I thought I would start up a thread to talk about the "other" CPU. :)

The topic has been popular over at Seti@Home maybe it will be popular here.

Tom M

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This project is clearly cpu oriented and seems to be utilizing a lot of "external" to the application data sources instead of downloading a stand alone app and a packet of data to process and then uploading the results.

Assuming my characterization of the project is fairly accurate would you say a AMD 2700 (8c/16t)[or 2700x] be a better buy over a 2600 (6c/12t)?
There have been significant price declines in the 2600/2700 new cpu market.

I do understand the Ryzen/Threadripper 3000 series is significantly better in terms of power efficiency (I run a 3950x).

But if I was building a "new" system and were sensitive (but not completely rigid) to my capital costs which would be "better"?

Tom M

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Assuming my characterization of the project is fairly accurate would you say a AMD 2700 (8c/16t)[or 2700x] be a better buy over a 2600 (6c/12t)?
There have been significant price declines in the 2600/2700 new cpu market.

If it was me, the 8c/16t sells itself over the 6c/12t CPU, but with the price drops recently even moreso. It'd be entirely priceperformance for me
Taking a look at my usual suppliers, is a 2600 even available any more? Not with them

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From the specs, a TR2900x has only 8 cores (16 threads), running at 3,1Ghz.
Not a lot of info online about it.
The Threadripper 2950x pretty much seems to be a Ryzen 9 3900x on negative steroids.. I mean, it's identical but at 12nm vs 7nm for the 3900x.
I presume the only difference is the power consumption.
The Ryzen 9 (rated at 105W TDP) actually runs closer to 125-145W, and under full load still doesn't hit anywhere near 4,2Ghz boost frequencies (more like 3,6-3,8Ghz). I think the same could be said about the TR 2950x at 180W (it probably runs closer to 225W).

Things to consider when you compare these 2 (and the 2950x is newer than the 2900x):
The 2950x does run up to 2960 or so Mhz Memory speed. The 3900x gets up to 3200Mhz, but people managed to make it work with overclocked to 3600Mhz memory as well.

The annual running cost of the TR2950x would be ~$60+ more than a 3900x. You'd have to factor this into your calculations.

The other CPU? More like the main one these days!

Between a 2600 and a 2700, the 2700 is simply better for distributed computing. More cores, more WUs.

Remember that the Threadripper has 4 memory channels, while a Ryzen is dual channel, for memory intensive project maybe it would help (no idea about how that really matters in Rosetta)

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The other CPU? More like the main one these days!

Between a 2600 and a 2700, the 2700 is simply better for distributed computing. More cores, more WUs.

Remember that the Threadripper has 4 memory channels, while a Ryzen is dual channel, for memory intensive project maybe it would help (no idea about how that really matters in Rosetta)

Now this is the question I have. How much (if any) difference is there with this project in terms of dual-channel vs quad-channel memory setups. I'm looking to build a few rigs for this project and would love to have such information to plan my builds.

The other CPU? More like the main one these days!

Between a 2600 and a 2700, the 2700 is simply better for distributed computing. More cores, more WUs.

Remember that the Threadripper has 4 memory channels, while a Ryzen is dual channel, for memory intensive project maybe it would help (no idea about how that really matters in Rosetta)

Now this is the question I have. How much (if any) difference is there with this project in terms of dual-channel vs quad-channel memory setups. I'm looking to build a few rigs for this project and would love to have such information to plan my builds.

That is a great question. I wish I had a robust answer.
On the grounds of theory alone more memory channels should allow a "high cpu/thread count" system to access and run "faster" on the same speed memory chips.

The brand/model of memory chips I am running are leftover from my Amd 2990wx experiment and so do not appear to be "slowing" my machine down visibly BUT I probably can't tell because Rosetta is a "time invariant" task project and it usually takes upwards to 6 weeks to have your RAC stabilize. I have been crunching Rosetti at this high level maybe 3 weeks. I have no clue what it will stabilize at. I am hopeful to get up well past 50,000 but I am not running all my CPU threads on Rosetta.

My cpus run a mix of 4 projects with Rosetta running 18 threads. I also have all the turbo/turbo-like functions of the CPU disabled in the bios. So it is munching along at about 3.2 Ghz.

Tom M

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I am hoping to get up well past 50,000 but I am not running all my CPU threads on Rosetta.

Make that up to 20,000 RAC or so. I recently did a calculation based on the credits I was getting and came out with an estimated 19,xxxx

Tom M

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Hi,
I know the performance is in the Ryzen 3700x etc, however how does the Ryzen 5 3400G compare these days? Especially in performance. I'm looking at throwing a small (think Lenovo think center micro) together. I want it to be small - not a tower - but have decent power. It will be replacing my old and faithful, yet in this day and age, power hungry, fx8350.
Thanks

I know the performance is in the Ryzen 3700x etc, however how does the Ryzen 5 3400G compare these days? Especially in performance.

Many BOINC project sites have a CPU statistics page where you can see how the various CPUs running project workloads compare. Here's a link to Rosetta@home's: https://boinc.bakerlab.org/rosetta/cpu_list.php

Assuming that you're using 100% of your available threads, the Ryzen 5 3400G can do about 40 GFLOPS, whereas an FX-8350 can do about 26 GFLOPS. That would make the 3400G almost twice as fast, assuming that both processors are running at stock speeds.

Hi all! For 64 core EPYC is normal to have so unnormal RAC ? It's legal?
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=4220997

I know the performance is in the Ryzen 3700x etc, however how does the Ryzen 5 3400G compare these days? Especially in performance.
I'm looking at throwing a small (think Lenovo think center micro) together. I want it to be small - not a tower - but have decent power.
It will be replacing my old and faithful, yet in this day and age, power hungry, fx8350.

I'm in a similar place with an FX8370 looking into that same territory. The 3400G is an APU. I'd even prefer a 3600 to one of those, but 3700X looks the right place depending on the exact price point when I commit.
I also use a Lenovo Thinkcentre at work (I7-4770S currently under lockdown). It works well, but looking inside it, the word I'd use to describe it is "bare bones"

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Hi all! For 64 core EPYC is normal to have so unnormal RAC ? It's legal?
https://boinc.bakerlab.org/rosetta/show_host_detail.php?hostid=4220997

He has access to a lot of machines but due to how they are connected, having everything appear as a single host is much quicker. So no, this is not the RAC of a single EPYC host, it's instead the RAC of a lot of machines.

It was explained in this thread, go a bit down and you will find the answer: https://boinc.bakerlab.org/rosetta/forum_thread.php?id=13833

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