Don't bother with less than 16GB. 4GB is considered absolute minimum for
Windows 10 when you aren't doing anything.CPU bound includes memory speed too
as does cache matter so faster memory and bigger cache can help considerably.
This would be my criteria
#1 Minimum memory -- 16GB#2 Minimum disk space -- 500GB (SSD preferably)#3
Clock speed -- as much as you can afford
#4 Video -- as much as you can afford
Costs for clock speed go up dramatically at certain points so historically I've
stayed one step below the big jump and trading some fractional GHz speed for
more memory or better video is a good trade off.
de Mike W9MDB
On Friday, February 7, 2020, 02:40:07 PM CST, j...@comcast.net
<j...@comcast.net> wrote:
I’m in the market for a new computer, to be used largely for high-end WSJT-X
applications like maxed-out JT65 decoding on EME. (I’d also like performance
headroom to support possible features of future releases, like FT8 diversity
reception or even deeper decoding algorithms.) However, I don’t know the
WSJT-X code well enough to specify the computer (e.g., number of processor
cores, processor clock speed, cache sizes, memory size and speed, etc.).
I’ve read and understand the system requirements in the documentation; what I’m
asking for is the other end of the curve – specifications of the system that
would provide the best possible performance. The
https://sourceforge.net/p/wsjt/mailman/message/36745129/ thread pretty much
confirmed my expectations – clock speed typically rules over memory latency
(the processes are CPU-bound), and that there is only limited parallelism in
the code – but I’m wondering if numbers can be added to these generalizations.
At the moment I’m guessing that an 8-core machine with large caches, 4 GB DDR4
DRAM and the fastest clock speed I can find on the market, with a 64-bit OS,
would provide the best performance I can get -- but that’s just a guess. Can
anyone suggest a system offering better performance?
I’m operating under the assumption that decoding, specifically high-performance
JT65 EME decoding (but also FT8 diversity), places the greatest performance
requirements on the computer, but that’s also just a guess. Is there something
I am overlooking?
Thanks in advance, and 73,
Ed N4II.
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