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CPUs ... why are they so far behind? - Page 3

post #21 of 24
GPU design is much simpler when compared to a CPU. GPUs are manycores running in parallel performing mathematical transformations.


CPUs have to do path prediction and process very complex single threads. You can't just compare the two.
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post #22 of 24
GPU:
Very good at calculating let's say XYZ coordinates.
After that mapping colors and textures on it.
So very simple mathological calculations.

It's what they do best.

GPGPU:
Its still best at what a GPU does but it can do more.

CPU:
Has to be able to calculate everything you throw at it.
If you put sound and gfx on software processing it'll be slower but your cpu can do it YAY!!!.
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post #23 of 24
Quote:
Originally Posted by mactard View Post
An audit of Wikipedia by Wired Magazine uncovered that it's as accurate as Encyclopedia Britannica.
Only about 3 errors a page


The GPU and the CPU will eventually find their way into being the same entity, both processing and rendering in one chip. The instruction set of a CPU is much larger then that of a GPU, making the CPU much more adaptable to any and all programs. However, some financial companies have discovered that GPU's can do basic calculations on orders of magnitude faster than CPU's, and actually do much of their work on them. It is still very limited, but the technology is evolving and one day we'll only be buying GPGPU's.
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post #24 of 24
Baaasically...a GPU is missing a Cache, a Vector Processor, a FPU, a branch predictor, and an OoOE step. They work for some specialized code but not for most code that we run.

All of these things+a lot more make CPUs much faster at general purpose code then a GPU could ever dream to be.
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