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[Official] EVGA 780 Ti Classified K|NGP|N Owner's Club - Page 403

post #4021 of 8158
Depends on how much it's clocked. I also shut the rig down with 2xKPE only on a single ax1200i. (water-cooling).
post #4022 of 8158
I have shut down a rig and saw cobz rig shutdown with 2 normal ti classy's at about 1.4v and 3930k about 1.4v with ax1200 and ax1200i. it's not exact numbers but it definitely was a power issue because once more power was added it stopped shutting down.

I can't even imagine how much my kingpin at 1.65v and 1850 core and 4930k at 1.6v was pulling.
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post #4023 of 8158
Cobz surely did not have both the ax1200 and ax1200i hooked up together, right? Can't imagine 2 Ti Classy's and a 3930k at 1.4V consuming more than 2400W!
post #4024 of 8158
Wouldn't be surprised, i couldn't bench single KPE and 4960x screwed up on a 1200i. Now run the system on 860 and 1200 per Ti.
post #4025 of 8158
Quote:
Originally Posted by strong island 1 View Post

I have shut down a rig and saw cobz rig shutdown with 2 normal ti classy's at about 1.4v and 3930k about 1.4v with ax1200 and ax1200i. it's not exact numbers but it definitely was a power issue because once more power was added it stopped shutting down.

I can't even imagine how much my kingpin at 1.65v and 1850 core and 4930k at 1.6v was pulling.

Oh man I thought I would have been safe with an EVGA 1300 G2 for the KPE + i7 3970x on LN2 but may need to hook up a second 1300...
What do you guys recommend to connect 2 PSU together?
post #4026 of 8158
Quote:
Originally Posted by geggeg View Post

Cobz surely did not have both the ax1200 and ax1200i hooked up together, right? Can't imagine 2 Ti Classy's and a 3930k at 1.4V consuming more than 2400W!


No what I meant was I saw his shut down using the ax1200i and 2 ti classy's and I have had mine shutdown with 2 regular ti classy's with a ax1200. I didn't mean that both were hooked up to same system sorry. Was just saying that for 2 overvolted ti classys or kpe's 1200w doesn't seem to be enough.

Quote:
Originally Posted by marc0053 View Post

Oh man I thought I would have been safe with an EVGA 1300 G2 for the KPE + i7 3970x on LN2 but may need to hook up a second 1300...
What do you guys recommend to connect 2 PSU together?

as long as it's just one kpe you should be fine. I didn't have any shutdowns with my kpe at 1.65v and 4930k at 1.6v using a ax1200. But I don't have any measurements or anything. This is all just what I have experienced.
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post #4027 of 8158
Quote:
Originally Posted by strong island 1 View Post

I have shut down a rig and saw cobz rig shutdown with 2 normal ti classy's at about 1.4v and 3930k about 1.4v with ax1200 and ax1200i. it's not exact numbers but it definitely was a power issue because once more power was added it stopped shutting down.

I can't even imagine how much my kingpin at 1.65v and 1850 core and 4930k at 1.6v was pulling.

it's not the voltage, it's the current. at -80C or -150C you're doing more than just controlling the thermals... reduced tunneling, so the current goes where it is supposed to. Measure it next time you LN2... might be surprised. biggrin.gif
Edited by Jpmboy - 4/26/14 at 5:15pm
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post #4028 of 8158
Quote:
Originally Posted by marc0053 View Post

Oh man I thought I would have been safe with an EVGA 1300 G2 for the KPE + i7 3970x on LN2 but may need to hook up a second 1300...
What do you guys recommend to connect 2 PSU together?

"add2psu" works really well. I used two to run 3 Psu without a hitch. One thing about 2 PSUs that can be a concern: If the second is not in chassis ground with the main, any ground potential difference is routed thru the rig. connect them with a wire via the mount screws. won't reduced teh current flow to zero, but will take most of it off the components. Ideally, use two identical PSUs that share a chassis ground.
http://www.add2psu.com/
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post #4029 of 8158
Quote:
Originally Posted by strong island 1 View Post

No what I meant was I saw his shut down using the ax1200i and 2 ti classy's and I have had mine shutdown with 2 regular ti classy's with a ax1200. I didn't mean that both were hooked up to same system sorry. Was just saying that for 2 overvolted ti classys or kpe's 1200w doesn't seem to be enough.
as long as it's just one kpe you should be fine. I didn't have any shutdowns with my kpe at 1.65v and 4930k at 1.6v using a ax1200. But I don't have any measurements or anything. This is all just what I have experienced.

Thanks for the clarification

Quote:
Originally Posted by Jpmboy View Post

"add2psu" works really well. I used two to run 3 Psu without a hitch. One thing about 2 PSUs that can be a concern: If the second is not in chassis ground with the main, any ground potential difference is routed thru the rig. connect them with a wire via the mount screws. won't reduced teh current flow to zero, but will take most of it off the components. Ideally, use two identical PSUs that share a chassis ground.
http://www.add2psu.com/

Thanks smile.gif
post #4030 of 8158
Oh well, I hope the 1300G2 will be enough for everyday use. I doubt they will release any higher power one before it goes in stock again (in EU).
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