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Some Laing D5 test results, 13.1-24V is the same

post #1 of 36
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Edited by Martinm210 - 12/8/12 at 6:44pm
    
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post #2 of 36
It kinda makes sense...more volts..less amps. Amperage is what causes heat..not voltage. So I can run my D5 off the mod'd 24v PSU i use for my fans...and have 13v performance with less heat dump in the loop?
post #3 of 36
I always feel dumb when reading your tests... but keep them coming anyways... maybe one day I'll be able to understand everything you do!
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post #4 of 36
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post
It kinda makes sense...more volts..less amps. Amperage is what causes heat..not voltage. So I can run my D5 off the mod'd 24v PSU i use for my fans...and have 13v performance with less heat dump in the loop?
Yeah, my thoughts exactly. I don't know much about electronics other than some basics, but heat should be created by amperage.

The pump appears to have the least amperage at 24V, so I can only think that would be best.

I plan to hook my variable PSU to my running D5s and see what effect it has. The performance advantage is minimal, but I've always heard how important heat dump is, and so I would have to think it will have some improvement..
    
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post #5 of 36
Quote:
Originally Posted by CL3P20 View Post
It kinda makes sense...more volts..less amps. Amperage is what causes heat..not voltage. So I can run my D5 off the mod'd 24v PSU i use for my fans...and have 13v performance with less heat dump in the loop?
no, wattage is what brings the heat. P=U*I -> Wattage (Power) = Voltage * Amperage
post #6 of 36
yeah..i just mod'd the x1950 ...I can stand to loose some heat outta' the loop. My idle temp for CPU went up by 4c just raising the GPU speed 180mhz ..and .2v increase in gpuv.
post #7 of 36
Martin as i can see from the graph there is certainly a (variable diff haha) between the voltage. i'm concerned about the MTBF of 50k hours running at full load of 24v. i want to tweak my pump when i run my 2 rads i'll have a cpu,gpu to cool seeing the tweaked d5 can def be a good purchase after all. keep us posted
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post #8 of 36
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Quote:
Originally Posted by beelzebub_75 View Post
I always feel dumb when reading your tests... but keep them coming anyways... maybe one day I'll be able to understand everything you do!
I don't understand everything either. Just producing numbers and hoping someone else can tell me what it means..

I'm learning slowly I guess. A year ago I was looking at a kit and asking all sorts of newb questions, it's guys like Ira that got me going..

Then since I do some hydraulics type stuf at work, I couldn't resist...now I'm very dangerous..
    
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post #9 of 36
Thread Starter 
Quote:
Originally Posted by ChielScape View Post
no, wattage is what brings the heat. P=U*I -> Wattage (Power) = Voltage * Amperage
See...I don't know what I'm doing. I knew someone with some electrical background would correct me..
    
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post #10 of 36
Quote:
no, wattage is what brings the heat. P=U*I -> Wattage (Power) = Voltage * Amperage
Wattage is an indirect measurement.

Thats like saying- "no, the sun doesnt cause heat...light does."
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