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    GPU and CPU heat dissipation

    Discussion in 'Gaming (Software and Graphics Cards)' started by hendra, Feb 13, 2010.

  1. hendra

    hendra Notebook Virtuoso

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    Why does GPU dissipate a lot more heat than CPU? You can find the fastest laptop CPU in the market or close to it with a thin and light notebook. But you would need to have a thick and overly bulky and heavy laptop to accommodate a class 1 GPU. When will we have the technology to have a 6-pound notebook or lighter with a class 1 GPU?
     
  2. CooLMinE

    CooLMinE Notebook Deity

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    Do you see many "light" cars with huge engines ? (racing cars excluded) :p

    If someday they resolve the heating caused then it will be possible since the laptops are usually bigger to give the hardware some room to breath.
     
  3. sgogeta4

    sgogeta4 Notebook Nobel Laureate

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    GPUs are quite a bit more powerful than CPUs in terms of processing power; however, this processing power is limited in its applications, whereas a CPU is currently more universal in terms of adaptability.
     
  4. bagienny

    bagienny Notebook Consultant

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    I very much doubt that you'll find a high-end CPU within a thin and light case :D The most powerful mobile CPU to date is a quad-core i7 (45-55W), and that's not what you'll find in t&l cases - there're most often a CULV Core 2 Duo which requires only about 8-10W at most.
     
  5. Althernai

    Althernai Notebook Virtuoso

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    For the same reason that practically nobody ever worries about drivers for a CPU whereas for a GPU they're crucial: CPUs are an important part of the modern world whereas discreet GPUs are glorified toys. People with a great deal of money (the military, financial institutions, etc.) use CPUs in bulk and they would rather not spend millions of dollars on electricity and cooling. As a result, CPUs are always designed with an eye towards performance per watt as well as per dollar and CPU manufacturers always strive to lower the power usage with each iteration of a particular architecture. Therefore, when the time comes to cut the TDP down in order to put it into a mobile platform, the alterations that need to be made are not drastic -- mobile CPUs are usually within a factor of 2 or so of their desktop counterparts in performance.

    On the other hand, until very recently, GPUs have been used for gaming and very little else. Gamers don't seem to mind the fact that their GPUs often use more power than the rest of the machine put together so the GPU companies are limited by the wattage of power supply units rather than anything else and when you somehow need to stuff these monstrosities into a laptop... well, the performance hit can be on the order of a factor of 5 or even 10. The factor can go even higher in which case they simply don't bother -- note that Nvidia's cards have been rebrands and die shrinks of the same architecture for a long time.

    When GPUs either merge with CPUs or are used for serious computing. Both of these are in their developmental stages now; it's only a matter of which one happens first.
     
  6. thinkpad knows best

    thinkpad knows best Notebook Deity

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    I didn't know you could run something on your computer with a processer not functioning... :p can you just buy a Mini PCI-E Core Solo or something for temporary? lol. GPU's are more just high performance processors that have their own subsystem wtihin a subsystem. Discrete GPU's only take up about 15% of the computer graphics solutions market.
     
  7. Althernai

    Althernai Notebook Virtuoso

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    You cannot -- if the processor is not properly seated in its slot, the motherboard simply won't POST (same goes for the RAM). Interestingly enough, you can run without any graphics at all (integrated or discreet). I don't know if you can do it with Windows, but I do know some labs that use a flavor of Linux for their "headless" nodes (meaning, computers that are not connected to a monitor and are only used remotely).
     
  8. thinkpad knows best

    thinkpad knows best Notebook Deity

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    Ah yeah i'm not stupid, i was just kidding with what i said.