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N3OEA, thanks for your interesting note.
A question: does AMD Ryzen and others AMD take advantage by CUDA?
It seems to me to remember that only Intel CPUs are taking full
CUDA usage and advantages; was it true?
73 44 Augusto HB9TZA /I2JJR
Il 04/07/2019 03:42, BobS via Groups.Io
As another poster has commented, comparing Intel processors across
the generations can be dangerous. Being that the main thing
you're looking to do is run high-powered SDR software, I'm afraid
you cannot do it on the cheap. SDR-Radio is a quite intensive
program simply because it has to be. It's processing 2Mbps or
more of data, running gobs of Fourier transformations, etc.
That's why CUDA is so important as the deep computational
algorithms are offloaded to the GPU.
You mentioned an Intel Core i5-4570. That is a processor from Q2
2013, so it's six years old. From the 4 in the model number, you
know it's a 4th generation variant. Intel is currently shipping
generation 9, although that's relatively new. Generation 8 chips
are still being sold across all manufacturers. As a general
guideline, for doing heavy math, you should not go more than one
or two generations back.
A CPU from 2013 is just not suited for top-end software from 2019
The CUDA/GPU benefit is significant, but you can get around it by
paying in CPU usage. I have one computer with a Nvidia GPU and
CUDA and a Microsoft Surface, which uses Intel graphics. When I
run SDR-Radio on the machine with CUDA, I barely know it's
running. When I run it on my Surface, I'm generally around
25%-40% CPU usage, depending on how much data (bandwidth) I'm
processing. It's not a sin to have moderate to high CPU usage,
and I'm not affected in my other work. But I do take a
significant hit by not having CUDA.
If you want the best for SDR-Radio, buy a modern CPU (look at an
AMD Ryzen) and absolutely get a decent video card. I wish you the
best! I realize that isn't the answer you're seeking.
-- Bob (N3OEA)