you.

Rarely will the i5 drop framerate enough to consider it a 'bottleneck' with a 1080 and even while the issue is more pronounced with the Titan X (pascal), it's still marginal in games that are heavily CPU bound.


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People tend to be more concerned with the frames dropping for some reason as opposed to the real issue. 

 

Even with my cpu pegged at 100% frames nor clock speed moved. It was laggy. Simple as that. Also when frame time goes from 4-5 to 12-14 that's the real issue. I don't car if I get 60 frames as long ask the time is low and no lag. 


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Spare RIg Corsair Air 540, I7 4770K, Asus Maximus VI Extreme, G.Skill Ares 32Gb, EVGA 1080sc & 1060 SSC, Corsair CX850M, Acer KG251Q 1920x1080@240hz 

 

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This whole conversation is completely useless without knowing what games you're wanting to run.  I have 2x 1080s and a 5930k @ 4.3GHz and I can't get more than 40FPS in certain places in World of Warcraft because of how badly it is optimized for multiple cores on the CPU.  Every game is going to act differently, so tell us what games you're focused on and that will allow for an actual answer to be given.

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43 minutes ago, Mick Naughty said:

People tend to be more concerned with the frames dropping for some reason as opposed to the real issue. 

 

Even with my cpu pegged at 100% frames nor clock speed moved. It was laggy. Simple as that. Also when frame time goes from 4-5 to 12-14 that's the real issue. I don't car if I get 60 frames as long ask the time is low and no lag. 

This^^^^

 

If you intend on gaming with that PC of your OP you'll want the best experience,  right? A CPU bouncing of the Rev limiter makes for a bumpy, stuttering ride. People get lost in fps, frame times and minimum fps matter way more.


If anyone asks you never saw me.

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53 minutes ago, ShaithEatery said:

This whole conversation is completely useless without knowing what games you're wanting to run.  I have 2x 1080s and a 5930k @ 4.3GHz and I can't get more than 40FPS in certain places in World of Warcraft because of how badly it is optimized for multiple cores on the CPU.  Every game is going to act differently, so tell us what games you're focused on and that will allow for an actual answer to be given.

when you build a new system you do not focus on ''what games you want to play'' because you don't know what you'll want to play in the future, what games you might get bored with, what new games you might get interest in etc...that's a stupid way of thinking.

 

What you want to do is build something that will perform great overall in every scenario...that's why you avoid for example an AMD FX CPU because while it has decent multi-threaded performance it's single core performance is abysmal and some games will punish you hard for that...that's why you pick 16GB of RAM...most games can run off of 8GB but some will punish you for that, same for memory clockspeed some games will react well with faster memory...that's why you avoid a GPU with only 3GB of VRAM cause some games will punish you for that, for the same reason you try to avoid a CPU that is ''barely ok for now'' with only 4 threads and 6mb of L3 cache because again some games will punish you for that...

 

So even if the game you plan to play FOR NOW only require 2 GB of VRAM, 8GB of RAM, 4 CPU thread and 1333mhz RAM...this might NO LONGER be the case next holidays when you'll want to play the new game that has just come out and your friends are playing...see what i mean? man.

 

A good gaming PC is something balanced where you want to attack every front possible within your budget constraints...and IMHO in this right very moment a PC with a GTX 1070 and an i7-6700K will perform better and more consistently and will age better than one with 50% less CPU threads and L3 cache and a 20% faster GPU...in the grand scheme of things unless you do 4K gaming or shit like that...


| CPU: Core i7-8700K @ 4.89ghz - 1.21v  Motherboard: Asus ROG STRIX Z370-E GAMING  CPU Cooler: Corsair H100i V2 |
| GPU: MSI GTX 1080Ti Gaming X Trio 2ghz OC  RAM: 16GB T-Force Delta RGB 3066mhz |
| Displays: Acer Predator XB270HU 1440p Gsync 144hz IPS Gaming monitor | Oculus Rift S

 

Read: My opinions on VR in it's current state, should YOU buy into it?

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