AMD releases image of its ZEN4 processor

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Jul 20, 2022.

  1. Pictus

    Pictus Master Guru

    Messages:
    209
    Likes Received:
    78
    GPU:
    RX 5600 XT
    Silicone sealant can prevent that...
     
  2. Aura89

    Aura89 Ancient Guru

    Messages:
    8,347
    Likes Received:
    1,432
    GPU:
    -
    Proof that people will find anything to complain about.
     
    sykozis, PrMinisterGR, Airbud and 4 others like this.
  3. Maddness

    Maddness Ancient Guru

    Messages:
    2,144
    Likes Received:
    1,343
    GPU:
    3080 Aorus Xtreme
    :D:D:D
     
  4. Dimitrios1983

    Dimitrios1983 Master Guru

    Messages:
    333
    Likes Received:
    104
    GPU:
    RX580

  5. Yogi

    Yogi Master Guru

    Messages:
    309
    Likes Received:
    100
    GPU:
    Sapphire RX 6800
    Heat spreader thickness is inversely proportional to thermal transfer. All materials have a thermal resistance which increases with the thickness. Ideally you want as little material and joints between the heat generating components and the heat dissipating components. As always it's a more complicated subject than as I described.

    The only time a thick heat spreader is useful is for very short bursts where it can act as a heat sink to temporarily store the heat energy.
     
  6. thesaiyan

    thesaiyan New Member

    Messages:
    7
    Likes Received:
    1
    GPU:
    RTX 3070
    thermal resistance (or conductivity) is a property of the material and does not change with the thickness, however the heat transfer rate does decrease with more thickness as you mentioned.

    Interesting to see what the reasoning would be that led to this change vs past CPUs.
     
  7. Yogi

    Yogi Master Guru

    Messages:
    309
    Likes Received:
    100
    GPU:
    Sapphire RX 6800
    To get increasingly pedantic :p, thermal resistance and conductivity are not the same. Thermal resistance and conductance are the inverse of each other and both are thickness dependent. Thermal conductivity is independent of thickness. But we both get the picture.
     
  8. TLD LARS

    TLD LARS Master Guru

    Messages:
    452
    Likes Received:
    178
    GPU:
    AMD 6900XT
    The goal with the heatspreader is to spread heat from a 1cm x 1cm square (CPU die) to a 5cm x 5cm square (heatspreader).
    The total heat generated by the CPU is the same, but the larger contact surface makes it much easier to transfer the heat to a cooler.

    1cm x 1cm surface contact needs liquid metal or solder to transfer 200W of heat.
    A large surface like a threadripper 10cm x 7cm (guessing dimensions) with 200W could be fine with mid range thermal paste, top quality paste would still be better, but the gain is smaller.

    Try and feel a GPU backplate, if it is thin the heat will only transfer to a area about 1cm away from the heat source, because the plate can not conduct the heat good enough to a wider area.
    This is also why good pre heatpipe coolers mostly have a big fat bottom plate, to transfer heat from CPU to a even larger area, before it is cooled by fins.
    If a surface is not hot by the heatload it can not help dissipate the heatload from the CPU.

    I am sure you are correct about the thermal resistance through a material, but the practical thermal transfer/spreading has higher priority or higher importance in this case.
     
  9. blkspade

    blkspade Master Guru

    Messages:
    636
    Likes Received:
    29
    GPU:
    Leadtek Nvidia Geforce 6800 GT 256MB
    Yeah. Unless you plan on making babies with it, why worry about what it looks like.
     
  10. Octopuss

    Octopuss Master Guru

    Messages:
    867
    Likes Received:
    73
    GPU:
    -
    This thing looks BADASS!
     
    Dimitrios1983 likes this.

  11. GamerNerves

    GamerNerves Master Guru

    Messages:
    313
    Likes Received:
    74
    GPU:
    RX 5700 XT Nitro+
    Only thing I can think about this is that it will be more annoying to clean thermal paste from the clefts. I never really cared how the CPU looks. Perhaps thermal performance wise it is an improvement, which is most important.
     
  12. Airbud

    Airbud Ancient Guru

    Messages:
    1,764
    Likes Received:
    2,802
    GPU:
    RTX 4090-48GB-900W
    I like it!...looks fast just sitting still...

    [​IMG]
     
    sykozis and Dimitrios1983 like this.
  13. XenthorX

    XenthorX Ancient Guru

    Messages:
    4,436
    Likes Received:
    2,554
    GPU:
    4090 Suprim X
    I am still not a fan of the mounting solution for coolers, i don't like those two brackets.
     
    Dimitrios1983 likes this.
  14. kakiharaFRS

    kakiharaFRS Master Guru

    Messages:
    926
    Likes Received:
    339
    GPU:
    KFA2 RTX 3090
    Terminator Neural-Net Processor by Cyberdyne Systems
    coming soon in your computer..wouldn't be surprised that's what's inside the 4090 I mean it's going to be nuclear hot and all :p
     
    Dimitrios1983 likes this.
  15. Dimitrios1983

    Dimitrios1983 Master Guru

    Messages:
    333
    Likes Received:
    104
    GPU:
    RX580
    I'm guessing that means NVIDIA CEO is the Terminator since they wear the same leather jackets? ;-) Where does Lisa Su fit in character wise?
     

Share This Page