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Woyta

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About Woyta

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  1. I did clean instal of OS. Just OS, drivers and browser. Win 7 pro. Crash after couple of hours. Win 10 LTSC 2019 seem stable. (Read no crash yet. I have not time this week to spend at PC.)
  2. Same problem on my Vega 56. I am running out of ideas. I have tried different version of drivers. Booth Bioses, downclock my ram to 2666mhz and default settings in MB Bios. And still crashes. PC is stable with R290x, RX550. Ryzen 5 1600 Asus Prime B350 plus 4x8gb 3200mz RAM (Corsair, G.Skill booth same Hynix chip) My PSU is 750w Enermax NAXN My first Vega was used reference card from Sapphire https://youtu.be/t3vM0AXWsks One video of crash. After RMA I got new Asus Vega 56 Strix and it is same again.
  3. Fixed an issue where the system fails to resume from Standby or Hibernation in DC mode with the insertion of a specific media card reader. Note that this issue only occurs in DC mode with Microsoft Windows XP. Well. I am not using XP. And I am not resuming from standby. I am trying to power it off (no hibernation) or restart it. I am playing with this problem for sime time and trying to find solution. I got this problem since SP1. Windows is fully updated. And its fresh instal too. Bios was latest. Now it is downgraded 2 versions just to test if there is a difference in behavior.
  4. I got problem with W7 on my old Laptop HP 2560P. From time around release of SP1 I got problem, that I cant turn laptop off or even restart. It alway just black out screen (backlight turned on) a stop reacting to any button. It seem, that there was some change in basic windows drivers I am not able to find. Laptop works fine with Linux (Lubuntu) or W7 without updates. Does somebody know what could cause that?
  5. Actualy there is small reserivoir inside. https://www.gamersnexus.net/guides/2539-taking-apart-an-evga-hybrid-liquid-cooler And that water flow is pathetitc compared any normal water pump. Not to mention mixing cooper and aluminium. Just stay away from AIO crap.
  6. D5 vario. 3 or 4. Depends on configuration of loop. 5 is noisy for me.
  7. Or bubbles hiting rotor. Air bubles management on AIO is not that good as on normal custom loop.
  8. Actualy Athlon XP is era when I start watercool my PC. Atlon XP 2500 Barton and Barton mobile ver my first watercooled CPUs I think. That was era of DIY waterblocks. Nowdays you can buy cheap chines waterblock and just make your mounting hardware. At this era we wer using water pumps for aquarims and gardens. Mostly from Eheim. Waterblock could be just piece of cooper plate and soldered cooper plate. But low restriction block from china would be better. Same watercooling setups does not even have radiator. Just large tank with water. Or we wer using heating cores from cars. They are less dense than cooling radiator. First comercial sets from Thermaltake were using cooling towers http://cpucoolingfans.weebly.com/zalman-cpu-water-cooling-system-reserator-1-v2-intel-p4-amd-sempron-amd64-review.html So yes. If you want to play with tools you can build "classic" watercooling loop for very cheap.
  9. Myom -Destiny.zipHi.

    Thanks for your response.

    I would really like to se how would this design  work atleast in wirtual world. Back in time it was big and expensive waterblock. But maybe it would fit todays threadripper cpus. :)

    I have design it with my friend while I was on high school. It was created in Pro Engeneer Wildfire 3 i think. Maybe I still have copy of educational version somewhere so I could try to conwert it to step files if needed.

    Files in latest folder are for ProE, Invertor and igs. I hope that  files  will work for you.

    1. Show previous comments  2 more
    2. PlayerX

      PlayerX

      So I ran the simulation today. I made some pictures and put that in a zip folder. If you want me to show some specific part of the simulation, just tell me.

      I ran the cooler for a 250W CPU (2990WX - has similar surface area to the one of your cooler)

       

      For the problem with the turbolence: the simulation was just not accurate enough for the numerical method to be stable in certain areas, so it converges to a solution, that doen't make a lot of sense. Aside from this digression into numerical mathematics 😅, this can be solved by making the small cells (like in the finite element method) smaller.

      After I ran this simulation, the results looked quite good, except that the inflow was not symmetrical (on one picture with the streamlines you can see it). I discovered that this is because of the boundary condition I had to set: in addition to a inlet and outlet it needed also some information about pressure. Therefore I set the surface on the inside of the fitting as source of a slight overpressure, but as the cylindrical surfaces are all separated into two parts on this model, it probably generates this pressure just on one side of the fitting making the flow assymetrical (more towards the front)

       

      Said that, here's the ZIP

    3. Woyta

      Woyta

      Thanks a lot.

      It shows what we  have been expecting (Good cooling under jets and ribs are mostly just for directing flow) and what we have to improve.

      Area  under middle fitting seems to profit from change shape to cone and shorter fitting. I see lot of restriction there.

      It look like  working concept for me. :)

       

      I would like to see it compared in lab in real  conditons with other blocks. too bad, that czech watercooling lab is closed for a years now (CTTL.cz). Very precise tests with lot of measurement. It has been bought by czech retailer and closed. Just few videos on youtube remains. For example: 

       

      CPU is replaced with heating element and switches are for sensors

       

    4. PlayerX

      PlayerX

      You're welcome.

      Yes, it definitely seems, that the area in the middle is the best cooled. However i moved the tubes up by half a millimeter (because at first i thought the simulation was not working because the gap was to small). So maybe the flow restriction of the cooler in that area could be a problem: Either your waterflow gets reduced compared to a standard cooler, or the pump has to generate a higher pressure. However otherwise to me this design approach seems to be really strong when it comes to cooling that specific area.

       

      I didn't even know, there was something like a watercooler-testing-lab. It's a pity that they closed it. This would have been an interesting way of testing the cooler and comparing it to the simulation.

  10. PlayerX: If I send you IGS files of Destiny waterblock (that one with jet) would you bee so kind and run simulations on it? I would like to see how we designed it 15 years ago. I asked coleaguges from simulation department but they are doing only crash simulations.
  11. Also turbulent flow removes more heat than laminar flow. But it is causing restriction. Acrylic is tricky it depends what type they are using. After some bed expirence with cracking, bending on water parts, i have switched to delrin/POM. For me it is way better material. Less risky.
  12. Yep. That video hurt my eyes. Really Linus missed DIY watercooling era? I am playing with watercooling since Athlon XP. I recomend to check this old site of czech creator Erty. It shows lot of history. http://erty.sweb.cz First blocks were just cooper pipes soldered to cooper plate. Thist method is still great for VRM cooler. I used to have later revisions of these blocks. Or second solution were blocks with few drilled holes that were crossing inside. Then we get acces to maching tools. Lathe were most common machine, many of us get acces. So design looks like christmass tree. For example this is waterblock from czech creator Erty. With more and more milling machines design starts to change. That is time before CNC become standart feature. So usualy there was only S shape inside. http://erty.sweb.cz/gpu/DSCN2302a.jpg Or few ribs. Still OK for high flow chipset block. There is still few guys who are still making block. Check http://www.aquacool.cz an look for discontinued models. They are showing progress too. I got his 4 ram stick cooler. There is lot of desigsn, I did some too. There are in atachement. Destiny should provide lot of performence but 15 years ago cost of manufacturing were to high for two students.
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