What is the value of logical cores ( HT) for chess ?

[mbabigian]

Ryzen Master shows anything under 80 degrees in green - so Asus and AMD are not too worried about it.

Heat is the enemy of all integrated circuits, the hotter they run, the faster they will wear out. If I could run at 40C, I would. 80C is within spec, yes, but it shouldn't run that high, AND, if you run 64 threads which your machine should support with ease, you are hitting 95! AMD designed this CPU to run with 64 pegged threads if you so choose to run it that way. You should not have to willingly reduce the load to avoid damage.

I have a laptop (desktop replacement style). It has a desktop not mobile processor in it (3970X). The thermal max on that older Intel CPU is 95C, if I use the hyperthreads, it runs at 95C. Whenever I've needed to do that, I've either put it outside in winter (often around 20f outside) or on top of an air conditioning vent in summer. Either method keeps it from even getting close to 95C. That poorly ventilated laptop is the only thing I've ever owned that could hit 95C.

If I ever play in a Centaur tournament again, I'll try Larry's 48 thread setup. Otherwise, I'll use the hyperthreads to do other mundane things as my machine works on my assigned tasks. 15 ELO could be important in a tourney, but not in daily use.

[mwyoung]

Ryzen Master shows anything under 80 degrees in green - so Asus and AMD are not too worried about it.

Heat is the enemy of all integrated circuits, the hotter they run, the faster they will wear out. If I could run at 40C, I would. 80C is within spec, yes, but it shouldn't run that high, AND, if you run 64 threads which your machine should support with ease, you are hitting 95! AMD designed this CPU to run with 64 pegged threads if you so choose to run it that way. You should not have to willingly reduce the load to avoid damage.

I have a laptop (desktop replacement style). It has a desktop not mobile processor in it (3970X). The thermal max on that older Intel CPU is 95C, if I use the hyperthreads, it runs at 95C. Whenever I've needed to do that, I've either put it outside in winter (often around 20f outside) or on top of an air conditioning vent in summer. Either method keeps it from even getting close to 95C. That poorly ventilated laptop is the only thing I've ever owned that could hit 95C.

If I ever play in a Centaur tournament again, I'll try Larry's 48 thread setup. Otherwise, I'll use the hyperthreads to do other mundane things as my machine works on my assigned tasks. 15 ELO could be important in a tourney, but not in daily use.

What cooler does he have with that temp? My guess would be a air cooler, or a AIO that does not have full die coverage. That would be poor hardware selection. Engine testing is brutal and will find weaknesses in computer builds.

[Alayan]

80°C is not a dangerous operating temperature.

The Zen 2 proc are on a smaller node, which means they despite being more energy efficient, they have greater heat density, making them harder to cool.

However, that's not a great temp with an AIO.

[mwyoung]

80°C is not a dangerous operating temperature.

The Zen 2 proc are on a smaller node, which means they despite being more energy efficient, they have greater heat density, making them harder to cool.

However, that's not a great temp with an AIO.

What is concerning is he is not running under full load with that temp. This is a easy fix with the correct cooler, or fans, or case design. Not sure without seeing the design, but this is fixable.

[mwyoung]

80°C is not a dangerous operating temperature.

The Zen 2 proc are on a smaller node, which means they despite being more energy efficient, they have greater heat density, making them harder to cool.

However, that's not a great temp with an AIO.

We maybe assuming too much here. Mike needs to go into bios, or if he has the asus apps loaded. And set his AIO fans to 100%. And see what temp his CPU runs at during full load. This fix maybe as simple as adjusting his fan curve. If this does not fix the problem, he needs better cooling.

[mbabigian]

There should be no possible way to hit 95C without something being terribly wrong. If he went to any of the overclocker's forums and posted "I hit 95C when stress testing" he'd have an avalanche of people telling him something is not right.

I hope he takes it seriously, but it's up to him.

[MikeB]

80°C is not a dangerous operating temperature.

The Zen 2 proc are on a smaller node, which means they despite being more energy efficient, they have greater heat density, making them harder to cool.

However, that's not a great temp with an AIO.

We maybe assuming too much here. Mike needs to go into bios, or if he has the asus apps loaded. And set his AIO fans to 100%. And see what temp his CPU runs at during full load. This fix maybe as simple as adjusting his fan curve. If this does not fix the problem, he needs better cooling.

I'm good now - for me,
I just locked the speed 3725 Mhz no tubro boost or SMT for me , that's by choice for how I use it - either analyis or testing ideas- adjusted the fans and it's humming quietly just under 60C. For me, running it a locked speed without hyper threading reduces the statistical noise in testing. I don't need the machine to be maxed out,but I do hope to have this machine a long time. And I will say, I cannot recommend my builder and just leave it at that.
https://www.dropbox.com/s/juz4md6yo0exo ... 1.JPG?dl=0

[mbabigian]

I finished assembly on Jan 25th and it took most of the next week to install software, move data from the old computers and set up my dev environment. Since then I've had it running 32 to 44 threads at 4.1+ghz 24/7. I run with PBO on.

Would you mind mentioning the builder? I have friends that are afraid of building and I'd like to add them to my "run, don't walk" list.

[MikeB]

I finished assembly on Jan 25th and it took most of the next week to install software, move data from the old computers and set up my dev environment. Since then I've had it running 32 to 44 threads at 4.1+ghz 24/7. I run with PBO on.

Would you mind mentioning the builder? I have friends that are afraid of building and I'd like to add them to my "run, don't walk" list.

You wouldn’t happen to be be on the US east coast - I would like somebody who would know what their doing to take a look. Used to build my own PC in their early 90’s - But you were only laying out a few hundred dollars - something went wrong , no big deal. Totally different animal when you’re laying out a few thousand , hence the reason I had a system build. My machine was a lemon for the get go - it was never properly stressed test and and it was crashing out of the box after 10 minutes. It was initially Linux - but there is no available release kernel that actually supports RTX 2060 Super( there will be soon with Ubuntu 20.4 LTS) , the fact that it ran at was just by chance. Had it converted to Windows 10 , but I always thought 80c was a little hot , since anytime it went over 80C - bad things were happening. Much easier to sleep at night , knowing it’s not over 60c if leave it on 24x7 going full tilt. My recommendation is to avoid getting a theadripper machine from Velocity Micro - can’t speak to their other offerings. I have a lemon , but there is no lemon law for a computer like there is for cars. My motherboard will take a 3990x and after a 2 or three years , I will ha e somebody who knows what they Are doing , do the upgrade. By then , that chip will be down to $2k or less and it will be a nice upgrade .

[Zenmastur]

I finished assembly on Jan 25th and it took most of the next week to install software, move data from the old computers and set up my dev environment. Since then I've had it running 32 to 44 threads at 4.1+ghz 24/7. I run with PBO on.

Would you mind mentioning the builder? I have friends that are afraid of building and I'd like to add them to my "run, don't walk" list.

You wouldn’t happen to be be on the US east coast - I would like somebody who would know what their doing to take a look. Used to build my own PC in their early 90’s - But you were only laying out a few hundred dollars - something went wrong , no big deal. Totally different animal when you’re laying out a few thousand , hence the reason I had a system build. My machine was a lemon for the get go - it was never properly stressed test and and it was crashing out of the box after 10 minutes. It was initially Linux - but there is no available release kernel that actually supports RTX 2060 Super( there will be soon with Ubuntu 20.4 LTS) , the fact that it ran at was just by chance. Had it converted to Windows 10 , but I always thought 80c was a little hot , since anytime it went over 80C - bad things were happening. Much easier to sleep at night , knowing it’s not over 60c if leave it on 24x7 going full tilt. My recommendation is to avoid getting a theadripper machine from Velocity Micro - can’t speak to their other offerings. I have a lemon , but there is no lemon law for a computer like there is for cars. My motherboard will take a 3990x and after a 2 or three years , I will ha e somebody who knows what they Are doing , do the upgrade. By then , that chip will be down to $2k or less and it will be a nice upgrade .

I would get some thermal Grizzly. When It arrives dismount the cooler and then re-seat the processor in the socket. Improperly seating and torquing the screws in the right order is the number one cause of issues with Threadripper chips. If it's not done properly it can AND DOES generate all kinds of issues. You don't need to take the CPU out of the socket, just loosen the screws in the proper (reverse) order (the order is stamped in to the metal shield on the socket.) and then re-tighten them in the proper order and make sure they are all snug. Then apply thermal grizzly ( after the top of the cpu has been cleaned of the old thermal compound). Then remount the cooler.

This procedure solves 95% of the issues with flaky behavior. i.e random reboots and other weird behavior that has no apparent cause.

Regards,

Zenmastur