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Put that old CPU to use

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  • Put that old CPU to use

    Just wanted to share my new discovery... A USB Pentium I co-processor!


    (click for bigger)


    As you can see, it's probably the ultimate gamer PC mod. Observe how the life of an ordinary mug of tea is prolonged almost indefinitely, thanks to the awesome abundance of raw processing power provided via an ordinary USB2 port.



    Enjoy!

  • #2
    Ha! That's brilliant!
    Gaming PC:
    2500K@4.3GHz (Cooled by Corsair H60) | ASRock Extreme3 Gen3 | 8GB XMS3 | Gainward GTX570 GLH Edition
    Antec TruePower New 750 Watt PSU | 1TB WD Black SATA III | Corsair Force 3 60GB SSD Boot | Xigmatek Utgard (Windowed) | 23" AOC 1080p LED Monitor | Sharkoon FireGlider Mouse | Sidewinder X4 Keyboard

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    • #3
      does it work? if so i want to make one now

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      • #4
        Err, well it's a reasonable cup warmer and thanks to the revolutionary design it will work with practically any OS without any special drivers. Here's a look at what's inside. Note the neat two-wire USB interface (that's 'Power' and 'Ground' ), and the purely thermal interface to the underside of the CPU. Clever, eh?

        (In case you're still interested in rolling your own, the resistors are a pair of farily meaty 4.7 ohms wired in series and placed across the +5V from the USB port. A bit of thermal paste helps spread the heat into the Pentium.)

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        • #5
          ahh right, i thought he'd rigged up power to the power pins on the pentium, which i would have thought might heat it up.

          Im not so sure on effectivly "shorting" my 5v out from my mobo

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          • #6
            Originally posted by welshtom View Post
            ahh right, i thought he'd rigged up power to the power pins on the pentium, which i would have thought might heat it up.
            Thats what I thought aswell, now heres a thought run a 12v transformer from the wall to a pentium 4 that should keep things very toasty
            Uber Rig DFI P35 (the green one), OCZ 2GB PC2-8500 @ 1080mhz it 5-5-5-15 , X3210 @ 3.6ghz 450x8, Corsair 750w PSU, Palit 8800gts (640mb) @ 630/2000 , 6 160gb hdds and seriously watercooled in a lian li V2000

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            • #7
              Originally posted by Calamitydrains View Post

              (In case you're still interested in rolling your own, the resistors are a pair of farily meaty 4.7 ohms wired in series and placed across the +5V from the USB port. A bit of thermal paste helps spread the heat into the Pentium.)
              they are not meaty resistors at all... 1w max from the picture...

              if you want a man size resistor for the job then rs stock 25w ones at the same value. you then just need to use thermal adhesive to connect the heatsinks of the resistors to the bottom of the chip.
              Alcohol free beer is like licking your sister... tastes the same but you know deep down it's just wrong!

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              • #8
                I(amps)=E(volts)/R(resistance)
                I=5/9.4
                I=0.531 amps

                P(in watts) = I x E
                P=.531 x 5
                P=2.655 watts

                Putting in resistors capable of handling more watts will do nothing to change the amount of heat given off.

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                • #9
                  Originally posted by Tami View Post
                  I(amps)=E(volts)/R(resistance)
                  I=5/9.4
                  I=0.531 amps

                  P(in watts) = I x E
                  P=.531 x 5
                  P=2.655 watts

                  Putting in resistors capable of handling more watts will do nothing to change the amount of heat given off.

                  tis true, but if you increase the voltage, ie take it off the 12v line from the psu rather than the usb side... you end up with 15 and a bit watts of heat... and a drain of 1.3A on the psu.
                  Alcohol free beer is like licking your sister... tastes the same but you know deep down it's just wrong!

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