5 ms·

It's not actually that hard. AMD didn't cheap out on the integrate heat spreader (like Intel did) and it's HUGE. Commodity waterclocks on newegg already handl

by sliken 8y ago

It's not actually that hard. AMD didn't cheap out on the integrate heat spreader (like Intel did) and it's HUGE. Commodity waterclocks on newegg already handle "500+ watts". I'm sure there will be a wide variety of solutions for 250 watts by the time they ship. It's really not that much power, many cases these days are designed for 3 or more 300 watt GPUs.

loeg 8y ago
Just for example, my first gen TR has this guy on it[0], which is already spec'd for 300W. I would think power delivery on existing motherboards only designed for 180W would be a bigger problem. But again, any board targeted at overclockers should already be prepared to handle at least 250W. The older boards will mostly just not support as much overclocking of the new, larger part. [0]: https://www.arctic.ac/us_en/liquid-freezer-360.html https://www.arctic.ac/us_en/liquid-freezer-360.html
- namibj 8y ago
  With a good cooler you might be limited by the current handling of the socket pins. I'm interested in what solutions will be found to circumvent that issue.
  - opencl 8y ago
    I think the solution AMD found to circumvent that issue was using 4094 pins.
    - namibj 8y ago
      I looked, and found the limit to be a little over 300W, based on research into LGA and AMD's publications pertaining TR4.
- dragontamer 8y ago
  I hate to be the bearer of bad news, but that cooler is smaller than the Threadripper socket. https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/amd-threadripper-coldplate-1.jpg https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/... There are "proper" TR4 coolers, such as the Noctua TR4-specific air cooler which actually covers the entire socket, for a maximum connection between the radiator and socket. https://i.imgur.com/R0WbTSa.png https://i.imgur.com/R0WbTSa.png Pictured there is the Enermax TR4-specific liquid-cooler. There is another one on the market somewhere, I forgot the name though. Anyway, the bigger heat-plate makes a big difference. People have measured somewhere on the order of ~10C to ~20C cooler.
  - loeg 8y ago
    > I hate to be the bearer of bad news, but that cooler is smaller than the Threadripper socket. Yes, I am aware of that (it's not news to me). The cooler is smaller than the integrated heat spreader (the visible metal cover on the top of the CPU), but it does fully cover all four (two active) CCX dies and conducts plenty of heat away. I know you can get TR4-shaped coolers today, and they perform marginally better, but they were not available at the time. With all cores busy, this thing keeps the CPU at 50°C or less in ~25°C ambient (stock clocks/boost). That is totally sufficient — the CPU is rated to 68°C (and oddly, the Ryzen 1800X is rated to 95°C, so it's unclear why the TR isn't rated up to 95°C as well). > Anyway, the bigger heat-plate makes a big difference. People have measured somewhere on the order of ~10C to ~20C cooler. Yes, absolutely it makes a difference; something like ~10°C, at least under fairly common conditions, from my reading. 20°C probably indicates an incorrectly installed cooler.
    - dragontamer 8y ago
      > Yes, I am aware of that (it's not news to me). The cooler is smaller than the integrated heat spreader (the visible metal cover on the top of the CPU), but it does fully cover all four (two active) CCX dies and conducts plenty of heat away. https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/amd-threadripper-grid-2.jpg https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/... Technically covers, but you can see that the screw-holes of the cooler go right over the dies. So you've got some air-pockets over the most-important parts to cool. > Yes, absolutely it makes a difference; something like ~10°C, at least under fairly common conditions, from my reading. 20°C probably indicates an incorrectly installed cooler. I was looking at overclocked numbers at the ~20C metrics btw. 10C was closer to the "normal use" situation. Overclocking adds a lot of heat, and benefits from a cooler with a larger connection.
      - loeg 8y ago
        > Technically covers, but you can see that the screw-holes of the cooler go right over the dies. So you've got some air-pockets over the most-important parts to cool. Sorry, I don't see any screw holes overlapping dies in that image; can you point them out? Also, won't screw holes generally have screws in them, which are both conductive and not air?

by sliken 8y ago

loeg 8y ago

Just for example, my first gen TR has this guy on it[0], which is already spec'd for 300W. I would think power delivery on existing motherboards only designed for 180W would be a bigger problem. But again, any board targeted at overclockers should already be prepared to handle at least 250W. The older boards will mostly just not support as much overclocking of the new, larger part. [0]: https://www.arctic.ac/us_en/liquid-freezer-360.html https://www.arctic.ac/us_en/liquid-freezer-360.html

namibj 8y ago
With a good cooler you might be limited by the current handling of the socket pins. I'm interested in what solutions will be found to circumvent that issue.
- opencl 8y ago
  I think the solution AMD found to circumvent that issue was using 4094 pins.
  - namibj 8y ago
    I looked, and found the limit to be a little over 300W, based on research into LGA and AMD's publications pertaining TR4.
dragontamer 8y ago
I hate to be the bearer of bad news, but that cooler is smaller than the Threadripper socket. https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/amd-threadripper-coldplate-1.jpg https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/... There are "proper" TR4 coolers, such as the Noctua TR4-specific air cooler which actually covers the entire socket, for a maximum connection between the radiator and socket. https://i.imgur.com/R0WbTSa.png https://i.imgur.com/R0WbTSa.png Pictured there is the Enermax TR4-specific liquid-cooler. There is another one on the market somewhere, I forgot the name though. Anyway, the bigger heat-plate makes a big difference. People have measured somewhere on the order of ~10C to ~20C cooler.
- loeg 8y ago
  > I hate to be the bearer of bad news, but that cooler is smaller than the Threadripper socket. Yes, I am aware of that (it's not news to me). The cooler is smaller than the integrated heat spreader (the visible metal cover on the top of the CPU), but it does fully cover all four (two active) CCX dies and conducts plenty of heat away. I know you can get TR4-shaped coolers today, and they perform marginally better, but they were not available at the time. With all cores busy, this thing keeps the CPU at 50°C or less in ~25°C ambient (stock clocks/boost). That is totally sufficient — the CPU is rated to 68°C (and oddly, the Ryzen 1800X is rated to 95°C, so it's unclear why the TR isn't rated up to 95°C as well). > Anyway, the bigger heat-plate makes a big difference. People have measured somewhere on the order of ~10C to ~20C cooler. Yes, absolutely it makes a difference; something like ~10°C, at least under fairly common conditions, from my reading. 20°C probably indicates an incorrectly installed cooler.
  - dragontamer 8y ago
    > Yes, I am aware of that (it's not news to me). The cooler is smaller than the integrated heat spreader (the visible metal cover on the top of the CPU), but it does fully cover all four (two active) CCX dies and conducts plenty of heat away. https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/amd-threadripper-grid-2.jpg https://www.gamersnexus.net/images/media/2017/CPUs/tr-1950x/... Technically covers, but you can see that the screw-holes of the cooler go right over the dies. So you've got some air-pockets over the most-important parts to cool. > Yes, absolutely it makes a difference; something like ~10°C, at least under fairly common conditions, from my reading. 20°C probably indicates an incorrectly installed cooler. I was looking at overclocked numbers at the ~20C metrics btw. 10C was closer to the "normal use" situation. Overclocking adds a lot of heat, and benefits from a cooler with a larger connection.
    - loeg 8y ago
      > Technically covers, but you can see that the screw-holes of the cooler go right over the dies. So you've got some air-pockets over the most-important parts to cool. Sorry, I don't see any screw holes overlapping dies in that image; can you point them out? Also, won't screw holes generally have screws in them, which are both conductive and not air?