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World Community Grid Forums
Category: Active Research
Forum: OpenPandemics - COVID-19 Project
Thread: CPU cache & performance |
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Thread Status: Active Total posts in this thread: 31
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verlyol-belgium
Cruncher Belgium Joined: Jul 24, 2008 Post Count: 44 Status: Offline Project Badges: 
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Thank you for the performance comparison .... It would be interesting to know the consumption of the Ryzen 3700x and 3900x ... I have a Ryzen 5 1600 and a 2600 which are easy for undervolting, with very low consumption, without touch frequencies
---------------------------------------- Ryzen 5 3600 Ryzen 7 7800 x3d |
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges: 
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Thank you for the performance comparison .... It would be interesting to know the consumption of the Ryzen 3700x and 3900x ... I have a Ryzen 5 1600 and a 2600 which are easy for undervolting, with very low consumption, without touch frequencies These are measured at the wall with a gold/platinum power supply, no GPU, just one SSD: Ryzen 1700 3.0 GHz: 82W Ryzen 2700 3.3 GHz: 93W Ryzen 3700X 3.6 GHz: 87W Ryzen 3900X 3.8 GHz: 130W The 1700 and 2700 is set to a fixed frequency manually. The 3900X is set to 65W ECO mode, which is the preferred solution for 3000 series, it's much more reliable and easier than manual underclocking/undervolting. With the eco mode, if I'm gaming/browsing the CPU turbos up to max turbo (4.5GHz I think) so the system is very snappy, when crunching it downclocks to a comfortable 3.8 GHz.  |
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verlyol-belgium
Cruncher Belgium Joined: Jul 24, 2008 Post Count: 44 Status: Offline Project Badges:
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Thx for the information.....The 3900x seems to have a reasonable consumption...
----------------------------------------Ryzen 5 3600 Ryzen 7 7800 x3d |
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fuzzydice555
Advanced Cruncher Joined: Mar 25, 2015 Post Count: 89 Status: Offline Project Badges:
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All Zen CPU's depend heavily on Infinity fabric and memory speed. Preferred 1:1 ratio. For example a Fabric speed of 1600MHz and 1:1 Mem at 1600MHz(=3200MHz DDR). You are missing 10-20% performance at DDR2133. That is the difference between a CPU upgrade. Four ranks (4xSR or 2xDR) can in some cases gain an extra 5-10% compared to two Dimms single rank. 1000-serie Zen CPU's do not support dual or four rank that well on the memory controller at high speed. Sweetspot is at DDR3000/3200. However, all Zen2 3000 CPU's will support DDR4 3733MHz, Fclk/Memclk 1866/3733. 1900/3800 depending on the CPU if you are lucky. I've tried memory overclock twice on Ryzen, once on B350, once on B450 and ran into trouble both times. First with 2400 MHz modules the whole system was unstable. Then with 3000 MHz modules, the PC was stable on on all benchmarks, torture tests, etc. After a month or so, I was checking the project results page and noticed that for Universe@home (if I remember correctly) half of my work units errored out. After returning the memory to the standard 2133, the errors no longer occurred. So for me, a 10-20% possible gain is not worth the chance of returning corrupt work units. With a project quorum of 1, these calculation errors may not even be noticed. In my opinion overclocking is fine for gaming, however for mission critical systems it's a big no-no. |
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Tamagoch
Cruncher Ukraine Joined: Jul 21, 2007 Post Count: 35 Status: Offline Project Badges: 
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I'm feeling so ancient and a bit wild with my AM3 old PC farm upgrading single-core Semprons to the triple-core Athlons ($5 worth) that all are so much outperformed by just one modern CPU ))
well, it's my job to make the best from from the available and we're just keep fighting covid-19 - yeah! ) |
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3315 Status: Offline Project Badges: 
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I'm feeling so ancient and a bit wild with my AM3 old PC farm upgrading single-core Semprons to the triple-core Athlons ($5 worth) that all are so much outperformed by just one modern CPU )) well, it's my job to make the best from from the available and we're just keep fighting covid-19 - yeah! ) Every little bit counts, up to a point IMO (I wouldn't run stuff like Pentium's even if power was free and renewable). I sometimes "dream" about buying all those cheap used AM3 motherboards and Athlons II and Phenoms II or even FX-8xxx rather than buy new stuff. But I wouldn't want to pay for all that electricity - I mean, I have one 4 core A8-6500 which I'm not even running, mostly because of the power cost.  - AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W - AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W - AMD Ryzen 7 7730U 8C/16T 3.0 GHz |
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yoerik
Senior Cruncher Canada Joined: Mar 24, 2020 Post Count: 413 Status: Offline Project Badges:
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I'm feeling so ancient and a bit wild with my AM3 old PC farm upgrading single-core Semprons to the triple-core Athlons ($5 worth) that all are so much outperformed by just one modern CPU )) well, it's my job to make the best from from the available and we're just keep fighting covid-19 - yeah! ) Every little bit counts, up to a point IMO (I wouldn't run stuff like Pentium's even if power was free and renewable). I sometimes "dream" about buying all those cheap used AM3 motherboards and Athlons II and Phenoms II or even FX-8xxx rather than buy new stuff. But I wouldn't want to pay for all that electricity - I mean, I have one 4 core A8-6500 which I'm not even running, mostly because of the power cost. *Sweats with intel Pentium*  |
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3315 Status: Offline Project Badges:
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I'm feeling so ancient and a bit wild with my AM3 old PC farm upgrading single-core Semprons to the triple-core Athlons ($5 worth) that all are so much outperformed by just one modern CPU )) well, it's my job to make the best from from the available and we're just keep fighting covid-19 - yeah! ) Every little bit counts, up to a point IMO (I wouldn't run stuff like Pentium's even if power was free and renewable). I sometimes "dream" about buying all those cheap used AM3 motherboards and Athlons II and Phenoms II or even FX-8xxx rather than buy new stuff. But I wouldn't want to pay for all that electricity - I mean, I have one 4 core A8-6500 which I'm not even running, mostly because of the power cost. *Sweats with intel Pentium* :D I mean stuff like Pentium IV. The last one I had used 100 watts idle and 200 watts running a single WCG task. Years ago... - AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W - AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W - AMD Ryzen 7 7730U 8C/16T 3.0 GHz [Edit 1 times, last edit by Falconet at May 19, 2020 11:21:28 AM] |
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yoerik
Senior Cruncher Canada Joined: Mar 24, 2020 Post Count: 413 Status: Offline Project Badges:
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:D I mean stuff like Pentium IV. The last one I had used 100 watts idle and 200 watts running a single WCG task. Years ago... TBH I'm only able to do this because of reduced hydro rates due to COVID-19. I'd only be able to run my devices (2 laptops, 3 androids) 24/7 on weekends without the temporary change to rates. But wow, how technology evolves. The Pentium I'm using to type this rn, is quad-core and handles 4 tasks at once like a pro. I mean, it would be far better if I had a better CPU, but every little bit helps?  it caps out at 5 Watts, and doesn't break above 75 degrees Celsius (with the safe max being 90) [Edit 1 times, last edit by yoerik at May 19, 2020 11:26:25 AM] |
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Falconet
Master Cruncher Portugal Joined: Mar 9, 2009 Post Count: 3315 Status: Offline Project Badges:
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:D I mean stuff like Pentium IV. The last one I had used 100 watts idle and 200 watts running a single WCG task. Years ago... TBH I'm only able to do this because of reduced hydro rates due to COVID-19. I'd only be able to run my devices (2 laptops, 3 androids) 24/7 on weekends without the temporary change to rates. But wow, how technology evolves. The Pentium I'm using to type this rn, is quad-core and handles 4 tasks at once like a pro. I mean, it would be far better if I had a better CPU, but every little bit helps? it caps out at 5 Watts, and doesn't break above 75 degrees Celsius (with the safe max being 90) The Intel Z3740 tablet I have is also a quad-core and uses little power too. Not very fast (9-10 hours for OPN) but it has been running basically non-stop 24/7 since May 2018. The touchscreen is not working so it would be useless to me if not for WCG. Costs like just over €1 a month. I really like these little power devices. Also have an Intel N2807 2.1 GHz 2-core that uses 9 watts but I'm not running it right now. Maybe I need try it out again. (for a while a few years ago, I even shut down my main PC at the time, the A8-6500, and used the N2807 because it was so low power and I love efficiency) So yes, that Pentium looks great  , of course it helps!- AMD Ryzen 5 1600AF 6C/12T 3.2 GHz - 85W - AMD Ryzen 5 2500U 4C/8T 2.0 GHz - 28W - AMD Ryzen 7 7730U 8C/16T 3.0 GHz [Edit 3 times, last edit by Falconet at May 19, 2020 3:58:31 PM] |
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