4 ms·

That's not necessarily correct. You can passively cool threadrippers if you underclock them enough and have good ventilation in case.

bayindirh 6y ago
If my only interest would be ECC, I might do that but, I develop scientific software for research purposes. I need every bit of performance from my system. In my case loading means maxing out all cores and extended period of time can be anything from five minutes to hours.
- mlyle 6y ago
  The problem is-- you can't compare the TDP nor even the system cooling design guidelines between AMD and Intel. Both are optimistic lies, but-- if you look at the documents it looks like currently AMD needs more cooling, but actually dissipates less power in most cases and definitely has higher performance/watt.
  - bayindirh 6y ago
    > The problem is-- you can't compare the TDP nor even the system cooling design guidelines between AMD and Intel. Doesn't matter for me since I'm not interested in comparing them. > Both are optimistic lies, but-- if you look at the documents it looks like currently AMD needs more cooling, but actually dissipates less power in most cases and definitely has higher performance/watt. I'm aware of the situation, and I always inflate the numbers 10-15% to increase headroom in my systems. The code I'm running is not a most case code. A FPU heavy, "I will abuse all your cores and memory bandwidth" type, heavily optimized scientific software. I can sometimes hear that my system is swearing at me for repeatedly running for tests. I don't like to add this paragraph but, I'm one of the administrators of one of the biggest HPC clusters in my country. I know how a system can surpass its TDP or how can CPU manufacturers skew this TDP numbers to fit in envelopes. We make these servers blow flames from their exhausts.

4 ms·

That's not necessarily correct. You can passively cool threadrippers if you underclock them enough and have good ventilation in case.

by 411111111111111 6y ago

bayindirh 6y ago
If my only interest would be ECC, I might do that but, I develop scientific software for research purposes. I need every bit of performance from my system. In my case loading means maxing out all cores and extended period of time can be anything from five minutes to hours.
- mlyle 6y ago
  The problem is-- you can't compare the TDP nor even the system cooling design guidelines between AMD and Intel. Both are optimistic lies, but-- if you look at the documents it looks like currently AMD needs more cooling, but actually dissipates less power in most cases and definitely has higher performance/watt.
  - bayindirh 6y ago
    > The problem is-- you can't compare the TDP nor even the system cooling design guidelines between AMD and Intel. Doesn't matter for me since I'm not interested in comparing them. > Both are optimistic lies, but-- if you look at the documents it looks like currently AMD needs more cooling, but actually dissipates less power in most cases and definitely has higher performance/watt. I'm aware of the situation, and I always inflate the numbers 10-15% to increase headroom in my systems. The code I'm running is not a most case code. A FPU heavy, "I will abuse all your cores and memory bandwidth" type, heavily optimized scientific software. I can sometimes hear that my system is swearing at me for repeatedly running for tests. I don't like to add this paragraph but, I'm one of the administrators of one of the biggest HPC clusters in my country. I know how a system can surpass its TDP or how can CPU manufacturers skew this TDP numbers to fit in envelopes. We make these servers blow flames from their exhausts.