CPU Bottlnecking GPU

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TopLuca

TopLuca

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Jun 2, 2012
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So After doing hours and hours of research I couldn't find a proper answer on how to know if that particular CPU that you are seeking to buy will ca use a bottleneck with your chosen GPU. I know that almost certainly will always be a bottleneck but for most cases it won't be noticeable however I want to know an accurate measurement not just by looking at benchmarks or CPU Usage , any Solid answer will do fine or a link to an article.
Thanks in advance.
 
Solution
ksham
It depends what they're for. Gaming? Which games? Or video editing? There are so many factors.

Normally, bottlenecks depend on the application. For example, a game that is not CPU intensive will not cause the CPU to bottleneck the GPU as badly as for games that are more CPU intensive.

So how would you know all of this? You read up on benchmarks on the CPU, GPUs, and how intensive the game itself is. There may not be a full study of exactly what you are looking for, so you have to piece them together.
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ksham

ksham

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Mar 29, 2013
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I don't know of any benchmark tests that compare any one specific CPU to a GPU. That would be quite a comprehensive study and not an easy one because it would also have to test the games as well. A CPU may bottleneck the GPU in one game but not another.

Best to ask if you have a specific comparison.
 
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TopLuca

TopLuca

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A Specific Comparison wouldn't make me learn anything , I'd ask again if I want to compare other things opposed to if I understood the basic concept about it then later I'd be able to help myself. give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime.
 
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InvalidError

InvalidError

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There is no universal answer to this since which component will bottleneck first or most will change on a game-per-game, scene-by-scene basis.

A system with "no bottleneck" still bottlenecks; albeit at a performance level where the person claiming "no bottleneck" cannot be bothered with any further improvements.
 
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TopLuca

TopLuca

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Let's make it simpler , In case you want to choose a suitable CPU for a certain GPU or vice versa on what basis do you choose.
 
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robax91

robax91

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From my experience it changes easily depending on the parts and the programs you are trying to run, but if I were to make a tier list it would look like this:

Tier 1:
CPU
Intel i5 or higher (starting with sandy)
AMD 8350 or higher (not quite as good as Intel but not tier 2)
GPU
Nvidia 670 or higher 600 series or 760 or higher 700 series
AMD 7970 or higher 7000 series or R9 280 or higher R9 series

Tier 2:
CPU
Intel i3 (newer) i5 (older) and Quad extreme
AMD 6 core or overclocked quad core
GPU
Nvidia 650ti and up or 750 and up
AMD 7850 and up or R9 260 and up

Not at all accurate, but scale the GPU cost off the CPU cost. IE if you buy a $100 CPU, don't get anything over a $200 GPU. $200 CPU can prob handle $400 GPU. $250+ probably can handle any GPU.

Examples:

$100 AMD 6300 6 core and $200 260x

$200 Intel i5 and $400 770

$300 Intel i7 and $3000 Titan Z

I know these are a bit off price but you get the idea...
 
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ksham

ksham

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Mar 29, 2013
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It depends what they're for. Gaming? Which games? Or video editing? There are so many factors.

Normally, bottlenecks depend on the application. For example, a game that is not CPU intensive will not cause the CPU to bottleneck the GPU as badly as for games that are more CPU intensive.

So how would you know all of this? You read up on benchmarks on the CPU, GPUs, and how intensive the game itself is. There may not be a full study of exactly what you are looking for, so you have to piece them together.
 
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Solution
TopLuca

TopLuca

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Thanks for the answer .I'll try and make a collection of all the factors in one giant article one day :D

 
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ksham

ksham

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Mar 29, 2013
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You can just ask a bunch of questions relating to them to start. It'll get you a sense of how well each CPU, GPU, and how intensive the game is. Most people can tell you how intensive a game is if they played it and on what hardware they played it on. So from that, you can make out a good idea on how well it does.
 
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TopLuca

TopLuca

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I generally know most of what you're talking about , problem is when something is new or untested . Thats when things become tricky because you don't know all the insights about this specific product and even in some reviews they tend to test it with the highest Benchmarking Hardware available so it arouses a sense of suspicion about this certain product .
 
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