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GPU CPU Bottlenecking

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  • GPUs
  • Bottleneck
  • CPUs
  • Graphics
Last response: in Graphics Cards
March 2, 2014 6:37:09 AM

Hi, this is my first time building a computer and I would rather not buy something that won't work well/at all together.

I am buying a "Intel Core i5-4670K Haswell 3.4GHz LGA 1150 84W Quad-Core" CPU and I was leaning towards a "AMD Radeon HD 7870" GPU but I am not sure how to check if the CPU would bottleneck that GPU or the other way around? Also, if you could tell me an easy way to check this out from specs rather than buying it and checking out the usages of both?

If that GPU if not a good option for that CPU, which should I go with?

One last question, I am new to the game so what type of motherboard would I be more inclined to go with if those two are compatible?

Thanks!

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a c 400 à CPUs
March 2, 2014 6:45:17 AM

Just check out benchmarks. If you get 20 fps on max from your CPU, but 40 from the GPU, you're only going to get 20, which means that the GPU's power will go to waste, that's a bottleneck. That setup would not have a bottleneck, though. A Z87 board would be best.
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a b à CPUs
March 2, 2014 6:45:32 AM

No your CPU will not bottleneck a radeon 7870. The i5 4670k could easily run 2 gtx 780 ti's in SLI. As for the motherboard, do you plan on over clocking?
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March 2, 2014 7:03:14 AM

StormyIV said:
No your CPU will not bottleneck a radeon 7870. The i5 4670k could easily run 2 gtx 780 ti's in SLI. As for the motherboard, do you plan on over clocking?


I don't plan on overclocking just because I don't really feel like I need to do so. But thanks and I will def look into the 780 ti's I heard those are a little pricey though!

Thanks for the quick reply!
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March 2, 2014 7:03:32 AM

ewok93 said:
Just check out benchmarks. If you get 20 fps on max from your CPU, but 40 from the GPU, you're only going to get 20, which means that the GPU's power will go to waste, that's a bottleneck. That setup would not have a bottleneck, though. A Z87 board would be best.


Thanks, appreciate it!
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March 2, 2014 7:14:22 AM

StormyIV said:
yea a 780 TI is at least 700$. If you don't plan on over clocking then why not save a few bucks and get the i5 4670? the K version of intels chips are meant to be overclocked. What is your budget for a motherboard?

http://www.amazon.com/Intel-i5-4670-Quad-Core-Processor...



Well I never said I wouldn't do it I just don't need it as of right now. I want to learn more about these things before I experiment and also, I want a pretty good machine :) 

Also, motherboard budget, > $270. I am sure I can get something powerful enough for less than 300$

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a c 400 à CPUs
March 2, 2014 7:29:06 AM

That is a nice motherboard, but for $167, you can still get a Z87. The GA-Z87X-OC is really just for SLI, and won't have much performance difference if any than a $50 cheaper Z87 board. I would use that money to get a good cooler, SSD, or better graphics card.
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