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post #11 of 17
Thread Starter 
Cannot the eye be advanced enough to evolve a brain within it? lol
post #12 of 17
If GPUs/CUDA could replace x86-64 it would have already, it can't.
    
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post #13 of 17
Quote:
Originally Posted by verythaiguy View Post
Hey guys... I'm wondering something... if GPU's are that much faster than CPUs, then how come we even need to use CPUs anymore? Why don't we throw out the cpu and spend all our money on GPUs? CPU is optimized for arithmetic logic, while GPU is optimized for graphics processing including vectors and such?
GPUs are good at parallel processing, which is something CPUs are not good at at all. CPUs do a lot more than AL bud.
 
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post #14 of 17
GPUs excel at massively parallel operations such as encoding,rendering,etc.
CPUs execute serially, which is how about 80-90% of software runs.
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post #15 of 17
Quote:
Originally Posted by skatingrocker17 View Post
Sounds like a legitimate question.

Because a GPU is just that, a Graphics Processing Unit. Both CPUs and GPUs can encode video but usually a GPU can do it faster.

I'm sure someone will offer a more in depth answer.
This.

Though I can offer a bit of insight here.

A 9800GT produces 336 Gflops (Measurement of processing power). The Phenom II 1090T @ 4GHz produces anywhere from 75-100 Gflops.

A CPU is amazing for what it does because it require so little power in order to operate at the level that it does. A GPU is very powerful, several magnitudes moreso than a CPU yet requires well over double the power usually. It's a tossup in most cases. A 5770 was shown to be capable of rendering a 1080p video in 29 seconds whereas an i7 920 took nearly a minute, and the 5770 draws less power.

It's just impractical in most cases. Not only that but it's rather difficult to change how a GPU works. AMD is working on doing something very similar to what you are asking about. They're learning to "fuse" a CPU and GPU into the same die area and use the CPU for the primary work, but offloading it to the GPU that's built in to give a major helping hand.
     
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post #16 of 17
Have you checked out the new sandy chip? The direction intel is going we might one day not even need GPU's. But i doubt they will eventually not exist because co. make to much money off of them.
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post #17 of 17
Error: the question is too complicated. Please try later.
    
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