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Thread: X800 XT PE and tec

  1. #1
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    X800 XT PE and tec

    Hi to all
    I would like to ask tec experts if a 142watt tec with water on it can handle the card at 1.75vgpu
    Thanks in advance

  2. #2
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    Well my 172W TEC handles my PE at 1.75V and it's only working at about 100W until I get a 24V PSU.

    Jokester

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    Ok thank's mate.
    Do you know at load temps?

  4. #4
    THE ORIGINAL OC JEDI
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    even the 80w will deliver the goods.... and prob give you 700ish....OC

    C

  5. #5
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    Load temps for me is about 18C at 660MHz

    Jokester

  6. #6
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    Ok Thanks a lot for your answers

  7. #7
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    I won an X800 XT PE on eBay and it had a GPU voltage mod done, how much voltage is safe with a MCW50-T with the 80W pelt replaced with a 172W one running off of an OCZ PowerStream 520W. I'm going to get 3/8" stem to 1/2" ID converters and have the MCW50-T on its own loop with a DangerDen D4 pump, Heater Core radiator with 2 1" shrouds and 2 120MM fans. About 1.75V is safe right?

  8. #8
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    I Use 1.75v for 24/7 on plain water.

    I think the problem ain't if the core/sorrunding temp is high, cause those are easy to keep down. Its the enourmus heat on other places of the pcb when running high v.
    (around the power connector/vgpu resistor area).

    So if u plan to run higher than 1.7v, place a fan directed "over" the gfx and keep decent air-flow.

    But im no expert. Thats just my personal experience.

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    Today i placed a 80watt under my block(homemade) and now i have -5 idle +14 load
    Now i can run the card at 473(461 when i had only water)
    here is some test i did

    Thanks all for your answers.

    and links
    http://service.futuremark.com/compare?2k1=8383115
    http://arc.aquamark3.com/arc/arc_vie...run=1963210078

  10. #10
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    nice results.

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  12. #12
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    You should consider going to a 172W/24V TEC - even when run on 12V, these TECs are superior to 80W/16V units. They don't cost much, and make a signifigant difference.

    Grab a cheap 24V variable PSU (I got mine for $9 on eBay) off of eBay, and you'll have load temperatures a good ~10 degrees celcius lower than you currently have. That 10 degrees celcius will also signifigantly raise your card's overclocking potential.

    $30 for 10 degrees celcius lower ain't bad at all

  13. #13
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    Quote Originally Posted by felinusz
    You should consider going to a 172W/24V TEC - even when run on 12V, these TECs are superior to 80W/16V units. They don't cost much, and make a signifigant difference.

    Grab a cheap 24V variable PSU (I got mine for $9 on eBay) off of eBay, and you'll have load temperatures a good ~10 degrees celcius lower than you currently have. That 10 degrees celcius will also signifigantly raise your card's overclocking potential.

    $30 for 10 degrees celcius lower ain't bad at all
    there is something, they call "electric-bill"

    ----- AMD K6-2 300 "Chomper" xxxxx xxxx xxxx /// 300 MHz @ 2,200 V -----
    ----- AMD Athlon XP 1700+ "Thouroghbred B" JIUHB 0306 MPMW /// 2400 MHz @ 1,900 V -----
    ----- AMD Athlon XP-M 2500+ "Barton" AQXEA 0327 UPMW /// 2450 MHz @ 1,850 V -----
    ----- AMD Athlon XP-M 2600+ "Barton" IQYHA 0401 XPMW /// 2500 MHz @ 1,750 V -----
    ----- AMD Athlon 64 3000+ "Newcastle CG" xxxxx 0418 WPMW /// 2600 MHz @ 1,600 V -----
    ----- AMD Athlon 64 3200+ "Winchester D0" xxxxx 0433 SPMW /// 2750 MHz @ 1,616 V -----

    ----- AMD Phenom II X2 555 BE "Callisto" xxxxx xxxx xxxx /// 4080MHz @ 1,375 V -----
    ----- AMD Ryzen "Zen" xxxxx xxxx xxxx /// TBA @ TBA -----

  14. #14
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    there is something, they call "electric-bill"
    O.K. - fair enough


    Cost of electricity here where I live (Toronto, Canada) - 4.3 cents per Kilowatt hour.

    Amount of electricity that a 172W/24V peltier on 24V uses (mind you, I ran my 172W/24V peltier on 22V, this proved to be the 'sweet spot', where efficiency isn't countered at all by increased heat output) - 0.172 Kilowatts.

    So, lets say we run our machine 24 hours a day, 7 days a week. 24 X 7 = 168 hours a week.

    (168 X 0.172) X 4.3 = 124.25 (cost of running a 172W peltier for one week, in cents)

    Therefor, It costs you ~$1.25 Canadian Currency (less when you undervolt the peltier slightly) to run a 172W peltier for a week straight (in Toronto - the cost of electricity is different everywhere). That isn't very much money.


    I am unsympathetic about your power bill concerns .

    However, I'm still in High School, and my parents pay the electricity bills around here, so I get off scott-free regardless .
    Last edited by felinusz; 01-22-2005 at 12:29 PM.

  15. #15
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    I' m going to buy this week a 142w tec at 12v...
    I will post the results.Hope to be good

  16. #16
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    I hope that you have a dedicated 12V PSU for that peltier, or a very, very good computer PSU; that peltier will draw ~12 Amps (maximum) off of your PSU's 12VDC rail.

  17. #17
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    Quote Originally Posted by felinusz
    I hope that you have a dedicated 12V PSU for that peltier, or a very, very good computer PSU; that peltier will draw ~12 Amps (maximum) off of your PSU's 12VDC rail.
    Hi
    I have 2 psu's
    For motherboard,video card and hard disks enermax 465 modded at all rails
    For cd drives prometeia fun's and tec Antec 550 true control..So antec i believe won't have any problem

  18. #18
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    Hi
    I have 2 psu's
    For motherboard,video card and hard disks enermax 465 modded at all rails
    For cd drives prometeia fun's and tec Antec 550 true control..So antec i believe won't have any problem

    Hehehehehehehhee

    You my friend, are all set

  19. #19
    THE ORIGINAL OC JEDI
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    For benching, not many things beat:
    MCW50-t w/ 172w/24v pelt
    5 gallon bucket
    2 bags of ice
    Pump

    Bench with icewater and you get single-phase like temps....
    easy and the insulation on the Swiftech works great!

    C

  20. #20
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    For benching, not many things beat:
    MCW50-t w/ 172w/24v pelt
    5 gallon bucket
    2 bags of ice
    Pump

    Bench with icewater and you get single-phase like temps....
    easy and the insulation on the Swiftech works great!

    C
    Just keep adding Ice, and removing water.... wow, that would work really well, yet it's so simple and inexpensive!

    And you don't even need a radiator, or even a fan! Charlie, you're a genius

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