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  1. Thread: My computer

    by star882
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    611

    Does your kernel support SMP? You might be using...

    Does your kernel support SMP? You might be using only one of your two CPUs if it doesn't. Also type "free" into the terminal (on both PCs) and tell me what it reports. If it's using lots of swap, it...
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    Also try drinking cold water. It takes *about*...

    Also try drinking cold water. It takes *about* one calorie to raise one gram of water one degree C.
    If you want, you could even make a water cooler that uses an open drive compressor driven from an...
  3. Let's start a boycott... Let's use wireless cards...

    Let's start a boycott... Let's use wireless cards with high gain antennas attached to them...
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    http://www.xtremesystems.org/forums/member.php?u=3...

    http://www.xtremesystems.org/forums/member.php?u=3031
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    Hasn't satellite internet existed for a long...

    Hasn't satellite internet existed for a long time? You can get satellite internet as long as there's a view of the sky. There's even an electronic dish that will automatically realign in a moving...
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    I just came across that information while...

    I just came across that information while researching how to build a phase change CPU cooler.
    BTW, putting refrigerant into a metal block attached to the CPU is called DD (Direct Die). When a liquid...
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    I actually work on Britney "mini supercomputers"....

    I actually work on Britney "mini supercomputers". If you haven't experienced it, 15GigaFLOPS is very fast. (To give you an idea, that's about 2 to 4 times the speed of an Athlon 64 at the same clock...
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    I don't know the exact figures but a 3.6GHz...

    I don't know the exact figures but a 3.6GHz Britney is more than powerful enough to emulate an earthworm brain. (Earthworms have very simple brains, as do spiders. I recall a figure that a spider...
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    Used properly, 15GigaFLOPS (up to 3TeraFLOPS if...

    Used properly, 15GigaFLOPS (up to 3TeraFLOPS if internal FPGA can optimally coprocess the data) is some pretty serious power for audio DSP. In fact, 15GFLOPS is actually very fast for video DSP......
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    You could have a pro rewire the controls so the...

    You could have a pro rewire the controls so the heat strips will not turn on unless the thermostat is turned to emergency heat or if the room temperature is very low.
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    Trinitrons that can do 1080p have been around for...

    Trinitrons that can do 1080p have been around for a long time. I have a 5 year old HP p1130 that could do 1440p (that's right - 1920x1440 progressive at 80Hz) without a problem. I still prefer a pair...
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    What are the operating pressures when fully...

    What are the operating pressures when fully warmed up? The LG unit I talked about has design high side pressure in excess of 500PSI. (I think it listed 630PSI but I'm not sure.) I'm pretty sure it...
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    Do you have a good torch? Beware that if you have...

    Do you have a good torch? Beware that if you have a high end brazing torch, it will probably be too hot for easy soldering, so try moving it to distribute the heat. Don't worry all that much if you...
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    Can you replace the amplifiers with digital ones...

    Can you replace the amplifiers with digital ones to reduce the load? Keep in mind that a digital amplifier is about 2 or 3 times as efficient as an analog amplifier.
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    No. You can make an account on that forum (or...

    No. You can make an account on that forum (or http://www.xtremesystems.org/forums/forumdisplay.php?f=80 ) and PM him for proof.
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    Well, it doesn't take much to get 28" of vacuum....

    Well, it doesn't take much to get 28" of vacuum. (I'm sure the diaphragm vacuum pump used for automobile controls can do it.) Even an air compressor working in reverse can do it. But a humble...
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    Actually, you can buy a ball valve that has about...

    Actually, you can buy a ball valve that has about 6" of hose already attached. (Check your local supply shop. I know ACR sells those.) Attach that hose to the vacuum pump. And you can get a T fitting...
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    Pretty simple. The outer two gauge hoses connect...

    Pretty simple. The outer two gauge hoses connect to the system as usual. The middle hose, however, connects to an end of a T fitting. The other end of the T fitting attaches to the ball valve than to...
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    There will still be a small amount of air left in...

    There will still be a small amount of air left in the section where the nipple connects to the valves. In refrigeration, even a tiny amount is significant.
    Besides, with the T fitting and ball valve...
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    I usually pull a vacuum for about 4 hours three...

    I usually pull a vacuum for about 4 hours three times, so a total of 12 hours. The following link explains triple evacuation:...
  21. To be precise, they also use PAG and PAO for...

    To be precise, they also use PAG and PAO for R134a, but Ester oil (POE) is the most common for low temperature applications. PAG absorbs moisture extremely well (and breaks down with exposure to...
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    Do they triple evacuate? How long do they pull a...

    Do they triple evacuate? How long do they pull a vacuum? What compressor do they use?
    Keep in mind that a compressor often works better than a typical aspirator (air powered) vacuum pump. Therefore,...
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    Just a wild guess but maybe the mercury is used...

    Just a wild guess but maybe the mercury is used to protect the plumbing? I'm thinking the mercury might coat the pipes and form a protective layer and/or work as part of an electrochemical cell to...
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    And I guess there's a condensing unit underneath...

    And I guess there's a condensing unit underneath just so you can say it's a heat pump.

    LG already makes one that uses a heat pump, and it does take a while to start up on a cold day. On average,...
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    An inverter certainly is a great idea, but it's...

    An inverter certainly is a great idea, but it's not the only solution. You'll need some very careful design to make it vary as extreme as 1 to 4 tons. IIRC, an inverter can reduce capacity down to...
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