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    Will T9550 with AS5 = P9600??

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by L4d_Gr00pie, Mar 13, 2009.

  1. L4d_Gr00pie

    L4d_Gr00pie Notebook Evangelist

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    I didn't want to get the T9550 because it runs hotter than P9600 and could be hot if the laptop is on my lap, but I just realized it'll have some artic silver 5 on it.. So will this make it less hot and basically get rid of the disadvantage of having a 35W processor? (I don't mind about the 10min battery loss over the T9550)
     
  2. ramgen

    ramgen -- Morgan Stanley --

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    AS5 will certainly help but it is not enough alone. I think T9550 with undervolting = P9600...


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  3. laserbullet

    laserbullet Notebook Evangelist

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    Or get a P9600 with AS5, and lap the CPU for good measure >_>
     
  4. Silvr6

    Silvr6 Notebook Evangelist

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    The cpu is still going to put out the same amount of heat its TDP (Thermal Design Power) will not change unless you undervolt it. Heat in a laptop and battery life is directly related to the core voltage.

    Having said that, adding AS5 will allow better thermal heat transfer and lower temperatures.

    Now if you had a P9600 with AS5 it would be even cooler.
     
  5. L4d_Gr00pie

    L4d_Gr00pie Notebook Evangelist

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    Hmm I guess a P9600 with AS5 would be the best choice then
     
  6. Silvr6

    Silvr6 Notebook Evangelist

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    One more thing to keep in mind is that both cpu's are going to idle at the same speed and voltage, so the difference you will see in heat (or on the battery) is when the cpu is not idle. If you frequently use cpu intensive programs then overall the P9600 will be cooler.
     
  7. K-TRON

    K-TRON Hi, I'm Jimmy Diesel ^_^

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    The actual difference in running temperature between the 25 watt and 35watt TDP processors is not very large. Actually they will run the same in most circumstances. The temperature of the system is based on the BIOS and readings of the sensors. So when the cpu hits 140F the fan comes on low.
    Whether you have a 25 watt or a 35watt tdp processor the temperature the fan comes on is the same.
    The only difference is the time which it takes for the cpu to heat up.

    I for one am very skeptical of the 25 watt and 35 watt tdp differences
    I say this because I mean it. When AMD came out with the 4200+ for socket AM2, they were originally 90watt cpu's, but a few months later they were released as 65 watt models
    The interesting thing is they both ran the same temperature, and both drew 58watts at full load.
    So I have a big feeling that the numbering scheme of the TDP is marketing based. Obviously people will buy the lower TDP because they think it will run cooler, when in reality they are really the same power efficiency wise.
    A 25 watt processor marked in the 35TDP range is legal to do, and I think Intel is doing it.
    So in reality the temperature difference may be none whatsoever. It just depends on how honest Intel is.
    Plus it does not matter much anyways because if you are worried about the temperature, the Bios controls everything

    There is only one way to prove my idea.
    Someone needs to upgrade from an identically clocked T series processor to a P series processor and note the battery life.
    That is the only way to know. And to be honest with you the P series stating as 10 watts lower, should equate to 30-45 minutes more battery life

    K-TRON
     
  8. L4d_Gr00pie

    L4d_Gr00pie Notebook Evangelist

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    But I've heard poeple saying that it burns they lap or its hot under the laptop with a T serie compared to a P? Could anyone confirm this?

    And are you saying that theorically 10 watts lower should give 30-45min more battery life or that in reality it gives 30-45min? I though it was only about 10min no?
     
  9. K-TRON

    K-TRON Hi, I'm Jimmy Diesel ^_^

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    The cpu represents most of the power consumption of the laptop. Most harddrives use around 4 watts or less, the screen takes around 10 watts, and the processor takes 25-150 watts in some laptops.

    If you have a system which has a 35 watt cpu, and you cut the power envelope by 10 watts, to 25 watts than the battery life will be about 30 minutes more when both processors are running 100% load on battery.

    When both processors are at idle power consumption will be very similar

    K-TRON
     
  10. t30power

    t30power Notebook Deity

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    I think having a cooler laptop has more to do with the running voltage at which the processor runs for a certain multiplier. P-M's were able to undervolt up to 0.700V compare it against a C2D which the lowest you can go is 0.950-0.940V.
    I wonder if a 32nm would be a real breakthrough in having almost fanless computers.

    [quote="L4d_Gr00pie"But I've heard poeple saying that it burns they lap or its hot under the laptop with a T serie compared to a P? Could anyone confirm this?

    And are you saying that theorically 10 watts lower should give 30-45min more battery life or that in reality it gives 30-45min? I though it was only about 10min no?[/quote]

    I believe in Core duos this doesn't happen, I've used personally laptops with AMD processors and those heat up like industrial ovens. My T8100 barely reaches 55C at full load @ (0.950V)