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Old 12-14-04, 03:52 AM   #337
Chippy
 
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by NemesisChild
More power=less stress=less heat.
Nemesis, I fully support your ideas about the benefits of a more powerful PSU to give you a stable, trouble-free system. That's why I run an OCZ Powerstream 520W PSU myself.

But the idea that somehow a more powerful PSU generates less heat in the components it drives is pure fantasy. The physics of how heat is generated is pretty straightforward and is all to do with voltage, current and impedance. "Stress" doesn't figure in the equations. LOL. Yes, I *suppose* you could find some esoteric argument that demonstrated some wierd circumstances where on-board voltage regulation circuitry somehow consumed more power if it was undervolted. But I am unaware of any such theories, and if it were to be true - which I doubt - then the effects would surely be minor.

Bottom line is, powerful PSUs are more likely to be operating well within their maximum specification and are therefore more likely to be delivering smooth, stable current. Which is more likely to allow your components to work without crashing due to voltage drops and fluctuations.

Chip
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Old 12-14-04, 12:06 PM   #338
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Default Re: GeForce 6800 power supply questions

Hello

i want to buy ocz psu , but icant get it in israel.
i can get TAGAN 480 or Enermax 495 Noisetaker , how it compare to
ocz psu, and shloud i wait for ocz? (date of supply unknown)
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Old 12-14-04, 12:34 PM   #339
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by snoopdogg
Hello

i want to buy ocz psu , but icant get it in israel.
i can get TAGAN 480 or Enermax 495 Noisetaker , how it compare to
ocz psu, and shloud i wait for ocz? (date of supply unknown)
The OCZ is a much better PSU than either of the two you mention.

But on the other hand, the others are still good PSU's. My advice would be if you *need* a new PSU, go ahead and buy one of the others (the Tagan would be my preference). And if you don't *need* a new PSU right now, then wait.

Chip
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Old 12-14-04, 08:00 PM   #340
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by Chippy
Nemesis, I fully support your ideas about the benefits of a more powerful PSU to give you a stable, trouble-free system. That's why I run an OCZ Powerstream 520W PSU myself.

But the idea that somehow a more powerful PSU generates less heat in the components it drives is pure fantasy. The physics of how heat is generated is pretty straightforward and is all to do with voltage, current and impedance. "Stress" doesn't figure in the equations. LOL. Yes, I *suppose* you could find some esoteric argument that demonstrated some wierd circumstances where on-board voltage regulation circuitry somehow consumed more power if it was undervolted. But I am unaware of any such theories, and if it were to be true - which I doubt - then the effects would surely be minor.

Bottom line is, powerful PSUs are more likely to be operating well within their maximum specification and are therefore more likely to be delivering smooth, stable current. Which is more likely to allow your components to work without crashing due to voltage drops and fluctuations.

Chip

Not to blow a hole in your synopsis, but imagine this (R. Kelly - 2004), you have a regulated circuit that requires 2 amps. As the drain on this circuit increases (imagine shorting out the circuit = instant maximum drain = awesome heat), components down the line either provide (if drain = designed), or a fuse blows (usual result) if drain is not by design. If the circuit and pwr supply was designed for such drain, imagine how much cooler things could run if they were better designed? Better design being, increase supply capacity, or decrease supply demand.

If you design/operate a circuit to always work at the outside edge of acceptable parameters, you can expect shortened lifespan of that circuit, or some other component in the path.

So yes, IMHO, a more capable PSU can reduce the likelyhood that you are supplying insufficient voltage to support your components. Of course other things come into play, but I think you get my drift.
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Old 12-15-04, 12:43 AM   #341
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Default Re: GeForce 6800 power supply questions

why do u think OCZ is "mutch" better then TAGAN?
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Old 12-15-04, 04:17 AM   #342
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by Slammin
So yes, IMHO, a more capable PSU can reduce the likelyhood that you are supplying insufficient voltage to support your components. Of course other things come into play, but I think you get my drift.
That bit I agree with. In fact I said so myself in the last paragraph you just quoted.

Quote:
Imagine this: you have a regulated circuit that requires 2 amps. As the drain on this circuit increases (imagine shorting out the circuit = instant maximum drain = awesome heat), components down the line either provide (if drain = designed), or a fuse blows (usual result) if drain is not by design. If the circuit and pwr supply was designed for such drain, imagine how much cooler things could run if they were better designed? Better design being, increase supply capacity, or decrease supply demand.
Now you are confusing me. Are you talking about heat in the PSU? Or heat in the components on your motherboard or graphics card?

Nemesis was talking about the latter. And my point was I don't see how a bad PSU would make external components heat up more. I can see how a more efficient PSU would heat up less *internally*, but thats not what Nemesis was saying, nor what I had issue with.

Quote:
If you design/operate a circuit to always work at the outside edge of acceptable parameters, you can expect shortened lifespan of that circuit, or some other component in the path.
I agree with that too!

Quote:
Originally Posted by Snoopdogg
why do u think OCZ is "mutch" better then TAGAN?
No PSU I have ever seen has voltage rails as stable as that of the OCZ. I have tested many - although to be fair, I have not tested the Tagan. All the others produced noticeable voltage "wobbles" and usually voltage drops too, when you load the PSU. This will certain place a strain on the motherboard's own voltage regulation ciruitry and possible cause a CPU crash if you are near an overclock limit. Of course if you are not overclocking, the motherboard's own circuitry is supposed to be able to deal with this and its less of a problem.

But the OCZ's stability is just *incredible*. Its like a rock. 150w load, 350w load - it make no difference. It just flips from one to the other and the voltage lines don't budge. Maybe the Tagan is the same. But I doubt it. No other PSU is the same.

Chip
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Old 12-15-04, 04:35 AM   #343
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Default Re: GeForce 6800 power supply questions

thank u

its true that the ocz psu is actauly made from tagan?
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Old 12-15-04, 04:52 AM   #344
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by snoopdogg
thank u

its true that the ocz psu is actauly made from tagan?
I don't know. I haven't managed to find out who actually makes it. But its a brilliant design. Whoever designed it deserves a medal.

Chip
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Old 12-16-04, 04:45 AM   #345
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Default Re: GeForce 6800 power supply questions

They may be a lot of power supplies better than OCZ but IMO i have'nt found one that is as stable and has all the extra feature that OCZ does.
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Old 12-16-04, 05:11 AM   #346
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Exclamation Re: GeForce 6800 power supply questions

Quote:
Originally Posted by john19055
They may be a lot of power supplies better than OCZ but IMO i have'nt found one that is as stable and has all the extra feature that OCZ does.
I would not say "better" - i would say "which have a higher watt declaration"

But there`s already a new OCZ 600W out now ... whoever needs it
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Old 12-16-04, 01:28 PM   #347
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Default Re: GeForce 6800 power supply questions

Well I got my 6800 Ultra switched to a BFG white box (from a PNY) then I put the OCZ 520 in and I have had no problems :-)

I still don't like the green lighting up my room at night :-(

That has to be the only bad thing about this wonderful power supply

The only voltage that is going up and down is the +5v 4.999 to 5.026
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Old 12-16-04, 02:00 PM   #348
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Default Re: GeForce 6800 power supply questions

Quote:
Originally Posted by TomSwift
Well I got my 6800 Ultra switched to a BFG white box (from a PNY) then I put the OCZ 520 in and I have had no problems :-)

I still don't like the green lighting up my room at night :-(

That has to be the only bad thing about this wonderful power supply

The only voltage that is going up and down is the +5v 4.999 to 5.026
LOL! -0.02%, + 0.5%, and that's the *worst* rail??!??!

These PSU's are just unbelievable. OCZ must have done some pact with the devil to get them this good.

Chip
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