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Antec HCP-1300 Connection/Multi-Rail Nightmare! -PLEASE HELP!- - Page 2

post #11 of 31
I don't quite know where to begin.

You're running 4.8 GHz on a 3970X. That's an extreme overclock in my book, and I hope you're watching voltages carefully. If it's over 1.40v, you might have damaged the CPU already and that could explain why the system is crashing under load. Might not be power related at all, though I think with 4 Titan SC, a overly power hungry motherboard, and a 4.8 GHz overclock, you've probably been running in an overloaded condition for a period of time and the PSU may have degraded.

Greg
post #12 of 31
Thread Starter 
Quote:
Originally Posted by shilka View Post

4 video cards and CPU/motherboard on a PSU with 4 rails

Reason why its shutting off is you are overloading one of the rails

Either downclock or get a PSU with more or stronger rails

What PSU that is OUT now do you suggest (and in stock)?
     
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post #13 of 31
Thread Starter 
Quote:
Originally Posted by hammong View Post

I don't quite know where to begin.

You're running 4.8 GHz on a 3970X. That's an extreme overclock in my book, and I hope you're watching voltages carefully. If it's over 1.40v, you might have damaged the CPU already and that could explain why the system is crashing under load. Might not be power related at all, though I think with 4 Titan SC, a overly power hungry motherboard, and a 4.8 GHz overclock, you've probably been running in an overloaded condition for a period of time and the PSU may have degraded.

Greg

I'm not sure if you read the OP. I got a BRAND NEW power supply - the Antec HCP-1300 and just installed it yesterday.

I was running an Antec HCP-1200 with 4x Titan SCs over-volted (1.212V) and OC'd along with the CPU @ 4.8GHz with all the same peripherals for almost a year (that same PSU also ran 4x GTX-680 Classified also over-volted (w/ EVBot) and OC'd heavily w/ a heavy CPU OC). The HCP-1200 was an absolute monster. Really regret selling it.

The CPU is @ 4.8Ghz @ 1.344V which is a great voltage for that kind of speed.

This PSU (HCP-1300) is brand new and I just installed everything and connected it - either the PSU is a dud or the rails are hitting the limit.

However, the GPUs are NOT OC'd now - I'm testing things at stock clocks and it's still crashing. So what gives?

I wonder if this is why there are so few reviews of the Antec HCP-1300. The two 16-pin PCI-E connectors are terrible - they should have been 8-pin. No idea why they have to span two rails to power one card.
     
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post #14 of 31
When you ran the 4 Titans with the HCP-1200 were you using the same board and cpu or was it something else?
post #15 of 31
Thread Starter 
Quote:
Originally Posted by PsyM4n View Post

When you ran the 4 Titans with the HCP-1200 were you using the same board and cpu or was it something else?

Same board and CPU - same OC as well.
     
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post #16 of 31
Maybe you forgot to plug the additional molex/EPS power connectors to the board or you've got yourself a lemon. It happens sometimes.

It's a fact however that the hcp 1300 is underpowered for your current system. Also note that the GTX 680 draws like 60 watts less than the Titan so the load would be like 250 watts less with 4 of the older cards. Since you have problems with just 3 Titans then the above scenario is probably what happens though.
post #17 of 31
Thread Starter 
Quote:
Originally Posted by PsyM4n View Post

Maybe you forgot to plug the additional molex/EPS power connectors to the board or you've got yourself a lemon. It happens sometimes.

It's a fact however that the hcp 1300 is underpowered for your current system. Also note that the GTX 680 draws like 60 watts less than the Titan so the load would be like 250 watts less with 4 of the older cards. Since you have problems with just 3 Titans then the above scenario is probably what happens though.

No I have both molex connections on the board plugged in.

I had 4 680 Classifieds - each with 2 8-pin connectors. They draw more power than the titans. Sigh...
     
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post #18 of 31
Quote:
Originally Posted by Baasha View Post

I had 4 680 Classifieds - each with 2 8-pin connectors. They draw more power than the titans. Sigh...

When at stock? No. Not even close. Even when doing some major overclock it's debatable if they end up drawing as much as the titans.
post #19 of 31
Thread Starter 
Quote:
Originally Posted by PsyM4n View Post

When at stock? No. Not even close. Even when doing some major overclock it's debatable if they end up drawing as much as the titans.

I don't know why it's so hard for you to comprehend the fact that I had the EXACT SAME SETUP with 4x Titans OC'd @ 1.212V, CPU OC'd to 4.8Ghz, same mobo and all the peripherals, on an Antec HCP-1200 and it ran all day without issue.

This is supposed to be a more powerful unit than the 1200 and hence the issue is most likely overloading the rails (unless it's a dud).

Please stop posting about "not enough power" - that is NOT the issue here! rolleyes.gif
     
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post #20 of 31
Thread Starter 
Well, the crashing occurs with 3-Way SLI as well.

Going to try another PSU to see if that's the culprit.
     
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