The normal cpu benchmarks are worthless as predictors.  Look for something that is a reflection of the FPU capability.

That also explains why the Fx series were so poor.  They have 2 ALU for 1 shared FPU.  All of the Intels (and the newer Amd) are 1:1 ALU:FPU.

73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com

Before the RU started, I had CW Skimserv running on one receiver of the RP-16, and RTTY Skimserv running on the other, both with 8 bands x 192 KHz  I forgot to rearrange the RTTY bands when the contest started, although I did select the right Contest.ini contest.  What I wanted to comment on is the much improved CPU performance I'm seeing, compared with the last time I ran RTTY Skimserv in a contest.  Currently I have 339 decoders open on RTTY, and 444 spots in the last half hour. It's running 63-67% CPU, with occasional excursions into the 70s.  Meanwhile, CW is showing 410 decoders, with 340 spots in 30 minutes, and 6-8 percent CPU.

I don't know how to account for this improvement.  It is a new computer, running Windows 10 pro.  The processor is an  Intel Core i5-8400 CPU @ 2.80GHz, 2808 Mhz, 6 Core(s), 6 Logical Processor(s).  The machine has 16 GB of RAM and a 512 GB solid state drive, and the CPU has a passmark of almost 12,000.  My old Skimmer machine has an AMD FX-8350 with a passmark of almost 9,000, but there really is no comparison so far as RTTY performance.

I'm wondering if others have had similar experience with the i5 or similar, newer CPUs.  Perhaps they are better adapted to running the RTTY Skimserv code for some reason.

A postscript - I just cut the RTTY Skimserv back to 6 bands x 192KHz, and it is now drawing 55-61 percent CPU with 401 decoders and 425 spots in the last 30 minutes.

-- 

73, Pete N4ZR
Check out the Reverse Beacon Network 
at <http://reversebeacon.net>, now 
spotting RTTY activity worldwide. 
For spots, please use your favorite 
"retail" DX cluster.

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