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Phaedrus Quick'n'Dirty PSU calculator

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post #11 of 337 (permalink) Old 06-18-2011, 10:57 AM
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Originally Posted by Phaedrus2129;13918669 
Normal usage. For folding I'd multiply final result by 1.5. I'll add that to the guide.

Why do folders need a 1.5 multiplication? For efficiency?

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post #12 of 337 (permalink) Old 06-18-2011, 11:01 AM - Thread Starter
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Quote:
Originally Posted by B!0HaZard;13918750 
Why do folders need a 1.5 multiplication? For efficiency?

Most systems are idle the vast majority of the time. The PSU may be at 10% load sometimes, 70% load other times, other times 50% or 25% or 40% or 90%. it's never in a continuous load state for very long. An hour or two at 80% load followed by hours at <50% load is not especially hard on the PSU.

Whereas a 24/7 dedicated folding system will have a constant, continuous load. 24/7 at 80% load will wear heavily on the PSU and may cause an early failure. In comparison, 24/7 at 50% load is far safer. And sometimes more efficient.

Burning books is like burning bras; after the adrenaline rush of the symbolic moment wears off all you're left with is a pile of ashes and unsupported boobs.
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post #13 of 337 (permalink) Old 06-18-2011, 11:05 AM
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You should make a GUI interface in Visual Basic and see if you can track the IP put this all into a nice program.
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post #14 of 337 (permalink) Old 06-18-2011, 11:08 AM
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Quote:
Originally Posted by xxbassplayerxx;13918817 
You should make a GUI interface in Visual Basic and see if you can track the IP put this all into a nice program.
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Oh I see what you did there even without watching that Youtube clip.
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post #15 of 337 (permalink) Old 06-18-2011, 11:10 AM
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What's meant exactly by moderate overclocking of GPUs? I have my 480 voltage overclocked to 1213mV over the stock 1100mV, does this count as moderate or high?
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post #16 of 337 (permalink) Old 06-18-2011, 11:11 AM - Thread Starter
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Quote:
Originally Posted by catcherintherye;13918858 
What's meant exactly by moderate overclocking of GPUs? I have my 480 voltage overclocked to 1213mV over the stock 1100mV, does this count as moderate or high?

I'd call moderate the max you can go without increasing voltage.

Power usage of a chip increases linearly with clock speed, exponentially with voltage.

Burning books is like burning bras; after the adrenaline rush of the symbolic moment wears off all you're left with is a pile of ashes and unsupported boobs.
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post #17 of 337 (permalink) Old 06-18-2011, 11:20 AM
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What are your thoughts on the 12V rail's amperage rating when choosing a PSU? My GTX 285OC's box specifies it needs a 575W PSU with 42A on the 12V Rail. My BFG 550W seems to power it fine in everyday usage and gaming, but if I dare try Furmark, I get a BSOD. No BSOD when I use a HX620.

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post #18 of 337 (permalink) Old 06-18-2011, 11:22 AM
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This is pure win!!! Great thread Phaedrus! It should be a sticky!

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post #19 of 337 (permalink) Old 06-18-2011, 11:26 AM
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In the OP you mentioned needing 850W for a single HD6990/HD5970? Or did you mean x2 HD6990/HD5970?

Just wondering, I was a bit confused, I had an HD5970 which was being used with a Corsait TX650 and it was completely fine (And current x2 HD6970's on a 750W completely fine too. tongue.gif).

Thanks for the thread, bookmarked, it will definitely help me in future upgrades.

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GPU's: HD5850 > HD5970 > 2x HD6970 > 2x GTX580 > 3x GTX580 >
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post #20 of 337 (permalink) Old 06-18-2011, 11:29 AM - Thread Starter
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Quote:
Originally Posted by kcuestag;13919003 
In the OP you mentioned needing 850W for a single HD6990/HD5970? Or did you mean x2 HD6990/HD5970?

Just wondering, I was a bit confused, I had an HD5970 which was being used with a Corsait TX650 and it was completely fine (And current x2 HD6970's on a 750W completely fine too. tongue.gif).

Thanks for the thread, bookmarked, it will definitely help me in future upgrades.

I count dual gpu cards as a single card. A single HD6990 would be fine on a 550W. Two (quadfire) would need an 850W.

Burning books is like burning bras; after the adrenaline rush of the symbolic moment wears off all you're left with is a pile of ashes and unsupported boobs.
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