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Corsair AX1200 question - Page 2

post #11 of 16
yea it does ........for some reason i completely forgot....i think it's because i used 3 6 and 3 8
Edited by Vlasov_581 - 11/6/11 at 10:00pm
    
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post #12 of 16
I personal hate multi rail OCP. We it comes to large draw components, I prefer single rail. With multi-rail, you have to connect your devices correctly on the cables or it shuts down on load. Also, I didn't need any adapters with my rig and I use four 8pin PCIe connectors.
     
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post #13 of 16
Quote:
Originally Posted by ezveedub View Post
I personal hate multi rail OCP. We it comes to large draw components, I prefer single rail. With multi-rail, you have to connect your devices correctly on the cables or it shuts down on load. Also, I didn't need any adapters with my rig and I use four 8pin PCIe connectors.
No, you don't. Please go back one page then see the top sticky for info...

http://www.overclock.net/power-suppl...explained.html

Single rail is no more than pure nonsense that leaves you with no protection in case of a short.

The Real Power Pro has a 60A pool for GPU's, which equals to 720W. That's not even the OCP set-point. It triggers OCP beyond, around 800-900W. There's no way he'll pull that much on GPU's, so that makes things safer by dividing the load over virtual rails (read not physical).
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post #14 of 16
Quote:
Originally Posted by Johnny Doe View Post
No, you don't. Please go back one page then see the top sticky for info...

http://www.overclock.net/power-suppl...explained.html

Single rail is no more than pure nonsense that leaves you with no protection in case of a short.

The Real Power Pro has a 60A pool for GPU's, which equals to 720W. That's not even the OCP set-point. It triggers OCP beyond, around 800-900W. There's no way he'll pull that much on GPU's, so that makes things safer by dividing the load over virtual rails (read not physical).
I personally do not like multi-rail and unless you specifically pick out a proper sized quality unit, you can have issues if you do not connect the rails accordingly. As for draw, I'm not sure what GTX590s pull, but my setup's power draw was peaking about 1491 watts from the wall when Phaedrus2123 was asking for the 6990 data for his PSU calculator earlier this year.

http://www.overclock.net/amd-ati/106...l#post14289453
     
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post #15 of 16
Quote:
Originally Posted by ezveedub View Post
I personally do not like multi-rail and unless you specifically pick out a proper sized quality unit, you can have issues if you do not connect the rails accordingly. As for draw, I'm not sure what GTX590s pull, but my setup's power draw was peaking about 1491 watts from the wall when Phaedrus2123 was asking for the 6990 data for his PSU calculator earlier this year.

http://www.overclock.net/amd-ati/106...l#post14289453
No, you don't. Your meter is completely inaccurate because according to Guru3D, 6990 Quad peaks to 902W from the wall; running FurMark on an OC'ed Nehalem setup with CCFL's.

http://www.guru3d.com/article/his-ra...sfire-review/9

That's the whole setup, not GPU only. Convert AC to DC, 800W. Take out at least 100W for their extra's, the whole setup would pull about 700W in reality.

The reason you don't like multi-rail is thinking like "It's crap. Limits power! Going to shutdown!". It won't, because that, the engineers know far more than you do, so they aren't going to make it shutdown on you. Have you read what I wrote on the Real Power Pro?

Look, the RPP has two 20A rails for your CPU/mobo, that's OVER 480W. Do you have an idea how much power a CPU pulls? Even an OC'ed i7 won't pull above 150-200W in games. Further, it has a at least 900W GPU rail. A 6990 pulls 350W at stock, second one, 250W due to CrossFire scaling (lower GPU usage {50W} per card). So that makes up for 600W. There you have at least a 300W headroom. Even with an OC, you will NOT trigger OCP. Period.

Lastly, the RPP has one more 20A rail for Molex, which means OVER 240W for your HDD's, fans etc. Then again those won't pull anywhere near that much power. The RPP is a 6 railed unit with a wise configuration. That said, I've yet to read a "virtual" multi unit shutdown. OCP set-points are set up so high it's not possible to shut them down. That's it. I'm sick of this specific nonsense.
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post #16 of 16
You need to stop putting words in my mouth, I never said anything about crap power delivery. I said, depending on the PSU chosen, if it has multi-rail OCP, you have to make sure you load the rails properly, as I have seen it happen here on OCN and with my brother-in-laws PC with a 6990, as it clipped the power under load due to OCP kicking in. Also the post I made was not gaming, it was a continuous draw, more than what gaming does with ATI cards.
     
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